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Steering rod quenching process

A technology of steering rod and process, applied in the direction of quenching device, manufacturing tool, furnace type, etc., can solve the problems of poor deformation resistance and wear resistance, insufficient stability of internal stress, fracture of steering rod, etc., and achieve deformation resistance and wear resistance Good, stable internal stress, and the effect of improving the quality of finished products

Inactive Publication Date: 2020-04-17
十堰昌昊工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In reality, sometimes the steering rod breaks, which poses a great safety hazard, and the quenching process is closely related to the quality of the steering rod. The steering rod made by the traditional quenching process has average hardness, insufficient internal stress and deformation resistance. And the wear resistance is poor, may cause the steering rod to appear abnormal, therefore, an improved technology is urgently needed to solve this problem existing in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A steering rod quenching process, comprising the following steps:

[0026] Step 1: After hot forging and stretching the steering rod, keep it warm at a temperature of at least 930°C for 30 minutes, and then lower the temperature in steps, the first time the temperature is 930-830°C, and the second time is 2 minutes later, the temperature is 830-730°C After 2 minutes, the third temperature drop is 730-630°C, after 2 minutes, the fourth temperature drop is 630-530°C, after 2 minutes, the fifth temperature drop is 530-430°C, after 2 minutes, the sixth temperature drop is 430-330°C, after 2 minutes, the seventh time Cool down to 330-230°C, the eighth time to cool down to 230-130°C after 2 minutes, and the ninth time to normal temperature after 2 minutes;

[0027] Step 2: Then heat treatment will be carried out, using stepwise heating, the first time the temperature is raised to 140°C, after keeping for 1min, the temperature is quickly raised to 300°C, after being kept for 1...

Embodiment 2

[0032] A steering rod quenching process, comprising the following steps:

[0033] Step 1: After hot forging and stretching the steering rod, keep it warm at a temperature of at least 930°C for 30 minutes, and then lower the temperature in steps, the first time the temperature is 930-830°C, and the second time is 2 minutes later, the temperature is 830-730°C After 2 minutes, the third temperature drop is 730-630°C, after 2 minutes, the fourth temperature drop is 630-530°C, after 2 minutes, the fifth temperature drop is 530-430°C, after 2 minutes, the sixth temperature drop is 430-330°C, after 2 minutes, the seventh time Cool down to 330-230°C, the eighth time to cool down to 230-130°C after 2 minutes, and the ninth time to normal temperature after 2 minutes;

[0034] Step 2: Then heat treatment will be carried out, using stepwise heating, the first time the temperature is raised to 140°C, after keeping for 1min, the temperature is quickly raised to 300°C, after being kept for 1...

Embodiment 3

[0039] A steering rod quenching process, comprising the following steps:

[0040] Step 1: After hot forging and stretching the steering rod, keep it warm at a temperature of at least 930°C for 30 minutes, and then lower the temperature in steps, the first time the temperature is 930-830°C, and the second time is 2 minutes later, the temperature is 830-730°C After 2 minutes, the third temperature drop is 730-630°C, after 2 minutes, the fourth temperature drop is 630-530°C, after 2 minutes, the fifth temperature drop is 530-430°C, after 2 minutes, the sixth temperature drop is 430-330°C, after 2 minutes, the seventh time Cool down to 330-230°C, the eighth time to cool down to 230-130°C after 2 minutes, and the ninth time to normal temperature after 2 minutes;

[0041] Step 2: Then heat treatment will be carried out, using stepwise heating, the first time the temperature is raised to 140°C, after keeping for 1min, the temperature is quickly raised to 300°C, after being kept for 1...

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Abstract

The invention discloses a steering rod quenching process. The process comprises the steps that 1, a steering rod is subjected to hot forging and stretched, the temperature is preserved for at least 930 DEG C for 30min, and cascade cooling is carried out; 2, heating treatment is carried out, cascade heating is carried out, the temperature is increased to 925-935 DEG C, and preserved for 2-3h; 3, primary quenching is carried out, the temperature is reduced to 200-300 DEG C, the steering rod is taken out for heat preservation, corrected and stretched, and the steering rod is heated to 500-580 DEGC; 4 secondary quenching is carried out, the temperature is reduced to 100-150 DEG C, and the steering rod is heated to 200-250 DEG C; and 5, the steering rod is cooled in a quenching groove to normal temperature, and quenching of the steering rod is finished. The steering rod obtained by means of the quenching process is high in Rockwell hardness, stable in internal stress, good in deformation resistance and wear resistance and greatly improved in finished product quality.

Description

technical field [0001] The invention relates to the technical field of steering rod quenching, in particular to a steering rod quenching process. Background technique [0002] The steering rod is an important part in the steering mechanism of the car, which directly affects the stability of the car's handling, the safety of running and the service life of the tires. [0003] In reality, sometimes the steering rod breaks, which poses a great safety hazard, and the quenching process is closely related to the quality of the steering rod. The steering rod made by the traditional quenching process has average hardness, insufficient internal stress and deformation resistance. And wear resistance is relatively poor, may cause the steering rod to appear abnormal, therefore, urgently need a kind of improved technology to solve this problem that exists in the prior art. Contents of the invention [0004] The purpose of the present invention is to provide a steering rod quenching pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D1/63C21D8/00C21D9/00
CPCC21D1/18C21D1/63C21D8/00C21D9/0068
Inventor 叶应安
Owner 十堰昌昊工贸有限公司
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