Carbon based composited material helical spring and production method thereof

Abstract

The invention discloses a carbon based composited material helical spring production method. Z-direction carbon fibers are introduced into the helical spring from an axial direction, which is perpendicular to the helical spring. The production method is characterized by comprising the following steps: (1) blank preparation: winding a carbon fiber beam or carbon fiber cloth around a core mould along the helical line direction of a spring, wherein the moving direction of continuous long fibers of the carbon fiber beam or carbon fiber cloth is the same as the helical line direction of the spring; then winding a carbon fiber net tire around the core mould, carrying out needling along the radial direction of the core mould, and repeating the abovementioned process to prepare a carbon fiber spring preform; (2) density increasing; and (3) mechanical processing. The ratio of the number of continuous carbon fiber along the helical line direction of the spring to the number of the Z-direction carbon fibers is 1:0.01-0.4. The elastic constant of the helical spring is 0.5 to 10 kg / mm. During the blank making process, Z-direction fibers are introduced into the helical spring from an axial direction perpendicular to the helical spring, the interlayer bonding is good, and thus the mechanical properties of the prepared carbon based composited material helical spring are good.

Description

technical field [0001] The invention relates to a carbon-based composite material, in particular to a carbon-based composite coil spring and a production method thereof, in particular to a carbon-based composite coil spring in which Z-direction carbon fibers are introduced in a direction perpendicular to the axis of the coil spring and production methods. Background technique [0002] With the development of science and technology, many high-tech fields have increasingly stringent requirements on the performance of springs. Ordinary metal springs can no longer meet the requirements of cutting-edge or special fields such as new energy, national defense, chemical industry, aerospace, and semiconductors. In many designs It is required that the spring can work in a high temperature environment or a corrosive environment without causing metal contamination. For example, in the welding process of high-temperature alloys, the brazing temperature of nickel-based solder is usually a...

AI Technical Summary

Problems solved by technology

However, during the winding process of the preformed strip, the helical path close to the central axis is short, and the helical path away from the central axis is long. Therefore, different layers will be laid out along their respective paths, which will inevitably generate stress and cause delamination. And when winding, there is no Z-direction carbon fiber in the direction perpendicular to the axis of the spring, which ultimately leads to poor overall structural capacity and low rigidity of the spring

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