JPS58157930A - Dry sintered friction material - Google Patents

Abstract

PURPOSE:To obtain the titled friction material made of a sintered Cu alloy having a relatively high coefft. of friction and improved attacking action on its opposite material by blending Cu with Sn, Zn, a metallic oxide consisting of hard particles, graphite, MoS2, Pb and Mn in a prescribed weight ratio. CONSTITUTION:This dry sintered friction material is made of a sintered Cu alloy consisting of, by weight, 60-80% Cu, 3-10% Sn, <=15% Zn, a metallic oxide consisting of hard particles such as Al2O3, 3-10% graphite, 1-5% MoS2, <=8% Pb and <=15% Mn. This friction material has a relatively high coefft. of friction such as about 0.4-0.5, resistance to thermal and water fading phenomena, improved attacking action on its opposite material, and improved squeaking resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copper-based dry sintered friction material, in particular
It is a hole-shaped material that not only provides stable ridges, but also improves its aggressiveness against the mating material.

Conventionally, dry sintered friction materials have been claimed to have a high coefficient of friction and high anti-seizure properties, and to be less prone to thermal fade phenomena, water fade phenomena, etc., which appear as a decrease in friction number O.

However, conventional copper-based O sintered friction materials have not yet been able to satisfy all of the requirements, and furthermore, from the viewpoint of component composition, on-sintering is desired.

Non-invention is the 10 that was done to this g1 hope meeting nine friends,
In the dry m* machining material made of copper-based O sintered alloy, the key flaM alloy has a weight ratio of 60 to 80% copper and 3 to 3% tin.
10 arrogant, sub-# & 15- or less, metal oxide consisting of hard particles 3-20, black 16B-10-1 molybdenum disulfide l
Dry sintered friction material containing up to 8 sL lead and up to 15 m/m lead.

The concept t1 of the dry sintered friction material of the present invention will be explained below.
1! I will clarify.

The dry sintered friction material of the present invention uses a sintered alloy consisting of copper, tin and zinc as a matrix component. Its composition is based on the weight ratio (the same applies hereinafter) to the entire sintered friction material, and ranges from 60 to 803 copper - 3 to 1 G - and JJ
l< is doing. The selection criteria for this range is based on stability in the frictional direction. In particular, these matrix materials are related to material strength, stabilize the friction coefficient during braking, and also form a hard copper oxide film due to the heat generated between it and the mating plate, so this hard oxide film is Shows resistance to 7ade agglomerates.

It also has excellent resistance to thermal fading and provides a stable surface. In this case, zinc was added as a substitute for tin, and within the range of not deteriorating the performance.

Furthermore, in the dry sintered abrasive material of unexploded #4, alumina (
izsom), silica (51oz), mullite (
The metal oxide 1113-20 consisting of O acidic particles such as 012810m) is contained. The selection criteria for this content is based on the fact that it can withstand JIl friction motion under heavy load and temperature. Join forces and attack the opponent's materials.
The content is determined within the range of 3 to 20, depending on the nature. In this case, these metal compounds have the effect of scraping off the 541I coefficient and the rosy deposits and anti-T formations that occur in the matrix. If the amount is too small, this effect will be small, and if the amount is too large, the opponent will be violently attacked, so a range of 3 to 20- is suitable. In addition,
The hardness of the metal oxide is preferably 4 or more on the Moss hardness, which is rated as diamond 11G.

In addition, the dry sintered IIK material of the present invention has a graphite of 3 to 10
-1 Molybdenum disulfide (MoElm) has 1-15% and lead (PB) s- or less tt. These generally exhibit lubricity in their respective warm ranges, and act as friction coefficient improvers when exceeding their respective 111f ranges. In this case, a general button as an #ilf# component has a decrease in the force coefficient, but on the other hand, there is an improvement in squealing and wear resistance. Therefore, the yoke-type sintered abrasive material of the present invention has a relatively high filtration coefficient of approximately 0.4 to 0.5, and has improved aggressiveness and squealing against mating materials.

