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Turbocharging executing device spring processing process

A technology of turbocharging and processing technology, applied in the direction of wire processing, wire manufacturing of springs, and other household appliances, etc., can solve the problems of short service life of springs, and achieve the effect of improving fatigue life, good plasticity, and ultra-high-strength plasticity.

Active Publication Date: 2015-03-11
常宁市福宏弹簧有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Springs must be used in turbocharged actuators. This kind of spring needs to reciprocate at a high temperature of 240 degrees for a long time, and the spring produced by the existing manufacturing process has a relatively short service life in such an environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The first step is to select qualified 55CrSi spring steel;

[0029] The second step, coil spring: wind the steel wire blank into a cylindrical coil spring according to the prefabricated height, outer diameter and number of coils. The number of coil coils is 6 coils. The gap between them is about 0.98mm, the inner diameter of the spring coil body is 28.8mm, and the outer diameter is 32mm;

[0030] The third step, tempering: put the spring into the tempering furnace for stress relief tempering, the tempering temperature is 300 ° C, and the time is 60 minutes;

[0031] The fourth step, grinding spring: Grinding and correcting twice on the M7745K-9S CNC spring grinding machine first, grinding the end face, deburring, setting the spring grinding temperature at 220°C, cutting and grinding thickness ≤ 0.1mm / time;

[0032] The fifth step, flaw detection: use ultrasonic surface flaw detection technology to sort the springs with scratches and scratches on the surface during mach...

Embodiment 2

[0041] The first step is to select qualified 55CrSi spring steel;

[0042] The second step, coil spring: wind the steel wire blank into a cylindrical coil spring according to the prefabricated height, outer diameter and number of coils. The number of coil coils is 6 coils. The gap between them is about 0.98mm, the inner diameter of the spring coil body is 28.8mm, and the outer diameter is 32mm;

[0043] The third step, tempering: put the spring into the tempering furnace for stress relief tempering, the tempering temperature is 500 ° C, and the time is 30 minutes;

[0044] The fourth step, grinding spring: Grinding and correcting twice on the M7745K-9S CNC spring grinding machine first, grinding the end face, deburring, setting the spring grinding temperature at 220°C, cutting and grinding thickness ≤ 0.1mm / time;

[0045] The fifth step, flaw detection: use ultrasonic surface flaw detection technology to sort the springs with scratches and scratches on the surface during mach...

Embodiment 3

[0054] The first step is to select qualified 55CrSi spring steel;

[0055] The second step, coil spring: wind the steel wire blank into a cylindrical coil spring according to the prefabricated height, outer diameter and number of coils. The number of coil coils is 6 coils. The gap between them is about 0.98mm, the inner diameter of the spring coil body is 28.8mm, and the outer diameter is 32mm;

[0056] The third step, tempering: put the spring into the tempering furnace for stress relief tempering, the tempering temperature is 400 ° C, and the time is 45 minutes;

[0057] The fourth step, grinding spring: Grinding and correcting twice on the M7745K-9S CNC spring grinding machine first, grinding the end face, deburring, setting the spring grinding temperature at 220°C, cutting and grinding thickness ≤ 0.1mm / time;

[0058] The fifth step, flaw detection: use ultrasonic surface flaw detection technology to sort the springs with scratches and scratches on the surface during mach...

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Abstract

The invention discloses a turbocharging executing device spring processing process, which is characterized by comprising the following steps of 1, material selection; 2, spring coiling: a steel wire blank is coiled into a cylindrical spiral spring according to the prefabricated height, outer diameter and ring number; 3, tempering: the spring is placed into a temper furnace for distressing temper; 4, spring grinding: the two end surfaces of the spring are flatly ground; 5, flaw detection; 6, shot blasting: coarse and fine twice shot blasting are adopted, the diameter of the first shot blasting is greater than the diameter and the intensity of the second shot blasting; 7, secondary tempering; 8, standing processing; 9, heat forming processing; 10, fine grinding; 11, sorting; 12, packaging. Through special heat treatment, the produced high-quality spring has the hardness being 45-50HRC, the full-stroke reciprocating movement in high-temperature environment being 280 DEG C can reach three hundred thousand times, and the elasticity loss rate does not exceed 40 percent.

Description

technical field [0001] The invention relates to a spring processing technology, in particular to a spring processing technology used in a turbocharged actuator. Background technique [0002] The turbocharger uses the inertial momentum of the exhaust gas discharged from the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, which presses the air sent by the air filter pipe to pressurize it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the impeller compresses more air into the cylinder, and the pressure and density of the air increase to burn more fuel. Increase the fuel volume and adjust the engine speed accordingly. , the output power of the engine can be increased. The turbocharger actuator is used to prevent the supercharging pressure of the turbocharger from being too high. Through electronic control, the waste gas valve is opened,...

Claims

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Application Information

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IPC IPC(8): B23P15/00B21F35/00
CPCB21F35/00B23P15/00
Inventor 罗舒壬
Owner 常宁市福宏弹簧有限公司
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