CN113388790B - 06Cr19Ni10N austenitic stainless steel pipe and production process thereof - Google Patents
06Cr19Ni10N austenitic stainless steel pipe and production process thereof Download PDFInfo
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- CN113388790B CN113388790B CN202110636598.3A CN202110636598A CN113388790B CN 113388790 B CN113388790 B CN 113388790B CN 202110636598 A CN202110636598 A CN 202110636598A CN 113388790 B CN113388790 B CN 113388790B
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- steel pipe
- stainless steel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/083—Deburring
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the field of stainless steel pipes, and particularly discloses a 06Cr19Ni10N austenitic stainless steel pipe and a production process thereof, wherein the austenitic stainless steel pipe comprises the following components in percentage by mass: p:0.021-0.05%, S:0.009-0.014%, C:0.15-0.25%, mn:3.8-4.5%, si:0.08-0.12%, cr:15-27%, ni:8-16%, N:0.12-0.27%, co:0.018-0.025%, cu:5-10%, the balance being iron. Cu and Co are added into the stainless steel material, and the Cu has high heat conductivity, strong chemical stability, high tensile strength, easy fusion, corrosion resistance, plasticity and ductility. Make the holistic performance of steel pipe after the preparation obtain promoting, have certain toughness in the use, follow-up convenient to use is swift, can adapt to the use of multiple environment, and is not fragile in the use, and the security performance obtains promoting.
Description
Technical Field
The invention relates to a stainless steel pipe, in particular to a 06Cr19Ni10N austenitic stainless steel pipe and a production process thereof, and belongs to the field of stainless steel pipes.
Background
The austenitic pipe has weldability, but one of very important characteristics of wide application can be obtained, and the austenitic pipe is not easy to deform and the welding position is kept firm during welding. And has good ductility and plasticity, and is not easy to deform after molding. The austenite pipe is widely used in the stainless steel pipe, and has good service performance in various environments.
However, the conventional austenitic stainless steel is insufficient in ductility and toughness, and is easily damaged after being subjected to external force during use. In addition, the efficiency of cleaning burrs and other impurities outside the pipeline in the machining process is low, the cleaning is insufficient, and particularly, the phenomenon of unevenness easily occurs at the welding seam.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a 06Cr19Ni10N austenitic stainless steel pipe and a production process thereof.
The purpose of the invention can be realized by the following technical scheme:
a06 Cr19Ni10N austenitic stainless steel pipe comprises the following components in percentage by mass: p:0.021-0.05%, S:0.009-0.014%, C:0.15-0.25%, mn:3.8-4.5%, si:0.08-0.12%, cr:15-27%, ni:8-16%, N:0.12-0.27%, co:0.018 to 0.025%, cu:5-10%, the balance being iron.
Optionally, the austenitic stainless steel pipe comprises the following components in percentage by mass: p:0.03%, S:0.01%, C:0.18%, mn:4.1%, si:0.10%, cr:20%, ni:11%, N:0.15%, co:0.022%, cu:8 percent, and the balance being iron.
Optionally, the austenitic stainless steel pipe comprises the following components in percentage by mass: p:0.028%, S:0.012%, C:0.13%, mn:4.3%, si:0.11%, cr:22%, ni:14%, N:0.18%, co:0.022%, cu:7% and the balance iron.
A production process of 06Cr19Ni10N austenitic stainless steel pipe comprises the following steps: the method comprises the following steps of steel plate pretreatment, steel plate roll-turning forming, welding, first acid cleaning, first water cleaning, burr cleaning, heat treatment, molding, second acid cleaning, second water cleaning, flaw detection, third acid cleaning, code spraying and packaging.
Optionally, before deburring, polishing the weld joint of the preliminarily formed steel pipe by using a polishing machine, wherein the weld joint and the outer wall of the steel pipe are on the same circumferential surface; and after polishing, performing burr treatment on the outer wall of the steel pipe by using shot blasting equipment.
Optionally, the diameter of shot blasting particles adopted by the shot blasting equipment during grinding is 2-10mm, the shot blasting speed is 5m/h, the shot blasting time is 30-80min, and the outer wall of the steel pipe is ground by a grinding machine after shot blasting.
Optionally, during the molding, a straightening instrument is used for straightening the steel pipe after the heat treatment, and before the straightening, if the steel pipe is in a soft state, solution treatment is performed firstly.
