Abstract: A method of welding in a groove (1) machined in a solid alloyed steel part, characterized in that bottom passes (2) are performed and then each wall (11, 13) of the groove (1) is faced with low alloy steel filler material, heat treatment is performed so as to eliminate the stresses in the zones (18, 19) of the part adjacent to the walls (11, 13) of the groove, and the empty space (20) between the two facing layers (15, 17) is filled with low alloy steel filler materials, said operation of facing the wall (11, 13) being performed by placing a carbon steel plate (4, 4', 2, 22') in the groove (1) at a certain distance from said wall (13, 11), by filling the space (12, 16) between the plate (4, 4', 22, 22') and the wall (11, 13) with layers (14, 14') of low alloy steel having a carbon content lying in the range 0.08% and 0.12%, and by getting rid of the steel plate (4, 4', 22, 22') and optionally a portion of the fill so as to leave only a layer (15, 17) on the wall (13, 11).

Abstract: The invention provides a method of manufacturing a composite body. A bonding portion is formed in a sintered ceramic body. A metal body obtained from a powder containing a metal powder as a main component is combined with the ceramic body. The assembly is sintered and the ceramic body and the metal body are physically bonded at the bonding portion.

Abstract: A matrix for a catalytic reactor for the purification of exhaust gas as well as a process and an arrangement for producing this matrix which has a corrugated metal strip, wound or folded, or a smooth strip and a corrugated metal strip that are wound or folded into several adjacent layers. The wound or folded layers are soldered together with one another. Radially extending indentations of small dimensions are provided at the points of the corrugated strip that border on the adjacent layers. In these indentations soldering material is received.

Abstract: The invention broadly comprises forming a weld preparation groove in the surface of a cylindrical roller, said groove being parallel to the longtitudinal axis of the roller. The groove is filled with a weld material. Subsequently, the outer surface of the cylinder is welded with a compatible welding material to coat the cylinder surface. The weld materials both for the groove and the surface are compatible such that when the surface is welded, the weld material in the groove is recast to form a homogeneous grain structure with the surface weld. The slot is then formed and the surfaces of the facing walls of the slot, the slot edges and the roller surface are uniformly coated.

Abstract: A joint construction is provided for lined equipment in which mutually weldable backing plates or sheets are lined with layer or facing sheets weldable to each other but not to the backing. An intermediate metal is optionally included between the backing and layer. A channel is provided between the layer sheets overlying the joint between the backings. A bridging strip weldable to the layer sheets is disposed in the channel and welded to the respective edges of the layer sheets. In some embodiments spaced strips of the layer material are disposed under the respective edges and the bridging strip and welds are made to join the spaced strips, the bridging strip and the edges of the layer sheets.

Abstract: A compressor comprises a casing having an aperture, a compressor unit provided in the casing, and an electric motor for driving the compressor unit, the electric motor being provided in the casing together with the compressor unit. An iron joint is mounted to the aperture of the casing and is formed with an electrically conductive metal coating having a corrosion resistance greater than that of iron on the surface thereof. The iron joint is comprised of a cylindrical portion and a conical outer surface portion welded to the edge of the aperture by resistance welding. A pipe for sucking or discharging gas to or from the casing is brazed into the cylindrical portion of the iron joint with a copper brazing material.

Abstract: A control wheel intended for welding onto the high-pressure rotor of a steam turbine is manufactured from a ring of individual blades welded together. For this purpose, all of the individual blades are provided with shrouds and root platforms having welding grooves formed therein. After being welded together into a ring, closed on all sides, the control wheel is annealed, machined and finally heat-treated.

Abstract: A rotor-shaft assembly which includes a ceramic, solid hubbed turbine rotor having an integral stub shaft brazed within one end of a generally cylindrically shaped sleeve member. A metal shaft is either brazed or cold press fitted within the other end of the sleeve member in a torque transmitting relationship. The stub shaft is formed with an annular relief therearound in order to reduce the compressive forces acting on the stub shaft by the sleeve member.

Abstract: An overlay for a valve disk of a butterfly or similar valve is formed from a strip of corrosion-resistant material. The strip is preferably profiled to conform to the edge of the disk and has an overall length less than the circumference of the disk. Both ends of the overlay are welded to the disk in closely spaced relation with the gap therebetween being filled by the weld metal. The disk also has a flow passage between the strip and its peripheral edge with first and second inlet ports leading from one disk face to intersect the flow passage. The inlet ports are closely spaced and lie on opposite sides of the weld. Sealant material introduced into one of the two ports flows in around the disk to form a complete seal between the disk and the overlay.

