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Method of molding and manufacturing cam by using Se-Sb-Zn-Mn series aluminum alloy as material through powder metallurgy

A technology of se-sb-zn-mn and powder metallurgy, which is applied in the powder metallurgy forming and manufacturing of cams, aluminum alloys and their cams, can solve the problems of affecting the service life of tools, destroying the accuracy of cams, and low production efficiency. Effects of service life, elimination of work hardening, and improvement of productivity

Inactive Publication Date: 2016-04-27
WUXI QIAOYANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is more complicated, the production cycle is long, the production efficiency is low, and the production cost is relatively high
Cams made of other materials are only suitable for specific environments due to some disadvantages
Generally, when the tooth top and dedendum of a mechanically processed cam enter and disengage, there are two pairs of teeth in contact at the same time, but only one pair of teeth meshes when the middle part meshes, so it is reflected in the radial pressure while applying the same radial pressure. The cutting force in the middle area is much higher than that in other areas, and it is almost impossible to form elastic deformation in this area, resulting in more cutting layers and a concave tooth shape, which will cause a lot of noise during the transmission of the cam and damage the Cam accuracy, which also affects tool life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] A cam made of Se-Sb-Zn-Mn series aluminum alloy is designed, and the percentage content of the materials used is: Mg1.3%, Sb1.12%, Ti0.56%, Se0.1%, Mn1.1%, Cu<0.02%, S<0.02%, P<0.25%, and the rest are aluminum and its impurities. The processing technology used is: (1) powder metallurgy for blank forming, and mechanical pulverization to obtain powder, that is, crushing The method is to crush the block metal into powder, and then pretreat the powder. Firstly, the powder is annealed at 250°C, and then the powder raw material is classified. The air classification method is to mix all kinds of powders uniformly to make the state uniform during pressing and sintering. Finally, the small particle powder is made into pellets, and then the obtained powder is pressed by a closed cold-pressed steel mold forming method, and finally The pressed cam blank is sintered, the sintering temperature is 1200°C, the sintering time is 0.5h, and it is sintered in vacuum. Slowly cool in the fu...

Embodiment 2

[0009] A cam made of Se-Sb-Zn-Mn series aluminum alloy is designed, and the percentage content of the materials used is: Mg2.7%, Sb1.51%, Ti0.89%, Se0.2%, Mn1.7%, Cu<0.02%, S<0.02%, P<0.25%, and the rest are aluminum and its impurities. The processing technology used is: (1) powder metallurgy for blank forming, and mechanical pulverization to obtain powder, that is, crushing The method is to crush the block metal into powder, and then pretreat the powder. First, the powder is annealed at a temperature of 290°C, and then the powder raw material is classified. The air classification method is to mix all kinds of powders uniformly to make the state uniform during pressing and sintering. Finally, the small particle powder is made into pellets, and then the obtained powder is pressed by a closed cold-pressed steel mold forming method, and finally The pressed cam blank is sintered, the sintering temperature is 1300°C, the sintering time is 1.5h, and the sintering is carried out in v...

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Abstract

The invention discloses a method of molding and manufacturing a cam by using Se-Sb-Zn-Mn series aluminum alloy as a material through powder metallurgy, and belongs to the technical field of powder metallurgy. The cam molding and manufacturing method comprises the following manufacturing procedures: carrying out blank molding through powder metallurgy, annealing, carrying out tempering treatment, machining, chemically treating the surface of the cam, and carrying out preservative treatment and polishing treatment, wherein the powder metallurgy process comprises the steps of annealing, screening, mixing and granulating, not only can improve the compressibility of powder and but also enables all components to be uniformly mixed, thereby improving the flowability and stability of the powder; the annealing and tempering treatment on the cam remove internal stress and refine structure grains; the cam is machined by milling; and a green pollution-free cutting fluid is introduced in a machining process, so that the environmental pollution is avoided, and the bodies of workers are free of pollution. The manufacturing method has the beneficial effects that the abrasion resistance of the cam is improved; and the corrosion of the cam is retarded by carrying out electroplating preservative treatment and polishing treatment on the cam in the end, thereby prolonging the service life of the cam and meanwhile improving the surface hardness, bending strength and heart toughness of the cam.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy, and the invention relates to an aluminum alloy and a cam thereof, in particular to a powder metallurgy forming manufacturing method of a cam made of Se-Sb-Zn-Mn series aluminum alloy. Background technique [0002] There are many kinds of traditional cam manufacturing materials, including steel, cast iron, etc., and some high-polymer non-metallic elements, etc. Generally, gold element and alloy material cams are the most, but gold element and alloy material cams are made by cutting. That is, machining is carried out on a cam forming machine tool (such as a gear shaping machine, a gear hobbing machine, etc.), and the processing steps are roughly blanking—heat treatment—turning out a gear blank on a lathe—forming the cam on a special machine—surface heat treatment. But this manufacturing method process is more, and production time is long. The process is more complicated, the production c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/08C22C21/00B23P15/14
Inventor 沈秋
Owner WUXI QIAOYANG MACHINERY MFG
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