CN103045961A - Anchoring flange and manufacturing process thereof - Google Patents
Anchoring flange and manufacturing process thereof Download PDFInfo
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- CN103045961A CN103045961A CN2012105612240A CN201210561224A CN103045961A CN 103045961 A CN103045961 A CN 103045961A CN 2012105612240 A CN2012105612240 A CN 2012105612240A CN 201210561224 A CN201210561224 A CN 201210561224A CN 103045961 A CN103045961 A CN 103045961A
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Abstract
The invention discloses an anchoring flange and a manufacturing process thereof. The anchoring flange comprises the following chemical components: 0.25-0.35% of C, 0.35-0.45% of Si, 0.35-0.55% of Mn, 2-4% of Ni, 7-9% of Cr, 0.35-0.55% of Nb, 0.55-0.75% of Cu, 0.08-0.09% of N, 0.09-0.11% of Mo, 0.4-0.6% of Al, 0.04-0.06% of S, 0.05-0.07% of Ti, 0.05-0.07% of V, 0.005-0.007% of B, 9-12% of lanthanide rare earth and the balance of Fe. By a heat treatment procedure of twice normalizing plus once tempering and plus cooling, after twice normalizing, the banded structure of the flange and other defects are significantly reduced, the structure is thinned and uniform, and the tensile strength, the yield strength, the toughness and the low-temperature impact performance are greatly improved.
Description
Technical field
The present invention relates to a kind of flange and manufacturing process, specifically a kind of anchoring flange and manufacturing process thereof.
Background technology
Flange (Flange) is again ring flange or flange.Flange is to make pipe and the interconnective part of pipe, is connected in pipe end; The flange that also has the equipment that is used in to import and export is used for the connection between two equipment, such as the step-down gear flange.Flange connects or flanged coupling, refers to interconnect releasable connection as one group of combined sealing structure by flange, pad and bolt three, and pipe flange means the flange that pipe arrangement is used in the plumbing installation, is used in the import and export flange that means equipment on the equipment.Perforation on the flange, bolt are close to two flanges.Seal with liner between flange.Flange divides be threaded (screwed connection) flange and welding flange and clip flange.
The material of flange generally has: carbon steel, steel alloy and stainless steel; Anchoring flange is the key part of long-range pipeline gas transmission (oil) engineering, be welded on gas transmission (oil) main pipe line, and fix with clump, partly bury or entirely be embedded in underground, to prevent by deadweight, interior pressure, the temperature difference, pipeline to the pipeline excess in displacement that causes with comprehensive action power such as orientation variations.Because large, the interior pressure of anchoring flange bore is high, applying working condition is abominable, safety requirements is higher, thereby requires high to working reliability; Because it is underground that anchoring flange partly buries or entirely is embedded in, thereby corrosion resistance there are special requirement.Anchoring flange not only requires tensile strength good, and yield strength is high, and surfaceness is little, and requires to have very strong corrosion resistance; And in the high prior art, because the restriction of composition and thermal treatment process, thereby cause flange tensile strength not high, high-yield strength is not high, surfaceness is higher, and has the problems such as tissue looseness, pore, trachoma, and corrosion resistance is not high, do not satisfy the service requirements of anchoring flange, or work-ing life is shorter.
Summary of the invention
Technical problem to be solved by this invention is:
How to guarantee that flange has outstanding corrosion resistance is arranged;
How to guarantee that flange has high-tensile and high-yield strength;
How to guarantee that flange has less surfaceness, organize more uniform and stable, few pore and trachoma.
The technical scheme that the present invention solves above technical problem is:
A kind of anchoring flange, the mass percent of its chemical ingredients is: C:0.25-0.35%, Si:0.35-0.45%, Mn:0.35-0.55%, Ni:2-4%, Cr:7-9%, Nb:0.35-0.55%, Cu:0.55-0.75%, N:0.08-0.09%, Mo:0.09-0.11%, Al:0.4-0.6%, S:0.04-0.06%, Ti:0.05-0.07%, V:0.05-0.07%, B:0.005-0.007%, lanthanide rare: 9-12%, surplus is Fe.
