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Method for preparing spindle bolster of spinning machine

A spinning machine and spindle foot technology, applied in the field of spindle foot preparation, can solve the problems of low strength, high processing cost of steel spindle foot, low tensile strength, etc., and achieve the effects of low processing cost, saving raw materials and excellent performance

Inactive Publication Date: 2012-04-18
缪建良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ingot feet made of cast iron have the following defects during processing and use: (1) The tensile strength of cast iron is lower than that of steel, and fractures often occur during use due to loose material structure, low strength, and improper operation; (2) Cast iron There are sand holes and air holes in the spindle feet, which cause the spindle to leak oil and fail, and burn out the bearing; (3) The dust in the casting process is not environmentally friendly
The above-mentioned defects can be solved by using steel to make the ingot foot. However, due to the difficulty in processing the deep hole (blind hole) of the steel ingot foot, foreign countries use easy-cutting steel to produce steel ingot feet. Due to the lack of easy-cutting steel in China, only bars can be used to pass through. The production of steel ingot feet by turning and milling results in high processing costs of steel ingot feet, a lot of waste (about 50% of waste is generated), low production efficiency, and difficult quality assurance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method for a spindle foot of a spinning machine spindle, comprising the following steps:

[0018] 1) Powder proportioning and mixing: the raw material powders used are composed of: -200 mesh electrolytic copper powder 0.8%, -200 mesh electrolytic nickel powder 0.8%, -200 mesh electrolytic chromium powder 1.5%, -120 mesh 0.6% of graphite powder, 0.3% of -200 mesh electrolytic manganese powder, and the balance is -200 mesh of reduced iron powder; add an appropriate amount of pressing lubricant to the above powder, and then put it into a mixer and mix for 5 hours to prepare a mixed powder;

[0019] 2) Compression: Press the mixed powder prepared in step 1) in a molding die to form an ingot foot compact on a hydraulic press, and the pressing pressure is 550 MPa;

[0020] 3) Sintering: Sinter the ingot foot compact obtained in step 2) in a sintering furnace, and the sintering atmosphere is H 2 , the sintering temperature is 1150°C, and the sintering time is 4...

Embodiment 2

[0023] A preparation method for a spindle foot of a spinning machine spindle, comprising the following steps:

[0024] 1) Powder proportioning and mixing: The raw material powders used are composed of: -200 mesh electrolytic copper powder 1.2%, -200 mesh electrolytic nickel powder 0.2%, -200 mesh electrolytic chromium powder 2.2%, -120 mesh 0.4% of graphite powder, 0.8% of -200 mesh electrolytic manganese powder, and the balance is -200 mesh of reduced iron powder; add an appropriate amount of pressing lubricant to the above powder, and then put it into a mixer and mix for 3 hours to prepare a mixed powder;

[0025] 2) Pressing: press the mixed powder prepared in step 1) in a molding die on a hydraulic press to form an ingot foot compact, and the pressing pressure is 600MPa;

[0026] 3) Sintering: Sinter the ingot foot compact obtained in step 2) in a sintering furnace, the sintering atmosphere is H2, the sintering temperature is 1165°C, and the sintering time is 3.5 hours; ...

Embodiment 3

[0029] A preparation method for a spindle foot of a spinning machine spindle, comprising the following steps:

[0030] 1) Powder proportioning and mixing: The raw material powders used are composed of: -200 mesh electrolytic copper powder 1.0%, -200 mesh electrolytic nickel powder 0.6%, -200 mesh electrolytic chromium powder 1.8%, -120 mesh 0.5% of graphite powder, 0.5% of -200 mesh electrolytic manganese powder, and the balance is -200 mesh of reduced iron powder; add an appropriate amount of pressing lubricant to the above powder, and then put it into a mixer and mix for 4 hours to prepare a mixed powder;

[0031] 2) Pressing: press the mixed powder prepared in step 1) in a molding die on a hydraulic press to form an ingot foot compact, and the pressing pressure is 580 MPa;

[0032] 3) Sintering: Sinter the ingot foot compact obtained in step 2) in a sintering furnace, and the sintering atmosphere is H 2 , the sintering temperature is 1160°C, and the sintering time is 3.5 ...

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PUM

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Abstract

The invention discloses a method for preparing a spindle bolster of a spinning machine. The method comprises the following steps of: 1) mixing powder according to a proportion, namely putting a designed powder mixture into a mixer, and mixing for 3 to 5 hours to obtain mixed powder; 2) pressing, pressing the mixed powder obtained in the step 1) in a forming mold on a hydraulic machine to obtain a bolster pressed blank at the pressing pressure of between 550 and 600MPa; 3) sintering, namely sintering the bolster pressed blank obtained in the step 2) in a sintering furnace in the existence of H2 at the temperature of between 1,150 and 1,165 DEG C for 3.5 to 4 hours; and 4) penetrating, namely putting the sintered bolster into machine oil at the temperature of between 70 and 90 DEG C, and soaking for 20 to 30 minutes.

Description

technical field [0001] The invention relates to the field of textile machinery, in particular to a method for preparing a spindle foot of a spinning machine spindle. Background technique [0002] At present, most of the ingot feet are formed by iron casting, and only a small part are formed by steel. Ingot feet made of cast iron have the following defects during processing and use: (1) The tensile strength of cast iron is lower than that of steel, and fractures often occur during use due to loose material structure, low strength, and improper operation; (2) Cast iron There are sand holes and air holes in the spindle feet, which cause the spindle to leak oil and fail, and burn out the bearing; (3) The dust in the casting process is not environmentally friendly. The above-mentioned defects can be solved by using steel to make the ingot foot. However, due to the difficulty in processing the deep hole (blind hole) of the steel ingot foot, foreign countries use easy-cutting stee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B22F3/26B22F5/00D01H7/12
Inventor 缪建良
Owner 缪建良
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