Abstract: A method of producing a fluid-tight seal between a thin, flexible member and a member support including the steps of providing a pair of spaced apart braze material receiving recesses on an external surface of the member support having a combined depth to accommodate excess braze material during the brazing of the member to the support, positioning the member to extend across the recesses and the surface and brazing the member to the surface while maintaining the contact between the braze material and the member. An apparatus using this method to produce a fluid-tight seal for a thin, flexible member comprises a support surface, a pair of excess braze material receiving spaced apart recesses on the surface and having a combined depth for accommodating excess brazing material and a brazing material located between the member and the surface and covering the recesses and an adjacent portion of the support surface.

Abstract: A method of manufacturing a modified fast fade rear axle housing of rectangular cross-section having a shortened neck shape which is bent by hot forming preferably at temperatures of 1350.degree. F.-1650.degree. F. to maximize the torsional strength of the housing in the expanded annular section where the transition zone joins the center differential receiving portion and the beam arms of the axle. Two U sections are welded after being bent to provide parallel legs joined to a web by arcuate corner sections. The axially extending curvature of the corner sections and the web are respectively convexly defined by a first radius R.sub.1 measured from a true origin at the vertical axis of the differential receiving portion where it intersects the longitudinal axis of the axle and a second eccentric radius R.sub.2 measured from a displaced origin and concavely by blending radii R.sub.4 and R.sub.

Abstract: A rotor-shaft assembly which includes a ceramic, solid hubbed turbine rotor having an integral stub shaft brazed within one end of a generally cylindrically shaped sleeve member. A metal shaft is either brazed or cold press fitted within the other end of the sleeve member in a torque transmitting relationship. The stub shaft is formed with an annular relief therearound in order to reduce the compressive forces acting on the stub shaft by the sleeve member.

Abstract: A T-jointing weld beveling for welding a plate member to a rib-like member having a varying thickness in a T-shaped manner is improved in that a beveling width changes in accordance with the thickness of the rib-like member and the edges of the beveled portion are wave-shaped so as to form intermittent gap space portions between the rib-like member and said edges, whereby uniform penetration beads can be formed, the welding can be achieved with a small electric current over the entire length of the rib-like member, and control of a welding condition can be facilitated.

Abstract: A method of forming a hermetic seal between two silicon wafers includes forming opposing troughs in each of the two wafers. In each trough are formed an isolation layer, a diffusion barrier and a tub of polysilicon. A gold strip is put on one polysilicon tub and the two silicon wafers are brought together and heated in a thermal gradient oven. A silicon gold eutectic is formed which migrates to the diffusion barrier of the silicon wafer.

Abstract: A safety container, for example a strong box or safe, having rigid walls which provide safety against drilling and cutting with a torch. The wall has an external layer of heat-resistant chrome-nickel steel, and an internal wall of non-alloyed steel which are welded to a series of parallel closely-spaced ribs extending the length of the wall. The elongated pockets formed between the opposed metal layers and adjacent ribs are filled with bars of highly conductive aluminum having bodies of corundum embedded therein.

Abstract: A method of making a rotor of a fluid energy translating device wherein the rotor has an annular passage entirely within the rotor, a plurality of radially extending vane slots intersecting the passage and axial openings intersecting the annular passage. The method comprises forming an annular groove in the periphery of a solid body, closing the open side of the groove to provide the annular passage, forming radial vane slots in the body intersecting the annular passage, and forming axial openings in the body intersecting the annular passage.

Abstract: This invention relates to a novel method of manufacturing an integral manifold for a multi-cavity injection molding system. The manifold has a melt passage which follows a tortuous path and is formed by milling matching grooves without any sharp bends in opposite surfaces of two plates which are then secured together. The manifold is formed of tool steel and also has an electrical heating element which is cast into a channel in its upper surface. The two plates are brazed together and the heating element is cast in the channel in a common heating step under a partial vacuum in a vacuum furnace. A highly conductive copper alloy flows around the heating element and diffuses by capillary action between the opposed surfaces of the plates to form a metallurgical bond with them to improve heat transfer away from the heating element and avoid leakage from the melt passage.

Abstract: A roll for the support and transport of ingots is disclosed including a core with a helical duct along the periphery covered by a thin sleeve being secured to the groove or duct separating ridges by welding making sure that coolant cannot flow transverse to the duct and that the sleeve cannot slip off the core. A particular welding technique as employed has broader applications including joining plate or sheet stock.

