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Method for manufacturing fiber reinforced plastic plate type spring

A fiber reinforced plastic, leaf spring technology, applied in the coating and other directions, can solve the problems of low spring fiber content, small spring adaptability, uneven resin distribution, etc., and achieve the effects of small deformation, improved efficiency, and uniform fiber distribution.

Active Publication Date: 2015-04-22
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fiber-reinforced plastic leaf springs prepared by resin transfer molding process have low fiber content and large porosity, and uneven resin distribution and wrinkles are prone to occur during molding, which affects the performance of leaf springs
However, fiber-reinforced plastic leaf springs prepared by winding molding have low adaptability, cannot prepare leaf springs of any structural form, and the forming process is complicated and the technical requirements are high.

Method used

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  • Method for manufacturing fiber reinforced plastic plate type spring
  • Method for manufacturing fiber reinforced plastic plate type spring

Examples

Experimental program
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Embodiment 1

[0071] A method for manufacturing a fiber-reinforced plastic leaf spring, at least including: prepreg, cutting, layering, thermoforming, and post-treatment processes (see attached figure 2 shown). The specific production steps are as follows:

[0072] Prepreg: The matrix of unidirectional or bidirectional fiber prepreg is any one of polyester, vinyl resin and epoxy resin, and the reinforcing fiber is any one or several of glass fiber, carbon fiber and organic fiber. where unidirectional 0 o The fiber mass fraction in the fiber direction prepreg is 50%-80%, and the fiber surface density is 800g / m 2 -2500g / m 2 ;Two-way fiber prepreg is ±45 o Fiber direction or 0° / 90° fiber direction prepreg, fiber mass fraction 50%-80%, fiber surface density 400g / m 2 -2500g / m 2 . The fibers in the above prepreg are continuous without being cut.

[0073] Cutting process: 0 o Fiber direction prepreg and 0° / 90° fiber direction prepreg along 0 o The fiber direction is cut, and 0 o Fiber ...

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Abstract

The invention relates to a method for manufacturing a fiber reinforced plastic plate type spring. The method comprises the following steps of prepreg preparing, clipping, layering, heat forming and post-processing. The implementation process includes clipping a unidirectional fiber prepreg and a bidirectional fiber prepreg into needed shapes, and attaching the clipped unidirectional fiber prepreg and the bidirectional fiber prepreg on a die to be manufactured into a preformed body according to a set layering mode. The preformed body can be one layered through one or more of the unidirectional fiber prepreg and the bidirectional fiber prepreg. The preformed body can be manufactured into a needed composite material plate type spring through lamination forming, post heat treatment and mechanical processing. Heat forming of plate springs is controlled through temperature, time and pressure. The composite material plate type spring has the advantages of being high in strength, light in quality, fatigue resistant, good in heat stability and small in deformation.

Description

technical field [0001] The invention relates to a manufacturing method of components in a vehicle suspension system, in particular to a low-cost manufacturing method of a fiber-reinforced plastic plate spring, which is mainly used for making composite material leaf springs for automobiles. Background technique [0002] Leaf springs are mostly used for shock absorption of automobile suspensions, and are widely used in various vehicles, such as commercial vehicles (buses, trucks, etc.), off-road vehicles and rail vehicles. [0003] Leaf springs made of spring steel have been known for a long time. The manufacturing cost of the spring steel leaf spring is relatively low, and it has a good vehicle shock absorption effect, but the leaf spring is heavy and has poor safety fracture (brittle fracture), which directly leads to an increase in fuel consumption and a decrease in safety performance. [0004] Also well known are leaf springs made of fiber-reinforced plastics. Since the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C71/02B29B15/10
Inventor 吴辉李再轲曾竟成姜其斌王甲世王春花
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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