Abstract: A method for constructing a rotor of an air preheater having a plurality of diaphragm plates dividing the rotor into a number of wedge-shaped compartments. Each compartment includes compartment components such as a rotor shell plate, a hot end rotor angle, a cold end rotor angle, and one or more stay plates and means for locating at least a portion of each of the components within the compartment. The diaphragm plates are manufactured by marking at least one index location associated with each compartment component on each diaphragm plate blank utilizing a template identifying the index locations and forming an opening at each index location. Each compartment is assembled by positioning a first diaphragm plate adjacent to a second diaphragm plate and locating each compartment component between the adjacent diaphragm plates by engaging the locating means of the component in an associated opening in one of the diaphragm plates.

Abstract: A conical honeycomb body and method for producing the honeycomb body that avoids the deformations occurring when fixing a conical lamellar body in a conical casing tube is described. Clamping aids are disposed in the casing tube at a distance from its openings and are configured such that at least in sections they have a ring shape. The clamping aids allow for the economical production of conical honeycomb bodies having greater mechanical strength. Their variants make it possible to influence the function of the edge area of the conical honeycomb body in a targeted manner. Especially beading, necking and/or rings achieve, for example, a barrier effect so that no fluids are able to circulate in the channels situated in the edge area of the casing tube. The openings of the casing tube are free of inserted elements and can therefore be easily welded to other components of the exhaust-gas system.

Abstract: A process for producing a catalyst by providing a monolith with a polygonal cross section, tightly enclosing the monolith with a single part jacket made of metal sheet or plate, placing a layer of expanded matting between the jacket and the monolith, bending the jacket with at least one of a bending and a clamping device into a proper final shape so that edges of the jacket which extend at least essentially in a longitudinal direction of the monolith at least contact each other, and undetachably joining the edges to each other.

Abstract: Individual plate members (W1, W2, W3, W4, W5) that are different in plate thickness or material are joined together by mush seam welding to form hollow material (W, W′), and the rigidity is controlled in individual parts. By spinning the rigidity material (W, W′), a junction (1b) and a cone (1c) are formed in an optimum shape, and a hollow member (1) is manufactured. Thus, the hollow member (1) smooth in juntion and high in welding strength is obtained in spite of thin plate material. When this hollow member (1) is used in a catalyst container, the sealing performance is excellent without being accompanied by an increase in radiant noise or an increase in weight.

Abstract: An exhaust emission control device is manufactured by sizing a housing of over a substrate and intumescent mat subsequently to heating said emission control device. The step of heating causes said intumescent mat to at least reach a temperature at which it swells. If the substrate has a washcoat layer, it may be left unfired until after it is assembled with the housing, in which case the step of heating causes the washcoat layer to sinter.

Abstract: A method for manufacturing a catalytic converter having a ceramic substrate comprises sizing a housing of a catalytic converter over a substrate and intumescent mat subsequently to heating the converter, the heating causing the intumescent mat to at least reach a temperature at which the intumescent mat swells.

Abstract: A method of fabricating a catalyst converter includes the steps of: obtaining a tubular member by rolling up a metallic plate member of a rectangular shape having ear portions at four corners thereof such that opposing ones of the ear portions abut against each other, and by effecting butt welding for both ends of the plate member; cutting off projecting portions formed by the ear portions at both ends of a weld of the tubular member; incorporating a catalyst carrier into the tubular member with the projecting portions cut off; effecting drawing for both end portions of the tubular member with the catalyst carrier incorporated therein; and attaching a pair of flanges, respectively, to the both end portions of the tubular member subjected to drawing.

Abstract: A catalytic combustor is formed from a stack of flat and corrugated metal strips. The stack may or may not be wound into a spiral or formed into some other curved structure. Some of the strips are displaced, or offset, relative to other strips, such that some strips do not extend as far as the end faces of the stack. The latter feature increases the effective height of the corrugations, at the end faces, and makes it feasible to weld the strips together. In one embodiment, there are high-amplitude corrugated strips and low-amplitude corrugated strips. The low-amplitude corrugated strips increase the effective cell density, but are displaced from the end faces of the stack so as to permit convenient welding. The resulting combustors therefore have very high cell density, yet can be manufactured economically.