The manufacturing process of anchoring flange, undertaken by following operation: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-ultrasonic testing-mechanicl test-machine finshing is to desired shape and size-end treatment;
Heat treatment step adopts double normalizing+one time tempering+cooling, and normalizing temperature is greater than the normalizing temperature second time for the first time;
For the first time normalizing: adopt zone heating, the first paragraph Heating temperature is 700-750 ℃, and to the rear insulation of temperature 10-15min, the second segment Heating temperature is 850-880 ℃, is incubated 35-40min after temperature, then carries out the normalizing second time behind the air cooling 10-15min;
For the second time normalizing: adopt zone heating, the first paragraph Heating temperature is 600-650 ℃ of heating, and to the rear insulation of temperature 15-18min, the second segment Heating temperature is 660-690 ℃ of heating, is incubated 20-30min after temperature, and then water-cooled is to room temperature;
Tempering: tempering temperature 620-640 ℃, after temperature, be incubated 10-15min, then cool off;
The method that cooling adopts water-cooled to be combined with air cooling, adopt first water-cooled with the rate of cooling of 1-3 ℃/s with the steel plate water-cooled to 500-550 ℃, then air cooling is to 430-460 ℃, adopt again water-cooled with the rate of cooling of 4-5 ℃/s with the steel plate water-cooled to room temperature.
In the above operation: steel billet blanking, forging, forging size and surface inspection, mechanical roughing, ultrasonic testing, mechanicl test, machine finshing to desired shape and size and end treatment all used existing conventional process.
The technical scheme that the present invention further limits is:
Aforesaid anchoring flange, the constituent mass per-cent of lanthanide rare is: lanthanum: 16-19%, cerium: 20-34%, samarium: 11-13%, neodymium: 6-9%, gadolinium: 13-15%, praseodymium: 5-9%, dysprosium: 11-13%, all the other lanthanon: 3-5%, more than each component sum be 100%.
Advantage of the present invention is:
The present invention is by the restriction of composition and processing parameter, particularly add an amount of lanthanide series rare-earth elements, and the heat treatment step of double normalizing+one time tempering+cooling, both avoided carbide separating out at intergranular, prevent again simultaneously carburizing and the nitriding of heat treatment process, guaranteed the corrosion resistance of material; The defectives such as banded structure of flange are alleviated obviously, and structure refinement is even; A tempering after the normalizing is organized more uniform and stablely, and more refinement of crystal grain is greatly improved tensile strength, yield strength, toughness and the low temperature impact properties of flange; Adopt the process for cooling of characteristics after the tempering, prevented carburizing and the nitriding of heat treatment process, guaranteed the corrosion resistance of material.
The present invention for the first time normalizing temperature is higher than for the second time normalizing temperature, makes for the second time normalizing not destroy the effect of for the first time normalizing, makes tissue thinning effect more obvious; Zone heating is taked in normalizing, and second segment heating can reduce temperature poor of surface and heart section on the basis of first paragraph heating, make thickness of flange direction fine microstructures even; Tempering further reduces the poor of surface and the temperature of heart section after the normalizing, surperficially reaches unanimity to heart section performance thereby make; Cool off after the tempering, the method of being combined with air cooling by water-cooled, first with slower speed of cooling water-cooled, then carry out air cooling, at last again by cooling by water faster to room temperature, not only can improve the toughness of flange and obtain preferably comprehensive mechanical property (specifically can see below the mechanical property of invention advantage part), and make organize more uniform and stable, pore and trachoma seldom occur, guaranteed the corrosion resistance of material.
In a word, the present invention takes zone heating, can effectively shorten the time that adds of high temperature section, makes grain refinement effect more obvious, and the grain fineness number of organizing of thickness direction is reached unanimity; Adopt double normalizing, and normalizing temperature is higher for the first time, can crystal grain thinning, improve simultaneously intensity and toughness, can alleviate or eliminate the defectives such as banded structure, improve flange integral body impact property; A tempering after the normalizing is organized more uniform and stablely, and low temperature impact properties further improves, and surface to heart section performance reaches unanimity; Cooling is combined with air cooling by water-cooled, and the control of the speed by speed of cooling, and makes and organize more uniform and stablely, pore and trachoma seldom occur, and obtains preferably comprehensive mechanical property and corrosion resistance.Flange of the present invention is through NSS test and ASS test, and test-results all has comparatively excellent corrosion resistance nature.
