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A kind of high wear-resistant material and its manufacturing method and application

A manufacturing method and high wear-resistant technology, applied in the field of compressor materials, can solve the problems of increased austenite quantity, high cost of raw materials, poor dimensional stability, etc., and achieve the effects of improved reliability, uniform distribution and low cost

Active Publication Date: 2016-04-27
PANASONIC WANBAO GUANGZHOU COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ① The use of a large number of precious alloy elements leads to high raw material costs;
[0005] ②The addition of a large amount of alloying elements requires a higher heat treatment temperature and high manufacturing costs;
[0006] ③ Alloying elements increase the amount of retained austenite after quenching, and the dimensional stability is poor (usually need to increase the cold treatment process);
[0007] ④ With a single, high content of phosphorus eutectic as the main wear-resistant phase, resulting in increased brittleness and high risk of cracks

Method used

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  • A kind of high wear-resistant material and its manufacturing method and application
  • A kind of high wear-resistant material and its manufacturing method and application
  • A kind of high wear-resistant material and its manufacturing method and application

Examples

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Effect test

Embodiment 1

[0044] The chemical composition (mass fraction %) of the piston material of the present embodiment is as follows:

[0045] C: 3.15; Si: 2.3; Mn: 0.8; S: ≤0.15; P: 0.25; B: 0.08; Cu: 0.4;

[0046] (1) The materials according to the above chemical composition ratios are melted into molten iron using an intermediate frequency electric furnace, and the melting temperature is controlled at 1450°C to 1600°C, which is 1580°C in this embodiment.

[0047] (2) Pour molten iron into the holding furnace, and use ferrosilicon or barium silicon inoculant to inoculate with the flow at the same time;

[0048] (3) The molten iron is poured into the casting ladle from the holding furnace, and the secondary inoculation treatment is carried out during injection; the casting temperature of the molten iron is kept at: 1300° C. to 1540° C., which is 1470° C. in this embodiment.

[0049] (4) The molten iron is poured from the casting ladle into the cavity of the sand mold, and the molten iron is coo...

Embodiment 2

[0058] The chemical composition (mass fraction %) of the piston material of the present embodiment is as follows:

[0059] C: 3.2; Si: 2.4; Mn: 0.6; S: ​​≤0.15; P: 0.25; B: 0.08; Cu: 0.4; Sn: 0.02;

[0060] The preparation method is the same as in Example 1. The obtained piston was excellent in wear resistance.

Embodiment 3

[0062] The chemical composition (mass fraction %) of the piston material of the present embodiment is as follows:

[0063] C: 3.2; Si: 2.5; Mn: 0.6; S: ​​≤0.15; P: 0.25; B: 0.10; Cu: 0.6; Sn: 0.02;

[0064] The preparation method is the same as in Example 1. The obtained piston was excellent in wear resistance.

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Abstract

The invention discloses a highly wearable material and a preparation method and an application thereof. The highly wearable material comprises the following chemical components in percentage by weight: 2.90-3.60% of C, 1.80-3.0% of Si, 0.40-1.00% of Mn, less than or equal to 0.15% of S, 0.05-0.45% of P, 0.01-0.20% of B, less than or equal to 1.0% of Cu, less than or equal to 0.06% of Sn, less than or equal to 0.03% of Sb and the balance of Fe and inevitable impurities. The preparation method comprises the following steps: melting; inoculating; re-inoculating; casting to form a piston blank; coarsely machining; thermally treating; finely machining and the like. The material can be applied to manufacturing a piston, a slide block or a crankshaft and the like of a rotary compressor. The piston, the slide block and the crankshaft manufactured by the material are low in cost, and the manufacturing cost is low and the material is highly wearable. For example, after long-term operation of the piston of the compressor, the working faces of the piston are free from remarkable wear and radial leakage of a refrigerant along a first end contact face of the piston-slide block is reduced, so that the performance safety and the reliability of the compressor are improved, and meanwhile, the manufacturing cost is lowered and the material selecting range of the piston for the rotary compressor is expanded.

Description

technical field [0001] The invention relates to the field of compressor materials, in particular to a high wear-resistant material and its manufacturing method and application. Background technique [0002] Rotary compressors are widely used due to their high efficiency, small size and light weight. The pump body of the existing rotary compressor generally consists of a slider 1, a spring 2, a piston 3, a cylinder 4, a crankshaft 5 and upper and lower bearings, such as figure 1 shown. As an important part of the pump body of the compressor, the piston 3 is driven by the crankshaft 5 to perform high-speed eccentric rotation. Closely fit to form a friction pair, the friction pair is a line contact, the contact surface pressure is extremely high, and the friction pair is in a critical lubrication state with less oil for a long time, which makes the contact parts prone to wear. Therefore, for the selection of the piston material, it is required to have high hardness, high wea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C33/08B22D1/00C21D1/18C21D6/04C21D5/00F04C29/00
Inventor 龚沛李德鹏
Owner PANASONIC WANBAO GUANGZHOU COMPRESSOR
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