Process method of seamless sintering bimetallic lining

A processing method, bimetal technology, applied to bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of bushing accuracy maintenance and support capacity discount, and achieve the effect of improving comprehensive performance and service life

Inactive Publication Date: 2011-01-26
陈友贵
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Problems solved by technology

[0004] In order to overcome the defect that a seam will inevitably appear in the process of producing bimetallic bushings by the current sintering method, which greatly reduces the precision maintenance and supporting capacity of the bushings, the present invention proposes a seamless sintered bimetallic bushing processing method

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  • Process method of seamless sintering bimetallic lining

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Embodiment Construction

[0026] Below in conjunction with specific embodiment the present invention is described in detail as follows:

[0027] The processing method of the seamless sintered bimetal bushing. Its main steps are:

[0028] 1. First, decontaminate and deoxidize the surface of the steel plate, including shot blasting and degreasing;

[0029] Two, the preparation of alloy copper powder; the preparation weight ratio of alloy copper powder is; Copper 80, tin 5, zinc 6 and lead 3; Also add the phosphorus of 2.5, the magnesium of 2.5, the silicon of 2.5 and the molybdenum of 2.5.

[0030] 3. Sintering. Evenly spread alloy copper powder with a thickness of one-fifth of the thickness of the steel plate on the surface of the steel plate, then heat at a high temperature with oxygen barrier, and sinter at a temperature of 800°C for 60 minutes to melt the metal parts other than copper and form the alloy powder into a paste. After cooling, the alloy powder is firmly sintered on the steel plate;

[...

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Abstract

The invention discloses a process method of a seamless sintering bimetallic lining, mainly comprising the following steps: 1 performing contamination and oxidation layer removing treatment on the surface of a steel plate; 2 preparing copper alloy powder; 3 sintering; 4 performing precision rolling on the sintered bimetallic material, pressing the material into a round shape, and carrying out welding forming, wherein the process comprises rolling, crimping, mouth milling, groove welding and shape reforming; 5 performing the de-stressing and shaping through heat treatment; and 6 manufacturing the seamless sintering bimetallic lining through the rough machining and finish machining. The seamless sintering bimetallic lining has the following technical advantages: 1 the hardness of the copper alloy layer of the bimetallic lining is higher, and the friction coefficient is reduced, thereby greatly enhancing the combination properties and the service life of the lining; 2 the seamless sintering bimetallic lining has no shape limitation in the manufacture process; 3 the seamless sintering bimetallic lining has no size limitation, and is suitable for being used in various loads and severe environment; and 4 the method of the invention has the significant characteristic of seamless sintering, thereby solving the problem that the seam exists in the process of sintering the bimetallic material, greatly enhancing the accuracy, the stability and the bearing capacity of the lining.

Description

technical field [0001] The invention relates to metal processing, namely a processing method for a seamless sintered bimetal bushing. Background technique [0002] Bushings, i.e. sliding bearings. Most of them are made of expensive wear-resistant alloy materials or a single wear-resistant material. It is also made of bimetallic materials. There are two types of existing bimetallic bushing manufacturing methods: [0003] The first category: casting category. The wear-resistant alloy is cast on the inner wall of the seamless steel pipe to make a full-circle bushing. Although this guarantees the mechanical properties and strength of the parts, its production process is quite complicated, with high cost and high energy consumption, and it is only suitable for the processing of small-sized bushings, but it cannot do anything for large or even super-large sliding bearings. Contents of the invention [0004] In order to overcome the defect that a seam will inevitably appear i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/14B22F7/04
Inventor 陈友贵
Owner 陈友贵
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