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Guipure furnace knitting needle brightness quench technics parameter determining method

A technology of process parameters and mesh belt furnace, applied in the field of heat treatment, can solve the problems of unstable quality and low performance of knitting needles

Inactive Publication Date: 2007-07-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual investigation found that such problems generally exist in domestic enterprises, resulting in the following: the quality of knitting needles produced is unstable and the performance is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Guipure furnace knitting needle brightness quench technics parameter determining method
  • Guipure furnace knitting needle brightness quench technics parameter determining method
  • Guipure furnace knitting needle brightness quench technics parameter determining method

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The present invention will be further described below by taking SK-5 steel as the knitting needle quenching process as an example.

[0056] 1. Determination of lysing medium and its dosage

[0057] The bright quenching of knitting needles is to form a protective atmosphere inside the furnace through the cracking of organic substances, so as to ensure that the heat-treated parts are not exposed to oxidative atmosphere during the heating process, and prevent the formation of scale or surface decarburization. The mesh belt furnace is a continuous production equipment without a sealed fixed furnace door. At the outlet end of the knitting needle, the seal is realized by quenching oil groove. At the inlet end of the knitting needle, the sealing is achieved by burning the pyrolysis gas to form a sealing fire curtain.

[0058] In this embodiment, industrial alcohol is used as the cracking medium, which is dropped into the cracking furnace for cracking, and the decomposed atmo...

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Abstract

A method for defining the web-belt furnace needle bright quenching process parameters comprises: the knitting needles are arranged thickly on the web belt and are served as a thin plate in the quenching process, the thin plate and the web belt are put together as a whole with different hot physical property, a heat-conduction equation with web belt furnace heating character is established, and temperature field distribution in the process of the needle quenching is determined by using computer interpolation method and finite difference method.

Description

Technical field: [0001] The invention relates to knitting needles, and relates to heat treatment under the condition of continuous production of knitting needles, in particular to a method for determining bright quenching process parameters of knitting needles in a mesh belt furnace by computer simulation. Background technique: [0002] At present, knitting needles are mainly made of high-carbon steel. In order to prevent oxidation and decarburization on the surface of knitting needles, heat treatment in vacuum or protective atmosphere is required. The main equipment for quenching knitting needles is a mesh belt type protective atmosphere resistance furnace, hereinafter referred to as mesh belt furnace. The atmosphere 9 ensures that the knitting needles 2 are not exposed to an oxidative atmosphere during the heating process, so as to prevent the formation of scale or surface decarburization. The mesh belt furnace is a continuous production equipment without a sealed fixed f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/26
Inventor 朱世根丁浩陈海燕季诚昌
Owner DONGHUA UNIV