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Method for producing round-link chain

A production method and technology of circular chain, applied in the field of mechanical processing, can solve the problems such as the bending of the circular chain cannot reach the specified deflection, the low yield point of the circular chain, the insufficient tensile load, etc., to ensure the plasticity and toughness, the electrical conductivity Good performance and the effect of improving production efficiency

Inactive Publication Date: 2011-10-05
SHANDONG LIANGDA FASING ROUND LINK CHAINS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1) The tensile load of the circular link chain is insufficient after heat treatment, and it is only stretched to the predetermined size but not to the predetermined tonnage
[0008] 2) The bending of the circular link chain does not reach the specified deflection, and the weld will crack, especially the link with a higher breaking load, which is more prone to this phenomenon
The yield point of the circular link chain is too low, so the fatigue life is also low

Method used

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  • Method for producing round-link chain
  • Method for producing round-link chain
  • Method for producing round-link chain

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with specific embodiments.

[0022] Raw material selection: high-quality alloy steel 23MnNiMoCr54;

[0023] Cutting:

[0024] The Q45-125A precision bar shearing machine produced by Shenyang Qiushi Precision Shearing Machine Factory adopts the principle of constrained (ie axial shearing and radial) shearing, with high shearing accuracy, end face inclination ≤ 20, and weight error ≤±0.5%, the cutting cost is low, about 1 / 3 of the band saw cutting, the production efficiency is high, about 20 times that of the band saw cutting, the equipment uses wind power, which is a material-saving and energy-saving equipment. Shear force 1250KN.

[0025] Cutting requirements: can test station, no burr chamfering, bar length error within ± 0.5mm.

[0026] Hot chaining:

[0027] The equipment adopts WEN500 type heating equipment and KBA40 type chain knitting equipment produced by Germany Mayer MYR company. The he...

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Abstract

The invention discloses a method for producing a round-link chain, which comprises the following steps: A1) raw material selecting: adopting high-quality alloy steel 23MnNiMoCr54; A2) baiting, wherein baiting demands are as follows: being capable of standing, being free from burr and chamfer, and keeping a length error of a bar stock being plus / minus 0.5mm; A3) hotly chaining: bending the bar stock into a chain in a given size under the action of hydraulic power of a chaining machine; A4) ball blast: removing an oxide skin from the surface, preparing for the next process and ensuring the welding quality; A5) welding and removing the burs; A6) heat treatment; A7) stretching and calibrating: once stretching under a stretching load being 80% of a fracture load; and A8) checking, pairing, painting and placing the chain into a storage. By using the method, the efficiency of producing the round-link chain is increased and the cost is lowered. The fracture load, a coefficient of elongation under a test load, a fracture elongation coefficient and a fatigue life of the round-link chain all meet the national standard.

Description

technical field [0001] The invention relates to a production method of a circular link chain, which belongs to the technical field of mechanical processing. Background technique [0002] When the distance between the links of the circular link chain exceeds the specified value, the links will rest on the tops of the teeth, and the phenomenon of chain skipping and tooth beating will easily occur. If the pitch is too small, it will be difficult for the round link chain to take off the teeth, which will aggravate the wear and generate additional impact load. When the outer width of the ring chain exceeds the specified value, the chain ring cannot bite into the chain pocket and rides on the waist of the sprocket teeth, causing chain skipping and tooth beating, which will aggravate wear and reduce transmission efficiency. Conversely, if the inner width of the chain link is too small, it will be difficult to rotate between the chain links. When the double-chain conveyor adopts l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 宋宁宁尹训录
Owner SHANDONG LIANGDA FASING ROUND LINK CHAINS
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