Novel manufacturing method of maintenance-free chain

A manufacturing method and maintenance-free technology, which is applied in the field of chain manufacturing, can solve problems such as unsatisfactory customer use, and achieve the effects of enhancing hardness, improving fatigue performance, improving rust resistance and wear resistance

Active Publication Date: 2013-04-03
HANGZHOU DONGHUA CHAIN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the chains produced by the above process can no

Method used

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  • Novel manufacturing method of maintenance-free chain
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Embodiment 1

[0013] Embodiment 1: In the manufacturing method of the new maintenance-free chain in this embodiment, the chain plates and rollers constituting the chain are respectively processed according to the following process steps: (1) forming; (2) heat treatment; (3) polishing; (4) Surface treatment (such as blackening, flange, nickel plating, etc.), the pin shaft that constitutes the chain is processed according to the following process steps: (1) forming; (2) heat treatment; (3) polishing; (4) hard chrome plating on the surface ; Process the sleeve that constitutes the chain according to the following process steps: select atomization powder making→powder batching→warm pressing forming→high temperature sintering→heat treatment→sand blasting treatment→steam treatment→vacuum heating oil immersion, and assemble the above components, The powder ingredients are prepared according to the ratio of nickel powder 3%, molybdenum powder 1%, carbon powder 0.3%, and iron powder 95.7%, and the po...

Embodiment 2

[0018] Embodiment 2: In the manufacturing method of the new maintenance-free chain in this embodiment, the chain plates and pin shafts constituting the chain are respectively processed according to the following process steps: (1) forming; (2) heat treatment; (3) polishing; (4) Surface treatment (such as blackening, flange, nickel plating, etc.), the pin shaft that constitutes the chain is processed according to the following process steps: (1) forming; (2) heat treatment; (3) polishing; (4) hard chrome plating on the surface ; Process the sleeve that constitutes the chain according to the following process steps: select atomization powder making→powder batching→warm pressing forming→high temperature sintering→heat treatment→sand blasting treatment→steam treatment→vacuum heating oil immersion, and assemble the above components, The powder ingredients are prepared according to the ratio of nickel powder 5%, molybdenum powder 5%, carbon powder 0.6%, and iron powder 89.4%, and the...

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Abstract

The invention discloses a novel manufacturing method of a maintenance free-chain. Sand blasting treatment and steam treatment are added in the technical steps of a sleeve; meanwhile, the sleeve is heated during vacuum impregnation; and through the sand blasting treatment, the surface of the sleeve is more hardened, and the fatigue property of the sleeve is improved. A plurality of fine pits exist in the surface of the sand-blasted sleeve, so that more oil storage spaces can be provided. The steam treatment is a surface process capable of forming a compact oxidation film layer on the surface and holes of the sleeve, so that the rust resistance and the wear resistance of the sleeve are improved. Through the heating during the vacuum impregnation, lubricating oil can be preferably injected into a powder metallurgical part. In addition, the novel manufacturing method has the advantages as follows: powder materials for the sleeves are improved; the original copper powder is replaced with a raw material molybdenum powder; and first, the molybdenum powder can be used for enhancing the hardness of the metallurgical part; besides, the metallurgical part can be used for increasing the oil content of the chain.

Description

technical field [0001] The present invention relates to a method for manufacturing a chain, in particular to producing chain accessories such as sleeves. Background technique [0002] At present, in the processing technology of ordinary maintenance-free chains, the chain plates, pin shafts, rollers, and sleeves that constitute the chain are basically processed according to the following process steps: (1) forming; (2) heat treatment; (3) polishing ; (4) Surface treatment; assemble the above-mentioned components. The above-mentioned process is relatively simple, and the technology is relatively old. The chain can only operate normally when it is in a lubricated state, and the maintenance cost is extremely high. The Chinese invention patent with the application number 01113155.1 discloses a chain manufacturing method. By improving the formula and process, the chain is more wear-resistant than ordinary roller chains, does not require frequent maintenance, and prolongs the serv...

Claims

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Application Information

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IPC IPC(8): B22F1/00C22C38/12B22F3/16B22F3/26C21D7/06C23C8/32C23C8/10C23F17/00
Inventor 叶斌魏一波王丽丽邵慧敏卢继光宣碧华
Owner HANGZHOU DONGHUA CHAIN GRP
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