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A kind of austenitic stainless steel pipe and production process

A technology of austenitic stainless steel and production process, which is applied in the field of austenitic stainless steel pipe and production process and its curing, can solve the problem of high technical content of small-diameter seamless capillary stainless steel pipe, poor oxidation resistance of seamless capillary stainless steel pipe, The tensile strength and high yield strength are not high enough to achieve the effects of shortening the processing cycle, reducing overheat sensitivity and temper brittleness, and high tensile strength and yield strength

Active Publication Date: 2016-10-19
WUXI XINCHANG STEEL PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country has become a big country in the production and consumption of steel pipes, but there is a large gap between the level of equipment and product quality and that of advanced developed countries, especially the small-diameter seamless capillary stainless steel pipes have high technical content and are difficult to manufacture. For a long time, they have been monopolized by foreign countries. , mainly Japan, France, Germany and the United States, etc. my country basically relies on imports, but expensive raw materials and supporting import costs will largely restrict my country's productivity level and even affect the healthy development of the entire industry; , Due to the unreasonable composition and process, the seamless capillary stainless steel tube has poor oxidation resistance, low tensile strength and high yield strength, high surface roughness, and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides an austenitic stainless steel pipe, the mass percent of its components is: C: 0.04%, S: 0.010%, P: 0.020%, Si: 0.35%, Mn: 1.85%, Ni: 8.2%, Cr: 19.5%, Ti: 0.63%, Cu: 0.02%, B: 0.05%, Co: 0.02%, Mo: 3.2%, V: 2.85%, composite rare earth: 4.6%, and the balance is Fe; The mass percentages of the components are: Er: 12.5%, Ho: 5.2%, Dy: 2%, Ac: 6.2%, Ce: 13%, Eu: 16%, Tb: 8.7%, and the balance is Lu; The production process of the austenitic stainless steel pipe is also provided:

[0029] (1): Proportion the components according to the requirements, and cold-roll the raw material tube through cold rolling equipment to the intermediate blank tube with the required tube outer diameter and wall thickness. The error of the outer diameter of the tube is ±0.25mm, and the error of the wall thickness is ±0.22mm ; (2): Carry out the first heat treatment to the billet tube, the heat treatment sequence is: first carry out a quenching and tempering treatment, the...

Embodiment 2

[0031] This embodiment provides an austenitic stainless steel pipe, the mass percent of its components is: C: 0.06%, S: 0.015%, P: 0.024%, Si: 0.38%, Mn: 1.90%, Ni: 8.5%, Cr: 19.8%, Ti: 0.65%, Cu: 0.04%, B: 0.08%, Co: 0.04%, Mo: 3.5%, V: 2.90%, composite rare earth: 4.8%, and the balance is Fe; The mass percent of components is: Er: 12.8%, Ho: 5.5%, Dy: 4%, Ac: 6.5%, Ce: 15%, Eu: 18%, Tb: 8.9%, and the balance is Lu; The production process of the austenitic stainless steel pipe is also provided:

[0032] (1): Proportion the components according to the requirements, and cold-roll the raw material tube through cold rolling equipment to the intermediate blank tube with the required tube outer diameter and wall thickness. The error of the outer diameter of the tube is ±0.25mm, and the error of the wall thickness is ±0.22mm ; (2): Carry out the first heat treatment to the billet tube, the heat treatment sequence is: first carry out a quenching and tempering treatment, then carry o...

Embodiment 3

[0034] This embodiment provides an austenitic stainless steel pipe, the mass percent of its components is: C: 0.05%, S: 0.012%, P: 0.022%, Si: 0.37%, Mn: 1.88%, Ni: 8.4%, Cr: 19.7%, Ti: 0.64%, Cu: 0.03%, B: 0.06%, Co: 0.03%, Mo: 3.4%, V: 2.86%, composite rare earth: 4.7%, and the balance is Fe; The mass percent of components is: Er: 12.6%, Ho: 5.4%, Dy: 3%, Ac: 6.4%, Ce: 14%, Eu: 17%, Tb: 8.8%, and the balance is Lu; The production process of the austenitic stainless steel pipe is also provided:

[0035] (1): Proportion the components according to the requirements, and cold-roll the raw material tube through cold rolling equipment to the intermediate blank tube with the required tube outer diameter and wall thickness. The error of the outer diameter of the tube is ±0.25mm, and the error of the wall thickness is ±0.22mm ; (2): Carry out the first heat treatment to the billet tube, the heat treatment sequence is: first carry out a quenching and tempering treatment, then carry o...

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Abstract

The invention discloses a 06Cr19Ni10N austenite stainless steel tube, which comprises the following components in percentage by weight: 0.04-0.06% of C, 0.010-0.015% of S, 0.020-0.024% of P, 0.35-0.38% of Si, 1.85-1.90% of Mn, 8.2-8.5% of Ni, 19.5-19.8% of Cr, 0.63-0.65% of Ti, 0.02-0.04% of Cu, 0.05-0.08% of B, 0.02-0.04% of Co, 3.2-3.5% of Mo, 2.85-2.90% of V, 4.6-4.8% of composite rare earth, and the balance of Fe. The 06Cr19Ni10N austenite stainless steel tube disclosed by the invention is good in anti-oxidation property, high in tensile strength and yield strength, smooth in surface, good in abrasive resistance and attractive in appearance.

Description

technical field [0001] The invention relates to a stainless steel pipe, in particular to an austenitic stainless steel pipe, a production process and a curing method thereof. Background technique [0002] my country has become a big country in the production and consumption of steel pipes, but there is a large gap between the level of equipment and product quality and that of advanced developed countries, especially the small-diameter seamless capillary stainless steel pipes have high technical content and are difficult to manufacture. For a long time, they have been monopolized by foreign countries. , mainly Japan, France, Germany and the United States, etc. my country basically relies on imports, but expensive raw materials and supporting import costs will largely restrict my country's productivity level and even affect the healthy development of the entire industry; , Due to the unreasonable composition and process, the seamless capillary stainless steel tube has poor oxida...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/58C21D8/10
CPCC21D8/10C22C38/42C22C38/44C22C38/46C22C38/50C22C38/52C22C38/54C22C38/58
Inventor 郁宇新
Owner WUXI XINCHANG STEEL PIPE
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