CN110527924A - A kind of hydrogen environment 2D stainless steel bend and preparation method - Google Patents
A kind of hydrogen environment 2D stainless steel bend and preparation method Download PDFInfo
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- CN110527924A CN110527924A CN201910915928.5A CN201910915928A CN110527924A CN 110527924 A CN110527924 A CN 110527924A CN 201910915928 A CN201910915928 A CN 201910915928A CN 110527924 A CN110527924 A CN 110527924A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D9/085—Cooling or quenching
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
- F16L43/001—Bends; Siphons made of metal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of hydrogen environment 2D stainless steel bends, are grouped as by following mass percent group, wherein, Ni 4-8%, Cr 20-25%, C 0.02-0.05%, Mn 0.4-0.7%, V 0.02-0.06%, Si 1.0-1.4%, Nb 0.05-0.1%, Ti 0.04-0.08%, N 0.06-0.09%, S 0.005-0.01%, P 0.005-0.012%, surplus are Fe and other inevitable impurity；The invention also discloses a kind of hydrogen environment preparation methods of 2D stainless steel bend, in turn include the following steps: S1: pipe fitting preparation, S2: tempering, S3: surface treatment, S4: pipe fitting selection, S5: bend pipe preparation, S6: solution hardening processing, S7: post-processing.2D stainless steel bend made from the constituent component and preparation method of stainless steel bend provided by the invention has excellent corrosion resistant performance, long service life under hydrogen environment.
Description
Technical field
The present invention relates to a kind of hydrogen environment 2D stainless steel bend and preparation methods, belong to stainless steel bend technology of preparing neck
Domain.
Background technique
In pipe-line system, elbow is the pipe fitting for changing pipeline direction；Angularly divide, have 45 ° and 90 ° 180 ° three kinds most often
, further include 60 ° of other equal improper angle elbows according further to requirement of engineering, divide by its radius of curvature: can be divided into
Major radius elbow and short radius elbow, major radius elbow refer to the outer diameter of the pipe of its radius of curvature equal to 1.5 times, i.e. R=
1.5D；Short radius elbow refers to that its radius of curvature is equal to tube outer diameter, i.e. R=1.0D(D is elbow diameter, and R is radius of curvature)；
The material of elbow has cast iron, stainless steel, steel alloy, malleable cast iron, carbon steel, non-ferrous metal and plastics etc.；It is used under existing hydrogen environment
Elbow is mostly stainless steel bend, but using effect of the existing stainless steel bend under hydrogen environment be not it is especially desirable, because of environment
Complexity causes the service life of elbow shorter.
Summary of the invention
To solve the deficiencies in the prior art, the present invention provides a kind of hydrogen environment 2D stainless steel bend and preparation method, by
2D stainless steel bend made from the constituent component and preparation method has excellent corrosion resistant performance, service life under hydrogen environment
It is long.
The technical scheme adopted by the invention is as follows:
A kind of hydrogen environment 2D stainless steel bend, stainless steel bend are grouped as by following mass percent group, wherein Ni 4-
8%, Cr 20-25%, C 0.02-0.05%, Mn 0.4-0.7%, V 0.02-0.06%, Si 1.0-1.4%, Nb 0.05-
0.1%, Ti 0.04-0.08%, N 0.06-0.09%, S 0.005-0.01%, P 0.005-0.012%, surplus be Fe and
Other inevitable impurity.
A kind of hydrogen environment preparation method of 2D stainless steel bend, includes the following steps:
S1: pipe fitting preparation: each constituent component of stainless steel bend is put into smelting furnace according to the ratio, and is passed through argon gas, is then heated up
To 2100-2200 DEG C, mixed liquor is made in component melts, is injected after mixed liquor obtained is then cooled to 1400-1500 DEG C
In mold, and molding is stood in the case where neon protects atmosphere, pipe fitting is made；
S2: tempering: pipe fitting obtained in S1 is warming up to 750-800 DEG C, and is cooled to 400-450 DEG C again after keeping the temperature 1-2h
After keep the temperature 2-3h；
S3: it surface treatment: successively polished the pipe fitting in S2 after tempering, polished, Shot Blasting；
S4: pipe fitting is chosen: choosing the pipe fitting in S3 after surface treatment, tube surface answers smooth no scuffing；
S5: bend pipe preparation: the pipe fitting chosen in S4 is placed on Induction Heating bending machine and carries out the obtained stainless steel bend of bend pipe；
S6: solution hardening processing: stainless steel bend obtained in S5 is quenched；
S7: post-processing: the stainless steel bend after being quenched in S6 is post-processed.