Abstract: A catalytic converter is constructed by measuring a substrate to be placed within the outer shell or can, wrapping the substrate in a selected mat and loading the package (mat and substrate) into the can. The can is larger than it will be at completion of manufacture to render such loading easier. Subsequent to loading, the measurement of the substrate is used to direct the degree to which the can is reduced in outside dimension such that a selected annulus is created between the substrate and can, said annulus being occupied by said mat.

Abstract: The present invention is directed to a method of producing a catalytic converter which comprises the steps of providing a shock absorbent member around an outer periphery of a catalyst substrate, inserting the catalyst substrate and the shock absorbent member into a cylindrical workpiece, fixing the cylindrical workpiece to prevent the cylindrical workpiece from being rotated about a longitudinal axis thereof, reducing a diameter of a body portion of the cylindrical workpiece covering at least a portion of the shock absorbent member to hold the catalyst substrate in the cylindrical workpiece, spinning at least an end portion of the cylindrical workpiece, by means of a plurality of spinning rollers, which are evenly positioned around the outer periphery of the end portion, and which are revolved about the axis of the end portion along a common circular locus, and moved in a radial direction of the end portion, and moving the plurality of spinning rollers in an axial direction of the end portion to reduce a dia

Abstract: The instant invention provides a new high temperature catalytic monolith support system which can be effectively utilized for sealing between the catalytic monolith and the housing of a catalytic converter, as well as physically cushioning the catalytic monolith within the housing. The support system preferably is made form wire mesh and a non-intumescent thermoresistant paper, in which the wire mesh and thermoresistant paper are integral and crimped together to produce a multi-herringbone configuration, providing multiple perpendicular barriers that prevent the gas-flow from bypassing the monolith.

Abstract: One embodiment for making an exhaust emissions control device comprises: disposing a mat support material around at least a portion of a substrate, disposing a shell on a side of the mat support material opposite the substrate, and adhesively bonding the mat support material to at least one of the substrate and the shell with a material comprising an inorganic binder.

Abstract: A hemming machine has a single bending block having a surface for carrying out a preliminary bending process and another surface for carrying out a final bending process, a lower block for placing an outer panel with a flange and a mechanism for moving the bending block. The mechanism moves the upper deck in an arcuate way around a specified axis such that a force with a relatively large horizontal component is applied to the flange of the outer panel when the preliminary bending surface of the bending block bends the flange in the preliminary bending process, and then in another arcuate way around another axis such that a force with a relative large perpendicular component is applied to the flange of the outer panel when the final bending surface of the bending block bends the flange in the final bending process.

Abstract: In an electrically heated catalytic converter including a heater consisting of a structure having an open porosity so as to permit fluid to flow therethrough, a heterogeneous catalyst is disposed within the heater structure. The heater structure, which includes the catalyst, is capable of accommodating sufficient electrical energy to provide the activation energy required for a particular catalytic reaction to be performed by the catalytic converter.

Abstract: A honeycomb structure body which has a number of passages partitioned with partition walls and penetrating along the axial direction. A porous honeycomb structure body which contains refractory grains as filler, one or more elements selected from the group consisting of the rare earth elements, alkaline earth elements, Al, and Si, and the crystal containing one or more kinds of these elements. The present honeycomb structure body contains refractory grains such as silicon carbide grains and the like, but it can be produced at a relatively low firing temperature at a low price, it is sufficiently porous and high in specific surface area, and it can be used as a filter for purifying automobile exhaust gas, a catalyst carrier, and the like under the high SV conditions.

Abstract: Disclosed herein is an apparatus and method for manufacturing an exhaust emission control device, and the exhaust emission control device formed thereby. The method of manufacturing an exhaust emission control device, comprises: disposing a viscous-elastic material around at least a portion of a substrate to form a wrapped element. The wrapped element is compressed at a first compression rate and at a second compression rate that is slower than the first compression rate, and the wrapped element is introduced into a housing.

