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Metal heat treatment process

A metal heat treatment, metal workpiece technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of insignificant energy saving effect, inability to effectively improve mechanical properties, complex heat treatment process, etc., to achieve improved Comprehensive mechanical properties, prolonging service life, and improving anti-wear performance

Inactive Publication Date: 2018-06-26
魏龙飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the advantages of high strength and high wear resistance, alloy steel castings gradually replace ordinary carbon steel parts and are widely used in the field of casting. In practical applications, it is necessary to reasonably select the strength, hardness and toughness of low alloy steel. The heat treatment process of steel castings is complicated, the energy saving effect is not obvious, and its mechanical properties cannot be effectively improved after treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A metal heat treatment process, comprising the steps of:

[0019] A. Cleaning the metal workpiece: Pickling the surface of the metal workpiece with pickling solution, then putting it in clean water to rinse it repeatedly for 3 times, and then drying it in an oven at 60°C for 20 minutes;

[0020] B. Pre-carburizing of metal workpieces: Put the cleaned metal workpieces into the carburizing furnace, slowly raise the temperature of the carburizing furnace, pass the mixed gas continuously during the heating process, and the speed of the mixed gas is 0.2L / h. After the furnace is heated to 800°C, the temperature is kept constant for 50 minutes, and then pre-carburized, with a carbon potential of 0.9;

[0021] C. Carburizing of metal workpieces: After that, the carburizing furnace is heated up. During the heating process, propane gas is continuously fed in at a rate of 0.1L / h. The carburizing furnace is heated to 900°C, and then the temperature is kept constant for 80 minutes t...

Embodiment 2

[0030] A metal heat treatment process, comprising the steps of:

[0031] A. Cleaning the metal workpiece: Pickling the surface of the metal workpiece with pickling solution, then putting it in clean water to rinse it repeatedly for 5 times, and then drying it in an oven at 80°C for 40 minutes;

[0032] B. Pre-carburizing of metal workpieces: Put the cleaned metal workpieces into the carburizing furnace, slowly raise the temperature of the carburizing furnace, pass the mixed gas continuously during the heating process, and the speed of the mixed gas is 0.3L / h. After the furnace is heated to 840°C, the temperature is kept constant for 80 minutes, and pre-carburization is carried out, and the carbon potential is 1.2;

[0033] C. Carburizing of metal workpieces: After that, the carburizing furnace is heated up, and propane gas is continuously fed in during the heating process, and the feeding rate is 0.1L / h. , carbon potential 1.2;

[0034] D. Primary diffusion of metal workpiec...

Embodiment 3

[0042] A metal heat treatment process, comprising the steps of:

[0043] A. Cleaning the metal workpiece: Pickling the surface of the metal workpiece with pickling solution, then putting it in clean water to rinse it repeatedly for 4 times, and then drying it in an oven at 70°C for 30 minutes;

[0044] B. Pre-carburizing of metal workpieces: Put the cleaned metal workpieces into the carburizing furnace, slowly raise the temperature of the carburizing furnace, and pass the mixed gas continuously during the heating process, and the speed of the mixed gas is 0.25L / h. After the furnace is heated to 820°C, the temperature is kept constant for 65 minutes, and pre-carburizing is carried out, and the carbon potential is 1;

[0045] C. Carburizing of metal workpieces: After that, the carburizing furnace is heated up, and propane gas is continuously fed in during the heating process, and the feeding rate is 0.1L / h. , carbon potential 1;

[0046] D. Primary diffusion of metal workpiece...

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Abstract

The invention discloses a metal heat treatment process. The metal heat treatment process comprises the following steps: A. metal workpiece cleaning; B. metal workpiece pre-carburization; C. metal workpiece carburization; D. primary diffusion for a metal workpiece; E. secondary diffusion for the metal workpiece; F. quenching and cooling; and G. rust removal treatment. The heat treatment process disclosed by the invention is energy-saving and environment-friendly; and the metal workpiece obtained through heat treatment is high in hardness and strength, and the service life of a metal product canbe prolonged.

Description

technical field [0001] The invention relates to the technical field of metal heat treatment, in particular to a metal heat treatment process. Background technique [0002] Due to the advantages of high strength and high wear resistance, alloy steel castings gradually replace ordinary carbon steel parts and are widely used in the field of casting. In practical applications, it is necessary to reasonably select the strength, hardness and toughness of low alloy steel. The heat treatment process of steel castings is complicated, the energy saving effect is not obvious, and its mechanical properties cannot be effectively improved after treatment. Contents of the invention [0003] The purpose of the present invention is to provide a metal heat treatment process to solve the problems raised in the above-mentioned background technology. [0004] In order to achieve the above object, the present invention provides the following technical solutions: a metal heat treatment process,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/22C23C8/80C21D1/18C21D6/00
CPCC23C8/22C21D1/18C21D6/00C23C8/80
Inventor 魏龙飞
Owner 魏龙飞
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