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A kind of stainless steel pipe and its processing technology

A technology of stainless steel pipe and processing technology, which is applied in the field of stainless steel pipe manufacturing, can solve the problems of stainless steel pipe strength, poor tensile resistance, corrosion resistance, poor anti-microbial corrosion effect, and short service life, so as to improve corrosion resistance and reduce Time-consuming, efficiency-enhancing effects

Active Publication Date: 2019-08-16
佛山市南海区双森金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing stainless steel pipe composition ratio is not reasonable, although it can meet the needs of general chemical corrosion resistance, but the anti-microbial corrosion effect is poor, and the service life is short
At the same time, the nitrogen content in existing stainless steel pipes is generally low, basically below 2.5wt%, and the strength, tensile strength, and corrosion resistance of stainless steel pipes are poor, and the performance is poor

Method used

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  • A kind of stainless steel pipe and its processing technology
  • A kind of stainless steel pipe and its processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A stainless steel pipe, the mass percentage of its components is:

[0032] C: 0.001%, Si: 0.2%, Mn: 0.1%, Ni: 8.0%, Cu: 5%, N: 3%, rare earth element 3%, and the rest is Fe and unavoidable impurities.

[0033] Specifically, the component mass percent of the rare earth element is: lanthanum (La) 52%, praseodymium (Pr) 15%, neodymium (Nd) 12%, gadolinium (Gd) 10%, terbium (Tb) 8%, lutetium (Lu) 3%.

[0034] Specifically, the processing technology of the above-mentioned stainless steel pipe includes the following steps:

[0035](1) molten steel refining: a: sintering: choose blank material, described blank material is iron ore 200kg, laterite nickel ore 120kg, coke 10kg, silicon dioxide 50kg, manganese dioxide 30kg, copper ore 100kg, described iron ore The water content of the ore is 10%, and the water content of the laterite nickel ore is 20%. After being ground by a grinder, it is placed in a sintering furnace for sintering and reduction to obtain raw material A; speci...

Embodiment 2

[0042] A stainless steel pipe, the mass percentage of its components is:

[0043] C: 0.03%, Si: 0.5%, Mn: 0.4%, Ni: 10%, Cu: 8%, N: 5%, rare earth element 5%, and the rest is Fe and unavoidable impurities.

[0044] As preferably, the component mass percent of described rare earth element is: lanthanum (La) 52%, praseodymium (Pr) 15%, neodymium (Nd) 12%, gadolinium (Gd) 10%, terbium (Tb) 8%, lutetium (Lu) 3%.

[0045] Specifically, the processing technology of the above-mentioned stainless steel pipe includes the following steps:

[0046] (1) molten steel refining: a: sintering: select blank material, described blank material is iron ore 220kg, laterite nickel ore 180kg, coke 15kg, silicon dioxide 70kg, manganese dioxide 50kg, copper ore 150kg, described iron ore The water content of the ore is 30%, and the water content of the laterite nickel ore is 40%. After being ground by a grinder, it is placed in a sintering furnace for sintering and reduction to obtain raw material A;...

Embodiment 3

[0050] A stainless steel pipe, the mass percent of the components of the stainless steel pipe is:

[0051] C: 0.03%, Si: 0.4%, Mn: 0.3%, Ni: 8%, Cu: 5%, N: 5%, rare earth element 3%, the rest is Fe and unavoidable impurities;

[0052] As preferably, the component mass percent of described rare earth element is: lanthanum (La) 52%, praseodymium (Pr) 15%, neodymium (Nd) 12%, gadolinium (Gd) 10%, terbium (Tb) 8%, lutetium (Lu) 3%.

[0053] Specifically, the processing technology of the above-mentioned stainless steel pipe includes the following steps:

[0054] (1) molten steel refining: a: sintering: select blank material, described blank material is iron ore 200kg, laterite nickel ore 130kg, coke 15kg, silicon dioxide 50kg, manganese dioxide 30kg, copper ore 110kg, described iron ore The water content of the ore is 20%, and the water content of the laterite nickel ore is 25%. After being ground by a grinder, it is placed in a sintering furnace for sintering and reduction to ob...

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PUM

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Abstract

The invention discloses a machining process of a stainless steel tube. The stainless steel tube comprises components including, by mass, 0.001%-0.03% of C, 0.2%-0.5% of Si, 0.1%-0.4% of Mn, 8.0%-10% of Ni, 5%-8% of Cu, 3.5%-5% of N, 3.5%-5% of rare earth elements and the balance Fe and inevitable impurities. The rare earth elements and the copper element in the stainless steel tube can achieve thesynergistic effect, bacteria and microorganisms in stainless steel can be effectively killed, the time is greatly shortened, efficiency is improved, and the resistance to corrosion of the stainless steel is improved; and the content of the nitrogen is as high as 3.5 wt% to 5 wt%, and therefore it is guaranteed that the stainless steel tube has the good resistance to corrosion, tensile strength and strength.

Description

technical field [0001] The invention belongs to the technical field of stainless steel pipe manufacturing, and in particular relates to a stainless steel pipe and its processing technology. Background technique [0002] Stainless steel is a hollow long round steel, mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial pipelines and mechanical structural components. The existing stainless steel pipes have poor composition ratio rationality. Although they can meet the requirements of general chemical corrosion resistance, they have poor anti-microbial corrosion effect and short service life. At the same time, the nitrogen content in existing stainless steel pipes is generally low, basically below 2.5 wt%, and the strength, tensile strength, and corrosion resistance of the stainless steel pipes are poor, and the performance is poor. Contents of the invention [0003] In order to overcome the deficiencies of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/04C22C38/02C22C38/04C22C38/08C22C38/16
CPCC22C33/04C22C38/001C22C38/005C22C38/02C22C38/04C22C38/08C22C38/16
Inventor 林清松狄宇杰
Owner 佛山市南海区双森金属制品有限公司