CN1032195A

CN1032195A - A kind of friction plate and manufacture method thereof

Info

Publication number: CN1032195A
Application number: CN 87106352
Authority: CN
Inventors: 李建国; 黄发军; 吴成义; 郭娟
Original assignee: BEIJING RUBBING MATERIALS FACTORY
Current assignee: BEIJING RUBBING MATERIALS FACTORY
Priority date: 1987-09-19
Filing date: 1987-09-19
Publication date: 1989-04-05

Abstract

A kind of composition is a copper 45～58%, iron 10～24%, tin 0.5～2.0%, molybdenum 2.0～5.0%, manganese 0.6～2.5%, molybdenumdisulphide 1.0～3.0%, graphite 10～12%, silicon-dioxide 5.0～10%, silicon carbide 1.0～3.0%, the friction materials of aluminium sesquioxide 1.0～3.0% (weight percent), classified batch mixing, pressure sintering makes it and the steel backing formation friction plate that is connected as a single entity, mating plate with powder metallurgy iron bimetallic (Chinese patent application number 86108726) or 30CrSiMoVA steel matter, form friction pair, be used for aircraft, tank, boats and ships, winning equipment, the stopper of heavy duty engineering truck.

Description

A kind of friction plate and manufacture method thereof

The invention belongs to friction materials, the suitable especially friction plate of making aircraft, tank, boats and ships, winning equipment, heavily loaded engineering truck with powder metallurgic method sintering stopper.

Known powder metallurgy friction material (United States Patent (USP) 2784105) be with mullite or the hard brittle material that contains mullite as main friction element, its matrix strength is low.For this reason, the powder of this friction materials must be suppressed in strengthening cup (claiming to reinforce cover again) or mould.If pressed compact is to suppress in mould, then need embeds before sintering or behind the sintering and strengthen in the cup.This friction plate of strengthening cup that has in use scratches the friction pair part easily.

The objective of the invention is to the strengthening material matrix, strengthen wear resistance, can not utilize and strengthen cup.

The invention is characterized in consisting of of this friction plate: copper 45～58%, iron 10～24%, tin 0.5～2.0%, molybdenum 2.0～5.0%, manganese 0.6～2.5%, molybdenumdisulphide 1.0～3.0%, graphite 10～12%, silicon-dioxide 5.0～10%, silicon carbide 1.0～3.0%, aluminium sesquioxide 1.0～3.0%(weight percent).

Wherein manganese adds with the ferro-silico-manganese form, and purpose is in order to guarantee silicon and the manganese alloying level to body material.

Key of the present invention is the combination process of powder: at first need by mentioned component powdered copper, iron, molybdenum, tin, ferro-silico-manganese, the molybdenumdisulphide mixer of packing into, the kerosene that adds silicon-dioxide, aluminium sesquioxide, silicon carbide and 0.3～0.5% after pre-alloyed again, continue to mix 2.5～3.5 hours, it is even to add the graphite thorough mixing then.

Each composition that is added should meet the following granularity that provides (order): copper-200, iron-200, tin-200～+ 350, molybdenum-200, ferro-silico-manganese-200, molybdenumdisulphide-120, graphite-28～+ 60, silicon-dioxide-30～+ 100, aluminium sesquioxide-40～+ 80 and-100～+ 140, silicon carbide-60～+ 120.

The present invention recommends to add-100～+ 140 purpose fine powders that account for aluminium sesquioxide total amount 25～35%, and all the other are-40～+ 80 purpose meal.This fine powder can improve matrix hardness, and meal can strengthen the thermostability of friction system as friction modifier.

For friction stability that guarantees friction plate and the intensity that improves material matrix, the present invention is recommended in the silicon-dioxide of interpolation, cerioid quartz sand is carried out the wet ball-milling intensive treatment, eliminate through washing screening then, polygon quartz sand is become the approximate axle shape of waiting.Axle shape quartz sand such as this account for add dioxide-containing silica 20～30%, natural spherical quartz sand accounts for 70～80%; Aluminium sesquioxide, silicon carbide are cerioid.

