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Manufacturing method of composite shear blade

A manufacturing method and alloy technology, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve the problems of increasing the cost of cutting blades, increasing the brittleness tendency of materials, and inability to process assembly holes, so as to reduce the problem of product cracking and eliminate brittleness. , cost saving effect

Pending Publication Date: 2021-04-06
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous high-speed development of rolling technology and the continuous improvement of product quality requirements, the requirements for cutting edge performance are getting higher and higher, and the alloy content of cutting edge tool steel is getting higher and higher, especially the cutting edge of high-strength steel rolling line, V, The element content of Ni, Mo, W and other precious alloys is continuously increasing. Due to the high hardness of the cutting edge, it is extremely difficult to process after quenching, and the assembly hole cannot be processed. Therefore, it is necessary to complete the processing of the assembly hole and keyway before quenching. Due to various This kind of threaded hole, the position of the keyway will produce a great concentration of stress during quenching. When the alloy content continues to increase, the brittleness of the material tends to increase, and problems such as cracking are easy to occur. In addition, the increase in precious metals will significantly increase the production cost of the shear blade. And consume a large amount of precious metals, which does not meet the requirements of green manufacturing in today's society

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method of manufacturing a composite cutting edge suitable for cold rolling flying shears. The size of the cutting edge is 40mm*65mm*2030mm. The chemical composition and content of the material are:

[0044] element C Si mn Cr Mo V Cr12Mo1V1 1.4-1.6 ≤0.60 ≤0.60 11.0-13.0 0.7-1.2 0.5-1.1

[0045] Specific steps are as follows:

[0046] Step 1, making the blank:

[0047] According to the components and contents in the above table, high-alloy forging blanks are made, and 45# steel is used to make carbon steel forging blanks.

[0048] Step 2. Forging and compounding two materials:

[0049] According to the design size of the cutting edge and process two parts of the forging billet to keep the bright surface of the forging billet, weld the two parts of the forging billet together, and then adopt the high temperature forging method, heat it to 1160 ℃ forging, and forge the high alloy forging billet and carbon steel forging The billet is up...

Embodiment 2

[0059] A method of manufacturing a composite cutting edge suitable for hot rolling flying shears. The size of the cutting edge is 100mm*190mm*1550mm. The chemical composition and content of the material are:

[0060] element C Si mn Cr Mo V H13 material 0.4-0.7 0.8-1.2 0.2-0.5 4.75-5.50 1.1-1.75 0.8-1.2

[0061] Specific steps are as follows:

[0062] Step 1, making the blank:

[0063]According to the components and contents in the above table, high-alloy forging blanks are made, and 45# steel is used to make carbon steel forging blanks.

[0064] Step 2. Forging and compounding two materials:

[0065] According to the design size of the cutting edge and process two parts of the forging billet to keep the bright surface of the forging billet, weld the two parts of the forging billet together, and then use high temperature forging, heat to 1230 ° C forging, and forge the high alloy forging billet and carbon steel forging The billet is upsettin...

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Abstract

The invention discloses a manufacturing method of a composite shear blade, and belongs to the technical field of shear blade manufacturing and processing. The manufacturing method comprises the following specific steps: step 1, manufacturing a blank, step 2, forging and compounding two materials, step 3, spheroidizing and rough machining, step 4, heat treatment, and step 5, detection. The shear blade can be used for shearing high-precision and high-strength steel plates, is made of composite materials, adopts about half of carbon steel materials, reduces the content of precious metal, saves the cost and is environmentally friendly, meanwhile, the brittleness of the shear blade is reduced, so that the cracking phenomenon is reduced.

Description

technical field [0001] The invention relates to a manufacturing method of a shearing blade, which is a manufacturing method of a composite shearing blade. Background technique [0002] With the continuous high-speed development of rolling technology and the continuous improvement of product quality requirements, the requirements for cutting edge performance are getting higher and higher, and the alloy content of cutting edge tool steel is getting higher and higher, especially the cutting edge of high-strength steel rolling line, V, The element content of Ni, Mo, W and other precious alloys is continuously increasing. Due to the high hardness of the cutting edge, it is extremely difficult to process after quenching, and the assembly hole cannot be processed. Therefore, it is necessary to complete the processing of the assembly hole and keyway before quenching. Due to various This kind of threaded hole, the position of the keyway will produce a great concentration of stress du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/40C21D1/32C21D1/18C21D9/22C21D6/00C22C38/02C22C38/04C22C38/22C22C38/24
CPCB23P15/40C21D1/32C21D1/18C21D9/22C21D6/002C21D6/008C21D6/005C22C38/02C22C38/04C22C38/22C22C38/24
Inventor 杨昱东梁俊良韩维国辛胜朋杨少鹏
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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