Preparation method of antibacterial corrosion-resistant stainless steel

A stainless steel and alloy technology, applied in the direction of manufacturing tools, heat treatment equipment, quenching agent, etc., can solve the problem of weak corrosion resistance of antibacterial stainless steel, to achieve the effect of increasing the use value and good corrosion resistance

Active Publication Date: 2019-06-28
TAIZHOU XINLONGXIANG METAL PROD
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing antibacterial and corrosion-resistant stainless steel for the problem of weak corrosion resistance of existing antibacterial stainless steel

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  • Preparation method of antibacterial corrosion-resistant stainless steel

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preparation example Construction

[0019] A preparation method for antibacterial and corrosion-resistant stainless steel, comprising the following steps:

[0020] (1) Preparation of alloy materials: Mix copper ingots and holmium ingots at a weight ratio of 68-72:5, place them in a heating furnace, pass argon gas into the heating furnace, heat to melt to obtain a melt, and stir for 3-5 minutes Finally, keep warm for 40-60 minutes, then let it stand for 5-10 minutes, inject it into the mold, and obtain the alloy material;

[0021] (2) Melting the 304-type stainless steel raw material sample and the alloy material obtained in step (1) in a vacuum induction furnace at a weight ratio of 95-97:5 to obtain an ingot;

[0022] (3) After the ingot is forged, hot rolling is carried out several times, and the final rolling temperature is selected as 905-915°C, and then the obtained plate is put into a bell furnace filled with a protective atmosphere, and the temperature is 780-820°C Keep it warm for 3-4 hours, and then co...

Embodiment 1

[0038] A preparation method for antibacterial and corrosion-resistant stainless steel, comprising the following steps:

[0039] (1) Preparation of alloy materials: Mix copper ingots and holmium ingots at a weight ratio of 70:5, place them in a heating furnace, pass argon gas into the heating furnace, and heat to 1100°C to melt to obtain a melt. After stirring for 4 minutes, Insulate for 50 minutes, then let it stand for 8 minutes, pour it into the mold, and obtain the alloy material;

[0040] (2) Melting the 304-type stainless steel raw material sample and the alloy material obtained in step (1) in a vacuum induction furnace at a weight ratio of 96:5 at a melting temperature of 1420-1460°C to obtain an ingot;

[0041] The chemical composition of the 304 type stainless steel raw material sample is by weight: C0.02%, Mn1.16%, P0.04%, S0.5%, Cr19.5%, Ni10%, and the balance is iron;

[0042] (3) After the ingot is forged, hot rolling is carried out several times. The final rollin...

Embodiment 2

[0045] A preparation method for antibacterial and corrosion-resistant stainless steel, comprising the following steps:

[0046] (1) Preparation of alloy materials: Mix copper ingots and holmium ingots at a weight ratio of 72:5, place them in a heating furnace, pass argon gas into the heating furnace, heat to 1110°C to melt to obtain a melt, and stir for 3 minutes. Insulate for 60 minutes, then let it stand for 5 minutes, inject it into the mold, and obtain the alloy material;

[0047] (2) The 304-type stainless steel raw material sample and the alloy material obtained in step (1) were melted in a vacuum induction furnace at a weight ratio of 95:5, and the melting temperature was 1460°C to obtain an ingot;

[0048] The chemical composition of the 304 type stainless steel raw material sample is by weight: C0.02%, Mn1.16%, P0.04%, S0.5%, Cr19.5%, Ni10%, and the balance is iron;

[0049] (3) After the ingot is forged, hot rolling is carried out several times. The final rolling temp...

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Abstract

The invention belongs to the technical field of antibacterial stainless steel processing, and particularly relates to a preparation method of antibacterial corrosion-resistant stainless steel. The preparation method comprises the steps of preparing an alloy material, smelting a 304 stainless steel raw material sample and an alloy material to obtain an ingot, and carrying out heat treatment under an appropriate condition after multiple hot rolling. Compared with the prior art, the preparation method has the following advantages that in the preparation method, the alloy material is prepared froma copper ingot and a holmium ingot under a certain condition, then the alloy material and the 304 stainless steel raw material are simultaneously smelted to obtain the stainless steel material with asmaller grain size, and the stainless steel material is directly transferred into a bell-type furnace after final rolling, so that a plate is subjected to heat treatment under a certain condition, the dynamic recrystallization is carried out in a structure, and enough rich-phase copper is precipitated out by matching multi-stage cooling condition; the low-melting-point holmium ingot is added after being smelted with the copper ingot and can exist in the alloy as an intermetallic compound, therefore, the precipitation is strengthened, and meanwhile, good corrosion resistance is guaranteed, theuse value of the steel is increased, and the method is suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of antibacterial stainless steel processing, and in particular relates to a preparation method of antibacterial and corrosion-resistant stainless steel. Background technique [0002] With the development of the economy and the improvement of people's living standards, people pay more and more attention to the surrounding environment and their own health, and have more and more functional requirements for materials. It is against this background that antibacterial stainless steel was developed. come out. Antibacterial stainless steel refers to a new stainless steel material with antibacterial function. It mainly adds an appropriate amount of antibacterial metal elements, such as copper, to the existing stainless steel matrix, and undergoes special heat treatment operations to precipitate nano-copper-rich phases in stainless steel. A certain amount of copper ions are released during use, making it have a stro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/42C22C38/04C22C33/06C21D1/74C21D1/613C21D8/02
Inventor 张海涛
Owner TAIZHOU XINLONGXIANG METAL PROD
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