Abstract: An apparatus for producing a honeycomb body from a stack having a plurality of at least partially structured sheet metal layers forming a plurality of channels through which a fluid can pass, including a mould having an internal shape substantially corresponding to an external shape of a honeycomb body to be produced, a wrapping device for holding a stack at least partially structured sheet metal layers at a central region thereof, the wrapping device being pivotally disposed about an axis for wrapping the stack, and a holding device having positioning elements at least partially insertable into channels formed in the central region of the stack for maintaining a structural configuration in the central region of the stack during a wrapping of the stack.

Abstract: The invention provides a preform insulating end cone suitable for forming the end cone of a pollution control device. The preform insulating end cone includes a cone shaped intumescent or non-intumescent sheet material. The sheet material has a plurality of slits enabling the sheet material to be cone shaped. A shape retaining element is in intimate contact with the intumescent sheet material. The shape retaining element enables the intumescent sheet material to maintain a cone shape. The invention also provides methods of making preform insulating end cones of the invention.

Abstract: A method of assembling a catalytic converter comprising a ceramic catalyst substrate supported by a compressed resilient mat within a metal shell comprising the steps of: (1) providing a slave enclosure exhibiting a predetermined shape that substantially matches the shape of the ceramic substrate; (2) providing a layer of resilient supporting mat material on the inner surface of the enclosure; (3) mechanically pre-compressing the encircling mat layer against the inner surface of the slave enclosure; (4) inserting the substrate into the slave enclosure while retaining the encircling mat layer against the inner surface and without further compressing the mat layer; and (5) transferring the substrate and mat layer into the metal shell.

Abstract: An exhaust treatment device comprises: a substrate; an end-cone with a first end disposed about an end of the substrate and a second end comprising a snorkel; a mat support disposed over at least a portion of the end-cone, wherein the mat support comprises a slit in operable communication with a snorkel slot and a keyhole disposed at the opposite end of the slit as the snorkel slot, and wherein at least a portion of the snorkel protrudes through the snorkel slot; and a shell disposed around the mat support.

Abstract: An end cone for an exhaust emission control device is provided. The end cone comprises an outer shell and an end cone insulator. The outer shell has an inner surface. The end cone insulator comprises insulation and binder defining a passage therethrough. The end cone insulator has a first surface being disposed adjacent to the inner surface, and a second surface, at least a portion of which is exposed to the passage.

Abstract: In an exhaust gas purifying catalyst, an acid material with a high affinity with respect to an absorbing agent is dispersed and mixed in a catalyst layer, to which the absorbing agent is added, or a layer of the acid material is formed inside the catalyst layer in order to prevent the absorbing agent from moving from the catalyst layer into the carrier. This reduces the permeation of the absorbing agent added to the catalyst layer into a carrier, the evaporation and splash of the absorbing agent from the catalyst, and the deterioration in the durability and the exhaust gas purifying performance of the catalyst.

Abstract: A honeycomb structure which is a plurality of honeycomb segments (21) bonded into one piece by a bonding material (25), the honeycomb segments (21) each having a large number of through-channels (11) separated from each other by partition walls (20), the bonding material (25) being composed of components substantially same as components composing the unified boy of honeycomb segments (21), and the honeycomb segments (21) being bonded to each other at their planes substantially parallel to the direction of channels of through-channels (11), in which honeycomb structure each bonded plane (22) of each honeycomb segment (21) has a structure possessing an unbonded area (12) containing at least an edge portion opening to a periphery of its gas inlet side end face (15) and/or a periphery of its gas outlet side end face (17). With this honeycomb structure, there is no cracking caused by the thermal stress during the use, and excellent durability can be obtained.