Abstract: A digging bucket lip is provided with one or more shrouds, each shroud having a blunt forward portion and a rearward portion divided into two spaced-apart legs. There are apertures through the legs, preferably in alignment. Rings are slidably disposed in the apertures and are welded on their inner margins to the lip disposed between the legs.

Abstract: A building roof, having an optimum strength to weight ratio, and method of constructing the roof wherein a horizontally disposed roof deck assembly particularly adapted to provide diaphragm shear strength and shear stiffness is formed comprising: a sheet (12) of steel corrugated material, a sheet (14) of optional insulation material, and a sheet (16) of rigid substrate material mechanically fastened together by screws (18). The sheet (12) of corrugated material is welded to purlins (20) by elongated welds (40) formed to resist rotation of the corrugated sheet (12) in a horizontal plane. The screws (18) extend through the rigid substrate (16) and through rigids (11) on the upper side of the corrugated sheet (12) to form a truss-like structure extending generally parallel to the purlins (20). Weld washers 30 having elongated slots (35) are used to secure high tensile strength symmetrically corrugated steel (12) having a thickness in a range of 0.0144 inch to 0.

Abstract: In a hermetic type compressor including a casing, an electric motor provided in the casing for rotating a driving shaft, and a compressor unit including a cylinder forcibly inserted in the casing, there are provided a method and a device for securing the compressor unit to the casing, wherein reduced thickness portions are provided on the outer surface of the casing so that welding can be carried out from outside of the casing through the reduced thickness portions. In this manner, heat generated in the welded portions can be reduced substantially, and various disadvantages caused thereby can be eliminated.

Abstract: Apparatus for securing a set of beams on a stationary assembly for a dynamoelectric machine. The apparatus has means for locating one end frame with an opposite end of at least one beam being seated thereon with tabs on the opposite ends of the beams being received in apertures of the end frame in spaced apart relation therefrom, respectively. Means is provided for biasing another end frame against the other opposite ends of the beams with tabs thereon being received in other apertures in the other end frame in spaced apart relation therefrom, respectively. Means is for simultaneously welding at least a part of the tabs to a part of the one and another end frame, respectively.

Abstract: A method is provided for the fabrication of a steel propeller which is designed to have a final shape and size consistent with a conventional propeller design. The resultant formed propeller includes n individual blades, each having boss segments. When the boss segments of the individual blades are joined together they form a propeller having a center boss portion. A center aperture may thereupon be drilled or bored in the boss for mounting the propeller on the shaft of a marine engine. The propeller is formed, in accordance with the method of the present invention, by individually press-forging n steel blanks into individual blade portions which include boss segments. The press-forged blades are then ground with their lateral surfaces beveled to permit them to be welded together into a whole propeller. The center aperture is then formed and the propeller finally heat treated and finally ground.

Abstract: A method of welding a pair of aluminum driveshaft components together is disclosed. A first driveshaft component is formed with a hollow cylindrical end portion having an inside diameter and a flat radially-extending end surface. A second driveshaft component is formed with a cylindrical end portion extending axially from a flat radially-extending shoulder. The end portion of the second driveshaft component has an outside diameter which is approximately equal to the inside diameter of the cylindrical end portion of the first component. The cylindrical end portion of the first component is telescopically positioned about a portion of the cylindrical end portion of the second component such that a predetermined distance defining a longitudinally-extending annular gap therebetween is maintained between the end surface of the first component and the shoulder of the second component. A welding compound is supplied within the gap to weld the first and second driveshaft components together.

Abstract: A plasma arc spray overlay of cladding metals is used over joints between clad metal pieces to provide a continuous cladding metal surface. The technique permits applying an overlay of a high melting point cladding metal to a cladding metal surface without excessive heating of the backing metal.

Abstract: A method of securing a set of beams of a stationary assembly for a dynamoelectric machine to a pair of opposite end frames thereof. The beams have a pair of opposite ends with a pair of oppositely extending tabs thereon, and the end frames have a pair of sets of aperture extending therethrough with sidewalls of the apertures being sized predeterminately greater than the tabs, respectively. In this method, the tabs on the opposite ends of the beams are located at least in part within the apertures in the opposite end frames, and the tabs are spaced from the sidewalls of the apertures, respectively. At least a part of the opposite end frames at least adjacent the aperture therein, are welded generally simultaneously to at least a part of each tab located in respective ones of the apertures, respectively.A method of assembling a dynamoelectric machine is also disclosed.

