Powder metallurgy passenger car chain pulley and method for producing the same

A technology of powder metallurgy and sprockets, which is applied in the direction of belts/chains/gears, mechanical equipment, portable lifting devices, etc., can solve the problems of affecting the service life of car sprockets, affecting service life, and high production costs, and achieves easy installation and overall Good performance and light specific gravity

Inactive Publication Date: 2009-10-07
吕元之
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the sprocket for cars produced by machining technology are that it has a large specificity, and the assembly with the shaft is not firm and unstable, and the production cost is high and the wear resistance is poor, which affects the service life.
Judging from the current car sprocket, there is no oil throwing structure on the body of the sprocket, so it also affects the service life of the car sprocket

Method used

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  • Powder metallurgy passenger car chain pulley and method for producing the same
  • Powder metallurgy passenger car chain pulley and method for producing the same
  • Powder metallurgy passenger car chain pulley and method for producing the same

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Embodiment 1

[0032] According to attached figure 1 , 2 , 3, 4, 5 produce powder metallurgy car sprockets, the production steps are as follows:

[0033] (1) Selection of ingredients and raw materials:

[0034] The sprocket body and teeth are made of powder metallurgy raw materials, and the weight percentage ratio of each raw material is: copper powder accounts for 3%, nickel powder accounts for 2%, graphite powder accounts for 0.6%, molybdenum powder accounts for 1.5%, iron powder accounts for 92.9%; The oil ring 7 is made of GCr15 steel; the sealing ring 8 is made of high-quality carbon steel sheet;

[0035] (2) Powder mixing:

[0036] The copper powder, nickel powder, graphite powder, molybdenum powder, and iron powder weighed according to the above weight ratio are mixed evenly with a double-cone mixer. Powder;

[0037] (3) Repression:

[0038] The powder metallurgical mixed powder for pressing the gear body and teeth is put into the die according to the sprocket style of the car a...

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Abstract

The invention discloses a powder metallurgy cab chain wheel and a preparation method, which is composed of a chain wheel body (1), teeth (2), characterized in that, the chain wheel body (1) arranges a locking D-shape shaft hole (4) at the center of the ring boss (3), a central circular shaft hole (6) is arranged at the center of the ring boss (3') of the other side, a flinger (7) is arranged on the outside of the perinium of the ring boss (3, 3'), and the surface is welded with a sealing ring (8). The preparation method is to adopt the powder metallurgy materials for once sintering into an integer. The powder metallurgy cab chain wheel of the preparation method has the advantages of abrasion proof, corrosion resistant, good integrity, also has easy installment, fixation, light proportion, high precision, easy mass production, moreover the device has excellent lubricating property, especially for the chain wheel of the cab.

Description

technical field [0001] The invention relates to a car sprocket and a preparation method thereof, in particular to a powder metallurgy car sprocket and a preparation method thereof. Background technique [0002] Because powder metallurgy sintered products have the advantages of corrosion resistance, wear resistance, high precision, high strength, low production cost, easy mass production, and good integrity, they are widely used. However, due to the particularity of the powder metallurgy product process, the matrix has many gaps, and cracks are prone to occur during quenching, especially at the root of the tooth, so processing is difficult. However, after searching, the sprockets currently used in cars are still steel machined products, and there is no report of using powder metallurgy to prepare sprockets for cars. Its structure is composed of sprocket body, teeth and shaft holes, and the shaft holes are round. Shape, the sprocket body is a whole piece. The shortcomings of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/30F16H55/06B22F5/08
Inventor 吕元之张应波吴兆花吴荣昌童民
Owner 吕元之
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