3results about How to "Reduce reheating" patented technology

The invention provides an auxiliary cooling device for friction welding of a ring pipe structure and a working method of the auxiliary cooling device, and belongs to the technical field of friction welding. The problems that in the prior art, due to the fact that the surface of an inner ring of a large-diameter-thickness-ratio ring material dissipates heat slowly, the cooling speed of a welding area is uneven, residual stress is increased, the strength of a welding joint is affected, and due to the fact that the surface of the inner ring dissipates heat slowly, microstructure changes are uneven, and the mechanical property of the material is affected are solved. The device comprises a tailstock side clamp, a main shaft side clamp, an inert gas connecting pipe, a gas nozzle and a cooling medium spraying mechanism, the tailstock side clamp is installed in a movable sliding table box body of friction welding equipment, a tailstock side part to be welded is clamped in the tailstock side clamp, a main shaft side part to be welded is clamped in the main shaft side clamp, and the inert gas connecting pipe is connected with the gas nozzle. An inert gas connecting pipe is arranged in the main shaft side to-be-welded part, the outlet end of the inert gas connecting pipe is connected with the gas nozzle, and a cooling medium spraying mechanism is arranged on the inner side of the tailstock side to-be-welded part. The device is mainly used for cooling the welding seam of friction welding.

This utility model discloses a waste heat quenching device for wear plates in railway freight car bogie grooves, belonging to the field of wear plate processing technology. The device includes a guide frame, a drive box installed below the guide frame, an electric cylinder installed on one side of the drive box, a quenching box installed on one side of the guide frame, a pushing plate inside the quenching box, a swing arm installed on one side of the quenching box, and a cooling oil heat exchanger between the heat exchange box and the quenching box. This utility model solves the problems of existing quenching devices having a simple structure, poor heat exchange effect, and poor positioning effect in actual use. This utility model uses quenching oil inside the quenching box for cooling, while simultaneously pushing the wear plate of the railway freight car bogie groove to move and cool. After cooling, the swing arm pushes the wear plate into the guide groove for rapid waste heat quenching.

The invention provides an auxiliary cooling device for friction welding of solid bars and a working method of the auxiliary cooling device, and belongs to the technical field of friction welding. The problem that after welding of existing friction welding equipment is finished, due to the fact that the residual temperature of a welding seam is too high, a welded workpiece needs to be transferred to a heat treatment procedure for quenching treatment, and the strength of the welding seam cannot be improved in time is solved. The device comprises a main shaft side box body, a movable sliding table box body, a machine tool body, a tailstock fixing seat, a tailstock side to-be-welded part and a gas spraying mechanism, the main shaft side box body is installed on one side of the machine tool body, the movable sliding table box body is installed on the other side of the machine tool body in a sliding mode through a movable sliding table rail, and a main shaft side clamp is installed in the main shaft side box body through a main shaft fixing seat. The tailstock side clamp is installed in the movable sliding table box body through the tailstock fixing base, a to-be-welded workpiece on the tailstock side is clamped and fixed through the tailstock side clamp, and the gas spraying mechanism is arranged on the outer side of a welding area of the to-be-welded workpiece on the tailstock side. The device is mainly used for protecting a welding area during welding.