Specific performance of the present invention can see the following form:
Table 1 the present invention and the flange performance index contrast of commonly using
Embodiment
Embodiment 1
The anchoring flange of present embodiment, the mass percent of its chemical ingredients is: C:0.25%, Si:0.35%, Mn:0.55%, Ni:3%, Cr:9%, Nb:0.35%, Cu:0.55%, N:0.08%, Mo:0.09%, Al:0.6%, S:0.06%, Ti:0.05%, V:0.07%, B:0.005%, lanthanide rare: 9%, surplus is Fe; The constituent mass per-cent of described lanthanide rare is: lanthanum: 16%, and cerium: 34%, samarium: 11%, neodymium: 6%, gadolinium: 14%, praseodymium: 5%, dysprosium: 11%, all the other lanthanon: 3%.
The manufacturing process of present embodiment anchoring flange, undertaken by following operation: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-ultrasonic testing-mechanicl test-machine finshing is to desired shape and size-end treatment; Wherein, steel billet blanking, forging, forging size and surface inspection, mechanical roughing, ultrasonic testing, mechanicl test, machine finshing to desired shape and size and end treatment all used existing conventional process;
Heat treatment step adopts double normalizing+one time tempering+cooling, and normalizing temperature is greater than the normalizing temperature second time for the first time;
For the first time normalizing: adopt zone heating, the first paragraph Heating temperature is 700 ℃, and to the rear insulation of temperature 15min, the second segment Heating temperature is 850 ℃, is incubated 40min after temperature, then carries out the normalizing second time behind the air cooling 10min;
For the second time normalizing: adopt zone heating, the first paragraph Heating temperature is 600 ℃ of heating, and to the rear insulation of temperature 15min, the second segment Heating temperature is 660 ℃ of heating, is incubated 20min after temperature, and then water-cooled is to room temperature;
Tempering: 620 ℃ of tempering temperatures are incubated 15min after temperature;
The method that cooling adopts water-cooled to be combined with air cooling, adopt first water-cooled with the rate of cooling of 1 ℃/s with steel plate water-cooled to 500 ℃, air cooling to 430 ℃ then, adopt again water-cooled with the rate of cooling of 4 ℃/s with the steel plate water-cooled to room temperature.
Embodiment 2
The anchoring flange of present embodiment, the mass percent of its chemical ingredients is: C:0.35%, Si:0.45%, Mn:0.35%, Ni:2%, Cr:8%, Nb:0.55%, Cu:0.75%, N:0.09%, Mo:0.11%, Al:0.4%, S:0.04%, Ti:0.06%, V:0.05%, B:0.007%, lanthanide rare: 12%, surplus is Fe; The constituent mass per-cent of described lanthanide rare is: lanthanum: 19%, and cerium: 28%, samarium: 12%, neodymium: 8%, gadolinium: 13%, praseodymium: 5%, dysprosium: 11%, all the other lanthanon: 4%.
The manufacturing process of present embodiment anchoring flange, undertaken by following operation: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-ultrasonic testing-mechanicl test-machine finshing is to desired shape and size-end treatment; Wherein, steel billet blanking, forging, forging size and surface inspection, mechanical roughing, ultrasonic testing, mechanicl test, machine finshing to desired shape and size and end treatment all used existing conventional process;
Heat treatment step adopts double normalizing+one time tempering+cooling, and normalizing temperature is greater than the normalizing temperature second time for the first time;
For the first time normalizing: adopt zone heating, the first paragraph Heating temperature is 720 ℃, and to the rear insulation of temperature 12min, the second segment Heating temperature is 860 ℃, is incubated 37min after temperature, then carries out the normalizing second time behind the air cooling 12min;
For the second time normalizing: adopt zone heating, the first paragraph Heating temperature is 620 ℃ of heating, and to the rear insulation of temperature 16min, the second segment Heating temperature is 670 ℃ of heating, is incubated 25min after temperature, and then water-cooled is to room temperature;
Tempering: 630 ℃ of tempering temperatures are incubated 13min after temperature;
The method that cooling adopts water-cooled to be combined with air cooling, adopt first water-cooled with the rate of cooling of 2 ℃/s with steel plate water-cooled to 530 ℃, air cooling to 440 ℃ then, adopt again water-cooled with the rate of cooling of 4 ℃/s with the steel plate water-cooled to room temperature.