Abstract: A plasma arc spray overlay of cladding metals is used over joints between clad metal pieces to provide a continuous cladding metal surface. The technique permits applying an overlay of a high melting point cladding metal to a cladding metal surface without excessive heating of the backing metal.

Abstract: The object of the invention is to join or fuse an upper plate having ink flow channels and a lower plate having a multicolored pattern, the joining being accomplished without clogging any ink flow paths.A pattern having different colored parts (11-14) and apertures is formed in a lower plate (10). Ink flow channels (111-114) each having respective ink input ports (211-214) are formed in an upper plate (11).The ink flow channels (111-114) are coated with solder mask and the bottom of the upper plate (11) is then coated with solder. The upper and lower plates are pressed together at from 2 to 5 psi and heated to a temperature of from 295.degree. F. to 750.degree. F. or enough to melt the solder.After the plates (10,11) have cooled and the pressure has been released, the solder mask is removed from the interior passageways by means of a liquid solvent.

Abstract: The invention relates to a method for bonding pieces of iron group sintered metals, and more particularly to a method for producing a sintered part having a complicated configuration by bonding more than 2 iron group sintered metal pieces to each other at the flat faces thereof according to this method, through holes are provided in predetermined locations of each of the metal pieces except the one constituting the lowermost layer, and if necessary, a concave groove having a depth of 0.03-1 mm is provided on the metal face to be bonded in each layer. The metal pieces are then superposed with said through holes coinciding with each other, with a brazing alloy being inserted into each of the through holes; heating the whole assembly so as to help said brazing alloy infiltrate into each of the interfaces, thereby bonding more than 2 pieces of iron group sintered metals to each other at a low cost.

Abstract: A method of making a workpiece holding device having an expandable mandrel including the step of melting copper ring seals around the bore next to the ends of the expandable mandrel to maintain the mandrel rigidly in place. The holding device includes an expandable sleeve of generally cylindrical shape having a thin outer shell with a pair of opposed thick wall circular ends integral with the shell extending radially inward to form a bore. An elongated generally circular central body with a central bore for containing pressure and adapted to be mounted on a machine tool having an outside diameter engageable with the bore. A pair of opposed arcuate undercut grooves are formed at an intersection of the outer shell and the circular ends to prevent the formation of destructive stress concentration at the intersection. Chamfers are formed at the outer edges of the bore and copper rings are inserted therein and melted to form a seal between the bore and mount the expandable sleeve to the central body.

Abstract: A multi-layered vessel which includes a multi-layered generally cylindrical shell and at least one multi-layered generally hemispherical head of less thickness than the shell. The head has a main section and discontinuity neutralizing portion adjacent the shell. Each layer of the head main section and the discontinuity neutralizing portion have gores with substantially equal radius of curvature. The discontinuity neutralizing portion gores have a different center of curvature than the gores of the head main section.

Abstract: In the manufacture of rotating anodes for X-ray tubes consisting of a basic body made of high-melting metal or its alloys and one or a plurality of graphite parts, the graphite parts (3) are provided with grooves (5) and boreholes (6) before the individual parts are joined by soldering. The grooves (5) mainly having a semicircular cross section are provided in the surface (4) of the graphite parts (3) to be joined by soldering. The boreholes (6) extend through the graphite parts (3) and feed into the grooves (5) approximately vertical to the graphite surface (4). Excessive solder and gases formed during soldering may flow or escape by way of the grooves and boreholes, which produces an improved soldered joint with increased adhesive or bonding strength between the basic body and the graphite parts.

Abstract: An improved basket assembly and method of making same of the type designed for use in a sugar centrifuge that includes an annular mounting flange containing an upwardly-flared frustoconical seat and an open-bottomed conical element adapted to mate in assembled relation with the aforementioned frustoconical flange seat. The apparatus is characterized by shaping the opposed surfaces at the lower end of the cone and base of the seat so as to cooperate with one another in assembled relation to define an upwardly-opening and inwardly-flared continuous annular groove for the reception of a weld. The apparatus also includes a circumferentially-spaced series of apertures in the wall of the cone opening onto the conical surface of the seat when assembled to receive a corresponding number of plug welds.

