Machining process of high-strength twisting spring

A processing technology and high-strength technology, which is applied in the field of spring processing to achieve high efficiency, good forming rate and good spring quality.

Inactive Publication Date: 2018-05-04
朱旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the springs assembled on high-speed trains and other large-scale mechanical equipment that need long-term high-load operation need to be able to withstand high-intensity loads. If the springs cannot withstand it, it will cause incalculable consequences

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The first step is to select the material, and the selected material is chrome vanadium steel.

[0038] In the second step, the coil spring, according to the prefabricated height, the outer diameter and the number of coils, the two ends of the steel wire blank are tightened, and the coil spring is wound into a cylindrical coil spring, and the coil coil number is 8 coils. The gap between the rings is ≤0.2mm;

[0039] The third step is aging treatment. In the aging treatment process, the temperature is controlled at 770° C. and the time is set for 8 hours.

[0040] The fourth step is to grind both ends of the spring, and use 0.5mm steel grit to grind the spring.

[0041] The fifth step is to correct the spring and correct its length and concentricity.

[0042] The sixth step, quenching, is heated in a salt bath furnace. During the quenching process, the quenching temperature should be controlled at 950°C.

[0043] The seventh step is tempering. During the tempering proc...

Embodiment 2

[0048] The first step is to select the material, and the selected material is chrome vanadium steel.

[0049] In the second step, the coil spring, according to the prefabricated height, the outer diameter and the number of coils, the two ends of the steel wire blank are tightened, and the coil spring is wound into a cylindrical coil spring, and the coil coil number is 8 coils. The gap between the rings is ≤0.2mm;

[0050] The third step is aging treatment. During the aging treatment, the temperature is controlled at 790° C. for 10 hours.

[0051] The fourth step is to grind both ends of the spring, and use 0.5mm steel grit to grind the spring.

[0052] The fifth step is to correct the spring and correct its length and concentricity.

[0053] The sixth step, quenching, is heated in a salt bath furnace. During the quenching process, the quenching temperature should be controlled at 1000°C.

[0054] The seventh step is tempering. During the tempering process, the tempering tem...

Embodiment 3

[0059] The first step is to select the material, and the selected material is chrome vanadium steel.

[0060] In the second step, the coil spring, according to the prefabricated height, the outer diameter and the number of coils, the two ends of the steel wire blank are tightened, and the coil spring is wound into a cylindrical coil spring, and the coil coil number is 8 coils. The gap between the rings is ≤0.2mm;

[0061] The third step is aging treatment. In the aging treatment process, the temperature is controlled at 810° C. for 12 hours.

[0062] The fourth step is to grind both ends of the spring, and use 0.5mm steel grit to grind the spring.

[0063] The fifth step is to correct the spring and correct its length and concentricity.

[0064] The sixth step, quenching, is heated in a salt bath furnace. During the quenching process, the quenching temperature should be controlled at 1100°C.

[0065] The seventh step is tempering. During the tempering process, the tempering...

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PUM

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Abstract

The invention discloses a machining process of a high-strength twisting spring, and belongs to the field of spring machining. The machining process of the high-strength twisting spring is stable and reliable and comprises following procedures that firstly, materials are selected; secondly, the spring is wound, and according to the prefabricated height, the outer diameter and the turn number, the two ends of a steel wire blank are tightened, and are wound into the cylindrical spiral spring; thirdly, aging treatment is carried out; fourthly, the two ends of the spring are ground to be flat; fifthly, the spring is corrected; sixthly, quenching is carried out; seventhly, tempering is carried out; eighthly, flaw detection is carried out; ninthly, shot blasting is carried out; tenthly, fatigue life test is carried out. The process has the beneficial effects that the forming rate effect is good, the efficiency is high, the quality of the formed spring is good, and under the condition that high strength negative pressure is borne, the good performance can be still kept.

Description

technical field [0001] The invention belongs to the field of spring processing, and in particular relates to a processing technology for high-strength twisted springs. Background technique [0002] Spring is a widely used elastic element. Whether it is daily life or many other high-tech fields, the application of springs is involved. Different fields have different requirements for springs. For example, springs used in cylinder exhaust branch pipes and header pipes, because the combustion of fuel oil in the cylinder makes the temperature of the exhaust pipe very high, so springs with sufficient high temperature resistance must be required to play an effective role. In addition, the springs assembled on high-speed trains and other large-scale mechanical equipment that need long-term high-load operation need to be able to withstand high-intensity loads. If the springs cannot withstand it, it will cause incalculable consequences. Therefore, in the processing technology of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F3/02B21F35/00C21D9/02B23P15/00
CPCB21F3/02B21F35/00B23P15/00C21D9/02
Inventor 朱旭
Owner 朱旭
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