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High wear resistance steel for knitting needle and manufacture method thereof

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 cannot be well adapted to high-strength operation of knitting, so as to improve microstructure indicators, improve Forgeable shape, the effect of preventing the tendency to crack

Active Publication Date: 2012-03-21
LANGSHA KNITTING
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  • 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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  • High wear resistance steel for knitting needle and manufacture method thereof
  • High wear resistance steel for knitting needle and manufacture method thereof
  • High wear resistance steel for knitting needle and manufacture method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] In this example, the composition and weight percentage of cold work die steel are as follows:

[0045] 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%, the balance being Fe and inevitable impurities.

[0046] In this embodiment, the process and steps of cold working die steel are as follows:

[0047] According to the chemical composition ratio of the present invention, a steel ingot cast after melting in an induction furnace is used as a consumable electrode and placed in an electroslag remelting device for electroslag remelting, and the liquid metal falls through the slag layer of the slag pool In the following water-cooled crystallizer, it is re-solidified into steel ingots; the above steel ingots are heated to a temperature range of 1000~1020℃ for 4 hours before forging processing; initial forging temperature: 900~930℃, final forging temperature ≥850℃. After forging, bending, flattening, and milling, the diameter is 0.38mm; the forged steel is ...

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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 machinery, in particular to steel for knitting needles, a kind of 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 accuracy, the raw materials used in 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 weft knitting machines, warp knitting machines, computerized flat knitting machines, ...

Claims

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Application Information

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Patent Type & Authority Applications(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
Owner LANGSHA KNITTING
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