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Low-alloy tool steel

A tool steel and low alloy technology, applied in the field of low alloy tool steel, can solve the problem of high material cost and achieve the effect of low material cost

Inactive Publication Date: 2009-11-25
JIANGSU FEIDA TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-speed steel has high heat treatment hardness and good red hardness characteristics. It is a high-alloy tool steel material mainly used for machine tool cutting tools. Due to the content of some precious metals such as W, MO, and V in ordinary high-speed steel components Higher (the total amount of these three components usually exceeds 10%), so the material cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Example: The alloy tool steel material of the composition in Table 1 was produced by a conventional smelting method, and 5 steel rods of Ф10*10 and Ф20*10 were made respectively, and the following heat treatment and testing were carried out:

[0017] Table 1(%)

[0018]

[0019] A. Ф10*10 steel bar: Preheat at 860°C for 5 minutes, heat at 1175°C for 2 and a half minutes, quench grain number 8#, cool at 605°C for 2 minutes, temper at 547°C for 1 hour*3 times, see hardness test Table 2 below, the hardness detected by the red hardness test (600°C for 3 hours) is shown in Table 2 below.

[0020] Table 2 (HRC)

[0021] 1#

[0022] B. Ф20*10 steel bar: Preheat at 860°C for 7 minutes, heat at 1180°C for 3 and a half minutes, quench grain number 7.5#, cool at 590°C for 3 minutes, temper at 547°C for 1 hour*3 times, see hardness test Table 3 below, see Table 3 below for the hardness detected by the red hardness test (600°C for 3 hours).

[0023] Table ...

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PUM

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Abstract

The invention relates to a low-alloy tool steel, which comprises the following components by weight percentage: 0.96 to 1.04 percent of C, 1.00 to 1.40 percent of Si, 0.30 to 0.40 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.02 percent of S, 4.00 to 4.50 percent of Cr, 1.20 to 1.45 percent of W, 0.50 to 0.70 percent of Mo, 0.50 to 0.70 percent of V, and the balance of Fe and impurities generated by preparation. The materials of the invention can meet the using requirements of cutting tools of general high-speed steel in most of application occasions; and meanwhile, the contents of noble metals of W, MO and V are greatly lower than the content of the general high-speed steel, so the cost of the material is lower.

Description

technical field [0001] The invention relates to a low alloy tool steel. Background technique [0002] High-speed steel has high heat treatment hardness and good red hardness characteristics. It is a high-alloy tool steel material mainly used for machine tool cutting tools. Due to the content of some precious metals such as W, MO, and V in ordinary high-speed steel components Higher (the total amount of these three components usually exceeds 10%), and thus higher material costs. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a low-alloy tool steel with low material cost, high heat treatment hardness and good red hardness. [0004] The composition of the low alloy tool steel of the present invention is calculated by weight percentage, [0005] C 0.96~1.04 [0006] Si 1.00~1.40 [0007] Mn 0.30~0.40 [0008] P≤0.03 [0009] S≤0.02 [0010] Cr 4.00~4.50 [0011] W 1.20~1.45 [0012] Mo 0.50~0.70 [0013] V...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/24
Inventor 刘道弟张建华
Owner JIANGSU FEIDA TOOLS CO LTD