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Collectively, they are known as the HP-67/97. [3] Marketed as improved successors to the HP-65, the HP-67/97 were based on the technology of the "20-series" of calculators (HP-25, HP-19C etc.) introduced a year earlier. The two models are functionally equivalent, and programs on magnetic cards can be interchanged between them.
Close-up view of a friction stir weld tack tool. The bulkhead and nosecone of the Orion spacecraft are joined using friction stir welding. Joint designs. Friction stir welding (FSW) is a solid-state joining process that uses a non-consumable tool to join two facing workpieces without melting the workpiece material.
Joining of soft alloys such as copper and aluminium below their melting point Electrical contacts Diffusion welding: 45: DFW No weld line visible Titanium pump impellor wheels Explosion welding: 441: EXW Joining of dissimilar materials, e.g. corrosion resistant alloys to structural steels Transition joints for chemical industry and shipbuilding.
The tool center is typically placed in the centerline of the joint for similar joints such as aluminum/aluminium or copper/copper joints; in contrast, it is shifted towards the softer materials in DFSW called tool offset. [12] It is a significant factor to achieve a joint possessing smaller welding defect and higher mechanical properties.
Klimenko in the mid-1960s and patented in 1967, [7] experimentally proven and developed into a commercial technology at The Welding Institute (TWI) in the United Kingdom and patented again in 1991: the friction stir welding (FSW) process, [8] is a solid-state joining process that uses a non-consumable tool to join two facing workpieces without ...
Friction stir spot welds have a high strength, so they are even suitable for parts that are exposed to particularly high loads. In addition to automotive and rail vehicle construction, the aerospace industry is developing the process e.g. for welding cockpit doors for helicopters. [3]
Cornwell Quality Tools is an American privately held company manufacturing tools for the automotive and aviation industries. [1] The company is currently based in Wadsworth, Ohio . Cornwell remains as one of two remaining mobile tool companies that still produce their own hand tools in house at their Albion, Pennsylvania foundry and Mogadore ...
Rotary friction welding is widely implemented across the manufacturing sector and has been used for numerous applications, [17] [18] [19] including: Parts in gas turbine such as: turbine shafts, turbine discs, compressor drums, [20]
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