JPS58153746A - Dry sintered friction material - Google Patents

Abstract

PURPOSE:To enhance the friction coefficient of the friction material and to improve its aggresive tendency to a facing member and its judder, by letting a bronze sintered alloy material have composition comprising the specified amounts of Cu, Sn, metal oxide composed of hard particles, graphite, MoS2, Pb, CaF2 and Mn. CONSTITUTION:The dry sintered friction material is made of a bronze sintered alloy having the composition of, by wt%, 60-80 Cu, 3-20 Sn, 3-20 metal oxide composed of hard particles, 3-10 graphite, 1-5 MoS2, 8> Pb, >10 CaF2 and >10 Mn. As said metal oxide, hard particles, e.g. alumina, silica or mullite, having Mohs' hardness above 4 are used.

Description

[Detailed Description of the Invention] The present invention relates to a bronze-based dry sintered friction material that can stably reduce the number of grains on the load and improve its aggressiveness against mating materials. Delir.

Takumai's dry sintered friction materials are required to have a high cross-border coefficient and 1 town 2 white seizure resistance, and to be resistant to thermal noade phenomena and water fade phenomena that appear as a decrease in friction and +774 numbers. There is.

However, in the past, when all of the above requirements were met, there was little development in terms of composition. 1. To fulfill this request, my brother Akira has made a 22-year effort to create a dry sintered 1ψ material consisting of a bronze bond, in which the soul lees are , by weight, copper 00-80%
, 3-20% of tin, 3-20% of normal X oxidation consisting of hard particles
Arrogance, graphite 3-10, serifene disulfide 1-5, lead 8
The present invention provides a dry-fired material containing less than 18% of calcium fluoride, less than 10% of calcium fluoride, and less than 15% of manganese.

1 Below, the concept of the sintered rubbing material of the present invention will be explained.

+Invented dry method and raw material for Ayu M) As a part, I use Bronzeta's sintered base metal A.

The composition of the whole sintered friction material is 1.3-1. '60-80%, tin 3-2
A range of 0% is selected. The selection criteria for this range is 4
This is due to the stability of the friction. In particular, the matrix material of bronze thread has a high material strength, which stabilizes the friction coefficient during braking. , this hard oxide film has excellent resistance to the water fade phenomenon (f). Also, C has excellent resistance to the thermal fade phenomenon (f), and is stable and the friction is reduced. .

Furthermore, with the bow O7 of the present invention,
Aluminum Two (At2o3), Noriki (Ui02), Mufito (3At203・2SiO2) Temple's f+7! The metal-acclimated proboscis consisting of melon particles extends to 3-204 days-t+σ. The selection criteria for this city exemption are QJ, ¥ load, and the ability to withstand high temperature and rapid removal. Therefore, the aggressiveness against Aibu Tezai, teLcL, te, -4
- The weight is determined within the range of 3-20 degrees. This JIb stand, these guys are C! 1 Reaction material Q-1, the coefficient of friction is high, and it scrapes off the debris and reaction products that stop at the edge of its thickness.・And, if you have a small amount of space, this effect will be strong, and if you hit 4 times, you will be able to attack your opponent with great effort, so it is best to be in the range of 1.3 to 20φ. The death has come together and the 9th century has passed! j! River: &, 1, 4 with moss 1f degree with diamond count 10
The above are preferred.

Mafc, dry waste live sheep scooping material of the present invention (tma, graphite; 3
~10, divalent f-hymolybdenum (mu4082) i
H-15%, lead (Pb) l (%)? and non-calcium (CaF2) I O% Fk
Agency 48 is set. This 7L et al. selection group $, i1-isu4
] We have improved attack 11 to /1 and also tII! This is because of the protection of the number of thick edges in the state.

In other words, these component molecules, graphite, M
In the order of O82 and CaF2, if it exceeds the convergence absorber, 1≠1$1 thread count) 41j is cut once. 0alQ has a Xa effect with +1ViS+-Suki + Bone 1, and from 4 points, the attack on the opponent is 19 Yukin Kaikichi (It is also known that there is a 19-year attack on the opponent). 1, the addition and removal of this lead alloy (f, -:, where j
Although the friction coefficient of ψ is lower by 1 person, on the other hand, there is an improvement in the strength of 11v and an improvement in wear resistance of 11-.

1, 7 Morigatoshi, uninvented 1, formula Shi child connection $m what system oJ1
Its 1φ thread count is relatively low, about 0.4~05, and it has resistance to heat/need fading, and improves aggressiveness and squealing against phase +44. It is something that has been done.

