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A kind of metal nylon composite shaft sleeve and its manufacturing method

A composite shaft sleeve and manufacturing method technology, applied in bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of insufficient wear resistance and shock resistance, and achieve the effects of light weight, long service life and low density

Active Publication Date: 2018-01-05
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, due to the long-term influence of traditional concepts, most metallurgical enterprises still use the ZA27 alloy of conventional grades. The wear resistance and shock resistance of this alloy are not good enough, and sometimes it cannot meet the needs of actual industrial production. Therefore, the present invention aims to On the premise of ensuring the strength and rigidity of the shaft sleeve, the wear resistance and shock resistance of the shaft sleeve are improved, and at the same time, the purpose of light weight and cost reduction is achieved to a certain extent

Method used

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  • A kind of metal nylon composite shaft sleeve and its manufacturing method
  • A kind of metal nylon composite shaft sleeve and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A metal nylon composite bushing, the composite bushing is composed of a cast nylon inner layer 2 and a cylindrical zinc alloy outer layer 1, and the thickness of the cast nylon inner layer 2 is the same as that of the zinc alloy The thickness ratio of the outer layer 1 is less than 2:1.

[0022] A method for manufacturing the above-mentioned metal nylon composite shaft sleeve, the material used in the method is ZA27 alloy and nylon active mixture, the equipment used is a horizontal centrifuge, and the inner layer is cast nylon by centrifugal casting technology. The outer layer is a composite bushing made of zinc alloy. The specific process steps are as follows:

[0023] (1) Use ZA27 alloy to cast the zinc alloy outer layer 1, and set three dovetail grooves 3 evenly along its axial direction on the inner wall of the zinc alloy outer layer 1. The depth of the dovetail groove 3 is 1mm, and the two ends of the zinc alloy outer layer 1 are Cast an annular flan...

Embodiment 2

[0027] Embodiment 2: A metal nylon composite bushing, the composite bushing is composed of a cast nylon inner layer 2 and a cylindrical zinc alloy outer layer 1, and the thickness of the cast nylon inner layer 2 is the same as that of the zinc alloy The thickness ratio of the outer layer 1 is less than 2:1.

[0028] A method for manufacturing the above-mentioned metal nylon composite shaft sleeve, the material used in the method is ZA27 alloy and nylon active mixture, the equipment used is a horizontal centrifuge, and the inner layer is cast nylon by centrifugal casting technology. The outer layer is a composite bushing made of zinc alloy. The specific process steps are as follows:

[0029] (1) Use ZA27 alloy to cast the zinc alloy outer layer 1, and set three dovetail grooves 3 evenly along its axial direction on the inner wall of the zinc alloy outer layer 1. The depth of the dovetail groove 3 is 2 mm. The two ends of the zinc alloy outer layer 1 are respectively Cast an an...

Embodiment 3

[0033] Embodiment 3: A metal nylon composite bushing, the composite bushing is composed of a cast nylon inner layer 2 and a cylindrical zinc alloy outer layer 1, and the thickness of the cast nylon inner layer 2 is the same as that of the zinc alloy The thickness ratio of the outer layer 1 is less than 2:1.

[0034] A method for manufacturing the above-mentioned metal nylon composite shaft sleeve, the material used in the method is ZA27 alloy and nylon active mixture, the equipment used is a horizontal centrifuge, and the inner layer is cast nylon by centrifugal casting technology. The outer layer is a composite bushing made of zinc alloy. The specific process steps are as follows:

[0035] (1) Use ZA27 alloy to cast the zinc alloy outer layer 1, and set three dovetail grooves 3 evenly along its axial direction on the inner wall of the zinc alloy outer layer 1. The depth of the dovetail groove 3 is 1mm, and the two ends of the zinc alloy outer layer 1 are Cast an annular flan...

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Abstract

The invention provides a metal-nylon composite spindle sleeve which is formed by compounding an inner monomer cast nylon layer and a cylindrical outer zinc alloy layer. According to a manufacturing method for the metal-nylon composite spindle sleeve, the outer zinc alloy layer is used as a casting die for monomer cast nylon, a nylon active mixture is cast into the rotary preheated die by using a centrifugal casting method, and melt undergoes polymerization and molding on the inner wall of the outer zinc alloy layer under the action of centrifugal force. The method provided by the invention can improve the shock resistance of the spindle sleeve, reduces cost and improves wear resistance of the spindle sleeve while good strength and rigidity of the spindle sleeve are guaranteed; and since the monomer cast nylon has the characteristics of small density, light weight, capacity of bearing load for a long time, etc., the composite spindle sleeve prepared in the invention has the advantages of lightweight, long service life, low production cost, etc. compared with a zinc alloy spindle sleeve.

Description

technical field [0001] The invention belongs to the field of shaft sleeve manufacturing technology, and in particular relates to a metal nylon composite shaft sleeve and a manufacturing method thereof. Background technique [0002] Friction and wear consume 30% to 40% of the world's energy consumption. As a natural phenomenon in the process of object movement, friction is an old problem faced by human beings in the process of understanding and transforming nature. For this reason, the research on anti-friction and wear-resistant materials is very necessary and an inevitable development direction. [0003] Cast zinc-aluminum alloy has excellent wear-reducing and wear-resisting properties, mechanical properties and remarkable economy, and can replace copper alloy as wear-resistant material and bronze as low, medium-speed, medium-temperature and heavy-duty bearings. Therefore, although zinc-aluminum alloys have not been around for a long time, the development of related scient...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/20B29B11/06F16C33/04
CPCB29B11/06B29C41/20F16C33/04
Inventor 王爱琴刘帅洋田捍卫梁婷婷郭惠丹马窦琴谢敬佩李继文王文焱李洛利
Owner HENAN UNIV OF SCI & TECH