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Composite steel plate for multi-layer tool and preparation method thereof

A composite steel plate and cutting tool technology, which is applied in the field of iron and steel metallurgy, can solve the problems of stagnation in the development and research of cutting tool raw materials, disproportionate steel consumption, and reluctance to invest too much, so as to increase tempering stability, increase service life, and improve production efficiency Effect

Active Publication Date: 2022-05-24
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the strength, wear resistance or corrosion resistance of the above steel for knives has been improved to a certain extent, the production volume of large domestic steel enterprises is not proportional to the amount of steel used in the knife industry. In addition, the process requirements are high and the cost is high. Reluctance to invest too much technical force and funds in research and development, so that the development and research of cutting tool raw materials has been stagnant
[0008] Therefore, for how to obtain high-end knife steel with high hardness, high wear resistance and high corrosion resistance through a reasonable preparation process, especially through low-cost and large-scale manufacturing of high-end knife steel, there is no effective domestic solution

Method used

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  • Composite steel plate for multi-layer tool and preparation method thereof

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preparation example Construction

[0036] The present invention provides a method for preparing the above-mentioned composite steel plate for multi-layer cutting tools, comprising the following steps:

[0037] A: Raw material preparation

[0038] Nickel plate and pure titanium plate are produced or purchased according to national standards; the thickness of the base plate is 100-500mm, the thickness of the middle plate is 1-10mm, and the thickness of the outer layer is 10-50mm;

[0039] The base plate, the outer layer plate and the middle plate are processed to the same size, the contact surface of the slab is cleaned of oxide scale and the surface of the slab is degreasing;

[0040] B: Assembly and welding

[0041] Place the middle plate and outer layer plate on the top and bottom of the substrate in turn. After the placement is completed, spot welding the sides of each layer of steel plates; send the spot-welded blanks to a vacuum electron beam welding box to seal and weld the contact surfaces. The degree of...

Embodiment 1

[0061] In this embodiment, the thickness of the base plate is 100mm, the thickness of the middle plate is 1mm, and the thickness of the outer layer plate is 10mm to produce a composite steel plate for multi-layer cutting tools. The steps include:

[0062] A: Raw material preparation

[0063] a. The base plate, the outer titanium plate and the intermediate plate are processed to the same size, and the contact surface of the slab is cleaned of oxide scale for use;

[0064] b. Degrease the surface of the slab after processing;

[0065] B: Assembly and welding

[0066] a. Place the intermediate plate and the titanium plate in sequence on the top and bottom of the substrate;

[0067] b. After the placement is completed, spot welding the sides of each layer of steel plates;

[0068] c. Send the spot-welded blank to a vacuum electron beam welding box to seal and weld the contact surface, and the vacuum degree is 0.008Pa;

[0069] C: heating

[0070] a. Use a trolley-type heating...

Embodiment 2

[0089] In this embodiment, the thickness of the base plate is 500mm, the thickness of the intermediate plate is 10mm, and the thickness of the outer titanium plate is 50mm to produce a composite steel plate for multi-layer cutting tools. The steps include:

[0090] A: Raw material preparation

[0091] a. The base plate, the outer titanium plate and the intermediate plate are processed to the same size, and the contact surface of the slab is cleaned of oxide scale for use;

[0092] b. Degrease the surface of the slab after processing;

[0093] B: Assembly and welding

[0094] a. Place the intermediate plate and the titanium plate in sequence on the top and bottom of the substrate;

[0095] b. After the placement is completed, spot welding the sides of each layer of steel plates;

[0096] c. Send the spot-welded blank to a vacuum electron beam welding box to seal and weld the contact surface, and the vacuum degree is 0.005Pa;

[0097] C: heating

[0098] a. It is heated by a ...

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Abstract

The invention belongs to the technical field of iron and steel metallurgy, and in particular relates to a composite steel plate for multilayer cutting tools and a preparation method thereof. The technical problem solved by the present invention is to provide a composite steel plate for multi-layer cutting tools and a preparation method thereof. The composite steel plate has five layers, including a base plate, two sides of the base plate are intermediate plates, and the other side of the intermediate plate is an outer layer plate; , the substrate is high-carbon martensitic stainless steel, the middle plate is nickel plate, and the outer plate is pure titanium plate; the preparation method of the composite steel plate includes the following steps: raw material preparation, assembly and welding, heating, forging billet opening, heating and rolling Manufacturing, annealing treatment, heat treatment, finishing. The composite steel plate prepared by the invention has high hardness, high wear resistance and high corrosion resistance, low production cost and easy scale production.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and particularly relates to a composite steel plate for multi-layer cutting tools and a preparation method thereof. Background technique [0002] The variety and quantity of my country's cutting tools rank among the top in the world, and it has become an important production base in the world, with an annual output value of more than 15 billion. However, compared with Germany, Japan and other technologically developed countries, there is still a certain gap in the quality of my country's cutting tool products. For example, the price of a German high-end kitchen knife is ten times or even dozens of times that of domestic knives of similar materials. The main difference lies in the raw materials of the knife and its production process, which also restricts the development of my country's knife industry. root cause. [0003] At present, some steels for cutting tools and their manufa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/02B21B37/74B21J5/06B21J13/06B32B15/01B32B15/18B32B7/10C21D1/18C21D1/26C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46
Inventor 林发驹李雄吴铖川杜思敏
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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