Carburizing method of low-carbon alloy steel

A low-carbon alloy steel and carburizing technology, applied in the field of high-temperature direct quenching, can solve the problems of high energy consumption, low production capacity, and long medium-temperature carburizing time, so as to meet technical requirements, reduce production costs, and increase carburizing speed. Effect

Active Publication Date: 2014-11-26
金湖县常盛动力机械配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to make the metallographic structure meet the specified requirements, the medium temperature direct quenching technology is usually used to carburize the low carbon alloy steel, but the medium temperature carburizing time is long, the energy consumption is large, and the production capacity is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation stage:

[0024] a. Preparation before opening the furnace: After the multi-purpose furnace starts the air infiltration or the continuous carburizing program, select the "low carbon alloy steel high temperature carburizing direct quenching process" and oil cooling method, and the furnace is loaded according to the automatic program to complete the furnace;

[0025] b, one stage (heating): set temperature (900 ℃) to start heating, feed methanol (4ml / min), adjust the atmosphere;

[0026] c. Stage 2 (determined at the temperature): the furnace temperature is raised to (900°C), set (5min), wait for time, and flow is adjusted to feed methanol (4ml / min), and the reference air pump is maintained (100ml / min);

[0027] d. The third stage (average temperature): set (10min), hold the time to make the temperature distribution in the furnace uniform, adjust the flow rate to introduce methanol (4ml / min), and keep the reference air pump (100ml / min).

[0028] (2) Strong...

Embodiment 2

[0038] (1) Preparation stage:

[0039] a. Preparation before opening the furnace: After the multi-purpose furnace starts the air infiltration or the continuous carburizing program, select the "low carbon alloy steel high temperature carburizing direct quenching process" and oil cooling method, and the furnace is loaded according to the automatic program to complete the furnace;

[0040] b, one stage (heating): set temperature (890 ℃) to start heating, feed methanol (3ml / min), adjust the atmosphere;

[0041] c. Stage 2 (determined at the temperature): the furnace temperature is raised to (890°C), set (5min), wait for time, flow is adjusted to feed methanol (3ml / min), and the reference air pump is maintained (80ml / min);

[0042] d. The third stage (average temperature): set (5min), hold the time to make the temperature distribution in the furnace uniform, adjust the flow rate to introduce methanol (3ml / min), and keep the reference air pump (80ml / min).

[0043] (2) Strong penetr...

Embodiment 3

[0053] (1) Preparation stage:

[0054] a. Preparation before opening the furnace: After the multi-purpose furnace starts the air infiltration or the continuous carburizing program, select the "low carbon alloy steel high temperature carburizing direct quenching process" and oil cooling method, and the furnace is loaded according to the automatic program to complete the furnace;

[0055] b, one stage (heating): set temperature (910 ℃) to start heating, feed methanol (5ml / min), adjust the atmosphere;

[0056]c. Stage 2 (determined at the temperature): the furnace temperature is raised to (910°C), set (5min), wait for time, flow is adjusted to feed methanol (5ml / min), and the reference air pump is maintained (120ml / min);

[0057] d. The third stage (average temperature): set (10min), hold the time to make the temperature distribution in the furnace uniform, adjust the flow rate to introduce methanol (5ml / min), and keep the reference air pump (120ml / min).

[0058] (2) Strong pene...

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Abstract

The invention discloses a carburizing method of low-carbon alloy steel. According to the method, through high-temperature deep seepage, the diffused carbon potential can be properly lowered, and the diffusion time can be prolonged, the time can be effectively shortened, the energy consumption can be reduced, and the carburized low-carbon alloy steel can meet the technical requirements.

Description

technical field [0001] The invention relates to a carburizing method of low-carbon alloy steel, in particular to a high-temperature direct quenching method. Background technique [0002] Low-carbon alloy steel generally undergoes a carburizing process to obtain high surface hardness, high wear resistance and fatigue strength, and maintain the strength and toughness of low-carbon alloy steel after quenching in the core, so that the workpiece can withstand impact loads. [0003] In order to make the metallographic structure meet the specified requirements, the medium temperature direct quenching technology is usually used to carburize the low carbon alloy steel, but the medium temperature carburizing time is long, the energy consumption is large, and the production capacity is low. Contents of the invention [0004] The object of the present invention is to solve the defects in the prior art and provide a carburizing technology with short carburizing time and low energy cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/22
Inventor 冯树云万枝平
Owner 金湖县常盛动力机械配件有限公司
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