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Linear guide rail production process

A production process and technology of linear guide rails, applied in the field of linear guide rail production technology, can solve problems affecting production and product quality, and achieve the effects of improving wear resistance, uniformity and stability

Pending Publication Date: 2021-12-24
浙江建鑫型钢科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In modern mechanical equipment, especially the size of machine tool guide rails is long, and the effective thickness exceeds the critical diameter of oil quenching, which makes it difficult to control the distortion, cracking and uneven hardness of guide rails after heat treatment and quenching. For a long time, quenching according to conventional processes , has not been able to solve this problem very well, seriously affecting the production and product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A linear guide rail production process, comprising

[0037] S1: Blank preparation;

[0038] S2: Tie the head;

[0039] S3: pickling after shot blasting;

[0040] S4: The first cold rolling forming;

[0041] S5: The second cold rolling forming;

[0042] S6: The third cold rolling forming;

[0043] S7: the first straightening;

[0044] S8: Annealing, set the furnace temperature to 800±10°C, keep it warm for 3-4h; then cool it down to 720±10°C at a rate of 30°C / h, keep it warm for 4-6h; ;

[0045] S9: shot blasting;

[0046] S10: phosphorus saponification;

[0047] S11: pulling for the first time;

[0048] S12: shot blasting;

[0049] S13: phosphorus saponification;

[0050] S14: second pulling;

[0051] S15: cut to length;

[0052] S16: straightening;

[0053] S17: Stress-relief annealing, furnace loading at room temperature, set temperature at 580±10°C, after holding for 2-4 hours, cool down to below 500°C with the furnace, and air-cool the workpiece out of...

Embodiment 2

[0061] A linear guide rail production process, comprising

[0062] S1: Blank preparation;

[0063] S2: Tie the head;

[0064] S3: pickling after shot blasting;

[0065] S4: The first cold rolling forming;

[0066] S5: The second cold rolling forming;

[0067] S6: The third cold rolling forming;

[0068] S7: the first straightening;

[0069] S8: Annealing, set the furnace temperature to 800±10°C, keep it warm for 3-4h; then cool it down to 720±10°C at a rate of 30°C / h, keep it warm for 4-6h; ;

[0070] S9: shot blasting;

[0071] S10: phosphorus saponification;

[0072] S11: pulling for the first time;

[0073] S12: shot blasting;

[0074] S13: phosphorus saponification;

[0075] S14: second pulling;

[0076] S15: Cutting to length; followed by aging stress relief treatment, using a 300°C low-temperature oven, putting the guide rails into a controlled temperature and keeping it at 140-160°C for 8-20h, and then air cooling out of the oven. The purpose is to release ...

Embodiment 3

[0086] A linear guide rail production process, comprising

[0087] S1: Blank preparation;

[0088] S2: Tie the head;

[0089] S3: pickling after shot blasting;

[0090] S4: The first cold rolling forming;

[0091] S5: The second cold rolling forming;

[0092] S6: The third cold rolling forming;

[0093] S7: the first straightening;

[0094] S8: Quenching and tempering treatment, preheat the guide rail at 550°C for 30min-850°C, hold for 25min and then oil quench; then temper at 650°C for 120min and then air cool; the guide rail will be deformed severely during the cold rolling process, resulting in The internal grains are broken, so that the carbide and fine-grained sorbite structure are prone to uneven distribution inside the guide rail; through the quenching and tempering treatment of this step, uniformly distributed fine carbide and fine-grained sorbite structure are obtained, Distortion due to volume change during quenching is reduced.

[0095] S9: shot blasting;

...

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PUM

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Abstract

The invention discloses a linear guide rail production process which comprises the steps of performing blank preparation, performing head tying, performing pickling after shot blasting, performing first cold rolling forming, performing second cold rolling forming, performing third cold rolling forming, performing first straightening, performing annealing, setting a furnace temperature to 800+ / -10 DEG C, keeping the temperature for 3-4 hours, then lowering the temperature to 720+ / -10 DEG C at a rate of 30 DEG C / h, keeping the temperature for 4-6 hours, then performing furnace cooling to below 500 DEG C, performing discharging and air cooling, performing shot blasting, performing phosphorus saponification, performing first drawing, performing shot blasting, performing phosphorus saponification, performing second drawing, performing fixed-length cutting, performing straightening, performing stress relief annealing, performing tempering in a low-temperature oven at 300 DEG C, controlling the temperature at 180+ / -20 DEG C, keeping the temperature for 8 hours, performing discharging and air cooling, performing straightening, and checking. Compared with traditional heat treatment quenching, a heat treatment process of the application is capable of well controlling the hardness of a guide rail, and greatly improving the uniformity of hardness distribution of the guide rail.

Description

technical field [0001] The invention belongs to the technical field of guide rail processing technology, and in particular relates to a linear guide rail production technology. Background technique [0002] As long as the failure mode of the linear rolling guide is contact fatigue damage and plastic deformation under heavy pressure, the guide rail as a whole must have good comprehensive mechanical properties and good dimensional stability against temperature changes. It has high hardness, high strength and high wear resistance, because we must achieve the required performance through reasonable heat treatment process. In modern mechanical equipment, especially the size of machine tool guide rails is long, and the effective thickness exceeds the critical diameter of oil quenching, which makes it difficult to control the distortion, cracking and uneven hardness of guide rails after heat treatment and quenching. For a long time, quenching according to conventional processes , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/26C21D1/30C21D1/18C21D6/04B23P15/00
CPCC21D9/0068C21D1/26C21D1/30C21D1/18C21D6/04B23P15/00
Inventor 郑建军
Owner 浙江建鑫型钢科技股份有限公司
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