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Semi-high-speed shear steel

A semi-high-speed steel and semi-high-speed technology, which is applied in the field of semi-high-speed steel blade steel, can solve the problems of poor sharpening, low sharpness, and reduce the cost of blade steel alloy quantity, so as to achieve low cost, improve finish, reduce material cost and Process cost effect

Inactive Publication Date: 2016-07-06
CHONGQING LINGYUN TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of low sharpness and poor sharpening performance of high-speed steel inlaid paper cutting blades in the prior art, and provide a semi-high-speed steel blade steel, which is prepared by using the optimally designed blade steel material of the present invention for paper cutting The blade has a hardness of HRC64~66, and its sharpness and sharpening performance are significantly better than the steel-inlaid paper cutting blade made of high-speed steel as the blade steel, and the alloy amount cost of the blade steel is reduced

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with embodiment:

[0018] The semi-high-speed steel copper brazing steel-inlaid paper cutting blade prepared by the semi-high-speed steel blade steel of this embodiment, the paper cutting blade is made of semi-high-speed steel blade steel 1 welded on the cutter body 3 through copper brazing, the semi-high-speed The composition of steel blade steel 1 is as follows: it is composed of the following chemical elements in weight percentage: C: 0.66-0.7%, Si: 0.35-0.5%, Mn: 0.3-0.42%, Cr: 5.5-7%, W: 1.5% ~2.7%, Mo: 4.5~5%, V: 1~1.2%, Nb: 0.13~0.21%, Co0.5~0.55%, S≤0.01%, P≤0.02%, the rest is Fe;

[0019] Its concrete preparation method is as follows:

[0020] (1) Production of semi-high-speed steel blade steel:

[0021] First prepare the semi-high-speed steel blade steel, adopt induction electric furnace or induction electric furnace+electroslag remelting to smelt the semi-high-speed steel blade steel, meet...

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Abstract

The invention discloses semi-high-speed shear steel. The semi-high-speed shear steel is composed of following chemical elements including, by weight, 0.66-0.7% of C, 0.35-0.5% of Si, 0.3-0.42% of Mn, 5.5-7% of Cr, 1.5-2.7% of W, 4.5-5% of Mo, 1-1.2% of V, 0.13-0.21% of Nb, 0.5-0.55% of Co, 0-0.01% of S, 0-0.02% of P, and the balance Fe. A copper-brazed steel-inlaid paper cutting blade prepared from the semi-high-speed shear steel has the same hardness as an original copper-brazed steel-inlaid paper cutting blade prepared from high-speed steel, but is higher in sharpness and easy to sharpen. Besides, material cost and process cost are reduced.

Description

technical field [0001] The invention relates to the technical field of mechanical blades, and more specifically relates to a semi-high-speed steel blade steel, which is especially suitable for use as a semi-high-speed steel copper-brazed steel-inlaid paper cutting blade steel. Background technique [0002] The use performance of the paper cutting blade should not only have high sharpness and wear resistance, but also have good impact resistance and certain thermal hardness. [0003] It is very important to maintain the sharpness and sharpness of the cutting edge when the paper cutting blade is cutting. The carbides in the mouth are easy to fall off, which will not only reduce the sharpness, but also easily cause chipping during shearing. In recent years, we have researched, investigated, analyzed and demonstrated that if a suitable semi-high-speed steel blade steel is used, the number of carbides in the blade steel is reduced to between 3% and 8%, and the hardness of the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/30C21D8/00
Inventor 喻富春
Owner CHONGQING LINGYUN TOOLS CO LTD
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