Abstract: Two improvements to the electrical conductor connection disclosed in U.S. Pat. No. 4,163,869. The first is a new and improved process for forming by means of multiple timed MIG arc welding, an electrical connection between at least two lapped aluminum conductors, wherein neither conductor member has a pilot hole, thereby eliminating preforming and alignment requirements. The improved process produces the same full penetration weld with the same highly desirable substantially cylindrical weld nugget as the process of U.S. Pat. No. 4,163,869 with a preformed pilot hole does. The second improvement is a new and superior electrical conductor connection and a method of forming same between at least two lapped aluminum conductors. The connection so formed includes a weld nugget having a substantially rectangular cross-sectional configuration at the interface. The rectangular shape of the weld nugget at the interface increases the mechanical torque capacity and the electrical conductivity of the connection.

Abstract: A post member and a rail member are joined together by a short hollow fitting. The fitting has a head shaped to mate with one of said members. A fitting is welded to each of the members.

Abstract: High-strength metal joints are formed by a combined weld-braze technique. A hollow cylindrical metal member is forced into an undersized counterbore in another metal member with a suitable braze metal disposed along the bottom of the counterbore. Force and current applied to the members in an evacuated chamber results in the concurrent formation of the weld along the sides of the counterbore and a braze along the bottom of the counterbore in one continuous operation.

Abstract: A wire spoke, non-suspension type, automotive wheel in which the spokes are operably untensioned prior to vehicle loads being placed upon the wheel. An outer tubeless tire rim with a drop center is mounted to a wheel center which includes a substantially thick and solid felly connected to a concentrically positioned hub. Wire spokes extend radially outward from the hub in circumferential array and have tenons or feet on inner ends thereof which are anchored within recesses at front and rear ends of the hub. Radially outer ends of the spokes are plain terminations welded in the shape of a plug anchor within circumferentially spaced bores in the felly to secure the spokes and permit wheel formations which exhibit the classic beauty and elegance of a suspension wire spoke wheel, combined with durability, strength and ease of construction.

Abstract: A box tool joint member of generally tubular configuration is adapted for securement by welding to one end of a steel tube to form a drill pipe. The box tool joint member comprises a body having a cylindrical outer periphery, an internally threaded socket at one end of the body, and a weld neck of smaller outer diameter than the body adjacent to the other end of the body. A tapered transition piece connecting the neck with the adjacent end of the body provides an elevator shoulder. A correlative pin tool joint member is welded to the opposite end of the tube to complete the drill pipe.The box tool joint member has an annular band of hard facing over the outer periphery of the transition piece and extending down over the adjacent part of the weld neck and up around the adjacent part of the body. The hard facing is corrosion resistant and has a smooth finished surface. Underneath the hard facing and extending beyond both ends of the hard facing is an annular butter layer of non-hardenable steel.

Abstract: Plates, of steel or other suitable material and which are appropriately sized, are welded together to form a fabricated swing jaw body for a jaw type crusher. The barrel, disposed proximate the upper extremity of the swing jaw body and which houses the bearings and shaft that operate the swing jaw, is formed either: from a continuous plate rolled into a cylinder of proper size and welded into the swing jaw body; from a number of plates welded to each other and to the swing jaw body to form therewith a cylinder like enclosure for said bearings and shaft; or from a number of plates with openings formed therethrough and stacked and welded one against the other and to said swing jaw body to form said enclosure. A piece of non-rectangular bar stock is secured proximate the bottom of the swing jaw body and has formed therein a seat for the toggle plate mechanism of the crusher jaw.

Abstract: A wall lining sheet, particularly, but not exclusively, for lining the interior end walls of freight railway cars. The wall lining sheet comprises a metal sheet having a plurality of spaced-apart attachment tabs each defined by a configured slot extending through the sheet. Each of the tabs has a bendable free end portion whereby the bendable free end portion may be displaced outwardly from the plane of the sheet. The wall lining is particularly useful in relining the interior surface of corrugated end walls of freight railway cars after the end wall has been deformed and reshaped substantially to its original state.

Abstract: A wire spoke, non-suspension type, automotive wheel in which the spokes are operably untensioned prior to vehicle loads being placed upon the wheel. An outer tubeless tire rim with a drop center is mounted to a wheel center which includes a substantially thick and solid felly connected to a concentrically positioned hub. Wire spokes extend radially outward from the hub in circumferential array and have tenons or feet on inner ends thereof which are anchored within recesses at front and rear ends of the hub. Radially outer ends of the spokes are plain terminations welded in the shape of a plug anchor within circumferentially spaced bores in the felly to secure the spokes and permit wheel formations which exhibit the classic beauty and elegance of a suspension wire spoke wheel, combined with durability, strength and ease of construction.