Preferably, Induction Heating bending machine is mid frequency induction heating pipebender in step S5.
Further preferred, the electric heating temperature of Induction Heating bending machine is 900-980 DEG C in step S5.
It is further preferred, protection zone is formed using nitrogen when Induction Heating bending machine is to pipe fitting bending in step S5.
Further preferred, solution hardening processing is that stainless steel bend is warming up to 1000-1050 DEG C and is protected in step S6
Water cooling is carried out after warm 2-3h.
Further preferred, post-processing includes to stainless steel bend zinc-plated processing in step S7.
Further preferred, post-processing further includes the Passivation Treatment to stainless steel bend in step S7.
The beneficial effects of the present invention are:
It is right again after stainless steel pipe is made and stainless steel pipe is tempered and is surface-treated using the component of special ratios
Stainless steel pipe carries out bend pipe processing, improves the qualification rate of product；And solution hardening is carried out to the stainless steel bend after preparation
Processing and post-processing, post-processing further includes having zinc-plated processing and Passivation Treatment, improves the corrosion resistance of stainless steel bend
And ageing resistance, extend service life of the stainless steel bend under hydrogen environment.
Specific embodiment
Specific introduction is done to the present invention below with reference to embodiment.
Embodiment 1: a kind of hydrogen environment 2D stainless steel bend, stainless steel bend are grouped as by following mass percent group,
Wherein, Ni 4%, Cr 20%, C 0.02%, Mn 0.4%, V 0.02%, Si 1.0%, Nb 0.05%, Ti 0.04%, N
0.06%, S 0.005%, P 0.005%, surplus are Fe and other inevitable impurity.
A kind of preparation method of hydrogen environment 2D stainless steel bend, preparation method include the following steps:
S1: pipe fitting preparation: each constituent component of stainless steel bend is put into smelting furnace according to the ratio, and is passed through argon gas, is then heated up
To 2100 DEG C, mixed liquor is made in component melts, is injected in mold after mixed liquor obtained is then cooled to 1400 DEG C, and
Neon, which is protected, stands molding under atmosphere, pipe fitting is made；
S2: tempering: being warming up to 750 DEG C for pipe fitting obtained in S1, and keep the temperature be cooled to 400 DEG C again after 1h after keep the temperature 2h；
S3: it surface treatment: successively polished the pipe fitting in S2 after tempering, polished, Shot Blasting；
S4: pipe fitting is chosen: choosing the pipe fitting in S3 after surface treatment, tube surface answers smooth no scuffing；
S5: bend pipe preparation: the pipe fitting chosen in S4 is placed on Induction Heating bending machine and carries out the obtained stainless steel bend of bend pipe；
S6: solution hardening processing: stainless steel bend obtained in S5 is quenched；
S7: post-processing: the stainless steel bend after being quenched in S6 is post-processed.
In the present embodiment, Induction Heating bending machine is mid frequency induction heating pipebender in step S5.
In the present embodiment, the electric heating temperature of Induction Heating bending machine is 900 DEG C in step S5.
In the present embodiment, protection zone is formed using nitrogen when Induction Heating bending machine is to pipe fitting bending in step S5.
In the present embodiment, stainless steel bend is is warming up to 1000 DEG C and to keep the temperature 2h laggard by solution hardening processing in step S6
Row water cooling.
In the present embodiment, post-processing includes to stainless steel bend zinc-plated processing in step S7；It post-processes in step S7 and also wraps
Include the Passivation Treatment to stainless steel bend.
