Alloy powder and method for repairing hard surface of heavy-duty gear by using alloy powder

An alloy powder and powder technology, which is applied in the field of hard surface carburizing layer repair of heavy-load gears, can solve the problem of high load, strong wear resistance and high compressive resistance, and low bonding strength of insert and thermal spraying that cannot meet the requirements of heavy-duty gears. , damage the heat treatment performance of gears, etc., to achieve the effect of small deformation of the workpiece, easy control of the repair process, and fine grains

Inactive Publication Date: 2021-07-20
王东生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are more or less certain defects in the repair of the hard-faced carburized layer of heavy-duty gears. For example, first, the transposition and displacement processing have great limitations; Destroying the heat treatment performance of the gear itself, it is easy to produce defects such as cracks and pores; 3. Brush plating is not suitable for repairing more damaged gears; the combination strength of inserts and thermal spraying is low, which cannot meet the heavy load and strong wear resistance of heavy-duty gears and high pressure resistance working characteristics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An alloy powder, characterized in that the alloy powder raw material components include: JY-F-1, JY-F-2 and JY-F-3, JY-F-1, JY-F-2 and JY- The raw material ratio between F-3 is 1:1:1;

[0027] The JY-F-1 raw material composition includes: 0.02 parts of carbon, 11.6 parts of chromium, 48.75 parts of nickel, 11.4 parts of molybdenum, 1.85 parts of niobium and 13.73 parts of iron, all raw materials are calculated by weight;

[0028] The JY-F-2 raw material composition includes: 0.25 parts of carbon, 14.4 parts of chromium, 0.8 parts of nickel, 1.7 parts of boron and 73.35 parts of iron, all raw materials are calculated by weight;

[0029] The JY-F-3 raw material composition includes: 0.09 parts of carbon, 0.96 parts of nickel, 12.85 parts of chromium, 0.76 parts of boron, 0.78 parts of silicon and 78.76 parts of iron, all raw materials are calculated by weight.

[0030] A method for repairing the hard surface of a heavy-duty gear using the alloy powder involved in claim 1...

Embodiment 2

[0037] An alloy powder, characterized in that the alloy powder raw material components include: JY-F-1, JY-F-2 and JY-F-3, JY-F-1, JY-F-2 and JY- The raw material ratio between F-3 is 1:1:1;

[0038] The JY-F-1 raw material composition includes: 0.04 parts of carbon, 12.8 parts of chromium, 50.25 parts of nickel, 12.6 parts of molybdenum, 2.02 parts of niobium and 20.04 parts of iron, all raw materials are calculated by weight;

[0039] The JY-F-2 raw material composition includes: 0.36 parts of carbon, 17.6 parts of chromium, 2.6 parts of nickel, 2.4 parts of boron and 78.46 parts of iron, all raw materials are calculated by weight;

[0040] The JY-F-3 raw material composition includes: 0.18 parts of carbon, 1.68 parts of nickel, 13.68 parts of chromium, 1.46 parts of boron, 0.98 parts of silicon and 81.24 parts of iron, all raw materials are calculated by weight.

[0041]A method for repairing the hard surface of a heavy-duty gear using the alloy powder involved in claim 1,...

Embodiment 3

[0048] An alloy powder, characterized in that the alloy powder raw material components include: JY-F-1, JY-F-2 and JY-F-3, JY-F-1, JY-F-2 and JY- The raw material ratio between F-3 is 1:1:1;

[0049] The JY-F-1 raw material composition includes: 0.06 parts of carbon, 14.3 parts of chromium, 53.25 parts of nickel, 15.2 parts of molybdenum, 3.46 parts of niobium and 26.38 parts of iron, all raw materials are calculated by weight;

[0050] The JY-F-2 raw material composition includes: 0.45 parts of carbon, 19.6 parts of chromium, 3.6 parts of nickel, 3.0 parts of boron and 82.85 parts of iron, all raw materials are calculated by weight;

[0051] The JY-F-3 raw material composition includes: 0.22 parts of carbon, 2.35 parts of nickel, 15.56 parts of chromium, 1.96 parts of boron, 1.24 parts of silicon and 84.56 parts of iron, all raw materials are calculated by weight.

[0052] A method for repairing the hard surface of a heavy-duty gear using the alloy powder involved in claim 1...

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Abstract

The invention relates to a high-load gear hard surface carburized layer repairing technology, in particular to alloy powder and a method for repairing a hard surface of a heavy-duty gear by using the alloy powder. The alloy powder is prepared from the following raw materials: JY-F-1, JY-F-2 and JY-F-3, wherein the raw material ratio of the JY-F-1 to the JY-F-2 to the JY-F-3 is 1:1:1. The method for repairing the hard surface of the heavy-duty gear through the alloy powder comprises the following steps of S1, clamp repairing, S2, CMD welding, S3, laser welding, S4, heat treatment and S5, result detection. The method for repairing the hard surface of the heavy-duty gear has the characteristics of being short in repairing time, large in welding thickness, small in workpiece deformation, good in fusion performance, high in welding quality, easy to implement and the like. In addition, the method for repairing the hard surface of the heavy-duty gear can be used for effectively repairing a carburized layer of the hard surface of the heavy-duty gear to reach and be close to the hardness, the wear resistance and the pressure resistance of a hard surface body of the gear.

Description

technical field [0001] The invention relates to the technical field of repairing carburized layers on hard surfaces of heavy-duty gears, in particular to an alloy powder and a method for repairing the hard surfaces of heavy-duty gears using the powder. Background technique [0002] Heavy-duty gears refer to gears with large transmission power, large load capacity, low speed, and large impact loads. Technical requirements require them to have excellent wear resistance, high contact fatigue strength and bending fatigue strength, etc., and have high impact resistance. and carrying capacity. With the long-term use of heavy-duty gears, the hard-faced carburized layer of heavy-duty gears will be damaged. Repairing the hard-faced carburized layer of heavy-duty gears has always been a difficult problem in the industry. [0003] In the prior art, there are more or less certain defects in the repair of the hard-faced carburized layer of heavy-duty gears. For example, first, the trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/70B22F1/00C22C38/44C22C38/48C22C38/54C22C38/02C21D9/50
CPCB22F1/0003B23K26/21B23K26/702C22C38/44C22C38/48C22C38/54C22C38/02C21D9/50
Inventor 王东升
Owner 王东生
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