Abstract: A pressing worm or screw, especially for filter presses of the type used to press liquids from solids, e.g. oils from eatable-oil-bearing seeds, is formed with an outwardly opened groove along its flight or thread which is filled with a harder metal than the flight by deposit welding.

Abstract: Improved method of attaching sleeve-like fittings to a wrapped wire well screen by welding is faster and stronger than prior methods, provides better mechanical sealing, and eliminates changes in the width of the screen slots. The fitting is axially slotted where it is intended to telescopically overlie several wraps of the well screen. The application of weld beads in the axially directed slots causes the fitting to shrink into tight mechanical contact with the well screen and prevents the enlargement of the slots in the well screen which is possible when a circumferentially oriented weld bead is applied.

Abstract: A ferrous or like metal attachment or coupling, such as a heavy round lug, includes a generally cylindrical body having a beveled base and a divider land or keel extends diametrically across the base and projects downwardly therefrom and divides the beveled base into two generally coequal component weld surface areas on opposite sides. The body of the metal coupling is positioned at a desired and preselected point on the external surface of a metal pipe or tube whereupon the metal coupling is preliminarily welded to join the divider land or keel to the external surface of the metal pipe or tube.

Abstract: An electrical conductor connection between at least two aluminum conductors which includes a weld nugget having a substantially cylindrical cross-sectional configuration perpendicular to the major surfaces of the aluminum conductors. The ends of the weld nugget are convexly cupped and extend outwardly past the major surfaces of the aluminum conductors to provide visual verification of joint integrity. The electrical conductor connection is formed by a method which includes providing an aperture in one of the conductors to be joined and providing a recessed backup against the other conductor, aligned with the aperture. Timed, multiple sequence MIG arc spot welding provides a weld nugget having the desired shape and diameter at the interface or throat between the two conductors. The method also enables the welding operation to be performed out of position, without sag or run of the molten pool of aluminum.

Abstract: A procedure for joining parts by brazing-diffusion byEffecting a primary machining on the parts to be assembled in order to prde reservoirs for filling metal,Arranging a strip between the parts or deposit a coating on one of the parts,Filling the filling metal reservoir with a metal powder,Holding the parts together and providing pressure on the surfaces to be joined by means of screws or the equivalent,Placing the assembly within an enclosure containing a controlled atmosphere which is heated to cause, first, the filling metal to flow and, second, diffusion to take place, thenPerforming a secondary machining to eliminate the retaining screws and if possible the reservoirs.

Abstract: A method of butt welding titanium-clad steel plates whereby the steel portions of the abutting plates are first welded together, then the portions of the steel plates adjacent to the titanium portions are metallized with a refractory metal coating, which coating is compatible both with the steel layer and with the titanium portions, then titanium is cast into the space between the titanium plates by a known method to complete a butt weld between the titanium clad steel plates, having continuous titanium and steel segments.

Abstract: A tile which forms part of a wear-resistant lining that covers a metal backing has a tapered hole and is held against the backing by a fastening device which fits into the tapered hole. The fastening device includes a threaded element that projects from the backing into the hole and an anchor that threads over the threaded element. The anchor fits completely within the tapered hole and has a tapered side wall, the taper of which corresponds to that of the hole.

Abstract: A curved section is provided for connecting in a conduit through which passes a fluid stream having solid material entrained therein. A plurality of wear strips are attached to the inside wall of the curved section. They are positioned for the solid material to impinge thereon as the fluid stream changes its direction of flow as it passes through the curved section. The wear strips are elongated members of wear resistant material positioned side-by-side along the inside wall against which the solid material impinges. The abutting sides of adjacent wear strips are beveled so that the outer edges of one adjacent strip extends over the inner edge of the other adjacent strip to provide a continuous surface of wear resistant material in the path of the entrained solid material.

Abstract: A method of welding a pair of aluminum driveshaft components together is disclosed. A first driveshaft component is formed with a hollow cylindrical end portion having an inside diameter and a flat radially-extending end surface. A second driveshaft component is formed with a cylindrical end portion extending axially from a flat radially-extending shoulder. The end portion of the second driveshaft component has an outside diameter which is approximately equal to the inside diameter of the cylindrical end portion of the first component. The cylindrical end portion of the first component is telescopically positioned about a portion of the cylindrical end portion of the second component such that a predetermined distance defining a longitudinally-extending annular gap therebetween is maintained between the end surface of the first component and the shoulder of the second component. A welding compound is supplied within the gap to weld the first and second driveshaft components together.