Embodiment 2: a kind of hydrogen environment 2D stainless steel bend, stainless steel bend are grouped as by following mass percent group,
Wherein, Ni 6%, Cr 23%, C 0.04%, Mn 0.6%, V 0.04%, Si 1.2%, Nb 0.08%, Ti 0.06%, N
0.07%, S 0.008%, P 0.008%, surplus are Fe and other inevitable impurity.
A kind of hydrogen environment preparation method of 2D stainless steel bend, includes the following steps:
S1: pipe fitting preparation: each constituent component of stainless steel bend is put into smelting furnace according to the ratio, and is passed through argon gas, is then heated up
To 2150 DEG C, mixed liquor is made in component melts, is injected in mold after mixed liquor obtained is then cooled to 1450 DEG C, and
Neon, which is protected, stands molding under atmosphere, pipe fitting is made；
S2: tempering: being warming up to 780 DEG C for pipe fitting obtained in S1, and keep the temperature be cooled to 430 DEG C again after 1.5h after keep the temperature
2.5h；
S3: it surface treatment: successively polished the pipe fitting in S2 after tempering, polished, Shot Blasting；
S4: pipe fitting is chosen: choosing the pipe fitting in S3 after surface treatment, tube surface answers smooth no scuffing；
S5: bend pipe preparation: the pipe fitting chosen in S4 is placed on Induction Heating bending machine and carries out the obtained stainless steel bend of bend pipe；
S6: solution hardening processing: stainless steel bend obtained in S5 is quenched；
S7: post-processing: the stainless steel bend after being quenched in S6 is post-processed.
In the present embodiment, Induction Heating bending machine is mid frequency induction heating pipebender in step S5.
In the present embodiment, the electric heating temperature of Induction Heating bending machine is 950 DEG C in step S5.
In the present embodiment, protection zone is formed using nitrogen when Induction Heating bending machine is to pipe fitting bending in step S5.
In the present embodiment, after stainless steel bend is is warming up to 1030 DEG C and keeps the temperature 2.5h by solution hardening processing in step S6
Carry out water cooling.
In the present embodiment, post-processing includes to stainless steel bend zinc-plated processing in step S7；It post-processes in step S7 and also wraps
Include the Passivation Treatment to stainless steel bend.
Embodiment 3: a kind of hydrogen environment 2D stainless steel bend, stainless steel bend are grouped as by following mass percent group,
Wherein, Ni 8%, Cr 25%, C 0.05%, Mn 0.7%, V 0.06%, Si 1.4%, Nb 0.1%, Ti 0.08%, N
0.09%, S 0.01%, P 0.012%, surplus are Fe and other inevitable impurity.
A kind of hydrogen environment preparation method of 2D stainless steel bend, includes the following steps:
S1: pipe fitting preparation: each constituent component of stainless steel bend is put into smelting furnace according to the ratio, and is passed through argon gas, is then heated up
To 2200 DEG C, mixed liquor is made in component melts, is injected in mold after mixed liquor obtained is then cooled to 1500 DEG C, and
Neon, which is protected, stands molding under atmosphere, pipe fitting is made；
S2: tempering: being warming up to 800 DEG C for pipe fitting obtained in S1, and keep the temperature be cooled to 450 DEG C again after 2h after keep the temperature 3h；
S3: it surface treatment: successively polished the pipe fitting in S2 after tempering, polished, Shot Blasting；
S4: pipe fitting is chosen: choosing the pipe fitting in S3 after surface treatment, tube surface answers smooth no scuffing；
S5: bend pipe preparation: the pipe fitting chosen in S4 is placed on Induction Heating bending machine and carries out the obtained stainless steel bend of bend pipe；
S6: solution hardening processing: stainless steel bend obtained in S5 is quenched；
S7: post-processing: the stainless steel bend after being quenched in S6 is post-processed.
In the present embodiment, Induction Heating bending machine is mid frequency induction heating pipebender in step S5.
In the present embodiment, the electric heating temperature of Induction Heating bending machine is 980 DEG C in step S5.
In the present embodiment, protection zone is formed using nitrogen when Induction Heating bending machine is to pipe fitting bending in step S5.
In the present embodiment, stainless steel bend is is warming up to 1050 DEG C and to keep the temperature 3h laggard by solution hardening processing in step S6
Row water cooling.
