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Manufacturing process of round pipe steel of chain

A manufacturing process and round pipe technology, applied in the manufacturing process of chain round steel pipes, can solve the problems of low surface friction, deformation and burrs, and high cost, and achieve the effects of improving comprehensive mechanical properties, reducing deformation resistance, and enhancing lubrication effect

Inactive Publication Date: 2013-01-23
ZHEJIANG ANJI LUYAO METAL PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The chain is one of the most important parts of mechanical transmission. In China, medium carbon steel is mainly used after quenching and tempering treatment, but its comprehensive mechanical properties are not enough to meet the requirements of strength, wear resistance and mechanical properties such as variable speed bicycle and motorcycle chains. It is used in special occasions with high precision requirements
The Chinese patent with the publication number CN1810442A (publication date: 2006-08-02) adopts the chain plates prepared by modulation treatment, and the rollers and sleeves prepared by carburizing treatment. Although the requirements for surface strength and wear resistance are solved, the production process It is complicated and the cost is high. In addition, because the precision in the carburizing process is difficult to control, the use precision of the produced chain is also difficult to control. In addition, the surface friction after carburizing is low and the surface smoothness is not enough, which will make the chain in use. During the process, due to the influence of friction and temperature, deformation and burrs will occur, which will affect the use effect of the chain
Finally, the environment in which the chain is used is complex. If it does not have certain corrosion resistance, it is easy to rust and lead to a decrease in the comprehensive mechanical properties of the chain. At present, there are also chains made of stainless steel, but the chains made of stainless steel not only have mechanical properties that cannot meet special occasions. use and cost

Method used

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  • Manufacturing process of round pipe steel of chain
  • Manufacturing process of round pipe steel of chain
  • Manufacturing process of round pipe steel of chain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The first step is to put the strip with a raw material thickness of about 6.00mm and a width of about 6.00mm into the H 2 SO 4 Rust removal treatment is carried out in the solution to remove the rust on the surface to ensure the quality requirements in the rolling process, and the treatment time is 5 minutes. The second step is to carry out the four-rolling cold rolling process. After the first rolling, the thickness of the strip is about 2.40mm and the width is about 10.90mm. After the second rolling, the thickness of the strip is about 1.45mm and the width is about 11.35mm. After the third rolling, the thickness of the strip is about 1.12mm and the width is about 11.50mm. After the fourth rolling, the thickness of the strip is about 0.95mm and the width is about 11.66mm. rolling oil. The third step is to anneal the strip after rolling. Before the annealing treatment, put the strip into the annealing furnace, and then gradually increase the furnace temperature to 670...

Embodiment 2

[0033] Same as Example 1, the difference is that the thickness of the raw material strip is about 8.00mm, and the width is about 8.00mm; the thickness of the strip after the first rolling during the four continuous rolling is about 5.12mm, and the width is about 11.70mm After the second rolling, the thickness of the strip is about 2.21mm, and the width is about 12.22mm. After the third rolling, the thickness of the strip is about 1.50mm, and the width is about 12.52mm. After the fourth rolling, the thickness of the strip is It is about 0.96mm and the width is about 12.66mm.

Embodiment 3

[0035]Same as Example 1, the difference is that the thickness of the raw material strip is about 10.00mm, and the width is about 10.00mm; the cold rolling process is five continuous rolling, and the thickness of the strip after the first rolling of the five continuous rolling is about It is 2.80mm and the width is about 13.50mm. After the second rolling, the strip thickness is about 2.00mm and the width is about 14.10mm. After the third rolling, the strip thickness is about 1.50mm and the width is about 14.20. After the fourth rolling, the thickness of the strip is about 1.21 mm, and the width is about 14.55 mm. After the fifth rolling, the thickness of the strip is about 1.00 mm, and the width is about 14.65 mm.

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Abstract

The invention relates to a manufacturing process of steel of a chain, in particular to a manufacturing process of round pipe steel of a chain, belonging to the processing industry of steels. The manufacturing process of the round pipe steel of the chain comprises orderly processing a belt material by the following steps in sequence: de-rusting, rolling, annealing, acid cleaning, phosphating, washing with clear water, saponifying, flattening and coiling to form round pipe, wherein the rolling is four continuous rolling or five continuous rolling; the annealing is divided into three steps: the first step is heating insulating treatment, wherein the rolled belt material is fed into an annealing furnace to be heated, nitrogen is fed in the annealing furnace when the annealing furnace is heated to 450-500 DEG C, the temperature is kept for 5-7 hours after the heating temperature reaches 670-700 DEG C; the second step is furnace cooling, and the belt material treated by the heating insulating treatment is cooled to be 300-400 DEG C in the annealing furnace. The manufacturing process of the round pipe steel of the chain is simple in process and low in cost; the manufactured steel plate for the round pipe of the chain is high in strength, corrosion resistant and high in precision.

Description

technical field [0001] The invention relates to a manufacturing process of steel for chains, in particular to a manufacturing process of round steel pipes for chains, which belongs to the steel processing industry. [0002] Background technique [0003] The chain is one of the most important parts of mechanical transmission. In China, medium carbon steel is mainly used after quenching and tempering treatment, but its comprehensive mechanical properties are not enough to meet the requirements of strength, wear resistance and It is used in special occasions with high requirements for precision. The Chinese patent with the publication number CN1810442A (publication date: 2006-08-02) adopts the chain plates prepared by modulation treatment, and the rollers and sleeves prepared by carburizing treatment. Although the requirements for surface strength and wear resistance are solved, the production process It is complicated and the cost is high. In addition, because the precision ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21B1/28C21D9/52C21D1/26C23C22/07
Inventor 卫忠方
Owner ZHEJIANG ANJI LUYAO METAL PRODS
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