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A method for stress-relief treatment of a bracket

A treatment method and stress-relieving technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems of easy deformation, easy deformation, and low product qualification rate of brackets, and achieve the effect of improving production quality and reducing deformation.

Active Publication Date: 2017-06-23
JINGJI ELECTRONICS NANTONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the bracket is easily deformed during processing, the size cannot be stably controlled, and the product qualification rate is low
There is no heat treatment for stress relief in the product processing process, which leads to easy deformation during processing, unstable size control, and low product qualification rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0021] A method for stent stress relief, comprising the steps of:

[0022] (1) Rough machining of A datum plane: process into a 5.42 step surface, and leave a margin of 0.4-0.5 mm on one side in the X, Y, and Z directions, and prepare two Ф2 positioning pin holes;

[0023] (2) Rough machining of the B datum plane: machining into 4X7.26 steps, 2X12.75 steps; and leaving a margin of 0.4-0.5mm on one side in the X, Y, and Z directions;

[0024] (3) Heat treatment stress relief processing: place the rough processed product in a heat treatment furnace, adjust the temperature to 250-300°C, keep it warm for 8 hours, and then cool with the furnace;

[0025] (4) Finishing: machining 16XФ6.00 counterbore to size;

[0026] (5) Finishing of A reference surface: made into 5.42 step surface, 16XФ3 hole, 2XM3 threaded hole, 2XФ3.30+0.01 / +0.02 hole, Ф5.00+0.02 / -.00 hole, M5 threaded hole; where Ф3 Among the holes, two positioning holes are machined to Ф3.00+0.01 / +0.02mm, and the threaded ho...

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PUM

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Abstract

The invention discloses a bracket stress relief treatment method, comprising the following steps: rough machining of A reference plane; rough machining of B base plane; heat treatment stress relief machining; finishing; finishing of A base plane; finishing of B base plane Machining; Manual; Completion Inspection. The invention belongs to the machinery industry and is mainly used for removing the residual stress generated after machining, deformation processing, casting, forging, heat treatment and welding. Reduce deformation and improve production quality. And the hardness of the product before heat treatment: HRC: about 28 degrees, and the hardness after heat treatment: HRC: about 22 degrees.

Description

technical field [0001] The invention specifically relates to a stress relief treatment method for a bracket. Background technique [0002] At present, the bracket is easily deformed during processing, the size cannot be stably controlled, and the product qualification rate is low. There is no heat treatment for stress relief in the product processing process, which leads to easy deformation during processing, unstable size control, and low product qualification rate. Contents of the invention [0003] Purpose of the invention: The present invention provides a stress relief treatment method for a bracket. [0004] Technical solution: a method for stress relief treatment of a bracket, comprising the following steps: [0005] (1) Rough machining of A datum plane: process into a 5.42 step surface, and leave a margin of 0.4-0.5 mm on one side in the X, Y, and Z directions, and prepare two Ф2 positioning pin holes; [0006] (2) Rough machining of the B datum plane: machining ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00C21D1/30C21D9/00
Inventor 李斯林
Owner JINGJI ELECTRONICS NANTONG