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A powder metallurgy preparation method for a machine tool slider

A machine tool slider and powder metallurgy technology, which is applied in the field of casting, can solve the problems that the product density molding machine and mold loss are greatly affected, affect the manufacturing cost, and are difficult to detect, so as to improve wear resistance, change the combination form and Pore ​​shape, effect of solving cracks

Active Publication Date: 2015-11-11
HAIAN YINGQIU POWDER METALLURGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material composition affects the manufacturing cost, the product density has a great influence on the loss of the molding machine and the mold, and the crack is mainly affected by the strength of the compact, and it is difficult to detect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a machine tool slider powder metallurgy, which comprises the following steps:

[0024] (1) Ingredients: The machine tool slider is made of the following raw materials in weight percentage:

[0025] 0.8% graphite, 0.4% silicon carbide powder, 0.6% manganese, 0.4% nickel, 0.4% cerium, 0.4% titanium, 0.6% aluminum, 2% zinc, 8% copper, 2% modified sexual aids, the rest is iron;

[0026] Described modification auxiliary agent is to be made from the raw material of following weight part:

[0027] Nano iron powder 100, calcium hydroxide 30-40, stearic acid 40, dicumyl peroxide 8, polyethylene vinyl acetate 10, sorbitan monooleate 4, fatty alcohol polyoxyethylene ether 3, Liquid paraffin 3-4, 1,2-bis(triethoxysilyl)ethane 0.8, water amount;

[0028] The preparation method of described modification auxiliary agent comprises the following steps:

[0029] A. Add the above-mentioned calcium hydroxide in parts by weight to water of equal mass, stir and hea...

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PUM

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Abstract

The invention discloses a preparation method of a machine tool slider by powder metallurgy. The method includes that the machine tool slider is made of, by weight percentage, 0.6-0.8% of graphite, 0.2-0.4% of silicon carbide powder, 0.4-0.6% of manganese, 0.2-0.4% of nickle, 0.2-0.4% of cerium, 0.2-0.4% of titanium, 0.4-0.6% of aluminum, 1-2% of zinc, 5-8% of copper, 1-2% of performance additive and the rest iron. By the added performance additive, superfine powder is provided in mixed raw materials and can fill gaps among large particles, so that apparent density of a mixture is improved; the superfine powder is mainly composed of nanoscale iron powder and calcium stearate, and the novel performance additive is obtained through auxiliaries like silane coupling agent, so that various physical characteristics like abrasive resistance of the machine tool slider is further improved; and polyethylene vinyl acetate and liquid paraffin serving as lubricant are added into the performance additive, so that effects, in mixing and pressing, of the performance additive are enhanced, compacting strength of a powder metallurgy structural member is substantially improved under same pressing pressure, particle combining forms and pore shapes of the raw materials are changed, and generation of cracks is avoided fundamentally.

Description

technical field [0001] The invention mainly relates to a powder metallurgy preparation method of a slide block of a machine tool, which belongs to the field of casting. Background technique [0002] With the continuous development of my country's economy, powder metallurgy structures are used more and more widely. As a near net shape technology, powder metallurgy has great economic advantages in the production of structural parts and other parts with large batches, high dimensional accuracy and high processing costs. However, there is a weakness in powder metallurgy structural parts: the compact strength of the product before sintering is very low, which leads to cracks easily appearing during the forming and handling process, and cannot be detected during the manufacturing process. This is a fatal defect in some applications such as key parts of automobiles, which leads to the application of powder metallurgy structural parts only to low- and medium-risk stress-bearing par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/16B22F1/00
Inventor 吴建平
Owner HAIAN YINGQIU POWDER METALLURGY CO LTD
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