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A powder metallurgy plunger pump blank and its preparation method

A technology of powder metallurgy and plunger pump, which is applied in the field of powder metallurgy, can solve the problems of low processing efficiency, high cost, and low blank precision, and achieve the effects of improving work efficiency, high performance indicators, and long service life

Active Publication Date: 2015-09-02
胜利油田鸿兴科贸有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The precision of the blank cast in this way is low, and the parts need to go through multiple processes such as turning, broaching, milling, and grinding before they can be precisely machined. The machining efficiency is low and the cost is extremely high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] specific implementation plan

[0017] The present invention will be described in detail below through specific examples.

[0018] A powder metallurgy plunger pump blank, made of the following raw materials in parts by weight (kg): iron powder 90, copper powder 2, Mg 6.3, Zr4.3, Mn 2.2, additive 2;

[0019] The auxiliary agent is made of the following raw materials in parts by weight (kg): iron powder 30, bamboo charcoal 3, citric acid 2, nano-titanium dioxide 1, silane coupling agent KH550 1, ferric oxide 3, potassium dihydrogen phosphate 1 , zinc stearate 2, N220 carbon black 1, methyltrimethoxysilane 1; the preparation method is to mix iron powder, bamboo charcoal, ferric oxide, potassium dihydrogen phosphate, and N220 carbon black, and grind them into 200-300 mesh powder, then add methyltrimethoxysilane and mix evenly, press it into a billet at 10-15MPa, then send it to 920-950°C for calcination for 3-4 hours, after cooling, crush it into 300-400 mesh powder, and ot...

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PUM

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Abstract

The invention discloses a powder metallurgical plunger pump blank which is characterized by being manufactured by the following materials by weight: 90-92 parts of iron powder, 2-3 parts of copper powder, 6.3-7.4 parts of Mg, 4.3-4.5 parts of Zr, 2.2-3.0 parts of Mn and 2-3 parts of auxiliaries. By utilizing the powder metallurgy technology to manufacture the plunger pump blank, the size of the plunger pump blank is accurate, workload is greatly reduced, and work efficiency is improved. By adopting a special raw material ratio, the produced plunger pump blank is high in performance index, good in stability, unlikely to break, long in service life and wide in application range.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder metallurgy plunger pump blank and a preparation method thereof. Background technique [0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working chamber to realize oil absorption and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment, and is widely used in high pressure, large flow and flow adjustment occasions, such as hydraulic presses, engineering machinery and ships. Cast iron is used as the material of the blank in the existing manufacturing method of the blank of the cylinder body of the plunger pump. The precision of the blank cast in this way is low, and the parts need to go through multiple processes such as turning, broaching, milling, and grindi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F3/16
Inventor 胡光荣
Owner 胜利油田鸿兴科贸有限责任公司