A stress relief device and stress relief method for welded seams of axle-type pipe parts
A stress-relieving and axle technology, applied in furnace types, furnaces, heat treatment equipment, etc., can solve the problems of increasing axle weight, increasing manufacturing costs, and low production efficiency, and improving weld quality, reducing manufacturing costs, and improving production efficiency. Effect
Active Publication Date: 2019-03-05
江苏宝京汽车部件有限公司
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Problems solved by technology
[0002] Welding defects and welding stress concentration usually exist in the manufacturing process of pipe parts such as integrated semi-trailer axles, especially the welded part of the brake bracket and the axle bottom plate is prone to fatigue failure, which will cause the axle to break and cause traffic accidents, and annealing is required to relieve stress , in the traditional method, anneal after heating in a heating furnace, the heating device is bulky, and the heat utilization rate is low; in the prior art, the thickness of the axle tube wall is generally increased, or a higher-grade alternative material is used to reduce the impact of welding stress concentration on the axle Quality impact, increasing the wall thickness also increases the weight of the axle, reduces the utilization rate of materials, increases the manufacturing cost, requires high welding technology, low production efficiency, and has defects such as unstable welding quality
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[0023] As shown in the figure, a welding seam stress relief device for axle pipes includes a base 8, which provides the overall strength support of the stress relief device; a pair of mounting brackets are installed on the base 8 to clamp the axle from both ends. The thimble 2, 9, the movable thimble 2, and the fixed thimble 9 clamp the axle tube tightly from both ends, which is convenient for the subsequent stress relief operation. The thimble 2, 9; The axle of axle; Wherein on the base 8, the installation support of one end is fixed support 10, and the installation support of the other end is movable support 11, and the position that is positioned at the position below movable support 11 on the base is provided with guide rail 12, and movable support 11 bottom is connected with can drive movable support 11 The slide plate 7 sliding along the guide rail 12, after the axle is hoisted in place, one end is tightened by the fixed thimble 9 on the fixed bracket 10, and the movable ...
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Abstract
The invention relates to an axle tubular product weld joint destressing device and a destressing method. A movable support on a base moves along a guide rail through a sliding plate so as to drive an ejector pin and an ejector pin on a fixed support to tightly press and clamp an axle from two ends; induction coils are suspended and installed on cross beams of the movable support and the fixed support through suspension clamps; air cylinders at the rear ends of the suspension clamps provide power for adjusting mechanisms to adjust opening spaces and torsion angles of the induction coils; the induction coils are matched with axle weld joint positions; the inner diameter of each induction coil is larger than the outer diameter of each axle weld joint; and the axle tube weld joint positions are locally inductively heat to a certain temperature through the induction coils, and are cooled after being subjected to heat insulation, so that the axle tubular product weld joint stress can be accurately removed, the weld joint quality is improved, the manufacturing cost is reduced, and the production efficiency is improved.
Description
technical field [0001] The invention relates to a stress-relief device and a stress-relief method for the welding seam of axle-type pipe parts. Background technique [0002] Welding defects and welding stress concentration usually exist in the manufacturing process of pipe parts such as integrated semi-trailer axles, especially the welded part of the brake bracket and the axle bottom plate is prone to fatigue failure, which will cause the axle to break and cause traffic accidents, and annealing is required to relieve stress , in the traditional method, anneal after heating in a heating furnace, the heating device is bulky, and the heat utilization rate is low; in the prior art, the thickness of the axle tube wall is generally increased, or a higher-grade alternative material is used to reduce the impact of welding stress concentration on the axle Quality impact, increasing the wall thickness also increases the weight of the axle, reduces the utilization rate of materials, in...
Claims
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IPC IPC(8): C21D9/50C21D1/42
CPCC21D1/42C21D9/50Y02P10/25
Inventor 吴振刚郦希张治军
Owner 江苏宝京汽车部件有限公司