High-antifriction iron-based sulfide powder metallurgy oil-containing bearing material as well as preparation method and application thereof

A vulcanized powder and bearing material technology, applied in bearings, bearing components, shafts and bearings, etc., can solve the problems of high production cost, reduced service life of sliding bearings and shafts, friction coefficient sliding bearings and shaft wear and burns, etc., to achieve Effect of reducing the coefficient of friction and improving the anti-friction effect

Active Publication Date: 2020-04-14
合肥波林新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Excavator is a kind of construction engineering equipment. Sliding bearing is a kind of part used to connect the rotating or linear sliding parts. The traditional sliding bearing usually adopts the bearing made of cast alloy or embeds the graphite column point. The bearings on the sliding surface have low material utilization rate, large amount of machining, low production efficiency, and high production cost. During the operation, they are only lubricated by the lubricating grease stored in the oil tank, and they need to be added frequently. Once the lubrication state deteriorates and fails When the friction coefficient increases, it will cause serious wear and burns between the sliding bearing and the shaft, reduce the service life of the sliding bearing and the shaft, and increase the cost of use.

Method used

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  • High-antifriction iron-based sulfide powder metallurgy oil-containing bearing material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Take 18.0% copper, 0.60% carbon, 0.8% tungsten, 0.6% chromium, 0.8% molybdenum, 0.8% nickel, 0.8% vanadium by weight, and the balance is iron Fe, and use a double cone mixer to mix , mixed evenly and pressed to obtain a pressed density of 6.6g / cm 3 The disc sample; then place it at a temperature of 1110°C for sintering for 40 minutes to prepare a sintered material;

[0024] (2) Sulfur coating: the sulfur is dispersed into powder by sieving, and the sulfur powder is weighed and evenly sprayed on the surface of the sintered material to obtain the coated material; the amount of sulfur accounts for about 0.08% by weight of the sintered material;

[0025] (3) Vulcanization process: In a nitrogen atmosphere, place the coating material at a temperature of 120°C and keep it warm for 120 minutes. Since this temperature is higher than the melting point of sulfur, the sulfur is in a molten state and can enter the pores of the sintered material and enter the sintered material. ...

Embodiment 2

[0027] (1) Take 20.0% copper, 0.75% carbon, 1.6% tungsten, 1.2% chromium, 1.6% molybdenum, 1.6% nickel, 1.6% vanadium by weight, and the balance is iron Fe, and mix with a double cone mixer , mixed evenly and pressed to obtain a pressed density of 6.3g / cm 3 The disc sample; then place it at a temperature of 1120°C for sintering for 40 minutes to prepare a sintered material;

[0028] (2) Sulfur coating: the sulfur is dispersed into powder by sieving, and the sulfur powder is weighed and evenly sprayed on the surface of the sintered material to obtain the coating material; the amount of sulfur accounts for about 0.60% of the weight of the sintered material;

[0029] (3) Vulcanization process: In a nitrogen atmosphere, place the coating material at a temperature of 140°C and keep it warm for 60 minutes. Since this temperature is higher than the melting point of sulfur, the sulfur is in a molten state and can enter the pores of the sintered material and enter the sintered material...

Embodiment 3

[0031] (1) Take 20.0% copper, 0.9% carbon, 2.0% tungsten, 1.8% chromium, 2.6% molybdenum, 3% nickel, 1.8% vanadium by weight, and the balance is iron Fe, and use a double cone mixer to mix , mixed evenly and pressed to obtain a pressed density of 6g / cm 3 The disc sample; then place it at a temperature of 1110°C for sintering for 40 minutes to prepare a sintered material;

[0032] (2) Sulfur coating: the sulfur is dispersed into powder by sieving, and the sulfur powder is weighed and evenly sprayed on the surface of the sintered material to obtain the coating material; the amount of sulfur accounts for about 0.80% of the weight of the sintered material;

[0033] (3) Vulcanization process: In a nitrogen atmosphere, place the coating material at a temperature of 150°C and keep it warm for 30 minutes. Since this temperature is higher than the melting point of sulfur, the sulfur is in a molten state and can enter the pores of the sintered material and enter the sintered material. ...

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Abstract

The invention discloses a high-antifriction iron-based sulfide powder metallurgy oil-containing bearing material as well as a preparation method and application thereof. The material is prepared fromthe following components in percentage by weight: 18.0%-22.0% of copper, 0.60%-1.1% of carbon, 0.8%-2.6% of tungsten, 0.6%-2.2% of chromium, 0.8%-2.8% of molybdenum, 0.8%-3.2% of nickel, 0.8%-2.2% ofvanadium, 0.08%-1.2% of sulfur and the balance iron, and Cu2S is distributed in pores of a microstructure of the material. Due to the existence of pores in the sintered material, in the vulcanizationprocess, sulfur coated on the surface of the sintered material is heated to be in a molten state, enters the communicated pores of the sintered material, reacts with Cu in a sintered material matrix and generates Cu2S. Cu2S is an antifriction component, so that the antifriction effect of the material can be improved, and the friction coefficient is reduced, and the high-antifriction iron-based sulfide powder metallurgy oil-containing bearing material is obtained.

Description

technical field [0001] The invention belongs to the technical field of metal material powder metallurgy, and in particular relates to a high-friction-reducing iron-based sulfide powder metallurgy oil-impregnated bearing material and its preparation method and application. Background technique [0002] Excavator is a kind of construction engineering equipment. Sliding bearing is a kind of part used to connect the rotating or linear sliding parts. The traditional sliding bearing usually adopts the bearing made of cast alloy or embeds the graphite column point. The bearings on the sliding surface have low material utilization rate, large amount of machining, low production efficiency, and high production cost. During the operation, they are only lubricated by the lubricating grease stored in the oil tank, and they need to be added frequently. Once the lubrication state deteriorates and fails When the friction coefficient increases, it will cause serious wear and burns between t...

Claims

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Application Information

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IPC IPC(8): B22F5/10B22F3/24C22C38/42C22C38/44C22C38/46F16C33/12
CPCB22F5/10B22F3/24C22C38/42C22C38/44C22C38/46C22C38/002F16C33/121B22F2003/242F16C2204/64F16C2204/66
Inventor 张东汤浩张俊杰程卫李其龙徐伟
Owner 合肥波林新材料股份有限公司
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