Optionally, the solution treatment process is as follows: inserting a quartz tube with the outer diameter size matched with the inner diameter of the steel tube into the stainless steel tube after heat treatment, then placing the stainless steel tube into a heating furnace in a helium environment, firstly heating to 1100 ℃ from room temperature at the heating rate of 120 ℃/min, preserving heat for 35-58 min, then rapidly cooling to room temperature at the cooling rate of 450 ℃/min, keeping for 0.8-1.7 h, discharging, and then cooling with water for 10-20min.
The invention has the beneficial effects that:
1. cu and Co are added into stainless steel material, and Cu has high heat conductivity, strong chemical stability, high tensile strength, easy fusion, corrosion resistance, plasticity and ductility. Make the holistic performance of steel pipe after the preparation obtain promoting, have certain toughness in the use, follow-up convenient to use is swift, can adapt to the use of multiple environment, and is not fragile in the use, and the security performance obtains promoting. Co does not react with water at normal temperature and is stable in humid air. Co is oxidized at high temperature and is oxidized to generate CoO when being heated to more than 300 ℃ in the air, and an oxide film is formed outside the steel pipe, thereby being beneficial to the protection of the steel pipe. Co is an amphoteric metal, relatively hard, similar to iron and nickel in terms of hardness, tensile strength, machinability, thermodynamic properties, electrochemical behavior, and can be matched with other materials in the steel pipe.
2. Through adopting the shot blasting machine to carry out burr treatment in the processing, the efficiency of burr treatment is higher, and the more abundant of processing, the steel pipe outside is comparatively complete smooth, obtains improving of the quality of steel pipe. And the step of solid solution treatment is added before the alignment according to the requirement, so that the subsequent alignment step is easier to carry out, the alignment size is more accurate, and the subsequent working efficiency can be improved.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: the embodiment provides a 06Cr19Ni10N austenitic stainless steel pipe, which comprises the following components in percentage by mass: p:0.03%, S:0.01%, C:0.18%, mn:4.1%, si:0.10%, cr:20%, ni:11%, N:0.15%, co:0.022%, cu:8 percent, and the balance being iron.
The production process comprises the following steps: the method comprises the following steps of steel plate pretreatment, steel plate roll-turning forming, welding, first acid cleaning, first water cleaning, burr cleaning, heat treatment, molding, second acid cleaning, second water cleaning, flaw detection, third acid cleaning, code spraying and packaging.
Before the burrs are cleaned, the preliminarily molded steel pipe is polished at a welding seam by a polisher, and the welding seam and the outer wall of the steel pipe are positioned on the same circumferential surface; and after polishing, performing burr treatment on the outer wall of the steel pipe by using shot blasting equipment.
The diameter of shot blasting particles adopted by the shot blasting equipment during polishing is 5mm, the shot blasting speed is 5m/h, the shot blasting time is 35min, and the outer wall of the steel pipe is polished by a polisher after shot blasting.
And straightening the heat-treated steel pipe by adopting a straightening instrument during the molding, and performing solid solution treatment on the steel pipe before straightening if the steel pipe is in a soft state.
The solid solution treatment process comprises the following steps: inserting a quartz tube with the outer diameter size matched with the inner diameter of the steel tube into the stainless steel tube after heat treatment, then placing the stainless steel tube in a heating furnace in a helium environment, firstly heating the stainless steel tube from room temperature to 1100 ℃ at the heating rate of 120 ℃/min, preserving the temperature for 50min, then rapidly cooling the stainless steel tube to the room temperature at the cooling rate of 450 ℃/min, keeping the temperature for 1.2h, discharging the stainless steel tube, and then cooling the stainless steel tube by water for 18min.
The second implementation: the embodiment provides a 06Cr19Ni10N austenitic stainless steel pipe, which comprises the following components in percentage by mass: p:0.028%, S:0.012%, C:0.13%, mn:4.3%, si:0.11%, cr:22%, ni:14%, N:0.18%, co:0.022%, cu:7% and the balance iron.
The production process comprises the following steps: the method comprises the following steps of steel plate pretreatment, steel plate roll-turning forming, welding, first acid cleaning, first water cleaning, burr cleaning, heat treatment, molding, second acid cleaning, second water cleaning, flaw detection, third acid cleaning, code spraying and packaging.
