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High-efficiency wave spring setting tempering technology

A wave spring and process technology, applied in the field of wave spring shaping and tempering technology, can solve problems such as complex stress, low production efficiency, and wave spring deformation

Inactive Publication Date: 2017-04-05
沈阳斯普瑞机械加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although when the hard steel wire is tempered, the tempering shrinkage of the diameter of the circular steel wire spring can be calculated according to the empirical formula, but because the wave spring is a steel wire with a rectangular cross section, and the stress generated by the waveform change is more complicated, and because different batches Due to the influence of many factors such as chemical element content, strength and structural stress difference of secondary raw materials, the wave spring will be more or less deformed after tempering, and manual shaping is required, resulting in low production efficiency and is not conducive to mass production. Production

Method used

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  • High-efficiency wave spring setting tempering technology
  • High-efficiency wave spring setting tempering technology
  • High-efficiency wave spring setting tempering technology

Examples

Experimental program
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Effect test

Embodiment

[0017] Implementation example: The process steps of wave spring shaping and tempering are as follows:

[0018] 1) Place the wave spring formed by pressing 65Mn cold-drawn spring steel wire into the mold A1 in a uniform position and direction (the mold structure is as follows: figure 1 shown);

[0019] 2) Put the mold B2 into the mold A1 filled with wave springs, press the wave spring tightly through the combined mold A1 and mold B2 under the pressure of not less than 8MPa on the hydraulic press and lock the combined mold die;

[0020] 3) Put the locked mold into the air tempering furnace and preheat at 380°C for 60 minutes;

[0021] 4) Take out the combined mold, put the combined mold on the hydraulic press again, and press and lock it with temperature at not less than 10MPa;

[0022] 5) Put the combined mold into the tempering furnace for secondary heating, keep it warm for 90 minutes at 420°C, and then take it out of the furnace and air cool to room temperature.

[0023]...

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Abstract

The invention aims to provide a high-efficiency wave spring setting tempering technology which can improve the production efficiency while guaranteeing the geometric dimensions and hardness of springs. The concrete technical scheme is as follows: placing compression-molded wave springs in a mould, compressing the wave springs, locking a combined mould, placing the combined mould in a tempering furnace, preheating the combined mould for 60 min at 380 DEG C, taking out the combined mould, and placing the combined mould on a hydraulic machine to further compress and lock the combined mould; and placing the combined mould in the tempering furnace again to reheat the combined mould to 420 DEG C, performing heat preservation for 90 min, taking the combined mould out of the furnace and cooling the combined mould to room temperature.

Description

technical field [0001] The invention relates to wave springs, and in particular provides a shaping and tempering process for wave springs. Background technique [0002] Wave spring, referred to as wave spring, is a thin ring-shaped elastic metal element composed of several crests and troughs. After heat treatment in a specific method and according to specific conditions, the hardness is generally controlled between HRC40-50, so that the spring has good elasticity. It is usually used in occasions where the load and deformation are not large, the spring stiffness is small and the axial preload needs to be applied. The spring is widely used in motors, textile machinery, hydraulic equipment, automobiles and other industries. [0003] In the production process of using hard steel wire to process wave springs, due to the deformation stress of wave springs after the profiling process, it must be tempered to eliminate stress and shape. In general, in order to avoid reducing the str...

Claims

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Application Information

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IPC IPC(8): C21D9/02
Inventor 于光晖
Owner 沈阳斯普瑞机械加工有限公司
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