Abstract: A resistance welding electrode body is fitted with a metal pin which serves as an anchor point for an electrode welding tip. The electrode welding tip contains two lead-in notches and diagonal grooves that allow the electrode tip to be locked onto the electrode body. This form of electrode has been found advantageous in terms of retaining the electrode tip onto the electrode body during resistance spot welding.

Abstract: There is described a welding station for motor-vehicle bodies or subassemblies thereof in which the body side panels are engaged during welding by locking devices arranged in the space between the body sides and carried by two locating gates which are rigidly connected to each other by means of quick coupling means.

Abstract: An electric arc spray gun wherein the spray tips can be precisely aligned is disclosed. The gun body includes converging wire guides located at an acute angle with respect to the horizontal. The diameter of the central portion of each wire guide is slightly less than the bore in which it is received permitting the wire guide to be deflected by the application of pressure to its outer surface. Such pressure is applied by the advancement or retraction of threaded fasteners received through the gun body. By deflecting the wire guides relative to one another, the spray tips can be precisely aligned. The wires which pass through the wire guides and the spray tips come together within the air cap on the gun resulting in the gun producing a very highly defined metallic spray.

Abstract: An improved tungsten insert gas welder, having a means to remove heat energy using pressurized air, and a method for removing the heat away from the welder head area. A source of pressurized air is delivered though a hose to the welder head, and is directed through heat conductive air tubes within the welder head, is forced through a plurality of coils which surround an area that contains heat energy created during the welding process. As the air moves through the coils, it acquires some of the heat energy within the welder head. The heated air is vented into an outer jacket, which contains the electrically conductive cables, and an airspace surrounding the cables. As the heated air moves toward a rear connector block, it contacts the length of the cables, and is able to transfer some of the heat to the cables.

Abstract: A torch comprises inner parts carrying the welding current. The inner parts are enclosed by a nozzle, an intermediate member and an outer neck section. The intermediate member is connected to the outer neck section with a left handed internal screw and to the nozzle with a right handed external screw. The inner parts are surrounded by electrically insulating tubes for preventing an electrical breakthrough. At least an intermediate one of the insulating tubes is coated with a thermally conducting paste for providing good heat conduction between the outer and inner parts.

Abstract: To form a welded joint between a fastening means (1) and a structure (2), a fastening means (1) with a holder (3) and a connecting element (4) is proposed. The holder (3) essentially consists of an electrically insulating material. The connecting element (4) consists of a substantially electrically conductive material. The holder (3) substantially surrounds the connecting element (4). The connecting element (4) has a contact face (5) located inside the holder (3). The holder (3) has a through-orifice (6) at least partially overlapping the contact face (5). A contact piece (7) of an electrically operated welding device is introduced through the through-orifice (6).

Abstract: A lid for a chip/package system includes a body sized to fit over an integrated circuit chip and being connectable to a package. The body has at least two regions exhibiting different coefficients of thermal expansion, with one CTE matching that of the chip and the other matching that of the package.

Abstract: A hot chamber die casting machine for casting aluminum and its alloys includes separated ceramic parts, namely a ceramic injection cylinder constituting a pump body, a ceramic outer sleeve, a ceramic injection pipe, and a metallic or thermet flange avoiding a large one piece ceramic body and stress concentrations at critical points. The outer sleeve holds the injection cylinder together with the injection pipe in the molten metal. The flange is fixed to a structure which is outside of and independent from a molten metal container and a heating furnace, thus temperature fluctuations do not affect this injection apparatus. The flange can also be fixed to the structure to which an injection hydraulic cylinder is secured in such a manner that the centers of the hydraulic cylinder, the plunger and the injection cylinder are aligned to perform a stable injection operation. A seal ring is disclosed between no-parallel conical cone shaped-fitting ends between the injection pipe and the injection cylinder.

