Manufacture method of high wear resistance steel for knitting needle

A technology with high wear resistance and manufacturing method, which is applied in the field of steel for knitting machinery, can solve the problems of weak fatigue resistance of knitting needles and inability to adapt to high-strength knitting operations, and achieve improved microstructure indicators and improved Malleable, prevents the effect of cracking tendency

Active Publication Date: 2013-07-10
LANGSHA KNITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the knitting needles made of the components contained in T9A are not strong in fatigue resistance, and cannot be well adapted to the high-intensity operation of knitting.

Method used

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  • Manufacture method of high wear resistance steel for knitting needle
  • Manufacture method of high wear resistance steel for knitting needle
  • Manufacture method of high wear resistance steel for knitting needle

Examples

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Comparison scheme
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Embodiment 1

[0045] In this example, the composition and weight percentage of the cold work die steel are as follows:

[0046] C 1%, Si 0.2%, Mn 0.55%, Cr 0.2%, V 0.1%, Ni 0.1%, Nd 0.1%, P 0.02%, S 0.02%, and the balance is Fe and unavoidable impurities.

[0047] In the present embodiment, the process and steps of cold working die steel are as follows:

[0048] According to the ratio of the chemical components of the present invention, the steel ingot cast after smelting in the induction furnace is used as the consumable electrode and placed in the electroslag remelting device for electroslag remelting, and the liquid metal falls through the slag layer of the slag pool into the water-cooled crystallizer below, and then re-solidify into steel ingots; heat the above-mentioned steel ingots to a temperature range of 1000-1020 ° C for 4 hours and then forge; initial forging temperature: 900-930 ° C, final forging temperature ≥ 850 ° C. After forging, bending, flattening, and milling, the diame...

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Abstract

The invention relates to the field of steel for knitting machinery and specifically relates to a high wear resistance steel for knitting needle and a manufacture method thereof. The high wear resistance steel for knitting needle comprises, by weight, 0.8-1.2% of C, 0.1-0.4% of Si, 0.4-0.6% of Mn, 0.1-0.15% of Nb, 0.1-0.15% of V, 0.1-0.3% of Ni, 0.1-0.3% of Cr and the balance of Fe and inevitable impurities. A steel ingot casted after melting in an induction furnace is employed as a consumable electrode and placed in an electroslag remelting apparatus for electroslag remelting; liquid metal passes through a slag layer of a slag bath, falls to a water cooling crystallizer below and solidifies into a steel ingot again; the steel ingot is heated to 1000-1030 DEG C, insulated for 3-5 h and treated with forging, turning, flattening and milling and heat treatment, so as to obtain a cold working die steel with characteristics of high strength and toughness cooperation, high hardness and high wear resistance, etc.

Description

technical field [0001] The invention relates to the field of steel for knitting machines, in particular steel for knitting needles, a steel for knitting needles containing Ti with high wear resistance and a manufacturing method thereof. Background technique [0002] Knitting needles are important working parts of various knitting machines, and their quality level and level are reflected in both performance and life. As we all know, there has always been a big gap between domestic knitting needles and foreign advanced levels. In addition to low manufacturing precision, the raw materials used for knitting needles, heat treatment and surface treatment equipment, and various technologies are also important influencing factors. Relatively weak. With the rapid development of the knitting industry, many domestic knitting manufacturers have successively imported some knitting machines such as circular weft knitting machines, warp biasing machines, computerized flat knitting machine...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C22C38/48C22B9/18C21D8/00
CPCY02P10/25
Inventor翁荣弟刘爱莲柴红梅汪宏斌韦习成徐鹏飞
OwnerLANGSHA KNITTING