Abstract: The present disclosure relates to a stuffing cone apparatus, method for making a gas treatment device, and the device made therefrom. In one embodiment, the stuffing cone apparatus comprises: a funnel having a first end and a second end, with the second end having a smaller diameter than the first end, a pusher detail comprising a pusher disc perpendicularly disposed on an end of a pusher arm, wherein the pusher detail is slideable within the funnel, and a retainer detail comprising a retainer disc perpendicularly disposed to an end of a retainer arm, wherein the retainer detail is slideable within the funnel. The retainer disc and the pusher disc are capable of physically contacting opposite sides of a substrate within the funnel.

Abstract: An apparatus and a process produce a honeycomb body from at least one stack having a multiplicity of at least partially structured sheets which form a multiplicity of passages through which a fluid can flow. The apparatus includes a fork-shaped winding device which is rotatable about an axis and which engages each stack, as well as former segments which close to constitute a former. The former is formed from at least two former segments. Each former segment is pivotable in opposite relationship to the direction of rotation of the winding device about a respective pivot axis which respectively extends parallel to the axis of the winding device.

Abstract: A method of manufacturing a catalytic converter is described where the catalytic converter is comprised of an outer tube member having a monolith substrate internally compressed therein with a wrapped mat material surrounding the monolith substrate and intermediate the outer tube. One or more monolith members can be applied within the outer tube and heat shields may also be applied internal to the outer tube and adjacent to the monolith substrate. The assembly of the catalytic converter includes measuring the sequence of compression of the mat material to the monolith substrate in order to understand the possible force characteristics which can be applied during the assembly thereof. The mat material is therefore compressed within the outer tube by way of compression jaws, by compression rollers, and/or by spinning. The compression of the mat material can be in single or multiple steps.

Abstract: There is provided an assembling method for an assembly in which a cell structure is housed and held in a metal vessel via a compressible material by arranging the compressible material having a cushioning property between the outer periphery of the cell structure and the tubular metal vessel in a compressed state and applying a mounting pressure to the cell structure via the compressible material to hold the cell structure in the metal vessel. Information regarding the thickness and/or bulk density of the compressible material has been marked on the member surface prior to the start of an assembling process, the information is read in the assembling process, and a cell structure, a metal vessel, and a compressible material having a proper holding condition are selected based on the read information. Even if the external-shape dimension of the cell structure etc. constituting the assembly varies, the influence of variation can be made little, and a proper holding state without a fracture etc.

Abstract: A method of producing an encased honeycombed body, in particular a supporting body of a catalytic converter, includes the steps of producing a honeycombed body by stacking and/or winding sheet metal layers, of which at least some are structured sheet metal layers, so that the honeycomb body has channels through which a fluid can flow. A sleeve is introduced into a tubular jacket. The sleeve is smaller in the axial direction than the axial length of the honeycomb body and the tubular jacket. The sleeve has an outer circumferential surface which substantially bears against a part of the inner wall of the tubular jacket. The honeycomb body is introduced into the tubular jacket and into the sleeve and is connected to the tubular jacket and the sleeve. If required, the tubular jacket may also be connected to the sleeve.

Abstract: A method of assembling a catalytic converter comprising the steps of: (1) providing a metal shell exhibiting a predetermined shape that substantially matches the shape of the ceramic substrate; (2) inserting into the metal shell a sufficient amount of a resilient supporting mat material to form a encircling mat layer; (3) compressing the encircling mat layer to an initial gap bulk density, the initial gap bulk density being higher than the final gap bulk density; (4) releasing the compression-on the mat layer and prior to the mat layer reaching its final gap bulk density, inserting at least a portion of the substrate into the encircling mat layered metal shell and then allowing the mat layer to further release until the mat layer is compressed against the ceramic substrate at the final predetermined gap bulk density.