Abstract: Edge-dam blocks assembled with their upstream faces in keyed mating interengagement with downstream faces of adjacent blocks form an endless edge dam revolvable in a preselected path for defining a boundary of a moving-mold casting region. The edge dam keeps molten metal in the casting region. Upstream and downstream faces of adjacent blocks have mutually complementary shapes for minimizing intrusion of molten metal between abutting blocks. Keying engagement between abutting blocks prevents relative translational slippage of blocks toward or away from molten metal. An abuttable face on each block has at least one protrusion such as an integral elongated key extending perpendicularly to a casting belt associated with the casting region, or the protrusion includes two round pins having projecting tapered ends. Another abuttable face has a recess such as a keyway for snugly receiving a key on an adjacent block or has two tapered recesses for snugly receiving two tapered projections of an adjacent block.

Abstract: An improved method of lost foam casting of aluminum silicon alloys utilizing a pattern formed of an expandable polymeric foam having a decomposition temperature less than 300.degree. C., and a heat of decomposition less than 600 Joules per gram. The foam pattern preferably has a heat of fusion less than 60 Joules per gram and a bulk density in the range of one to four pounds per cubic foot. The lost foam casting procedure has particular use when casting hypereutectic aluminum silicon alloys containing from 16 to 30% silicon, and eliminates the "liquid styrene" defect which occurs when casting such alloys in a lost foam process utilizing conventional polystyrene foam patterns. When casting hypoeutectic aluminum-silicon alloys containing from 5% to 8% silicon, the method eliminates the "fold" defect.

Abstract: A spot welding apparatus having a welding gun with movable and fixed electrodes carried on an articulating wrist, the apparatus comprising: a) a robotically actuated articulating wrist carrying the gun for movement to and from a welding position for a workpiece; b) a primary cylinder assembly connecting the wrist to the movable electrode of the gun for imposing pressure by such movable electrode to the workpiece and to the fixed electrode during a welding stroke toward the workpiece; and c) a fixing cylinder assembly connecting the wrist to the fixed electrode, the fixing cylinder assembly having (i) a fixing cylinder housing with a movable fixing piston therein connected to the fixed electrode of the welding gun and having a fixing piston stop, (ii) a primary balancing spring acting between the fixing cylinder housing and the movable fixing piston to carry the weight of the gun, (iii) structure for introducing a fixing air pressure into the fixing cylinder housing to urge the fixing piston to a position lock

Abstract: A shot sleeve for a die casting machine includes an elongated hollow body for receiving and guiding a shot plunger. This body defines an elongated chamber of predetermined cross-section having a front opening leading to a sprue runner of a die. The cross-section enlarges over part of its length towards the front opening. The plunger's front surface can include a conical surface which tapers away from a perimetrical scraping edge of the plunger, the conical surface having an axial end surface of smaller cross-section than the perimetrical edge. The arrangement allows undesirable material such as scrape peripheral portions of a slug of semi-solid metal to be trapped in a biscuit which remains in the shot sleeve after formation of a part.

Abstract: A splicing machine for connecting metallic bands including at least three toolings determining successively the cutting profile of both edges (m1, m2) to be connected, the welding of both edges on to one another and the flattening of the welded matter in excess. The machine includes a tool carriage (3) mounted to slide parallel to the running direction of the bands (M1, M2) on which are mounted to slide, perpendicular to the running direction, at least two supporting chassis (41, 51), each for one of the connecting toolings (4,5), a motor and a worm (32) for positioning either connecting tooling (4,5) in a common working position, by sliding the tool carriage (3) and apparatus to control the transversal sliding motion of the corresponding tooling for the actuation of the latter.

Abstract: An adapter enables a conventional MIG welding machine to successfully use spoked wire wheels on which weld wire is wound. The adapter assembles over a rotatable hub that is also conventional. The adapter has a notch that mates without backlash with a post on the hub, thereby assuring that the hub and adapter rotate together. The adapter also has tabs that engage spokes of the wire wheel without backlash. Accordingly, the wire wheel and hub rotate together without backlash. A frictional drag on the hub is transmitted by the adapter to the wire wheel, so that normal operation of the welding machine does not cause wire wheel coasting and unraveling of the weld wire. The adapter allows field retrofit of existing welding machines so they can use the wire wheel in place of prior wire spools. In a modified embodiment, the adapter is made of two parts that are angularly adjustable relative to each other to enable the adapter to engage the spokes of different wire wheels.

