Antimicrobial post-cure cutery type stainless steel

A secondary hardening, stainless steel technology, applied in the field of stainless steel, can solve the problem of lack of antibacterial ability, achieve good application prospects, high antibacterial properties, and improve the effect of tool grades

Active Publication Date: 2010-04-14
CENT IRON & STEEL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And no antibacterial ability

Method used

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  • Antimicrobial post-cure cutery type stainless steel
  • Antimicrobial post-cure cutery type stainless steel
  • Antimicrobial post-cure cutery type stainless steel

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Experimental program
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Embodiment Construction

[0022] According to the chemical composition range designed by the present invention, 3 heats of the steel of the present invention were smelted on a 25kg vacuum induction furnace, and its specific chemical composition is as shown in Table 1. Molten steel is cast into ingots and forged into φ17mm rods. After the steel is annealed, it is processed into a sample, which is quenched and tempered (quenched at 1000-1100°C and tempered at 400-600°C). The mechanical properties at room temperature are shown in Tables 2-6.

[0023] The steel of the invention has high strength, hardness and good impact toughness.

[0024] 1. After quenching at the same temperature and tempering at 540°C, the steel of the present invention has a higher hardness than the comparative steel. (See Table 3, 7)

[0025] 2. After quenching at the same temperature and tempering at 500-580°C, the steel of the invention has a higher tensile strength than the comparison steel. (See Table 5)

[0026] 3. After que...

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Abstract

The invention belongs to the stainless steel field, in particular to a stainless steel of an antibacterial secondary hardening cutter. The steel includes specific chemical constituents (in weight percent) as follows: 0.50 to 0.70 percent of C, Si<=0.40 percent, S<=0.030 percent, P<=0.030 percent, Mn<=0.40 percent, 0.10 to 1.00 percent of Mo, 14 to 16 percent of Cr, N: 0.05 to 0.40 percent, Ag: 0.035 to 0.10 percent, and balance Fe and unavoidable impurities. Compared with the prior art, the stainless steel has the advantages of good antibacterial ability and comprehensive performance. Comparedwith the current kitchen knives, the stainless steel has the antibacterial property and adopts the secondary hardening treatment method to make materials have higher hardness in the meanwhile, therebymeeting the user requirements and raising the grade of cutters. The steel has rather high hardness (54.6 to 60.1HRC) and tensile strength (1935 to 2116MPa), and rather good impact absorbing energy (8 .2 to 9.7J).

Description

technical field [0001] The invention belongs to the field of stainless steel, in particular to an antibacterial secondary hardened stainless steel tool. It is mainly suitable for steel for kitchen knives, scissors and other knives, and can also be used for public facilities, household appliances, medical equipment, cultural and sports products, and steel for daily sundries. Background technique [0002] With the development of the economy and the improvement of the quality of life, stainless steel is more and more widely used in daily life. People hope that stainless steel should have the functions of imitating mildew, antibacterial and sterilizing while keeping it clean. higher requirement. It is of great significance that stainless steel for kitchen knives can not only maintain good sharpness and toughness, but also have antibacterial function. At present, there are three main types of antibacterial stainless steel widely used in the world. The first category is the ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/22
Inventor 马党参苏杰董瀚孙绍华迟宏宵
Owner CENT IRON & STEEL RES INST
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