Abstract: A method of assembling a catalytic converter comprising the steps of: (1) providing a metal shell exhibiting a predetermined shape that substantially matches the shape of the ceramic substrate; (2) inserting into the metal shell a sufficient amount of a resilient supporting mat material to form a encircling mat layer; (3) compressing the encircling mat layer to an initial gap bulk density, the initial gap bulk density being higher than the final gap bulk density; (4) releasing the compression on the mat layer and prior to the mat layer reaching its final gap bulk density, inserting at least a portion of the substrate into the encircling mat layered metal shell and then allowing the mat layer to further release until the mat layer is compressed against the ceramic substrate at the final predetermined gap bulk density.

Abstract: One embodiment of a gas treatment device comprises: a substrate; a housing disposed concentrically about the substrate, the housing comprising a first portion having a decreasing internal diameter from a first end to a main body portion, the main body portion extending from the first portion; and a mat support material disposed concentrically about the substrate to form a subassembly, wherein the subassembly is at least partially disposed in the main body portion.

Abstract: A process for producing a compact catalytic reactor, in which reaction spaces or heat-transfer spaces are formed by stacking at least partially structured plates alternately one on top of the other, a catalyst is introduced into the reaction spaces, and the plates are provided with a layer of solder at least in the edge region, but not in the region provided with catalyst material, and, after stacking them one on top of the other, are soldered to form a reactor. In addition, the plates may be provided with a bent-up edge region a for easy positioning and for increasing the leak tightness. Finally, an unstructured intermediate plate may also be respectively provided between the structured plates.

Abstract: A method for producing a metallic honeycomb configuration is described. The method includes forming a honeycomb body by stacking and/or winding layers of steel sheet containing chromium and aluminum resulting in the honeycomb body having channels through which a fluid can flow. The honeycomb body is introduced into a tubular jacket. Connections are formed between neighboring layers of steel sheet by thermal treatment. The honeycomb body is then cooled down. It is preferred for the layers of steel sheet to be provided with a rolling oil having a high carbon content before the forming of the honeycomb body, with the effect that a layer of carbon enhancing the sintering process is formed in the thermal treatment. The number of connections produced in individual regions can be further influenced by selective introduction of stresses or by stress relief.

Abstract: A process for producing a honeycomb body, in particular for an exhaust gas catalytic converter, includes cold-shaping at least one hard metal sheet for at least partially providing the hard metal sheet with a structure. No soft annealing of the hard metal sheet is effected prior to the cold-shaping. The at least partially structured hard metal sheet is layered and wound or it is merely wound. A semi-manufactured honeycomb body is also provided.

Abstract: A method of fabricating a catalyst converter includes the steps of: obtaining a tubular member by rolling up a metallic plate member of a rectangular shape having ear portions at four corners thereof such that opposing ones of the ear portions abut against each other, and by effecting butt welding for both ends of the plate member; cutting off projecting portions formed by the ear portions at both ends of a weld of the tubular member; incorporating a catalyst carrier into the tubular member with the projecting portions cut off; effecting drawing for both end portions of the tubular member with the catalyst carrier incorporated therein; and attaching a pair of flanges, respectively, to the both end portions of the tubular member subjected to drawing.

Abstract: A vessel (50) having a cylindrical wall (52) and an end wall (54). The cylindrical wall (52) includes an edge portion (58), a radially inward shoulder portion (60), and a capture portion (62) therebetween. The end wall (54) is interference-fit in the capture portion (62) with the shoulder portion (60) forming a positive stop therefore and the edge portion (58) being turned radially inward thereover. An inlet/outlet fitting (70) extends through an appropriately-sized opening in the end wall (54) and is secured thereto by, for example, a lip (72) and a weld (74). The vessel (50) can be incorporated into the construction of refrigeration components wherein compressor-generated vibration causes stress concentration concerns for inlet/outlet interfaces on the end wall (54).

Abstract: A sheathed conductor configuration for corrosive environmental conditions is disclosed. The sheathed conductor configuration has at least one internal electrical conductor that is electrically insulated from a metallic outer sheath by an electrically insulating material. The outer sheath is formed of steel that has subsequently been enriched with aluminum by diffusion.

