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An anti-deformation correction process for heat treatment of the arm body of an automobile brake adjusting arm

A technology for automobile brakes and adjusting arms, which is used in forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of less maintenance, increased difficulty, and substandard size, and achieves the effect of ensuring the correction effect and reducing the deformation error.

Active Publication Date: 2019-11-19
靖江市华信科技创业园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The brake adjustment arm plays an important role in the car braking process. A good car brake adjustment arm can ensure that the wheel has a constant brake clearance, the brake is safe and reliable, and the brake is fast and reliable; it reduces material consumption, has a long service life, and has fewer maintenance times. In the process of the automobile brake adjustment arm, 45 steel is used. Due to the small thickness of the body of the automobile brake adjustment arm, the forged forged parts will warp after heat treatment, and the size does not meet the standard, which is difficult to meet the requirements of machining. Production requirements, since the strength and hardness of the arm body of the brake adjustment arm are significantly improved after quenching, the difficulty of calibration is greatly increased and time-consuming and labor-intensive, the scrap rate is high, and the production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The heat treatment anti-deformation correction process of the arm body of the automobile brake adjustment arm described in this embodiment includes the following steps:

[0021] (1) Heat the arm body of the automobile brake adjustment arm to be calibrated at a rate of 60°C / h to 580°C,

[0022] (2) Put the workpiece heated in step (1) into the ice bucket for 4 seconds, take it out and put it in the mold suspended in the middle, start the 200-ton hydraulic pump, and apply pressure to the opposite direction of the deformation of the arm body of the automobile brake adjustment arm. With the pressure, the aluminum skin is placed in the middle, the deformation of the arm rod is 2mm, the distance of the hydraulic pump to press the workpiece at one time is 3mm, and the pressing speed of the hydraulic pump is 6cm / min;

[0023] (3) Quickly place the workpiece after step (2) on two 80mm flat plates, start a 100-ton hydraulic pump, apply pressure to the flat plates, and cool down n...

Embodiment 2

[0027] The heat treatment anti-deformation correction process of the arm body of the automobile brake adjustment arm described in this embodiment includes the following steps:

[0028] (1) Heat the arm body of the automobile brake adjustment arm to be calibrated to 620°C at a rate of 50°C / h,

[0029] (2) Put the workpiece heated in step (1) into the ice bucket for 3-4 seconds, take it out and put it in the mold suspended in the middle, start the 200-ton jack, and adjust the opposite direction of the deformation of the arm body rod to the car brake Apply pressure, with a copper sheet in the middle, the deformation of the arm body rod is 4mm, the jack applies pressure in stages, the first press is 3mm, and the second press is 2.7mm, and the pressing speed of the jack is 8cm / min;

[0030] (3) Quickly place the workpiece after step (2) on two 50mm flat plates, start a 100-ton jack, apply pressure to the flat plates, and let them cool down naturally.

[0031] Above-mentioned jack ...

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Abstract

The invention discloses an anti-deformation correcting process of a rod portion of an arm body of an automotive brake adjusting arm by thermal treatment. The process comprises the following steps: heating a workpiece to 580-620 DEG C, putting the workpiece in an ice bucket for 3-4s, taking out the workpiece and putting the workpiece in a mold, the middle of which is suspended, starting a hydraulicdevice, applying a pressure to the reverse direction of deformation of the rod portion of the arm body of the automotive brake adjusting arm, wherein the deformation is smaller than 3mm, the distanceof pressing the workpiece by the hydraulic device at one time exceeds 1 / 3 deformation of the horizontal plane, the deformation exceeds 3mm, the distance of pressing the workpiece by the hydraulic device at the last time exceeds 1 / 3 deformation of the horizontal plane in multiple pressures applied by the hydraulic device, and the pressing speed of the hydraulic device is 6-8cm / min; and quickly putting the workpiece in two plates, starting the 100-ton hydraulic device, applying pressures to the plates, and naturally cooling the workpiece. As a high-temperature tempering method is not adopted, the process disclosed by the invention is simple and practical, the deformation error of the workpiece caused by thermal treatment can be reduced remarkably, and the mechanical property of the workpiece is not reduced, and the correcting effect is guaranteed.

Description

technical field [0001] The invention belongs to the field of auto parts processing, and in particular relates to an anti-deformation correction process for heat treatment of an arm body of an auto brake adjustment arm. Background technique [0002] The brake adjustment arm plays an important role in the car braking process. A good car brake adjustment arm can ensure that the wheel has a constant brake clearance, the brake is safe and reliable, and the brake is fast and reliable; it reduces material consumption, has a long service life, and has fewer maintenance times. In the process of the automobile brake adjustment arm, 45 steel is used. Due to the small thickness of the body of the automobile brake adjustment arm, the forged forged parts will warp after heat treatment, and the size does not meet the standard, which is difficult to meet the requirements of machining. Production requirements, since the strength and hardness of the arm body of the brake adjustment arm are si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D3/10B21D37/16
CPCB21D3/10B21D37/16
Inventor 贾恒宏
Owner 靖江市华信科技创业园有限公司
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