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General cold work tool steel

A cold-worked tool steel, a general-purpose technology, applied in the field of tool steel in the field of metal material technology, can solve the problem that the wear resistance needs to be improved, and achieve the effect of good comprehensive mechanical properties and good hardness

Inactive Publication Date: 2008-08-27
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be considered that this patent and the base steel 6Cr4W3Mo2VNb are high-strength and tough steels, and the wear resistance still needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: After the steel ingot was heated at 1160°C and rolled into 100 rounds, it was slowly cooled, annealed, and finished;

Embodiment 2

[0030] Example 2: After the steel ingot was heated at 1160°C and rolled to 90 square meters, it was slowly cooled, annealed, and finished;

Embodiment 3

[0031] Example 3: The red steel ingot is heated and rolled into a 86×255 billet, heated after grinding, rolled into a 56×255 slab, slowly cooled, annealed and finished.

[0032] 3. Embodiment Cutting die blank preparation

[0033] Embodiment 1 is sawed and cut into billets;

[0034] Embodiment 2 (saw block) is hammered and upset into a circle and billeted, and the process is by the current process of A2 steel;

[0035] Example 3 Hot rolling into plates, punching / cutting and blanking, the process follows the current process of A2 steel.

[0036] 4. Embodiment Cutting die manufacturing

[0037] Cutting die blank machining - heat treatment (quenching and tempering) - finishing into cutting tools and molds

[0038] 5. Example 1: After heat treatment, the hardness is 63HRC, and the initial use is good;

[0039] Example 2: After heat treatment, the hardness is 63.7HRC, and the preliminary use condition is good;

[0040] Example 3: The hardness after heat treatment is 61.8HRC, a...

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Abstract

The invention relates to a universal cold work tool steel, which belongs to the technical field of material, wherein the components and the percentage by weight are that C 0.90-1.10, Si 0.70-1.30, Mn 0.30-1.00, P<=0.030, S<=0.030, Cr 4.00-5.50, Mo 0.50-1.00, W 1.00-1.90, V 0.75-1.20 and the allowance is Fe. Compared with cold work die steel of chrome 12 system and chrome 8 system which are extensively used, the universal cold work tool steel has better hardness, better abradability and the matching between and toughness and hot hardness and better comprehensive mechanical properties, which can be used to manufacture alloy tool steel, cutting tool and die. The invention provides a high-performance cold work tool steel, which can be selective to use.

Description

technical field [0001] The invention relates to a tool steel in the technical field of metal materials, in particular to a general-purpose cold work tool steel. Background technique [0002] Cold-work alloy tool steels are all high-carbon steels, and most of them are high-alloy steels. According to the mass percentage of the main alloying element Cr, it can be divided into three series: 12Cr, 8Cr and 5Cr. [0003] The 12Cr series is a high-Cr cold work alloy tool steel with good hardenability, high hardness and high wear resistance, and is the most widely used. The representative steel grade is Cr12Mo1V1 (D2) of the national standard GB / T1299 series of alloy tool steel. After electric machining is generally used to manufacture molds, D2 is easy to deform and crack after wire cutting due to poor toughness; D2's thermohardness-the weak resistance to softening also limits its use under high-speed and accompanied by temperature rise conditions. [0004] The 8Cr series is a med...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/24
Inventor 田庆亮蔡珣卢南法潘干群沈耀陈跃南安全长
Owner SHANGHAI JIAO TONG UNIV
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