In the present embodiment, post-processing includes to stainless steel bend zinc-plated processing in step S7.
In the present embodiment, post-processing further includes the Passivation Treatment to stainless steel bend in step S7.
The above is only the preferred embodiment of the invention patent, it is noted that for the common skill of the art
For art personnel, under the premise of not departing from the invention patent principle, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the patent of the present invention.
Claims (8)
1. a kind of hydrogen environment 2D stainless steel bend, it is characterised in that: the stainless steel bend is by following mass percent component
Composition, wherein Ni 4-8%, Cr 20-25%, C 0.02-0.05%, Mn 0.4-0.7%, V 0.02-0.06%, Si
1.0-1.4%, Nb 0.05-0.1%, Ti 0.04-0.08%, N 0.06-0.09%, S 0.005-0.01%, P 0.005-
0.012%, surplus is Fe and other inevitable impurity.
2. based on a kind of preparation method of hydrogen environment 2D stainless steel bend described in claim 1, which is characterized in that the system
Preparation Method includes the following steps:
S1: pipe fitting preparation: each constituent component of stainless steel bend is put into smelting furnace according to the ratio, and is passed through argon gas, is then heated up
To 2100-2200 DEG C, mixed liquor is made in component melts, is injected after mixed liquor obtained is then cooled to 1400-1500 DEG C
In mold, and molding is stood in the case where neon protects atmosphere, pipe fitting is made；
S2: tempering: pipe fitting obtained in S1 is warming up to 750-800 DEG C, and is cooled to 400-450 DEG C again after keeping the temperature 1-2h
After keep the temperature 2-3h；
S3: it surface treatment: successively polished the pipe fitting in S2 after tempering, polished, Shot Blasting；
S4: pipe fitting is chosen: choosing the pipe fitting in S3 after surface treatment, tube surface answers smooth no scuffing；
S5: bend pipe preparation: the pipe fitting chosen in S4 is placed on Induction Heating bending machine and carries out the obtained stainless steel bend of bend pipe；
S6: solution hardening processing: stainless steel bend obtained in S5 is quenched；
S7: post-processing: the stainless steel bend after being quenched in S6 is post-processed.
3. a kind of preparation method of hydrogen environment 2D stainless steel bend according to claim 2, which is characterized in that the step
Induction Heating bending machine is mid frequency induction heating pipebender in rapid S5.
4. a kind of preparation method of hydrogen environment 2D stainless steel bend according to claim 2, which is characterized in that the step
The electric heating temperature of Induction Heating bending machine is 900-980 DEG C in rapid S5.
5. a kind of preparation method of hydrogen environment 2D stainless steel bend according to claim 2, which is characterized in that the step
Protection zone is formed using nitrogen when Induction Heating bending machine is to pipe fitting bending in rapid S5.
6. a kind of preparation method of hydrogen environment 2D stainless steel bend according to claim 2, which is characterized in that the step
Solution hardening processing is that stainless steel bend is warming up to 1000-1050 DEG C and carries out water cooling after keeping the temperature 2-3h in rapid S6.
7. a kind of preparation method of hydrogen environment 2D stainless steel bend according to claim 2, which is characterized in that the step
Post-processing includes to stainless steel bend zinc-plated processing in rapid S7.
8. a kind of preparation method of hydrogen environment 2D stainless steel bend according to claim 2, which is characterized in that the step
Post-processing further includes the Passivation Treatment to stainless steel bend in rapid S7.
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| CN201910915928.5A CN110527924A (en) | 2019-09-26 | 2019-09-26 | A kind of hydrogen environment 2D stainless steel bend and preparation method |
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| CN201910915928.5A CN110527924A (en) | 2019-09-26 | 2019-09-26 | A kind of hydrogen environment 2D stainless steel bend and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935038A (en) * | 2021-01-23 | 2021-06-11 | 广东思豪内高压科技有限公司 | Production process of stainless steel bent pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935038A (en) * | 2021-01-23 | 2021-06-11 | 广东思豪内高压科技有限公司 | Production process of stainless steel bent pipe |
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Application publication date: 20191203 |