High-speed rail axle anvil die surface strengthening surfacing welding process

Abstract

The invention discloses a high-speed rail axle anvil die surface strengthening surfacing welding technology which is carried out through a simple welding auxiliary device, the welding auxiliary device comprises a structural part frame, the structural part frame comprises a bottom plate and side plates arranged at the two ends of the bottom plate, and supporting legs are arranged on the front side and the rear side of the bottom of each side plate; an adjusting lifting device is arranged on the bottom plate, and the upper surface of the adjusting lifting device is matched with the bottom of the high-speed rail axle anvil die and provided with a plurality of electric heating belts. A frame front movable heat preservation door, a frame rear movable heat preservation door and a frame heat preservation movable cover plate are movably arranged between the front ends and the rear ends of the two side plates and between the tops of the two side plates respectively. According to the method, the investment cost is low, field operation and maintenance are convenient, the repairing time is short, after surfacing repairing is conducted on the upper semicircular anvil die and the lower semicircular anvil die, it can be effectively guaranteed that the welding quality that the clamped red steel is not abraded, cracked, disengaged and the like due to uneven cold and hot and alternating loads in the periodic use process can be effectively guaranteed, and the rolling operation use requirement is met.

Description

technical field [0001] The invention belongs to the field of welding technology, and relates to a surface strengthening surfacing welding process of an axle-type anvil mold of a high-speed railway. Background technique [0002] The production process of axles of various specifications in rail transit equipment is as follows: cutting from qualified raw materials—heating in a heating furnace—axle forging—heat treatment—rough machining—semi-finishing—finished product inspection—packaging and warehousing. The core link of the axle forging is through the 12.5MN rapid forging hydraulic press, connecting the upper and lower semicircular anvil dies to forge axles of various specifications. Due to long-time rolling, the red steel clamped by the upper and lower semicircular anvil dies is subjected to uneven cooling and heat and alternating loads during use, which causes cracking, peeling, wear, etc. on the surface of the upper and lower semicircular anvil dies that contact the red ste...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the background technology that the surface of the upper and lower semicircular anvils of the forging hydraulic press contacting the red steel cracks, falls off, wears, etc., and needs to be replaced frequently from time to time, which affects the production rhythm, the present invention provides a high-speed railway axle-type anvil The enhanced surfacing welding process on the mold surface not only has low investment cost, convenient on-site operation and maintenance, and short repair time, but also can effectively ensure that the clamping red steel is protected from cold and heat during cycle use after the upper and lower semicircular anvil molds are repaired by surfacing welding. Uneven and alternating loads will not produce welding quality such as wear, cracking, and falling off, which can meet the needs of rolling operations

Images