Embodiment 3
The anchoring flange of present embodiment, the mass percent of its chemical ingredients is: C:0.30%, Si:0.40%, Mn:0.45%, Ni:4%, Cr:7%, Nb:0.45%, Cu:0.65%, N:0.08%, Mo:0.10%, Al:0.5%, S:0.05%, Ti:0.07%, V:0.06%, B:0.006%, lanthanide rare: 10%, surplus is Fe; The constituent mass per-cent of described lanthanide rare is: lanthanum: 16%, and cerium: 20%, samarium: 13%, neodymium: 9%, gadolinium: 15%, praseodymium: 9%, dysprosium: 13%, all the other lanthanon: 5%.
The manufacturing process of present embodiment anchoring flange, undertaken by following operation: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-ultrasonic testing-mechanicl test-machine finshing is to desired shape and size-end treatment; Wherein, steel billet blanking, forging, forging size and surface inspection, mechanical roughing, ultrasonic testing, mechanicl test, machine finshing to desired shape and size and end treatment all used existing conventional process;
Heat treatment step adopts double normalizing+one time tempering+cooling, and normalizing temperature is greater than the normalizing temperature second time for the first time;
For the first time normalizing: adopt zone heating, the first paragraph Heating temperature is 750 ℃, and to the rear insulation of temperature 10min, the second segment Heating temperature is 880 ℃, is incubated 35min after temperature, then carries out the normalizing second time behind the air cooling 15min;
For the second time normalizing: adopt zone heating, the first paragraph Heating temperature is 650 ℃ of heating, and to the rear insulation of temperature 15min, the second segment Heating temperature is 690 ℃ of heating, is incubated 20min after temperature, and then water-cooled is to room temperature;
Tempering: 640 ℃ of tempering temperatures are incubated 10min after temperature;
The method that cooling adopts water-cooled to be combined with air cooling, adopt first water-cooled with the rate of cooling of 3 ℃/s with steel plate water-cooled to 550 ℃, air cooling to 460 ℃ then, adopt again water-cooled with the rate of cooling of 5 ℃/s with the steel plate water-cooled to room temperature.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1. anchoring flange, it is characterized in that: the mass percent of its chemical ingredients is: C:0.25-0.35%, Si:0.35-0.45%, Mn:0.35-0.55%, Ni:2-4%, Cr:7-9%, Nb:0.35-0.55%, Cu:0.55-0.75%, N:0.08-0.09%, Mo:0.09-0.11%, Al:0.4-0.6%, S:0.04-0.06%, Ti:0.05-0.07%, V:0.05-0.07%, B:0.005-0.007%, lanthanide rare: 9-12%, surplus is Fe.
2. anchoring flange as claimed in claim 1, it is characterized in that: the constituent mass per-cent of described lanthanide rare is: lanthanum: 16-19%, cerium: 20-34%, samarium: 11-13%, neodymium: 6-9%, gadolinium: 13-15%, praseodymium: 5-9%, dysprosium: 11-13%, all the other lanthanon: 3-5%, more than each component sum be 100%.
3. anchoring flange as claimed in claim 1 or 2, it is characterized in that: the mass percent of its chemical ingredients is: C:0.25%, Si:0.35%, Mn:0.55%, Ni:3%, Cr:9%, Nb:0.35%, Cu:0.55%, N:0.08%, Mo:0.09%, Al:0.6%, S:0.06%, Ti:0.05%, V:0.07%, B:0.005%, lanthanide rare: 9%, surplus is Fe; The constituent mass per-cent of described lanthanide rare is: lanthanum: 16%, and cerium: 34%, samarium: 11%, neodymium: 6%, gadolinium: 14%, praseodymium: 5%, dysprosium: 11%, all the other lanthanon: 3%.
