摘要:
A method of eliminating scrubbing noise between metal to metal (or metal to ceramic) contact members that experience articulating swiveling interengagement at high force levels in excess of 5,000 psi. The method comprises: (a) preparing the interface to present at least one fresh mechanically adherable stiff surface; (b) thermally spraying a top coating thereonto consisting of at least one of (i) a self-lubricating metal, ceramic material or metal alloy, and (ii) a compliant metal; and (c) placing the coating interface into service to subject it to repeating articulating swiveling contact that functions to microweld the coating to the surface under normal operating conditions.
摘要:
A method of conducting vehicle usage data analysis is provided. The method includes providing usage data about at least one vehicle to a database. The usage data may be analyzed and compared to a member of a set of vehicle development models to determine whether to update a vehicle development model. The usage data may also be analyzed to determine whether to transmit a communication to a vehicle.
摘要:
A vehicle roof module includes a front extruded cross member, a first pair of nodes each received in an end region of the front cross member, a first and a second extruded side rail with each end region receiving one of the first pair of nodes, a second pair of nodes each received in another end region of the first and second rails, a rear extruded cross member with each end region receiving one of the second pair of nodes, and a panel mounted to the front cross member, rear cross member, and first and second side rail. Each end region of each side rail defines an interior hollow portion and has at least one nodule extending from the side rail into the hollow portion to maintain a bond gap between the side rail and the node received into the side rail end region for receiving adhesive.
摘要:
A method of making a vehicle door assembly by assembling a super-plastic formed inner door panel with a super-plastic formed outer panel. A flanging and roll hemming tool are used to form a hem flange to secure the outer door panel to the inner door panel. A room temperature curable two-part epoxy adhesive is used to lock the inner and outer door panels together. The epoxy adhesive is permitted to cure before the assembly is heated in electro-operations or paint ovens. Hinge and striker attachment areas are provided that are not substantially thinned or stretched during the super-plastic forming process so as to preserve the strength of the inner and outer door panels in such areas.
摘要:
A friction stir spot welding tool and a self-piercing riveting tool are disclosed for joining parts. The parts are clamped between a head and anvil support of the friction stir spot welding tool or the self-piercing riveting tool. A plurality of clamping and heating modules are attached to an attachment fixture on the head and the anvil support that heats the area around the pin of the friction stir spot welding tool or self-piercing riveting tool prior to and during the joining operation.
摘要:
A friction stir spot welding tool and a self-piercing riveting tool are disclosed for joining parts. The parts are clamped between a head and anvil support of the friction stir spot welding tool or the self-piercing riveting tool. A plurality of clamping and heating modules are attached to an attachment fixture on the head and the anvil support that heats the area around the pin of the friction stir spot welding tool or self-piercing riveting tool prior to and during the joining operation.
摘要:
A crush rail or other structural member of a vehicle is provided with crush triggers. The crush triggers are formed by heating localized areas of the crush rail or other part and allowing them to cool slowly to provide increased ductility and reduced strength in a localized region. The crush rail is designed to collapse in a series of convolutions in a regular and repeated pattern. Crush triggers may be provided on body pillars, steering columns, drive shafts, engine support cradles, and other parts of a vehicle. A plurality of crush triggers may be provided on a single structural member depending upon impact absorption requirements.
摘要:
A method of providing a smooth paintable surface after aluminum joining. Two aluminum pieces are welded together to form a joint, and a weld bead is formed at the joint. An aluminum spray filler is applied by thermal spraying on an area around the weld bead, and the area around the weld bead and aluminum spray filler is ground to produce a smooth paintable surface at the joint. The area around the weld bead is preferably roughened prior to spray brazing. The roughening is preferably produced by a process selected from grit blasting, rough sanding, and depositing a flux.
摘要:
A method of depositing a dielectric coating, comprising the steps of forming an unroughened or roughened, as-cast or wrought substrate surface to receive the coatings; and flame spraying a single premixed thermoplastic epoxy/hardener powder onto the surface, the resultant in-flight heated powder being chemically activated to impact the surface and form a chemically adhering coating, the coating being cured in-situ to be dielectric and thermally conductive.
摘要:
A heat exchanger assembly including at least one aluminum based tube having an internal surface and an external surface, an aluminum based lithium-magnesium composition cladding applied to either one of the internal surface and external surface of the tube, and at least one aluminum based component disposed adjacent the cladding, a modified aluminum brazing flux applied to a joint between the surface and one component. The modified aluminum brazing flux comprises cesium fluoride, lithium fluoride, or both. Preferably, the cladding further comprises cesium. To manufacture the heat exchanger assembly, the tube and component are joined together with flux applied in the area of the joint using a controlled atmosphere brazing (CAB) process.