JPS605849A - Sliding contact material - Google Patents

Abstract

PURPOSE:To obtain a sliding contact material having superior wear resistance by adding specified elements to an Au-Pt-Pd-Ag alloy without changing the ratio in the composition. CONSTITUTION:To an alloy for a sliding contact material having a composition consisting of, by weight, 19-21% Au, 4-6% Pt, 44-46% Pd and 29-31% Ag are added 1-10wt% Sn and 0.5-3wt% at least one among Te, Sr and Zr without changing the ratio in the composition. By adding the elements, the hardness of the alloy is increased, so the resistance of the alloy to wear during sliding along a commutator is improved. When 0.01-0.5wt% Fe group metal such as Ni is substituted for part of Sn, the grains of the alloy are made fine to further improve the wear resistance.

Description

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

t; L end, l111 motion 1) 1 point 4, 1 fee, and various monthly interest rates are used for ζ, material for the contact + I'4 - (A u 19~21 jQ, i , 19 hairs,
t' 14-6 cities IIj%, l-'d 44-46 cities (7
j5'6. A1129-31i (old 1:6,1) alloy 17-1 was widely used.

However, the brush contact ζ manufactured using this alloy has poor abrasion resistance when sliding with the commutator, and is prone to wear 1'5), causing noise generation.

The present invention has been made to eliminate the drawback of 19W, and provides a sliding contact material whose wear resistance is improved by adding a slight amount of a specific element to the above-mentioned alloy material as a base material. This is what I am trying to do.

The sliding contact material of the present invention
%.

P' t 4-6 Market weight Pd 44-46% by weight, Ag
Without changing the composition ratio of Alloy 4A material consisting of 29-31% market weight, Sn was added to 1-10i1i4i)%.
, Sr, and Zr in an amount of 0.5 to 3% by weight.

In the sliding contact material of the present invention, Δu19 to 21 weight (,
1%, pt4-6I (111% p d 44-46w;,:%, Δg29-31wt 11[%), Sn was added to polymerization 1 phase O', 1 without changing its composition ratio. 1-I
t) jli ii% and T”e, 3r.

The reason why at least one type of Zr is added in an amount of 0.5 to 3% by weight is as follows: +iii. Alloy side alloy material I! J I"i"i"i"i"i"i "I"i "I"i "increasingly" Sn and "T'e, Sr, Zr intermetallic compounds ii!t.

In order to make it hard by
:! Or a small amount of Te, Sr, or Zr (all types are 0.
5iIX amount% not yet? +'a cannot exhibit its effect, and S
n exceeds 10% by market weight, or 'l'e, Sr,
If at least one type of Zr exceeds 3% by weight, the amount of oxidants generated increases, the contact resistance becomes high, and the contact resistance becomes unstable.

In addition, a part of the Sn is added to 0.0L to 0.5% by weight of 1
′? The reason why J5Q was obtained by placing it in C group Kinku l: 1. To make the crystal grains IX, '< fill and further improve the abrasion resistance. : In J, the effect of crystal grain ti''' + thinning does not appear, 0.5% by weight
Even if the amount exceeds 1, no further effect will be obtained.

Next, according to the present invention with the component composition shown in the left curve below (lli: 1l-1 in the order of 11 moving contact points and the conventional printing/1 silicate point 4A: t4 in the order of ¥0.7) ″Make line +4,
Cut each of these k into 8 inch pieces, and put 2 pieces in parallel -μ
+'4i is welded to a composite material of 'l'6f I Omm, length 13mm, thickness 0.2mm, and a 2R circle Jj is attached to the other end.
A brush contact was made by bending the X-shaped contact part. Soshi C
Place the 1x point of each print on a circle (11L-shaped 1.
1; Let me! A sliding test was carried out under the following test conditions with the flow child rotated at a positive angle and the slider was rotated in a positive direction, and the amount of wear and contact resistance were measured, and the results shown in 1'iI on the right side of the table below were obtained. Ta.

Test conditions Current: 0.6A Voltage: 12V Load: Resistive load rotation speed: 1000rprn Circumferential speed: 1
30-120 m/min contact crab 100 g Test time = 7 hours (blank below) As is clear from the table above, the brush contacts of Examples 1 to 4 had significantly less wear than the conventional brush contacts. It can be seen that the contact resistance is equally low and stable. This is simply because the sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 4, becomes hard due to the total interflexural compound 11k of Sn, 'I''e, Sr, and Zr. This is because the wear resistance is improved.In particular, the reason why the amount of wear of the brush contact of Example 4 is even smaller than that of the brush contacts of Examples 1 to 3 is because of the sliding of the present invention that constitutes the brush wire. Contact 4,
Fe group metal is added to the 4th material, and its crystal grains become R11.
This is because it is unified and dispersed, which further improves P and abrasion resistance.

Above iir: As mentioned above, the present invention (j11 moving contact material) has significantly better wear resistance than the conventional sliding contact material 1-1, generates 4% less wear powder, and has less noise. Most of the occurrences are 7.llK, (and also the conventional 1\V'I
'Contact %l equivalent to JJ contact 4-I charge: llK
This has the advantage that printed contacts having resistance can be made as long as t and tl.

Claims (1)

[Claims] ■) Δu 19-21ip, ,! 1:H%, Pt
4 ・~6 tons heavy muscle, Pd no 14~46 width fit 96
, A [29~31mj1t 9'6 Yori Ij-
'i, 1 to 10i1fFjF% and Te, Sr, Z to the alloy material 114 without changing its composition ratio.
L'f made by adding at least one type of r in an amount of 0.5 to 3↑1%! FJJ contact 4" fee. 2) Part of the Sn is 0.01 to 0.5'fJ:l'
4% Fe group metal with 1;5: texture of the patent claim Ii2YnlglW>"4No1:4 moving contact 44 material.