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Tool steel capable of adapting to large-deformation cold machining forming, preparation method of tool steel, sleeve and preparation method of sleeve

A large deformation, tool steel technology, applied in the field of tool steel processing, can solve the problems of high torque, high wear resistance, high life performance, cold heading and cold stamping performance, etc., to achieve low comprehensive processing cost, Effect of low spheroidizing annealing temperature and high wear resistance

Active Publication Date: 2021-12-03
SGIS SONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome that the existing tool steel does not have the cold heading and cold stamping performance of large deformation, and although the cold heading steel has a certain cold working deformation ability, its strength cannot meet the requirements of high torque, high wear resistance, Defects of sleeve tools with high life performance requirements, providing a tool steel suitable for large deformation cold forming and its preparation method and sleeve and its preparation method, the tool steel combines the high strength and cold heading of traditional tool steel The advantages of steel's good cold deformation ability can meet the production requirements of high torque, high wear resistance and high life performance socket tools

Method used

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  • Tool steel capable of adapting to large-deformation cold machining forming, preparation method of tool steel, sleeve and preparation method of sleeve
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  • Tool steel capable of adapting to large-deformation cold machining forming, preparation method of tool steel, sleeve and preparation method of sleeve

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preparation example Construction

[0059]The second aspect of the present invention provides the preparation method of the tool steel mentioned in the first aspect, the method includes: proportioning raw materials according to the required components, and sequentially smelting the raw materials, controlled rolling and controlled cold rolling, and cooling.

[0060] In the present invention, it can be understood that the "proportioning raw materials according to the required components" refers to the proportioning of raw materials according to the composition of the desired product tool steel. In the present invention, the raw materials are basically completely converted into the elemental components of the product tool steel, and a small amount of element loss can be supplemented by subsequent replenishment as needed, that is, the amount of each element of the raw material is the same as that of the product tool steel.

[0061] According to the present invention, preferably, the smelting includes converter smelti...

Embodiment 1

[0110] Preparation of tool steel:

[0111] According to the composition and ratio of raw materials shown in Table 1, smelting is carried out first. The specific smelting process is followed by converter smelting, LF furnace refining, RH furnace vacuum treatment and billet protection continuous casting. The corresponding process conditions are shown in Table 2. Among them The vacuum treatment process of the RH furnace is as follows: after cyclic treatment at a vacuum degree ≤ 0.267kPa for 5 minutes, ferro-titanium is added as needed (the amount of ferro-titanium is such that the total amount of each element meets the content of the corresponding elements in Table 1), and boron is added as needed after repressing Iron (the amount of ferroboron makes the total amount of each element meet the content of the corresponding elements in Table 1). The billet protection continuous casting process is as follows: using argon blowing protection and integral nozzle casting to avoid contact ...

Embodiment 2-10

[0115] Carry out according to the method of embodiment 1, difference is to carry out according to the process parameter shown in table 1-10.

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Abstract

The invention belongs to the technical field of tool steel machining, and specifically relates to tool steel capable of adapting to large-deformation cold machining forming, a preparation method of the tool steel, a sleeve and a preparation method of the sleeve. The tool steel comprises 0.28%-0.35% of C, not greater than 0.09% of Si, 0.65%-1% of Mn, 0.3%-0.55% of Cr, 0.1%-0.15% of V, 0.015%-0.04% of Ti, 0.0012%-0.004% of B, 0.02%-0.045% of Als, not greater than 0.025% of P, not greater than 0.015% of S, not greater than 0.1% of Ni, not greater than 0.1% of Cu and not greater than 0.009% of Mo, and the tool steel meets the conditions that (V + Ti + 10 * B) is greater than or equal to 0.13% and less than or equal to 0.22%, (Ni + Cu + Mo) is not greater than 0.17%, and Ti / N is equal to 2.2-6.5. The tool steel has high strength and large-deformation cold machining performance.

Description

technical field [0001] The invention belongs to the technical field of tool steel processing, and in particular relates to a tool steel capable of adapting to large deformation cold forming, a preparation method thereof, a sleeve and a preparation method thereof. Background technique [0002] Because tools require high hardness, strength and wear resistance, traditional tool steels generally use medium-high carbon steel with a carbon content greater than 0.50%, and on this basis, add a certain amount of chromium, manganese, molybdenum, and tungsten. and other alloying elements. Due to the high content of carbon, chromium, vanadium, manganese, and tungsten alloy elements in the traditional tool steel, the strength of the steel is very high, but the toughness is poor, and the cold processing performance of the steel such as cold drawing, cold heading, and cold stamping is very poor. Its cold deformation ability is very limited and cannot be manufactured by cold deformation pr...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/24C22C38/28C22C38/32C22C38/06C22C33/06C21D8/06C21D1/32C21D1/18B23P15/00
CPCC22C38/02C22C38/04C22C38/24C22C38/28C22C38/32C22C38/06C22C33/06C21D8/065C21D1/32C21D1/18B23P15/00C21D2211/009C21D2211/005
Inventor 刘金源岳峰张志明胡娟周楠刘春林郭峻宇经勇明吴孝勇张强郑晓明黄德伟
Owner SGIS SONGSHAN CO LTD
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