Abstract: To manufacture a honeycomb body, it is proposed that at least one stack is layered up from a plurality of at least partly structured sheet metal layers. Each stack is folded over about a bending line such that a sheet metal pack is formed having a curved first end area and a second end area. The second end area has a first end section and a second end section. A first end face of the first end section forms a first angle with a central plane, and a second end face of the second end section forms a second angle with the central plane, wherein the first angle is smaller than the second angle. The sheet metal packs are held by looping devices disposed in a mold, and the sheet metal pack is looped into a honeycomb body by rotation of the looping devices.

Abstract: A method of assembling a catalytic converter comprising a ceramic catalyst substrate supported by a compressed resilient mat within a metal shell comprising the steps of: (1) providing a slave enclosure exhibiting a predetermined shape that substantially matches the shape of the ceramic substrate; (2) providing a layer of resilient supporting mat material on the inner surface of the enclosure; (3) mechanically pre-compressing the encircling mat layer against the inner surface of the slave enclosure; (4) inserting the substrate into the slave enclosure while retaining the encircling mat layer against the inner surface and without further compressing the mat layer; and (5) transferring the substrate and mat layer into the metal shell.

Abstract: Plural hydrocarbon HC adsorbing units (A1-A3) and plural three-way catalysts (B1-B3) are accommodated in a shell (2). The HC adsorbing units (A1-A3) and three-way catalysts (B1-B3) are disposed alternately in series, and one of the HC adsorbing units (A1-A3) is disposed in the position nearest to an inlet (14) of the shell (2). The HC contained in exhaust gas when the engine is started cold is first adsorbed by the HC adsorbing units (A1-A3), and the HC desorbed from the HC adsorbing units (A1-A3) with temperature rise is oxidized by the adjacent three-way catalysts (B1-B3) situated downstream. The heat capacities of the HC adsorbing units (A1-A3) and the three-way catalysts (B1-B3) are set so that the timing at which HC starts to be desorbed from the HC adsorbing units (A1-A3) is later than the timing at which HC starts to be oxidized by the three-way catalysts (B1-B3) situated downstream. In this way, HC which are discharged from the engine during a cold start are efficiently purified.

Abstract: In one embodiment, a method for manufacturing a device comprises disposing a first end around a second end, disposing an induction coil around the first end, discharging a current through the induction coil, forming eddy currents on the surface of the first end, and magnetic impulse sizing the first end and the second end together. The first end disposed around the second end comprises a tube end disposed around an end of the device or the first end disposed around the second end comprises the device end disposed around the tube end.

Abstract: A method and an apparatus produce a connection of at least at one end surface of a carrier matrix of a honeycomb body, in particular a catalyst carrier body, by a joining technique. The matrix is disposed in a tubular jacket and is laminated and/or wound from at least partially structured sheet metal foils or layers. The end surface of the honeycomb body is at least partially heated up with the aid of a surface inductor having induction coils. The induction coils are disposed in such a way that interconnections of the sheet metal foils or layers are established at least at locations, in particular at spots. Such connecting spots are preferably established variably with regard to their extent over the end surface. The surface inductor is variable with regard to the production of connecting locations and/or connecting spots, that is with regard to effective regions.

Abstract: A method for manufacturing a catalytic converter comprising disposing a first end around a second end and disposing an induction coil around the first end. Discharging a current through the induction coil and forming eddy currents on the surface of the first end. This magnetic impulse welds the first end and the second end together such that the first end disposed around the second end comprises a tube end disposed around an end of a catalytic converter or such that the first end disposed around the second end comprises the catalytic converter end disposed around the tube end. The method can be used to weld pieces of the catalytic converter, as well as sizing the catalytic converter for a desired mat density.

