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Thermal processing technology for wear-resistant gears

A preheating and gear technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of gear damage and the inability of gears to be connected together, and achieve the effect of improved toughness and complete heating

Inactive Publication Date: 2014-03-19
常熟市东风齿轮厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] If the existing gears are under too much pressure during work, or if they are used more frequently, the gears will be easily damaged, so that the gears cannot be well connected together, and the gears are all inside, so it is not easy to replace them. As a result, the existing gear applications have higher and higher requirements for gears.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A heat treatment process for wear-resistant gears, comprising the steps of:

[0018] 1) pickling the gear;

[0019] 2) Then put the gear into the heating furnace for preheating treatment, the temperature of the furnace is raised to 206 ° C, and carbon dioxide is introduced as a protective gas, and the temperature is kept for 5 hours;

[0020] 3) Then raise the furnace temperature to 604°C and keep it warm for 3 hours;

[0021] 4) Then raise the furnace temperature to 806°C and keep it warm for 2 hours;

[0022] 5) Out of the furnace, put the gear into 703°C quenching oil for quenching and cooling for 1 hour;

[0023] 6) Cleaning, cleaning the gears with gasoline;

[0024] 7) Put the gear into quenching oil at 202°C for 1 hour to quench and cool, then take out the gear and air-cool to room temperature;

[0025] 8) Then put the gear into the tempering furnace for tempering treatment. The temperature of the furnace is raised to 601°C, and it is kept for 5 hours, and th...

Embodiment 2

[0027] A heat treatment process for wear-resistant gears, comprising the steps of:

[0028] 1) pickling the gear;

[0029] 2) Then put the gear into the heating furnace for preheating treatment, the temperature of the furnace is raised to 210°C, and carbon dioxide is introduced as a protective gas, and the temperature is kept for 5 hours;

[0030] 3) Then raise the furnace temperature to 610°C and keep it warm for 3 hours;

[0031] 4) Then raise the furnace temperature to 810°C and keep it warm for 2 hours;

[0032] 5) Out of the furnace, put the gear into 705°C quenching oil for quenching and cooling for 1 hour;

[0033] 6) Cleaning, cleaning the gears with gasoline;

[0034] 7) Put the gear into quenching oil at 205°C to quench and cool for 1 hour, then take out the gear and air-cool to room temperature;

[0035] 8) Then put the gear into the tempering furnace for tempering treatment. The temperature of the furnace is raised to 605°C, and it is kept for 5 hours, and then...

Embodiment 3

[0037] A heat treatment process for wear-resistant gears, comprising the steps of:

[0038] 1) pickling the gear;

[0039] 2) Then put the gear into the heating furnace for preheating treatment, the temperature of the furnace is raised to 200 ° C, and carbon dioxide is introduced as a protective gas, and the temperature is kept for 5 hours;

[0040] 3) Then raise the furnace temperature to 600°C and keep it warm for 3 hours;

[0041] 4) Then raise the furnace temperature to 800°C and keep it warm for 2 hours;

[0042] 5) Out of the furnace, put the gear into 700°C quenching oil for quenching and cooling for 1 hour;

[0043] 6) Cleaning, cleaning the gears with gasoline;

[0044] 7) Then put the gear into quenching oil at 200°C to quench and cool for 1 hour, then take out the gear and air cool to room temperature;

[0045] 8) Then put the gear into the tempering furnace for tempering treatment. The temperature of the furnace is raised to 600°C, and it is kept for 5 hours, a...

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PUM

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Abstract

A disclosed thermal processing technology for wear-resistant gears comprises the following steps: 1) performing acid pickling on gears; 2) putting the gears into a heating furnace to perform preheat treatment, raising the furnace temperature to 200-210 DEG C, introducing carbon dioxide as a protective gas, and keeping the temperature for 5 h; 3) raising the furnace temperature to 600-610 DEG C and keeping the temperature for 3 h; 4) raising the temperature to 800-810 DEG C and keeping the temperature for 2 h; 5) discharging from the furnace, putting the gears in quenching oil with a temperature of 700-705 DEG C for quenching cooling for 1 h; 6) cleaning the gears with gasoline; 7) putting the gears into quenching oil with a temperature of 200-205 DEG C for quenching cooling for 1 h, taking out the gears, and cooling in wind to room temperature; and 8) putting the gears into a tempering furnace to perform tempering processing, raising the furnace temperature to 600-605 DEG C, keeping the temperature for 5 h, and discharging from the furnace and cooling to room temperature. The provided thermal processing technology for the wear-resistant gears is capable of relatively completely heating and helps to improve the toughness of the interior of the gears.

Description

technical field [0001] The invention relates to a heat treatment process for wear-resistant gears. Background technique [0002] If the existing gears are under too much pressure during work, or if they are used more frequently, the gears will be easily damaged, so that the gears cannot be well connected together. Moreover, the gears are all inside, and it is not easy to replace them. As a result, in existing gear applications, there are increasingly higher requirements for gears. Contents of the invention [0003] The purpose of the present invention is to provide a heat treatment process for wear-resistant gears, which can heat more completely and improve the toughness inside the gears. [0004] In order to achieve the above object, the technical solution of the present invention is to design a heat treatment process for wear-resistant gears, including the following steps: [0005] 1) pickling the gear; [0006] 2) Then put the gear into the heating furnace for prehea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/25C21D9/32
Inventor 万小华
Owner 常熟市东风齿轮厂