At least 15% of mangano is added to the bezel in 4 (dry sintering of the invention). Cooling of mannonone completely reduces the oxide film of the mannonone during 1Nb sintering, resulting in sintering 1'+
This is because it has the effect of irritating 1, and also because some of the manga / become F1, Mn + l, and the effective one month of production that stabilizes the face is stable.

For this reason, the dry sintering of the present invention) 4 rubs 4.41
・The material is made of a material with a relatively high coefficient of friction, and the heat exchanger is
1-- Improved resistance to de and water fade phenomena, and improved aggressiveness and cries against tego.
, h "C".

Next, Ichiten IA in +y et al.
uv/1jV6 will be explained.

As trial number I, 6. A comparison of dry sintering of disbelief and cries 17 pieces of wood sheep 1 and (')-bin rice.'' The things related to ゎra l Tono Drunk ν1+C are A~・D
A little seaweed, ttE rice' 1. Comparison (8 times 1, 1v) is E-u, -t71 is shown in the following table /
It has 1 minute #LbZ (unit weight %) like J\.

Iji, -1=5 [: A-G fixed value 2)% p:
H=Shin bit 1 King Nohi I. The - circle indicates two test pieces pressed against each other by FC-20 for about 10 minutes. Conditions 6: i, layer speed 20 m/θθC1 counterpressure 5~ .

This) result, A-D of this book, Izut [mo 04~
() Comparatively, the 5th axis circle is 1, 7i, shouldering the number of honorable years, and the other party, temporary 4, not doing political affairs, and 1l
It was also excellent in terms of heat resistance and L7J. 1, the level of noise was not noticeable, and the purpose of the present invention was achieved.

7JL, [Next E is the opponent &? Does not attack, but
Heat resistance 7 aid properties and inferior result care F! 7.P'' has heat resistance and fade resistance -C & 7i-, but it greatly attacks the opponent's board. Sara V and G have excellent side heat fade properties, but they attacked the opponent & Shii To.

In addition, in the dry sintering method of the present invention, the effects of 0aF2 and Mn nitration are remarkable, and in the case of the nitrate tested in the valley, the IL was less than 10% and more than 15%, respectively. I have also given up on what is appropriate. This "easy q, C
If a1j'2 exceeds 10%, there is a tendency for the amount of sand to increase by about 1, - and Mn). Each of these was eliminated because it would make workability worse.

In addition, a separate test was conducted on metal oxides, and it was found that the IC was good for those with a Mohs hardness of 4 or higher, and that it was also applicable to metal oxides of mullite.

heather) Shi4C1, I-1-theory, Tsukishin, Niyo vCl
The following 75 young fruits can be served by adding phosphorus from the bronze thread, a certain composition of ingredients, and adding all the ingredients to the mankan.

11) A stable I#+lA coefficient metal dry firing process should be provided. The present invention has a comparatively simple harmonic 1-series frequency of 04 to 0.5, and also has excellent tune/j thermal fade characteristics. This means that stable friction (1) can be maintained even in Q-speed cleaning, and it can be said to be particularly suitable for automobiles.

(2) Provided is a genus of the Qianbukyo-karihinidae that has a phase +4νIICxJ-J retractability and a sound that has been improved. In general, as the number of pachyderms increases, the ability to attack quickly becomes a problem, and along with this, the aggressiveness of attacking the opponent also increases.

However, [7, in the present invention, Pama, Hayataru, 1 rare number is 1-) Also, listen, Zono no v 粍搦: 4'-% suppressed xt. Once the so-called 11 improved from aggressiveness
This also leads to a decrease in traffic.

(J () Water 7'' - C also changed for Ito Genjaku - Hemorrhoids are dry ceremony ψ, dry 1r memorial service sword is offered. In Motoo Akira,
Due to the fact that it is based on a matrix of 19 threads and the mankan full-width 5-force D Lfr-, it is resistant to water fading and has an exposed knee ring. , VC are preferred. In this case, if all stainless steel is used for the mating plate, the problem of rust will be solved at the same time.

Claims (1)

[Scope of Claims] (2) In a dry sintered friction material made of a bronze-based sintered alloy, the sintered alloy contains 60 to 80% copper and 3 to 2% tin by weight.
0%, metal oxide consisting of hard particles 3-20%, graphite 3
~10%, molybdenum disulfide 1-5%, lead 8% or less, 7
) A dry sintered friction material characterized by 10% or less of calcium oxide and 15% or less of manganese; (2) The metal oxide is characterized by having a hardness of 4 or more on the Mohs hardness scale. Claim 1
Some dry sintered friction materials.