Before the burrs are cleaned, the preliminarily molded steel pipe is polished at a welding seam by a polisher, and the welding seam and the outer wall of the steel pipe are positioned on the same circumferential surface; and after polishing, performing burr treatment on the outer wall of the steel pipe by using shot blasting equipment.
The diameter of shot blasting particles adopted by the shot blasting equipment during polishing is 8mm, the shot blasting speed is 5m/h, the shot blasting time is 50min, and the outer wall of the steel pipe is polished by a polisher after shot blasting.
And straightening the heat-treated steel pipe by adopting a straightening instrument during the molding, and carrying out solution treatment on the steel pipe before straightening if the steel pipe is in a soft state.
The solid solution treatment process comprises the following steps: inserting a quartz tube with the outer diameter size matched with the inner diameter of the steel tube into the stainless steel tube after heat treatment, then placing the stainless steel tube in a heating furnace in a helium environment, firstly heating the stainless steel tube from room temperature to 1100 ℃ at the heating rate of 120 ℃/min, preserving the temperature for 40min, then rapidly cooling the stainless steel tube to the room temperature at the cooling rate of 450 ℃/min, keeping the temperature for 0.9h, discharging the stainless steel tube, and then cooling the stainless steel tube by water for 15min.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A06 Cr19Ni10N austenitic stainless steel pipe is characterized by comprising the following components in percentage by mass: p:0.021-0.05%, S:0.009-0.014%, C:0.15-0.25%, mn:3.8-4.5%, si:0.08-0.12%, cr:15-27%, ni:8-16%, N:0.12-0.27%, co:0.018 to 0.025%, cu:5-10%, the balance being iron.
2. The 06Cr19Ni10N austenitic stainless steel pipe of claim 1, characterized by, that, the austenitic stainless steel pipe comprises the following components by weight percent: p:0.03%, S:0.01%, C:0.18%, mn:4.1%, si:0.10%, cr:20%, ni:11%, N:0.15%, co:0.022%, cu:8 percent, and the balance being iron.
3. A process for the production of an austenitic stainless steel 06Cr19Ni10N pipe according to any of claims 1-2, characterized in that it comprises the following steps: the method comprises the following steps of steel plate pretreatment, steel plate roll-turning forming, welding, first acid cleaning, first water cleaning, burr cleaning, heat treatment, molding, second acid cleaning, second water cleaning, flaw detection, third acid cleaning, code spraying and packaging.
4. The process for producing an austenitic stainless steel tube (06 Cr19Ni 10N) according to claim 1, wherein the preliminarily formed steel tube is ground at the weld joint by a grinding machine before the deburring, the weld joint and the outer wall of the steel tube being on the same circumferential surface; and after polishing, performing burr treatment on the outer wall of the steel pipe by using shot blasting equipment.
5. The production process of the 06Cr19Ni10N austenitic stainless steel pipe as claimed in claim 4, wherein the shot blasting device adopts shot blasting particles with diameter of 2-10mm during grinding, shot blasting speed of 5m/h and shot blasting time of 30-80min, and the outer wall of the steel pipe is ground by a grinding machine after shot blasting.
6. The process for producing the 06Cr19Ni10N austenitic stainless steel pipe according to the claim 5, characterized in that, the steel pipe after heat treatment is straightened by a straightening apparatus during the shaping, and if the steel pipe is soft before straightening, the steel pipe is treated by solution treatment.
7. The process for producing the 06Cr19Ni10N austenitic stainless steel pipe according to the claim 6, characterized in that, the process of solution treatment is: inserting a quartz tube with the outer diameter size matched with the inner diameter of the steel tube into the stainless steel tube after heat treatment, then placing the stainless steel tube into a heating furnace in a helium environment, firstly heating to 1100 ℃ from room temperature at the heating rate of 120 ℃/min, preserving heat for 35-58 min, then rapidly cooling to room temperature at the cooling rate of 450 ℃/min, keeping for 0.8-1.7 h, discharging, and then cooling with water for 10-20min.
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| CN202110636598.3A CN113388790B (en) | 2021-06-08 | 2021-06-08 | 06Cr19Ni10N austenitic stainless steel pipe and production process thereof |
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| CN202110636598.3A CN113388790B (en) | 2021-06-08 | 2021-06-08 | 06Cr19Ni10N austenitic stainless steel pipe and production process thereof |
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