Abstract: A cylindrical body of a catalyst container has that overlapped portion of a rolled sheet of metal which is welded in an axial direction of the cylindrical body. A coned portion is welded, at a large diameter portion thereof, to each axial end of the cylindrical body. The large diameter portion of the coned portion has a flange which extends radially outward, and the axial end of the cylindrical body is brought into abutment with an outward end surface of the flange and is fillet-welded along an outer corner which is formed by the flange and the cylindrical body. A heat shield cover is mounted under the casing by connecting a second flange connected to a front end of a downstream exhaust gas pipe to a first flange connected to a rear end of the casing. The heat shield cover is made up of a mounting flange portion and a cover portion. The mounting flange portion is extended so as to abut with an upstream surface of a lower part of the first flange.

Abstract: The present invention is generally directed towards a catalytic converter installed in the motor vehicles. More specifically to a method and apparatus of measuring the pressure on the substrate as the catalytic converter is subject to the spin forming process. A pressure-measuring device such as a sensor is contact with the substrate. In order to transfer data from the rotating catalytic converter to a stationary object, a slip ring device is connected to the pressure-measuring sensor.

Abstract: A method for manufacturing a catalytic converter comprising disposing a first end around a second end and disposing an induction coil around the first end. Discharging a current through the induction coil and forming eddy currents on the surface of the first end. This magnetic impulse welds the first end and the second end together such that the first end disposed around the second end comprises a tube end disposed around an end of a catalytic converter or such that the first end disposed around the second end comprises the catalytic converter end disposed around the tube end. The method can be used to weld pieces of the catalytic converter, as well as sizing the catalytic converter for a desired mat density.

Abstract: A catalyst container of a catalytic converter is of a double-pipe structure wherein an outer periphery of an inner pipe and an inner periphery of an outer pipe are fittingly superposed on each other. The catalyst container has a catalyst installing portion, tapered cone portions extending from the catalyst installing portion with a gradually decreasing diameter, and straight connecting portions extending from smallest-diameter regions of the cone portions to the ends to be connected with connecting pipes upstream and downstream of the catalytic converter. Holes maybe formed in the cone portions of one of the inner or outer pipes to permit fluids to be displaced from the space therebetween. Such a catalyst container has sufficient rigidity and radiated noise suppression properties and thus can be reduced in weight by being thinned.

Abstract: The present invention is directed to a method of producing a catalytic converter which comprises the steps of providing a shock absorbent member around an outer periphery of a catalyst substrate, inserting the catalyst substrate and the shock absorbent member into a cylindrical workpiece, fixing the cylindrical workpiece to prevent the cylindrical workpiece from being rotated about a longitudinal axis thereof, reducing a diameter of a body portion of the cylindrical workpiece covering at least a portion of the shock absorbent member to hold the catalyst substrate in the cylindrical workpiece, spinning at least an end portion of the cylindrical workpiece, by means of a plurality of spinning rollers, which are evenly positioned around the outer periphery of the end portion, and which are revolved about the axis of the end portion along a common circular locus, and moved in a radial direction of the end portion, and moving the plurality of spinning rollers in an axial direction of the end portion to reduce a dia

Abstract: A hexagonal-cell honeycomb structure having a plurality of cell passages, wherein the sectional shape of each cell is hexagonal and the ratio (C/B) of the average C-axis compression fracture strength (C) and the average B-axis compression fracture strength (B) both of the honeycomb structure is 0.9 or more; and a method for fixing said structure. This hexagonal-cell honeycomb structure is high in mechanical strength, good in purifiability of automobile exhaust gas, and low in pressure loss and therefore can be suitably used particularly as a carrier for catalyst for purification of automobile exhaust gas.

Abstract: A substrate of multilayered structure having a plurality of sets of an insulation layer and a wiring line layer, and having one face for mounting a semiconductor element thereon and the other face on which external connection terminals are to be provided, the face for mounting a semiconductor element being provided with pads to be bonded to an electrode terminal of the semiconductor element, the other face being provided with pads to be bonded to an external connection terminal, such as a terminal formed of a solder ball, and the wiring line layers on both sides of an insulation layer being connected with each other by vias piercing the insulation layer, wherein the surfaces of the pads to be bonded to an electrode terminal of a semiconductor element are flat and are in the same plane. A method of manufacturing such a multilayered substrate is also disclosed.