High-strength welding compensation process for mining loop chain

Abstract

The invention discloses a high-strength welding compensation process for a mining loop chain. The high-strength welding compensation process comprises the following steps of: (1) bending two ends of the loop chain, and ensuring that the distance at a port is less than 1mm; (2) clamping the two ends of the loop chain by using clamping jaws, and heating the middle part of the loop chain; (3) after heating to a certain temperature of A, allowing the two clamping jaws to move towards the center, and when it is detected that resistance is linearly and rapidly increased, making the clamping jaws stop moving; (4) continuously heating to a certain temperature of B; (5) allowing the two clamping jaws to continue to move, and meeting the requirement that the movement amount at the moment is 1 / 3 of the first-time movement amount; (6) carrying out high-temperature sintering on the weld joint by adopting open fire, and carrying out water quenching after sintering is completed; and (7) cutting off the protruding part of the weld joint through a scraper, and polishing the weld joint. By means of the welding compensation mode, the phenomenon that welding points are broken due to heavy loads in the using process can be well avoided.

Description

technical field [0001] The invention relates to a high-strength welding compensation process for mine chains. Background technique [0002] The chain knitting machine in the mining chain production industry will take certain measures during the chain knitting process so that the distance between the ring openings is less than 1mm, and the two ends are required to be parallel, and the bell mouth is not allowed. [0003] When the distance between the two ends is less than 1mm, the next welding process can be performed to weld the two ends. In the traditional welding process, direct heating and no solder are used. After the welding is completed, the diameter of the weld will be smaller than the diameter of the bar, and the welding strength is not enough to handle heavy load conditions. [0004] To solve this problem, the strength of the weld can be significantly improved by adopting an appropriate length compensation during welding, but the existing compensation methods are di...

AI Technical Summary

Problems solved by technology

After the welding is completed, the diameter of the weld will be smaller than the diameter of the bar, and the welding strength is not enough to handle heavy load conditions

[0004] To solve this problem, the strength of the weld can be significantly improved by adopting an appropriate length compensation during welding, but the existing compensation methods are direct in place or linear compensation, which has poor compensation ability and is prone to welding defects such as cracks , which increases the risk of welding points

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