A heat treatment process for low carbon alloy materials

A low-carbon alloy and process technology, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of unsatisfactory requirements, unsatisfactory system heat treatment technology, etc., and achieve service life extension, bending Improvement of performance, effect of increasing hardness and strength

Inactive Publication Date: 2011-12-14
MEISHAN HENGSHENG MECHANICAL EQUIP
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Problems solved by technology

[0006] In the processing technology of low-carbon alloy materials for riveting devices, especially 12Cr2Ni4 materials, there is no systematic and comprehensive processing technology solution, and the results of material processing cannot meet the satisfactory requirements. The tempering heat treatment process can obtain higher surface hardness and core toughness. Under the condition of maint

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  • A heat treatment process for low carbon alloy materials
  • A heat treatment process for low carbon alloy materials
  • A heat treatment process for low carbon alloy materials

Examples

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Example Embodiment

[0030] Example 1

[0031] This example uses the heat treatment process of the present invention.

[0032] Material preparation, take a riveter made of 12Cr2Ni4 alloy material to remove surface debris.

[0033] For heat treatment, the riveting device made of the above 12Cr2Ni4 alloy material is processed in the following steps,

[0034] 1. Carbonitriding, to treat the workpiece under the condition of 850℃~870℃, add anhydrous methanol at a rate of 180~200 drops / minute, and after a steady 60~90 minutes, 120~140 drops / minute Add kerosene at a rate of 240~280ml / min while injecting 99.99% ammonia gas for 60~90 minutes, and then add kerosene at a rate of 70~90 drops / min while injecting the concentration at 160~200ml / min After 150~180 minutes of 99.99% ammonia gas; cool down to 660℃~720℃, add anhydrous methanol dropwise at a rate of 60~90 drops / min while passing in 99.99% ammonia gas at a concentration of 90~120 ml / min 120 minutes to room temperature; the carbonitriding field can be represe...

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Abstract

The invention discloses a heat treatment process of a low-carbon alloy material, and the heat treatment process comprises the steps of carbonitriding treatment, quenching treatment, cryogenic treatment and tempering treatment. The low-carbon alloy material, in particular 12Cr2Ni4 alloy material after the treatment through the process can obtain the surface with higher hardness and the heart part with strong toughness, and under the condition of keeping the higher toughness in a workpiece, a surface layer with high hardness and high strength can be obtained, thereby improving the abrasion resistance and the strength of the workpiece and enabling the service life of the workpiece to be in a close relationship with the toughness of the surface layer and good matching of the strong toughness of the surface layer and the heart part. After adopting the cryogenic treatment, the service life can be well prolonged and the hardness and the strength of a matrix can be improved.

Description

Technical field [0001] The present invention is a thermal treatment technology field for metal materials, especially the heat treatment process of low -carbon alloy materials. Background technique [0002] Thermal treatment technology usually includes technical methods such as carbon nitrogen co -seepage, quenching, deep cold treatment, and fire recovery. Especially for the recent development of deep -cold treatment, the characteristics of materials have been further improved after the treatment of materials.When the metal is hardened to the cooling process, the alloys and carbon are dissolved and combined and diffused to form Austenite. During the cooling process, Martensite is formed due to the suppression of low temperature.The final change point (MF) of Mate Ages (MF) is very low, so quenching and cooling to room temperature will remain a large amount of Austennic, so it reduces the hardness, abrasion resistance and service life of the metal. At the same timeBroken cracking, ...

Claims

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Application Information

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IPC IPC(8): C23F17/00C23C8/32C21D1/18C21D1/00
Inventor 张森林张永明
Owner MEISHAN HENGSHENG MECHANICAL EQUIP
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