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Valve plate matrix raw material component for cycloid hydraulic motor and copper infiltration process thereof

A motor valve plate and substrate technology, which is applied in the field of raw material components of a cycloidal hydraulic motor valve plate substrate and its copper infiltration production process, can solve the problems of high requirements on mechanical properties, high rejection rate, and reduced air tightness of parts, etc. Improve the density and mechanical properties, the effect of stable product quality and performance

Inactive Publication Date: 2011-07-20
陕西华夏粉末冶金有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the product is complex, the mechanical performance is high, the use environment is high hydraulic pressure, the parts need to be airtightly sealed, and the density must be greater than 7.3g / cm 3
The traditional airtight sealing treatment of powder metallurgy parts mainly adopts steam bluing treatment, the sealing layer of the process is thin, the sealing effect is low, and the overall airtightness of the parts is further reduced in subsequent processing, resulting in unstable product quality and high scrap rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] In this embodiment, the powder metallurgy cycloidal hydraulic motor valve plate matrix raw material components are:

[0014] Accounting for 90.4% of the total weight -100 mesh atomized iron powder, 7.5% -300 mesh copper powder, 0.35% -250 mesh Ni powder, 0.7% -300 mesh Mo powder, 0.4% -325 mesh carbon powder , 0.6% -325 mesh zinc stearate, 0.05% No. 20 industrial motor oil.

[0015] The production technique of the present embodiment is realized like this, comprises the following steps:

[0016] (1), will account for 90.4% of the total weight of -100 mesh atomized iron powder, 7.5% of -300 mesh copper powder, 0.35% of -250 mesh Ni powder, 0.7% of -300 mesh Mo powder, 0.4% of - 325 order carbon powder, 0.6% -325 order zinc stearate, 0.05% No. 20 industrial machine oil, mix;

[0017] (2) In the "Y" type mixing tank, add 230Kg of the mixed powder in the proportion described in step (1), stir and mix for 2 hours, after the mixing is completed, pass through a -80 mesh scree...

Embodiment 2

[0022] In this embodiment, the powder metallurgy cycloidal hydraulic motor valve plate matrix raw material components are:

[0023] Accounting for 88.79% of the total weight -100 mesh atomized iron powder, 8.5% -300 mesh copper powder, 0.55% -250 mesh Ni powder, 0.85% -300 mesh Mo powder, 0.65% -325 mesh carbon powder , 0.6% -325 mesh zinc stearate, 0.06% No. 20 industrial motor oil.

[0024] The production technique of the present embodiment is realized like this, comprises the following steps:

[0025] (1), will account for 88.79% of the total weight of -100 mesh atomized iron powder, 8.5% of -300 mesh copper powder, 0.55% of -250 mesh Ni powder, 0.85% of -300 mesh Mo powder, 0.65% of - 325 order carbon powder, 0.6% -325 order zinc stearate, 0.06% No. 20 industrial machine oil, mix;

[0026] (2) In the "Y" type mixing tank, add 250Kg of the mixed powder in the proportion described in step (1), and stir and mix for 2.5 hours. The single weight of the blank is 880 grams, wh...

Embodiment 3

[0031] In this embodiment, the powder metallurgy cycloidal hydraulic motor valve plate matrix raw material components are:

[0032] Accounting for 87.32% of the total weight -100 mesh atomized iron powder, 9.5% -300 mesh copper powder, 0.75% -250 mesh Ni powder, 1.0% -300 mesh Mo powder, 0.75% -325 mesh carbon powder , 0.6% -325 mesh zinc stearate and 0.08% No. 20 industrial motor oil.

[0033] The production technique of the present embodiment is realized like this, comprises the following steps:

[0034] (1), will account for 87.32% of the total weight of -100 mesh atomized iron powder, 9.5% of -300 mesh copper powder, 0.75% of -250 mesh Ni powder, 1.0% of -300 mesh Mo powder, 0.75% of - 325 order carbon powders, 0.6%-325 order zinc stearate and No. 20 industrial machine oil of 0.08%, batching according to the above ratio;

[0035] (2) In the "Y" type mixing tank, add 290Kg of the mixed powder in the proportion described in step (1), and stir and mix for 3 hours. After the...

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Abstract

The present invention relates to a valve plate matrix raw material component for a cycloid hydraulic motor and a copper infiltration process thereof. The valve plate matrix raw material component comprises the following components by the weight percent: 87.3-90.4 of atomized Fe powder of -100 meshes, 7.5-9.5 of Cu powder of -300 meshes, 0.35-0.7 of Ni powder of -250 meshes, 0.7-1.0 of Mo powder of -300 meshes, 0.4-0.8 of carbon powder of -325 meshes, 0.6 of zinc stearate of -325 meshes and 0.05-0.08 of No.20 industrial oil which are sufficiently mixed. Through pressing and molding, the obtained mixture is infiltered and sintered with a copper infiltration agent blank. An obtained product has high density, uniform air-tightness sealing holes and excellent mechanical performance and is suitable for batch production.

Description

technical field [0001] The invention relates to a powder metallurgy production process technology, in particular to the raw material components of a cycloidal hydraulic motor valve plate base body and its copper infiltration production process. Background technique [0002] Cycloidal hydraulic motors are widely used in construction machinery, injection molding machines, petroleum and coal machinery, fishery machinery and agricultural machinery and other fields. The cycloid hydraulic motor valve plate is the heart part of the cycloid hydraulic motor. The shape of the product is complex, the mechanical performance is high, the use environment is high hydraulic pressure, the parts need to be airtightly sealed, and the density must be greater than 7.3g / cm 3 . The traditional airtight sealing treatment of powder metallurgy parts mainly adopts steam bluing treatment, the sealing layer of the process is thin, the sealing effect is low, and the overall airtightness of the parts is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/00H02K15/12B22F3/16
Inventor 林育阳翟丕奇左鹏军贠月婷杨聪斌
Owner 陕西华夏粉末冶金有限责任公司
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