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2 results about "Upset welding" patented technology
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Upset welding (UW)/resistance butt welding is a welding technique that produces coalescence simultaneously over the entire area of abutting surfaces or progressively along a joint, by the heat obtained from resistance to electric current through the area where those surfaces are in contact. . Pressure is applied before heating is started and is maintained throughout the heating period. The equipment used for upset welding is very similar to that used for flash welding. It can be used only if the parts to be welded are equal in cross-sectional area. The abutting surfaces must be very carefully prepared to provide for proper heating. The difference from flash welding is that the parts are clamped in the welding machine and force is applied bringing them tightly together. High-amperage current is then passed through the joint, which heats the abutting surfaces. When they have been heated to a suitable forging temperature an upsetting force is applied and the current is stopped. The high temperature of the work at the abutting surfaces plus the high pressure causes coalescence to take place. After cooling, the force is released and the weld is completed.
A high-power hot forging and upsetting welding machine and its welding process
The application discloses a high-power hot-state forging upsetting welding machine and a welding process thereof, which comprises an electrode, a clamp group is arranged above the electrode, a supporting table is arranged below the electrode and is used for supporting a welding object, a deslagging mechanism is arranged at the outlet of the supporting table, and a clamp group is arranged above the deslagging mechanism. The application adopts a brand-new material connection process, and the material temperature change at a welding position is controlled through monitoring in the whole process, so that better welding quality is achieved. Compared with the prior art, the application is not affected by the voltage fluctuation on site, the difference in environmental temperature and the change in air humidity and the like, and has better applicability.
Owner:KA LUO WEI DE (CHANG ZHOU) ZHI NENG HAN JIE ZHUANG BEI YOU XIAN GONG SI
Anti-wrinkle welding tool
The utility model discloses a kind of anti-crease upset welding tool, including upper die part and lower die part, the upper die part and the lower die part are oppositely arranged, the upper die part includes upper die, upper pressure ring, upper die holder and nitrogen gas spring, the upper die holder inner wall is inserted and is assembled with upper pressure ring, the upper pressure ring inner wall is inserted and is assembled with upper die, the surface of the upper pressure ring is assembled with multiple nitrogen gas springs, and the nitrogen gas spring is connected with equipment main body, the lower die part includes lower punch, lower pressure ring, lower die holder and nitrogen gas spring, the lower die holder inner wall is inserted and is assembled with lower pressure ring, the lower pressure ring inner wall is inserted and is assembled with lower punch, the lower end of the lower pressure ring is assembled with multiple nitrogen gas springs, and the nitrogen gas spring is connected with equipment main body, so reduce the structure optimization part forming process wrinkling problem, improve material utilization, both can better guarantee product quality and can improve production efficiency.
Owner:SHENYANG LAIJIN AUTOMOBILE PARTS