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Local nitrogenated oil ring lining ring and preparation method thereof

A technology of nitriding oil rings and lining rings, which is applied to piston rings, mechanical equipment, and rings manufactured by wire, etc., which can solve the problems of poor wear resistance of ordinary heat-treated lining rings, high brittleness of salt bath nitriding lining rings, and increased Oil return channel and other problems, to reduce the risk of carbon deposit stuck, improve tear resistance, increase the effect of the return channel

Inactive Publication Date: 2017-09-15
ANQING TP GOETZE PISTON RING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a partial nitriding oil ring backing ring and its preparation method. High brittleness, easy to break, and it also increases the oil return channel on the oil surface, reducing the risk of carbon deposition in the oil ring.

Method used

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  • Local nitrogenated oil ring lining ring and preparation method thereof
  • Local nitrogenated oil ring lining ring and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for preparing a partially nitrided oil ring lining ring, comprising the steps of:

[0029] (1) Electroplate a layer of nickel-plated layer on the surface of the wire rod made of the lining ring, first assemble an in-line processing device consisting of a degreasing cleaning tank, an electroplating tank and a dryer, wherein the degreasing cleaning tank is provided with carbon Hydrogen cleaning agent, the temperature of the degreasing cleaning tank is 90 ℃; The concentration is 300g / L nickel sulfate, the concentration is 23g / L nickel chloride and the mixed solution of concentration is 30g / L boric acid in the described electroplating tank, the electroplating tank The temperature is 85°C; the temperature of the dryer is 125°C, and the wire passes through the in-line processing device at a speed of 5m / min, so that the surface of the wire is evenly covered with a layer of nickel plating;

[0030] (2) The nickel-plated wire in step (1) is first extruded into a corruga...

Embodiment 2

[0035] A method for preparing a partially nitrided oil ring lining, comprising the following preparation steps:

[0036] (1) Electroplate a layer of nickel-plated layer on the surface of the wire rod made of the lining ring, first assemble an in-line processing device consisting of a degreasing cleaning tank, an electroplating tank and a dryer, wherein the degreasing cleaning tank is provided with carbon Hydrogen cleaning agent, the temperature of the degreasing cleaning tank is 85 ℃; The concentration is 280g / L nickel sulfate, the concentration is 20g / L nickel chloride and the mixed solution that concentration is 25g / L boric acid in the described electroplating tank, the electroplating tank The temperature is 80°C; the temperature of the dryer is 120°C, and the wire passes through the in-line processing device at a speed of 5m / min, so that the surface of the wire is evenly covered with a layer of nickel plating;

[0037] (2) The nickel-plated wire in step (1) is first extrude...

Embodiment 3

[0042] A method for preparing a partially nitrided oil ring lining ring, comprising the steps of:

[0043] (1) Electroplating a layer of nickel-plated layer 2 on the surface of the wire rod made of the lining ring, first assemble an in-line processing device composed of a degreasing cleaning tank, an electroplating tank and a dryer, wherein the degreasing cleaning tank is provided with Hydrocarbon cleaning agent, the temperature of the degreasing cleaning tank is 95°C; the electroplating tank is provided with a concentration of 320g / L nickel sulfate, a concentration of 25g / L nickel chloride and a mixed solution of 35g / L boric acid, the electroplating tank The temperature of the dryer is 92°C; the temperature of the dryer is 130°C, and the wire passes through the in-line processing device at a speed of 5m / min, so that the surface of the wire is evenly covered with a layer of nickel plating 2;

[0044] (2) The nickel-plated wire in step (1) is first extruded into a corrugated st...

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Abstract

The invention discloses a local nitrogenated oil ring lining ring and a preparation method thereof, and relates to the technical field of piston lining rings for engines. The preparation method comprises the following steps that (1) a nickel plated layer is prepared on the surface of wire materials of the prepared lining ring; (2) the lug portions of the lining ring and bulge platforms are prepared to fracture the nickel-plated layer of the lug portions of the lining ring; (3) the wire materials are wound into a ring; (4) salt-bath nitriding is conducted on the lining ring; and (5) the nitrogenated lining ring is cut off, and the final local nitrogenated oil ring lining ring is prepared. The local nitrogenated oil ring lining ring comprises a corrugated lining ring base body, and each crest of the lining ring base body is provided with a groove with two sides of different heights. The two sides of each groove are provided with the lining ring lug portions and the bulge platforms correspondingly. The surfaces of the lining lug portions are covered with nitride-plated layers, and other surfaces are covered with the nickel-plated layer. According to the local nitrogenated oil ring lining ring, the problem that the wear resistance of ordinary heat treatment lining rings is bad is solved, the problems that ordinary salt-bath nitrogenated lining rings are high in brittleness and prone to fracturing are solved, the oil controlling effect of the oil ring is improved, and the engine oil consumption of the engine is reduced.

Description

technical field [0001] The invention relates to the technical field of piston lining rings for engines, in particular to a partially nitriding oil ring lining ring and a preparation method thereof. Background technique [0002] The existing engine piston oil ring is composed of an upper and a lower pair of scraper rings and a middle lining ring. The scraper ring is supported by the support arm of the lining ring and the ear of the lining ring. The scraper ring and the support arm of the lining ring The contact is face-to-face contact, and the contact surface pressure is very small, so the wear of the support arm of the lining ring is very small during the whole working process, and the elastic force of the entire oil ring is transmitted to the scraper ring through the ear of the lining ring, so the lining ring The contact force between the ear and the wiper ring is very high, and the ear of the lining ring is very easy to be worn. In order to avoid the ear of the lining rin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/12C25D7/06C23C8/48C23C8/04B21F37/00F02F5/00
CPCC25D3/12B21F37/00C23C8/04C23C8/48C25D7/0607F02F2200/00F16J9/00F16J9/22
Inventor 王星卢敏王东升程伟胜
Owner ANQING TP GOETZE PISTON RING