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Powder metallurgy bolster and production technology thereof

A powder metallurgy and production process technology, applied in textiles and papermaking, etc., can solve the problems of low strength, low tensile strength, failure, etc., and achieve the effect of saving raw materials, low processing cost, and less waste.

Inactive Publication Date: 2010-02-03
重庆市江北区利峰工业制造有限公司
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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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  • Powder metallurgy bolster and production technology thereof
  • Powder metallurgy bolster and production technology thereof
  • Powder metallurgy bolster and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1. Ingredients

[0030] 1.5% (weight) copper powder, 0.4% (weight) graphite powder, 0.7% (weight) zinc stearate, 0.8% (weight) manganese sulfide, 0.5% (weight) phosphorus iron (P-Fe) powder , and the rest is reduced iron powder for mixing and preparing materials. Iron powder is made by mixing iron powders of different particle sizes. The weight ratio between -100 mesh iron powder, -200 mesh iron powder and -325 mesh iron powder is: 45%, 30% and 25%; the particle size of copper powder -400 mesh; the particle size of graphite powder is -450 mesh.

[0031] Step 2. Compacting

[0032] Use a powder metallurgy press (model HPP-600S) and a mold to press the mixture obtained in step 1 into a compact with a pressure of 160 tons. After the compact is formed, the density of the compact is 6.7g / cm 3 . .

[0033] Step three, sintering

[0034] Place the ingot foot compact in a seven-stage sintering furnace for sintering, and sinter at a high temperature of 1140°C for 3 ho...

Embodiment 2

[0044] Step 1. Ingredients

[0045] 3.0% (weight) copper powder, 0.4% (weight) graphite powder, 0.5% (weight) zinc stearate, 0.3% (weight) manganese sulfide, 1.0% (weight) phosphorus iron powder, and the rest are reduced iron powder for mixing. Iron powder is made by mixing iron powders of different particle sizes. The weight ratio between -100 mesh iron powder, -200 mesh iron powder and -325 mesh iron powder is: 50%, 30% and 20%; the particle size of copper powder -500 mesh; the particle size of graphite powder is -500 mesh.

[0046] Step 2. Compacting

[0047] Use a powder metallurgy press (model HPP-600S) and a mold to divide the oil storage pipe 1 into an upper section 1-1 and a lower section 1-2 to compact respectively, and the flange 2 is arranged on the upper section 1-1, and then the formed The upper section 1-1 compact and the lower section 1-2 compact are welded together to obtain the ingot foot compact. After the compact is formed, the compact density is 7.5g / cm ...

Embodiment 3

[0050] Step 1. Ingredients

[0051] 2.0% (weight) copper powder, 0.4% (weight) graphite powder, 1.0% (weight) zinc stearate, 0.5% (weight) manganese sulfide, 0.5% (weight) phosphorus iron powder, and the rest are reduced iron powder for mixing. Iron powder is made by mixing iron powders of different particle sizes. The weight ratio between -100 mesh iron powder, -200 mesh iron powder and -325 mesh iron powder is: 45%, 30% and 25%; the particle size of copper powder -400 mesh; the particle size of graphite powder is -450 mesh. All the other steps are the same as in Example 1.

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Abstract

The invention discloses a powder metallurgy bolster which is made of iron-based powder metallurgy materials, wherein the weight percentage of the components of iron-based powder compounds is as follows: 1.5%-3.0% of copper powder, 0.4%-0.6% of graphite powder, 0.7%-1.2% of zinc stearate, 0.3%-0.8% of manganese sulfide, 0.5%-1.0% of ferrophosphorus powder, and the balance of iron powder. Compared with a bolster made of cast iron materials, the powder metallurgy bolster has the advantages of no oil leakage, environmental protection, energy saving and abrasion resistance; and compared with a bolster made of steel materials, the powder metallurgy bolster has the advantages of low processing cost, few generated waste materials, raw material saving and low noise. In addition, the invention alsodiscloses a production technology of the powder metallurgy bolster.

Description

technical field [0001] The invention relates to an ingot foot for textile machinery, in particular to an ingot foot made by powder metallurgy and a production process for the powder metallurgy ingot foot. Background technique [0002] see Figure 1 to Figure 3 The spindle foot of the spinning machine spindle includes an oil storage pipe 1 with a closed lower end, and a flange 2 is provided near the upper end of the oil storage pipe 1. The outer peripheral surface of the flange 2 consists of two parallel planes and two concentric arc surfaces. It is connected to each other, and an axial through groove 2-1 is provided on one of the arc surfaces, and a positioning lock 2-2 is arranged in the groove 2-1, and a positioning lock 2-2 is provided on the positioning lock 2-2. Radial screw holes 2-2a; positioning grooves 2-3 are symmetrically arranged on the two planes of the flange 2, and the notches of the positioning grooves 2-3 extend to the end face of the flange 2; The outer wa...

Claims

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Application Information

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IPC IPC(8): D01H7/12B22F1/00B22F3/16B22F3/24C22C38/16
Inventor 张国民周朔民
Owner 重庆市江北区利峰工业制造有限公司
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