Powder metallurgy hydraulic motor stator

A motor stator and powder metallurgy technology, which is applied in the field of mechanical parts manufacturing, can solve the problems of long production cycle of parts, high product processing cost, high equipment, space and labor, and achieve the effect of improving hardness and wear resistance.

Inactive Publication Date: 2011-02-02
SUZHOU NETABHAPE COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cycle of parts is long, the utilization rate of materials is very low, and the equipment, site and labor required for the same output are relatively high, so the product processing cost is relatively high, and the production capacity is limited by many factors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A powder metallurgy hydraulic motor stator of the present invention.

[0020] It is made of 95.5% iron, 3% copper, 0.6% carbon and 0.9% molding agent as the material for manufacturing powder metallurgy hydraulic motor stator, and then used to manufacture powder metallurgy hydraulic motor stator.

Embodiment 2

[0022] It is made of 97.1% iron, 1% copper, 0.9% carbon and 1% molding agent as the material for manufacturing powder metallurgy hydraulic motor stator, and then used to manufacture powder metallurgy hydraulic motor stator.

Embodiment 3

[0024] The specific process steps of manufacturing powder metallurgy hydraulic motor stator are as follows:

[0025] 1) Compression forming: through the powder metallurgy forming process, the iron powder is dry-pressed once, and the blank is formed into the final shape of the hydraulic motor stator;

[0026] 2) Sintering: Under the condition that the ambient temperature of the sintering furnace is 1120°C, the powder metallurgy sintering process is used to sinter the above-mentioned blanks for 30 minutes, so that the parts meet the required mechanical properties;

[0027] 3) Finishing: Secondary cold extrusion and sintering of blanks through high-precision powder metallurgy finishing molds to obtain sufficiently high dimensional accuracy, after this process, the internal special-shaped holes can meet the final use requirements;

[0028] 4) Steam treatment: Put the above-mentioned blank into a closed steam treatment furnace, pass in water vapor, and treat it for 5-8 hours in the...

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PUM

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Abstract

The invention discloses a powder metallurgy hydraulic motor stator, which is used for manufacturing hydraulic motors with 3,000PSI pressure rating. A powder metallurgy material comprises the following components in percentage by weight: 93.1 to 98.2 percent of iron, 1 to 5 percent of copper, 0.3 to 0.9 percent of carbon and 0.5 to 1 percent of forming agent. The manufacturing process of the powder metallurgy hydraulic motor stator comprises the following steps of: 1) pressing and forming; 2) sintering; 3) sizing; 4) steam processing; and 5) milling two end faces by using a flat stone mill. The manufacturing process has the advantages of forming complicated shapes, greatly reducing the cutting amount and improving hardness, wear-resisting property and size precision of products and thus improving working efficiency of motors, along with standard high-pressure resistance, sealing performance and mechanical property. Besides, as the processing amount is greatly reduced and the processing procedure is shortened, the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of mechanical parts manufacturing, in particular to a powder metallurgy hydraulic motor stator. Background technique [0002] The current manufacturing method of the stator of the hydraulic motor is to use cast iron as the raw material of the stator of the hydraulic motor, which is manufactured through multiple mechanical processes. The production cycle of parts is long, the utilization rate of materials is very low, and the equipment, site and labor required for the same output are relatively high, so the product processing cost is relatively high, and the production capacity is limited by many factors. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a powder metallurgy hydraulic motor stator, which uses powder metallurgy technology to replace the traditional technology to process and manufacture the hydraulic motor stator,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16B22F5/00F03B3/16B22F3/16
CPCY02E10/223Y02E10/20Y02P70/50
Inventor 周安平
Owner SUZHOU NETABHAPE COMPOSITE MATERIALS
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