Semi-high speed steel shear steel

A semi-high-speed steel, semi-high-speed technology, 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, so as to achieve low cost, improve smoothness, reduce material cost and The effect of process cost

Active Publication Date: 2014-04-02
ANHUI JIALONG KNIVES MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 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 shown in Table 1. Its concrete preparation method is as follows:

[0031] (1) Production of semi-high-speed steel blade steel:

[0032] 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, and the semi-high-speed steel blade steel satisfying the present invention is composed of the following chemical elements in weight percentage: C: 0.56~ 0.65%, Si: 0.40-0.60%, Mn: 0.25-0.40%, Cr: 6.0-6.8%, W: 1.6-2.5%, Mo: 4.2-5.2%, V: 0.7-0.9%, Nb: 0.1-0.2 %, one of Co or Ni: 0.3-0.4%, S≤0.02%, P≤0.025%, the rest is Fe and unavo...

Embodiment 2

[0049] 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 shown in Table 1. Its concrete preparation method is as follows:

[0050] (1) Production of semi-high-speed steel blade steel:

[0051] First, the semi-high-speed steel blade steel is prepared, and the semi-high-speed steel blade steel is smelted by induction electric furnace or induction furnace + electroslag remelting. The composition of the semi-high-speed steel blade steel is shown in Table 1.

[0052] (2) Forging and rolling process:

[0053] The semi-high-speed steel blade steel smelted in step (1) is forged and rolled at a forging temperature of 870°C to 930°C.

[0054] (3) Annealing:

[0055] Heat the semi-high-speed steel blade steel ...

Embodiment 3

[0064] 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 shown in Table 1. Its concrete preparation method is as follows:

[0065] (1) Production of semi-high-speed steel blade steel:

[0066] First, the semi-high-speed steel blade steel is prepared, and the semi-high-speed steel blade steel is smelted by induction electric furnace or induction furnace + electroslag remelting. The composition of the semi-high-speed steel blade steel is shown in Table 1.

[0067] (2) Forging and rolling process:

[0068] The semi-high-speed steel blade steel smelted in step (1) is forged and rolled at a forging temperature of 940°C to 990°C.

[0069] (3) Annealing:

[0070] Heat the semi-high-speed steel blade steel ...

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Abstract

The invention discloses semi-high speed steel shear steel and belongs to the technical field of mechanical blades. The semi-high speed steel shear steel comprises, by weight, 0.56-0.65% of C, 0.40-0.60% of Si, 0.25-0.40% of Mn, 6.0-6.8% of Cr, 1.6-2.5% of W, 4.2-5.2% of Mo, 0.7-0.9% of V, 0.1-0.2% of Nb, 0.3-0.4% of Co or Ni, S<=0.02%, P<=0.025% and the balance Fe. The hardness of copper brazing steel plated paper cutting blades prepared by the semi-high speed steel shear steel is identical with that of the existing high speed steel copper brazing steel plated paper cutting blades, but the blades are higher in sharpness and easy to grind, and material and process costs 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] In the past, paper cutting blades were mainly steel-inlaid paper cutting blades made of CrWMn steel and high-speed steel as blade steel. The steel-inlaid paper cutter with CrWMn steel as the blade steel has a hardness of HRC61~63, which is mainly used for cutting paper with low hardness; the steel-inlaid paper cutter with W18Cr4V or W6Mo5Cr4V2 high-speed steel as the blade steel has a hardness of HRC64~ 66, mainly used for cutting high-quality high-strength paper or cardboard and other paper cut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/30C22C38/48
Inventor 胡明王润田胡会峰胡三宝
Owner ANHUI JIALONG KNIVES MFG
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