The powder that mixes according to composition of the present invention and method for mixing, with 4～5t/cm ²Pressure pressed density is reached 4.5～4.8g/cm ³, be bonded on the steel backing, with 25～30kgf/cm ²Pressure, at N ₂, H ₂In the mixed atmosphere, in 970～1000 ℃ of insulations 2～4 hours, with postcooling.

Friction plate according to the inventive method manufacturing, form friction pair with the powder metallurgy iron bimetallic friction pair part of our unit invention (Chinese patent application number 86108726) or the mating plate of 30CrSiMoVA steel, be applicable to the stopper of high capacity or superelevation load.

Embodiment 1

Prescription 1

Composition	Copper	Iron	Tin	Molybdenum	Ferro-silico-manganese	Molybdenumdisulphide	Graphite	Aluminium sesquioxide	Silicon oxide	Silicon carbide
											Content (%)	47	23	1.3	3.0	3.0	1.2	10.5	3.0	6.0	2.0

Prescription 2

Composition	Copper	Iron	Tin	Molybdenum	Ferro-silico-manganese	Molybdenumdisulphide	Graphite	Silicon oxide	Silicon carbide	Aluminium sesquioxide	The palm fibre corundum
												Content (%)	50	20	1.5	3.0	3.0	1.0	10.5	7.0	1.5	1.3	1.2

Prescription 3

Composition	Copper	Iron	Tin	Molybdenum	Ferro-silico-manganese	Molybdenumdisulphide	Graphite	Silicon oxide	Mullite
										Content (%)	60	10.5	0.5	5.0	1.0	1.0	10	9.0	3.0

Embodiment 2

At first powdery copper, iron, tin, molybdenum, ferro-silico-manganese molybdenumdisulphide in above-mentioned three kinds of prescriptions were packed in the mixer pre-alloyed 2 hours, add silicon-dioxide, aluminium sesquioxide, silicon carbide again, if contain brown corundum or mullite, also at this moment add, to add 0.3～0.5% kerosene simultaneously, mixed 3 hours, and added graphite at last and continued again to mix 8 hours.

Three kinds of prescriptions enumerating in the foregoing description 1, friction plate with this mixing procedure manufacturing, form friction pair with the powder metallurgy iron bimetallic friction pair part of our unit invention or the mating plate of 30CrSiMoVA steel respectively, be respectively applied on fig-154m type, 737 types and the DC-9 type civilian aircraft result such as the following table of its bench test drive and simulation wheels-locked testing:

Claims

1, a kind of powder metallurgy copper-base friction plate, main component is copper, iron, tin, silicon-dioxide, aluminium sesquioxide, mullite and graphite, it is characterized in that consisting of of this element: copper 45～58%, iron 10～24%, tin 0.5～2.0%, molybdenum 2.0～5.0%, manganese 0.6～2.5%, molybdenumdisulphide 1.0～3.0%, graphite 10～12%, silicon-dioxide 5.0～10%, silicon carbide 1.0～3.0%, aluminium sesquioxide 1.0～3.0% (weight percent).

2, a kind of manufacture method of friction plate according to claim 1, comprise mixed powder, coldmoulding, pressure sintering, it is characterized in that in mixed powder process, earlier that powdered copper, iron, molybdenum, tin, ferro-silico-manganese, molybdenumdisulphide is pre-alloyed, the kerosene that adds silicon-dioxide, aluminium sesquioxide, silicon carbide and 0.3～0.5% again mixed 2.5～3.5 hours, add graphite at last, powder is mixed.

3, according to the manufacture method of claim 2, it is characterized in that in the aluminium sesquioxide that is added granularity is that-100～+ 140 purposes account for 25～35% ,-40～+ 80 purposes account for 65～75%.

4, according to the manufacture method of claim 2, it is characterized in that in the silicon-dioxide that adds, comprise process wet ball-milling intensive treatment and become approximate parenchymatous quartz sand 20～30%, natural spherical quartz sand 70～80%.