Knitting needle of knitting machine and preparation method of knitting needle of knitting machine

Abstract

The invention relates to the field of textiles, the field of textile machinery and the field of coating and provides a knitting needle of a knitting machine and a preparation method of the knitting needle of the knitting machine. The knitting needle comprises a knitting needle body and ta-C on the surface of the knitting needle, and the surface of the knitting needle is coated with ta-C through FCVA. By the technical scheme, the surface of the knitting needle is free of chromium, and a whole knitting process is free of chromium; the knitting needle has advantages of ultrahigh hardness, ultralow friction coefficient, ultrahigh wear resistance, excellent resistance to heat, oxidation and acids, diffusion inhibition, appearance attractive improvement and the like, and performance indexes arestable; the service life of the knitting needle is remarkably prolonged, performances of the knitting needle are substantially improved, machine stop time is reduced, a cycle period is shortened, production efficiency is improved, and production cost is reduced.

Description

technical field [0001] The present invention relates to the fields of textiles, textile machinery and coating, in particular to a knitting needle of a knitting machine and a preparation method thereof. The surface of the knitting needle of a knitting machine is coated with ta-C by using FCVA technology, thereby obtaining ta-C coated on the surface. Needles of a knitting machine. Background technique [0002] The knitting needle of the knitting machine is a steel needle body, and the hardness of the steel used is about 504hv~645hv, which is very easy to wear. In order to improve the wear resistance of knitting needles, the current international general technology is to use electroplating hard chrome surface treatment technology to form a hard chrome protective layer on the surface of steel knitting needles. The hardness of hard chrome is 800hv, and the friction coefficient is 0.7-1.0. It has higher hardness and lower friction coefficient, which can increase the wear resistan...

AI Technical Summary

Problems solved by technology

[0003] However, with the increasing awareness of environmental protection of governments, industries and the public, the use of hard chrome plating technology for surface treatment of knitting needles has gradually revealed its hidden dangers in environmental protection

[0004] The surface treatment process of knitting needles with electroplating hard chrome technology, and the hard chrome protective layer on the surface of knitting needles after chrome plating all imply the risk of chromium pollution. During the knitting production process, the trace diffusion of chromium is attached to the fabric, causing harm to the human body. health threat

[0005] Secondly, due to the poor controllability of the coating thickness by electroplating hard chromium technology, it is easy to cause uneven coating thickness and affect the accuracy of knitting needles

[0006] Furthermore, due to the hardness of electroplated hard chromium and the limitation of friction coefficient, the performance of knitting needles cannot meet the requirements, and the performance improvement of knitting machine equipment is limited. balance, in order to maintain the normal operation of the equipment and a reasonable service life, it is difficult to improve the operating speed and production efficiency of the knitting machine

In other words, it is technically easy to increase the rotational speed, but the problems of high wear of knitting needles caused by increased rotational speed and instability due to frictional heating affecting thermal expansion cannot be solved, and technically face a bottleneck