CN1040627A

CN1040627A - Self-lubricating iron-base wear-resistant alloy

Info

Publication number: CN1040627A
Application number: CN 88106158
Authority: CN
Inventors: 夏先斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-17
Filing date: 1988-08-17
Publication date: 1990-03-21
Also published as: CN1015184B

Abstract

Self-lubricating iron-base wear-resistant alloy, be mainly used in parts such as making axle bush and axle sleeve, be widely used in automobile, gasoline, diesel machine, textile manufacturing machine, food machinery etc. to replace bronze ZQSn6-6-3, it is a matrix with hard metallic iron, soft metal and nonmetal lead, copper, carbon are that solid lubricant and other auxiliary material are formed, and adopt powder metallurgical technique to make parts such as axle bush and axle sleeve.Long 6～10 times of its service life as compared ZQSn6-6-3, cost only is 1/5～1/7.

Description

Self-lubricating iron-base wear-resistant alloy

The invention belongs to a kind of wear resistant alloy material, be mainly used in parts such as making axle bush and axle sleeve.

Up to now, parts such as axle bush, axle sleeve are still based on bronze material, cause its very quick-wearing and scrapping but bronze part holds impact that can't stand big impact load, particularly moment, and the price of bronze are very expensive.Disclose a kind of Zi-Al-Co-Mn alloy for bearing in the CN85105072 application for a patent for invention prospectus, but it still exists weak point in work-ing life, the shortcoming that cost is high.In addition, with axle bush, the axle sleeve that above-mentioned materials is made, in the course of the work all must be oily, this bothers the opposing party to be unfavorable for using in the occasion of avoiding oily occasion (on weaving, food machinery) and can't refuel on the one hand.

The object of the present invention is to provide a kind of long service life, low cost of manufacture, without the self-lubricating abrasion-proof material of apply oil, replace bronze and make parts such as axle bush, axle sleeve in the working process.

The objective of the invention is by being matrix with hard metallic iron, soft metal and nonmetal lead, copper, carbon are that the ferrous alloy that solid lubricant and other auxiliary material are formed reaches, and its per-cent of forming weight is:

Lead powder 15～30%(or lead alloy)

Copper powder 1～8%

Phosphorus powder 0.01～0.05%(or nickel 1～1.5%)

Graphite Powder 99 0.8～2%

Stearic acid zinc powder 0～1%

20 ^#Machine oil 0.02～0.04%(or stator oil)

The iron powder surplus

Selecting lead content is that 15～30% principle is: content is less than 15% o'clock wear resistance decrease, greater than 30% o'clock part machinery strength degradation.

The selection principle of copper is: content descends less than 1% o'clock thermal conductivity and is unfavorable for heat radiation, and content rises greater than 8% o'clock manufacturing cost.

Phosphorus is lower than nickel price, generally selects phosphorus for use, and its content is not enough less than 0.01% o'clock part strength, greater than 0.05% o'clock meeting embrittlement, brittle point occurs on the surface of part.

The selection principle of Graphite Powder 99 is: content was less than 0.8% o'clock wear resistance decrease, and content was greater than 2% o'clock strength degradation.

Zinic stearas is a pore-forming material, just adds when need increasing oil length but generally is no more than 1%, causes waste otherwise will increase press pressure during moulding, can not add in the time of need not increasing oil length.

Machine oil plays a part to make the weight material to mix, and content was difficult to mix less than 0.02% o'clock, and content can become top, mobile poor greater than 0.04% o'clock, also was unfavorable for mixing.

The weight percent of best proportioning of the present invention is:

Lead powder 19～21%

Copper powder 1.5～2.5%

Phosphorus powder 0.01～0.03%

Graphite Powder 99 0.08～1.2%

Stearic acid zinc powder 0.03～0.05%

20 ^#Machine oil 0.02～0.04%

The iron powder surplus

Iron-base wear-resistant alloy of the present invention adopts the powder metallurgy working method to make parts such as axle bush, axle sleeve, its technological process: batch mixing-moulding-sintering-cooling-removing oxide layer-finishing-side cut chamfering-fill lubricating oil-test package to dispatch from the factory.

Raw material sources of the present invention are abundant, and cheap, working life prolongs significantly, and has self-lubricating property, compares with bronze ZQSn6-6-3 commonly used, and working life can reach 6～10 times, and cost only is 1/5～1/7 of ZQSn6-6-3.

Embodiment one:

Lead powder 15%

Copper powder 1%

Phosphorus powder 0.01%

Graphite Powder 99 0.8%

Stearic acid zinc powder 0

20 ^#Machine oil 0.02%

The iron powder surplus

Axle bush, axle sleeve with this prescription is made can be used for working under the low speed lower velocity condition, such as textile manufacturing machine.

Embodiment two:

Lead powder 30%

Copper powder 8%

Phosphorus powder 0.05%

Graphite Powder 99 2%

Stearic acid zinc powder 1%

20 ^#Machine oil 0.04%

The iron powder surplus

Axle bush, axle sleeve with this prescription is made can be used for working under the high-speed and high-intensity condition, such as the high-power starting engine.

Embodiment three:

Lead powder 20%

Copper powder 2%

Phosphorus powder 0.02%

Graphite Powder 99 1%

Stearic acid zinc powder 0.04%

20 ^#Machine oil 0.03%

The iron powder surplus

The premium properties that has high low speed, high low strength dual-purpose with axle bush, the axle sleeve of this prescription manufacturing.

Claims

Self-lubricating iron-base wear-resistant alloy is characterized in that its composition weight percent:

Lead powder 15～30%; Or lead alloy powder;

Copper powder 1～8%;

Phosphorus 0.01～0.05%; Or nickel powder 1～1.5%;

Graphite Powder 99 0.8～2%;

Stearic acid zinc powder 0～1%;

20 ^#Machine oil 0.02～0.04%; Or stator oil;

The iron powder surplus.