Method for producing a swashplate

Patent metadata

Field	Value
Publication number	US-10792733-B2
Application number	US-201715825394-A
Country	US
Kind code	B2
Filing date	Nov 29, 2017
Priority date	Dec 6, 2016
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

The invention relates to a swashplate (5) for a swashplate compressor (1) comprising a main swashplate body (8), which is made from a sintering material, and to a method for producing the swashplate (5).

First claim

The invention claimed is:

1. A method for producing a swashplate for a swashplate compressor, wherein the swashplate comprises a main swashplate body, the method comprising:
making the main swashplate body from one or more sintering powders according to a powder-metallurgical method, wherein the main swashplate body is made from an iron-based sintering powder, wherein as the iron-based sintering powder an alloy is used which contains between 0.1 wt. % and 0.9 wt. % C, between 0 wt. % and 5.0 wt. % Ni, between 0.04 wt. % and 2 wt. % Mo, between 0.05 wt. % and 1 wt. % Mn and between 0 wt. % and 3 wt. % copper, the remainder being formed by iron,
plasma-nitriding or plasma-carbonitriding for hardening the surface of the main swashplate body to produce a plasma-nitrided or plasma-carbonitrided surface layer directly on the main swashplate body,
wherein the plasma-nitrided or plasma-carbonitrided surface layer at least approximately contours the pores of the surface of the main swashplate body.

2. The method as claimed in claim 1 , wherein an additional surface layer is deposited onto the plasma-nitrided or plasma-carbonitrided surface layer of the main swashplate body.

3. The method as claimed in claim 2 , wherein an anti-friction lacquer layer or a PVD-layer or a DLC-layer is deposited as an additional surface layer.

4. A swashplate for a swashplate compressor comprising
a main swashplate body, wherein the main swashplate body is made from an iron-based sintering powder, wherein the iron-based sintering powder is made from an alloy, which contains between 0.1 wt. % and 0.9 wt. % C, between 0 wt. % and 5.0 wt. % Ni, between 0.04 wt. % and 2 wt. % Mo, between 0.05 wt. % and 1 wt. % Mn and between 0 wt. % and 3 wt. % copper, the remainder being formed by iron,
a plasma-nitrided or plasma-carbonitrided surface layer produced directly on the main swashplate body by plasma-nitriding or plasma-carbonitriding the main swashplate body,
wherein the plasma-nitrided or plasma-carbonitrided surface layer at least approximately contours the pores of the surface of the main swashplate body.

5. The swashplate as claimed in claim 4 , wherein an additional surface layer is arranged on the plasma-nitrided or plasma-carbonitrided surface layer of the main swashplate body.

6. The swashplate as claimed in claim 5 , wherein the additional surface layer is an anti-frictional lacquer layer, a PVD layer or a DLC-layer.

7. A swashplate compressor comprising the swashplate as claimed in claim 4 .

Assignees

• Miba Sinter Austria Gmbh

Inventors

• Mueller Alexander
• Neto Jose Correa

Classifications

• F04B27/086 Primary

  swash plate · CPC title

• F05B2230/22

  by sintering · CPC title

• C22C38/04

  containing manganese · CPC title

• F16H39/10

  with cylinders arranged around, and parallel or approximately parallel to the main axis of the gearing · CPC title

• C23C8/38

  Treatment of ferrous surfaces · CPC title