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Low-chromium and high-silicon wear-resistant vanadium-nitrogen-boron reinforced steel belt for kitchen cutter

A silicon-vanadium-nitrogen-boron, multi-component technology, applied in the improvement field of steel for kitchen knives, can solve the problems of reducing temper brittleness, poor regrinding performance, and affecting the service life of knives, and achieves good corrosion resistance, high matrix strength, The effect of low production cost

Active Publication Date: 2013-04-17
SHANDONG TAISHAN STEEL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the composition design of kitchen knives mostly adopts increasing chromium content and carbon content and adding niobium, tungsten, aluminum, titanium, nitrogen and silicon to improve hardness; adding special elements copper and silver for antibacterial purposes; adding molybdenum, vanadium, Titanium, etc. reduce temper brittleness, improve the strength of the tool matrix and the sharpness of the tool edge, and its HRC hardness is between 48-60; due to the simple consideration of increasing the hardness, without considering the regrinding of the tool, it is difficult to regrind the tool after use Sharpening keeps the blade sharp, which affects the service life of the tool; martensitic stainless steel has better initial grinding performance, but poor regrinding performance in actual use, that is, the sharpness and wear resistance of the blade edge are reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The specific components contained in the low-chromium, high-silicon, vanadium, nitrogen, and boron multi-element strengthened wear-resistant kitchen knife steel belt, calculated by weight percentage, are:

[0018] C 0.58%; Mn 0.47%; Si 2.78%; P 0.009%; S 0.004%; Cr 9.56%; Ni 0.16%;

[0019] Said V:N is between 4.4 and added in the form of vanadium nitride alloy.

[0020] The width of the low-chromium, high-silicon, vanadium, nitrogen, and boron multi-component reinforced wear-resistant steel strip for kitchen knives is 1250mm.

[0021] The above-mentioned low-chromium, high-silicon, vanadium-nitrogen-boron multi-component reinforced wear-resistant steel strip for kitchen knives, its production method includes processes such as intermediate frequency furnace, electric furnace smelting, stainless steel refining, continuous casting slab hot delivery, coil hot rolling, intermediate frequency before electric furnace smelting, etc. After melting 10.5 tons of ferrochrome in t...

Embodiment 2

[0024] The specific ingredients contained in the low-chromium, high-silicon, vanadium, nitrogen, and boron multi-component reinforced wear-resistant steel strip for kitchen knives, calculated by weight percentage, are:

[0025] C 0.55%; Mn 0.42%; Si 2.89%; P 0.008%; S 0.003%; Cr 9.76%; Ni 0.20%;

[0026] Where V:N=4.3, added in the form of vanadium nitride alloy.

[0027] The width of the low-chromium, high-silicon, vanadium, nitrogen, and boron multi-element reinforced wear-resistant steel belt for kitchen knives is 1320mm.

[0028]Production method is with embodiment 1. Among them, before the electric furnace smelting, the intermediate frequency furnace melted 10.89 tons of ferrochrome and added it to the ladle. The molten iron added to the electric furnace was desulfurized and dephosphorized by the converter, and the desulfurization of the molten iron was S 0.003. 1 ton of molten iron is added to the eccentric bottom electric furnace equipped with furnace door oxygen lanc...

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Abstract

The invention discloses a low-chromium and high-silicon wear-resistant vanadium-nitrogen-boron reinforced steel belt for a kitchen cutter. The low-chromium and high-silicon wear-resistant vanadium-nitrogen-boron reinforced steel belt is characterized in that the low-chromium and high-silicon wear-resistant vanadium-nitrogen-boron reinforced steel belt comprises the specific components by weight percentage: 0.50-0.60% of C, 0.3-0.7% of Mn, 2.5-3.5% of Si, less than or equal to 0.010% of P, less than or equal to 0.010% of S, 9.00-10.00% of Cr, less than or equal to 0.6% of Ni, 0.16-0.32% of V, 0.04-0.08% of N, 0.0008-0.002% of B and the balance of Fe. According to the low-chromium and high-silicon wear-resistant vanadium-nitrogen-boron reinforced steel belt for the kitchen cutter, the matrix strength is high; a cutting edge of the cutter has good sharpness, wear resistance and corrosion resistance; and the production cost is low. The low-chromium high-silicon wear-resistant vanadium-nitrogen-boron reinforced steel belt is mainly used for the kitchen cutter and can also be used for the production of shears.

Description

[0001] technical field [0002] The invention relates to an improvement of steel for kitchen knives, in particular, it adopts fine-grain strengthening of vanadium-nitrogen-boron multi-element alloy to replace 30Cr13, 40Cr13 and other martensitic stainless steels, and at the same time, the produced knives have good regrindability. Low-chromium, high-silicon, vanadium, nitrogen, and boron multi-component reinforced wear-resistant steel strips for kitchen knives with high cutting edge sharpness. Background technique [0003] In my country, the technical development of kitchen hardware knives has gone through two different stages of development. The first stage is mainly carbon steel knives, and the cutting edge materials are 45#, 55#, 65Mn typical materials; the second stage is mainly stainless steel knives. Mainly 20Cr13 and 30Cr13 are used as the initial application materials. In order to improve wear resistance, the choice of materials is to increase the carbon chromium conte...

Claims

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Application Information

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IPC IPC(8): C22C38/54
Inventor 陈培敦陈坤李昌琦赵刚王俊海李志平刘明吴玉红王锋张恒伟
Owner SHANDONG TAISHAN STEEL GROUP
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