Abstract: Molding sand filled in a space defined by a pattern plate and a flask is pre-compacted before the molding sand is completely pressed. A pre-compacting member is inserted into the molding sand toward the pattern plate, and then is stopped based on a predetermined depth of the pre-compacting member in the molding sand or a predetermined pressure caused by the pre-compacting member in the molding sand.

Abstract: Method of sprayforming bulk metal deposits that replicate a master pattern: (i) casting and solidifying ceramic about a master pattern to form a spraying pattern; (ii) after removing the spraying pattern from the master pattern, heating the ceramic spraying pattern to a sustained temperature to effect an isothermal diffusion dependent microstructural transformation; (iii) while in such heated condition, thermally spraying allotropic metal particles onto the heated spraying pattern to form a deposit having a bulk thickness, the particles impacting the spraying pattern, or previously deposited particles, at a temperature above the sustained temperature of the spraying pattern; (iv) holding the deposit on the heated spraying pattern sufficiently long enough to allow the particles of the deposit to undergo a diffusion reaction that relieves internal stresses due to deposition and solidification; and (v) thereafter gradually cooling the deposit to room temperature to produce a unitary article with essentially no d

Abstract: Equipment for continuous casting of strands of metals, preferentially ingots of aluminium. The equipment comprises a flexible casting mould 1 that may be rectangular with two side faces 4, 5 restrained against movement and two flexible side faces 2, 3. The flexible side faces are provided with a stiffening part 36 in their middle regions, that sustains such a rigidity that the shape of the side faces in said regions are substantial constant as the side faces are bowed. The restrained side faces 4, 5 may have a stiffening part that passes lengthwise through the side face and possibly through the adjacent corners. This will have the effect that the flexible faces will behave as rigid affixed in their ends. The stiffening part 36 of the flexible side faces is attached to drag beams 6, 7 in an actuating mechanism 43. The actuating mechanism comprises pull/push bars 14, 15, 16, 17 that via link arms 23, 24, 25, 26 are connected with swingable force transmitting plates 27, 28 swinged by means of an actuator.

Abstract: The present relates to an method to produce a molding apparatus for molding plastic parts which comprises a cavity insert and a core insert wherein each insert has an open area on the shell or back side thereof. A device for circulating fluid through each chamber cools the inserts. In one preferred embodiment, the cavity and core inserts are made using a mold having a ceramic formulation including generally uniform size aggregate materials and carbon fibers. In certain embodiments, the apparatus further includes pressure bearing devices, for absorbing molding pressure during operation of the molding apparatus.

Abstract: An oscillating mold for continuously casting slabs, preferably of steel, has long side walls and short side walls freely movable relative to the long side walls, and an immersion outlet. The long side walls define a center-symmetrical casting funnel having a funnel shape which is configured such that the distance between the long side walls in the casting funnel is reduced toward the outlet end of the mold and that in the meniscus area and at least along the length of the immersion outlet the funnel shape corresponds to or follows the outer cross-sectional size of the immersion outlet. The long side walls have adjacent the casting funnel a shape which is linear and planar over the mold length and center-symmetrical and concave transversely of the mold length.

Abstract: The invention relates to an apparatus for casting a conductor of a cage rotor of an induction motor. A rotor core (13) comprising a laminated steel sheets is housed in a recess portion of a casting mold, an upper end portion thereof is held by a holding portion (70) and molten metal is supplied into a plurality of slots formed in the rotor core, thereby forming a plurality of conductor rods and a pair of end rings connecting the ends of the conductor rods with one another. The holding portion (70) comprises a cup (72) and a cylinder (73), and an axial dimension of the cup (72) is selected in correspondence to an axial dimension of the rotor core (13) housed in the recess portion of the casting mold. Further, by using a double cylinder (77, 79) in the holding portion (70), a rotor having higher quality can be obtained. For this reason, the same conductor casting apparatus can be used for casting the conductor of the rotor having different axial lengths and qualities depending on specifications.