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Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof

A semi-high-speed steel and copper brazing technology, applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of poor sharpness, low sharpness, and reduce the cost of blade steel alloy content, and achieve low cost and improve smoothness. , the effect of reducing material cost and process cost

Active Publication Date: 2014-01-15
ANHUI JIALONG KNIVES MFG
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  • Summary
  • 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-copper-brazed steel-inlaid paper-cutting blade and a preparation method thereof. The paper cutting blade prepared by the designed blade steel material 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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  • Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof
  • Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof
  • Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A semi-high-speed steel copper-brazed paper-cutting blade inlaid with steel in 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, and the composition of the semi-high-speed steel blade steel 1 As shown in Table 1. Its concrete preparation method is as follows:

[0045] (1) Production of semi-high-speed steel blade steel:

[0046] 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 unavoidable impurities; the composition design of...

Embodiment 2

[0063] A semi-high-speed steel copper-brazed paper-cutting blade inlaid with steel in 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, and the composition of the semi-high-speed steel blade steel 1 As shown in Table 1. Its concrete preparation method is as follows:

[0064] (1) Production of semi-high-speed steel blade steel:

[0065] 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.

[0066] (2) Forging and rolling process:

[0067] The semi-high-speed steel blade steel smelted in step (1) is forged and rolled, and the forging and rolling temperature is 870°C to 930°C.

[0068] (3) Annealing:

[0069] Heat the semi-high-speed steel blade steel forged and rolled in step (2...

Embodiment 3

[0078] A semi-high-speed steel copper-brazed paper-cutting blade inlaid with steel in 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, and the composition of the semi-high-speed steel blade steel 1 As shown in Table 1. Its concrete preparation method is as follows:

[0079] (1) Production of semi-high-speed steel blade steel:

[0080] 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.

[0081] (2) Forging and rolling process:

[0082] 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.

[0083] (3) Annealing:

[0084] Heat the semi-high-speed steel blade steel forged in step (2) to 850°C, keep it warm fo...

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Abstract

The invention discloses a semi-high speed steel copper soldering inlaid steel cutting blade and a manufacturing method thereof, which belong to the field of mechanical blades. The cutting blade is manufactured by welding a semi-high speed shear steel on a cutter body through copper soldering, wherein the semi-high speed shear steel comprises the following chemical elements by weight percent: 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 one of Co or Ni, no more than 0.02% of S, no more than 0.025% of P and the balance of Fe. The method for preparing comprises: smelting the semi-high speed shear steel, carrying out forging rolling at 870 DEG C-1080 DEG C, and then annealing; secondarily, heating to 1160 DEG C-1180 DEG C, carrying out copper soldering to inlay steel, and quenching at the same time; and finally, tempering. The cutting blade has the same hardness as the original high speed steel copper soldering inlaid steel cutting blade, but has higher sharpness, and is easy for cutter sharpening, and the material cost and the technological cost are lowered.

Description

technical field [0001] The invention relates to the technical field of mechanical blades, more specifically, to a semi-high-speed steel copper-brazed paper-cutting blade and a preparation method thereof. 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 cutters. At present, there are two methods for inserting the blade steel int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/30C22C38/26C22C38/48C21D1/18C21D8/02C21D9/22B26D1/00
Inventor 胡明王润田胡会峰胡三宝
Owner ANHUI JIALONG KNIVES MFG
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