JPS60224749A - Sliding contact material - Google Patents

Abstract

PURPOSE:To obtain the titled material having superior wear resistance and low and stable contact resistance by adding specified amounts of Sb, Si, Bi, Ge or Ga to an alloy material having a specified composition consisting of Au, Ag and Pd. CONSTITUTION:A sliding contact material having improved wear resistance is obtd. by adding 1-10wt% Sb and 0.5-3wt% at least one among Si, Bi, Ge and Ga to an alloy material consisting of 30-50wt% Au, 20-40wt% Ag and 20- 40wt% Pd without changing the ratio in the composition. An Fe group element such as Fe, Ni or Co may be substituted for part of said Sb in the range of 0.01-0.5wt%. When said sliding contact material is used a brush contact producing very little dust because of its superior wear resistance and hardly generating noise because of its low and stable contact resistance can be obtd.

Description

[Detailed description of the invention] The present invention relates to improvements in sliding contact materials.

Conventionally, various materials have been named for ζ as the (N moving contact material, and in particular, A u , '1O
-50 flj bi%, A g 20-40 wt%, p
An alloy material consisting of 20 to 40 mki% of d was considered.

However, brush contacts made of this alloy material have poor abrasion resistance when sliding with the rectifier J'-, and tend to generate abrasion powder, causing noise.

The present invention has been made to eliminate such drawbacks,
It is an object of the present invention to provide a sliding contact material based on the above-mentioned alloy material (A) with a slight addition of a specific material to improve wear resistance.

The sliding contact material of the present invention contains 30 to 50% by weight of Au.

sb was added to an alloy material consisting of Ag2O~40% by weight and Pd 20~40% by weight without changing the composition ratio.
It is made by adding 10% by weight of market weight and 0.5 to 3% by weight of at least one of 3i, 3i, Ge, and Ga.

In addition, the sliding contact material of the present invention contains Fe group elements (F'
e.

Ni, Co) may be substituted.

In the sliding contact material of the present invention, Au 30-50% by weight, Ag2O-40% by weight, I) d20-40% by weight.
Without changing the composition ratio, s is added to the alloy material consisting of
The reason for adding 1 to 10% by weight of b and 0.5 to 3% by weight of at least one of Si, 13i, Ge, and Ga is to improve the wear resistance of the alloy material. Therefore, 3;b or lliid% or Si, lJi.

(J (+, (,+i+) at least species 0.
If the amount of Mf is less than 5%, the effect cannot be exhibited for 1 minute, and sb
Is it 10% by weight, or at least one of Si, 13i, Gc, Ga, or oxides when it exceeds 3% by weight? -11
The amount increases, and the long I resistance is high, making it unreasonable and unstable.

) 1: Sb (/J ・part o, ot ~ o', s weight H
% by weight of the Fe group element, the crystal grains become finer and the wear resistance is further improved. When O is less than 1% by weight, the effect of grain refinement does not appear, and when 0.
Even if it exceeds 51% by weight, no further effect can be obtained.

Next, using the sliding contact material of the present invention (J) and the conventional sliding contact material (A) having the component compositions shown in the left column of the table below, the wire diameter was 0.
Make 7++ meters of brush wire and make each piece 8 fins long.
Cut them off, put them in parallel, and connect one end to a width of 10++m and a resistance of 4Ω.
Welded to a base material with a thickness of 3 mm and a thickness of 0.211, and a 2H on the other end.
A -ζ brush contact was made by bending the arc-shaped contact part.

Then, each brush contact was brought into contact with a disc-shaped commutator made of Ag-Cdliil%, and the commutator was rotated in forward and reverse directions to conduct a sliding test under the following test conditions to determine the amount of wear and contact resistance. The measurement location is in the right column of the table below.

The results shown are obtained.

d Inkomajo Iq Current: 0.6A Voltage: 12■ Load: Resistance load Rotation speed: 1000rpm Circumferential speed: 130-120m/min Contact crab 100g Test time: 7 hours (blank below) Above As is clear from the table, the brush contacts of Examples 1 to G have significantly less wear than the conventional brush contacts, indicating that the contact resistance is low and stable.

This refers solely to the IH dynamic contact material of the present invention, sb, Si, and B, which constitutes the brush wire of the brush contacts of Examples 1 to 6.
This is because the addition of at least one of i, Ge, and Ga increases hardness and improves wear resistance. In particular, the reason why the amount of wear of the brush contact of Example 5.6 is even smaller than that of the brush contact of Example 1.2 is that the FC group metal is added to the sliding contact material of the present invention constituting the brush wire. Being done,
This is because the crystal grains have become finer and more dispersed, further improving wear resistance.

As detailed above, according to the sliding contact material according to the present invention,
Compared to conventional sliding contact materials, it has remarkable wear resistance, generates extremely little abrasion powder, and has the effect of providing a brush contact with low and stable contact resistance and almost no noise. .

Applicant: Ta+iJ Kikinzoku Kogyo Co., Ltd.

Claims (1)

[Claims] 1) A u30-50JIHft%, A [! 2
040ff2iit%, +'d20~40rfii
)%, sb is 1 to IojlI amount% and Sl, 13! without changing the composition ratio. . ” = (J; 1t1 contact abrasive material consisting of C with addition of at least - species of J at 0.5-3%. 2) Part of Sb is F in the range of 0.01-0.5mM%.
The lij moving contact 421 material according to claim 1, wherein the lij moving contact 421 material is substituted with an element of group e.