Furthermore, in the dry-planted M polishing material of the present invention, manganese t15fA or less i6 is added to the material. Mankan's 5 Tei Xuu is currently in the process of reducing 1 metal OJ coating and sintering 1
This is because it has a soothing effect. This is also because a part of manganese has an effective effect of stabilizing the paper-milling surface of Mn01.

For this reason, the dry-processing material of the present invention has a comparatively 41% strength. It is a material with a high II coefficient, has high resistance to thermal 7-ade phenomena and water fade phenomena, and has improved attack and resistance to hydraulic partner materials and squeaking.

Next, an example of the dry-fired burnished material produced by Tan Komei will be explained.

The samples were an unexploded dry sintered l1111I material and a conventional comparative material. In other words, the material that is appealing to the present invention is M~D, and the one that is unfavorable to the conventional comparative material VC is A~G, each of which is shown in the next row.

Table on page 6Next, the performance of the above M-G was compared using a fixed series M-g-1. Are these two trial plant flies? (The mating plate fc made of 1!-20 was pressed against it, and the conditions at that time were a sliding speed of 20 n/sea and a -pressure of 5~.

As a result, the A-D of the present invention has a relatively high coefficient of 10,4 to 0.5, and is difficult to attack the opponent's sheet metal and is heat resistant). “It was also excellent in terms of needability.It was also rare that the squeal level was above wi<, which was not bothersome.

Page 7 On the other hand, 1 in the conventional column does not attack the opponent 1 Iit, but has inferior heat fade resistance. It was something to do. Furthermore, although G had excellent heat fade resistance, it attacked the opponent's board extremely well.

In addition, in the dry-grinding material of the present invention, fJ of Mn@Ka
There were 6 papers in one book by J., and a separate test was conducted for each of the Mn's signatures, but it was O! It is also clear that the preferred range is 1 s- or less for 1 button. 1S1 to 0%! l Anything that exceeds
The leaching during sintering has been eliminated because it impairs the workability of papermaking and sintering.

In addition, in a separate test with respect to metal oxide 1, it was found that O having a Mohs hardness of 4 or more was preferable, and that it could also be used excessively for gold X* compounds such as mullite.

In the present invention, as described above, the following effects can be obtained by adding manganese to a copper-based dry sintered friction material to obtain a specific component composition.

JP-A-58-157930 (3) ill A dry sintered friction material which is stable and exhibits an rtg-coupled phenomenon k. The present invention has a relatively high friction coefficient of approximately 0.4 to 0.05, and excellent heat resistance. This means that a stable *m surface can be obtained even at high speed *#, and it can be said that it is suitable for automatic heavy use.

(2) A dry sintered friction material is provided that is characterized by its aggressiveness and squeaking against the opposing plate; in general, if the coefficient of friction is low, the IIg1 weight becomes low, and along with this, the Aggression and barking towards the board also increases. but,
In the present invention, the rate of wear on the opposite side where the number of friction points is high is also suppressed, and therefore, it also leads to a reduction in so-called squealing due to the lack of aggressiveness.

(3) A dry sintered 41I material is provided which is also suitable for water fade agglomerates. 1. In the present invention, by adding nickel and manganese to a copper-based matrix tube base, water fade is achieved. It is also recommended for its resistance to phenomena, making it particularly suitable for motorcycles made of dusting cedar. In this case, if you use stainless steel T9 steel as the mating plate, there will be no rust. will be resolved at the same time.

Claims (1)

[Claims] (1) In a dry m** rubbing material made of a copper-based sintered alloy, the sintered alloy has a weight ratio of 6G to 80-1 of steel, 3 to 1 of tin,
o *, zinc 15- or less, gold j14 consisting of hard particles
A dry sintered friction material containing -3 to 20-1 oxide, 3 to 10-1 graphite, 1 to 5 molybdenum disulfide, and 8 to 15% of lead and 1 to 15% of mold. +2) The dry emotional friction material described in Paragraph 1 of the Patent A Car Yoke is based on the fact that the JIIfR compound is made up of 4 or more hard particles at one time.