4. anchoring flange as claimed in claim 1 or 2, it is characterized in that: the mass percent of its chemical ingredients is: C:0.35%, Si:0.45%, Mn:0.35%, Ni:2%, Cr:8%, Nb:0.55%, Cu:0.75%, N:0.09%, Mo:0.11%, Al:0.4%, S:0.04%, Ti:0.06%, V:0.05%, B:0.007%, lanthanide rare: 12%, surplus is Fe; The constituent mass per-cent of described lanthanide rare is: lanthanum: 19%, and cerium: 28%, samarium: 12%, neodymium: 8%, gadolinium: 13%, praseodymium: 5%, dysprosium: 11%, all the other lanthanon: 4%.
5. anchoring flange as claimed in claim 1 or 2, it is characterized in that: the mass percent of its chemical ingredients is: C:0.30%, Si:0.40%, Mn:0.45%, Ni:4%, Cr:7%, Nb:0.45%, Cu:0.65%, N:0.08%, Mo:0.10%, Al:0.5%, S:0.05%, Ti:0.07%, V:0.06%, B:0.006%, lanthanide rare: 10%, surplus is Fe; The constituent mass per-cent of described lanthanide rare is: lanthanum: 16%, and cerium: 20%, samarium: 13%, neodymium: 9%, gadolinium: 15%, praseodymium: 9%, dysprosium: 13%, all the other lanthanon: 5%.
6. the manufacturing process of claim 1 or 2 described anchoring flanges, undertaken by following operation: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-ultrasonic testing-mechanicl test-machine finshing is to desired shape and size-end treatment; It is characterized in that:
Described heat treatment step adopts double normalizing+one time tempering+cooling, and normalizing temperature is greater than the normalizing temperature second time for the first time;
The described normalizing first time: adopt zone heating, the first paragraph Heating temperature is 700-750 ℃, and to the rear insulation of temperature 10-15min, the second segment Heating temperature is 850-880 ℃, is incubated 35-40min after temperature, then carries out the normalizing second time behind the air cooling 10-15min;
The described normalizing second time: adopt zone heating, the first paragraph Heating temperature is 600-650 ℃ of heating, and to the rear insulation of temperature 15-18min, the second segment Heating temperature is 660-690 ℃ of heating, is incubated 20-30min after temperature, and then water-cooled is to room temperature;
Described tempering: tempering temperature 620-640 ℃, after temperature, be incubated 10-15min, then cool off;
The method that described cooling adopts water-cooled to be combined with air cooling, adopt first water-cooled with the rate of cooling of 1-3 ℃/s with the steel plate water-cooled to 500-550 ℃, then air cooling is to 430-460 ℃, adopt again water-cooled with the rate of cooling of 4-5 ℃/s with the steel plate water-cooled to room temperature.
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| CN201210561224.0A CN103045961B (en) | 2012-12-21 | 2012-12-21 | Anchoring flange and manufacturing process thereof |
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| CN201210561224.0A CN103045961B (en) | 2012-12-21 | 2012-12-21 | Anchoring flange and manufacturing process thereof |
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| CN103045961B CN103045961B (en) | 2015-02-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791562A (en) * | 2015-03-30 | 2015-07-22 | 无锡市华尔泰机械制造有限公司 | F304/F304L double-standard stainless steel flange and production process thereof |
| CN105033575A (en) * | 2015-06-23 | 2015-11-11 | 中山市鸿程科研技术服务有限公司 | Machining technology of high-pressure flange |
| CN105420598A (en) * | 2015-12-14 | 2016-03-23 | 浙江海洋学院 | Low-carbon alloy steel for boat anchor and thermal treatment process of low-carbon alloy steel |
| CN106594346A (en) * | 2016-12-22 | 2017-04-26 | 苏州劲元油压机械有限公司 | Acid and base resistant high-pressure overflow valve body |
| CN110756734A (en) * | 2019-11-21 | 2020-02-07 | 安徽亚太锚链制造有限公司 | Automatic die forging production process for marine anchor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0219194A1 (en) * | 1985-07-31 | 1987-04-22 | Daido Tokushuko Kabushiki Kaisha | Austenitic free cutting stainless steels |
| JP2001226741A (en) * | 2000-02-15 | 2001-08-21 | Kawasaki Steel Corp | High strength cold rolled steel sheet excellent in stretch flanging workability and producing method therefor |
| CN101805875A (en) * | 2010-02-26 | 2010-08-18 | 山西众立法兰有限公司 | Steel special for anchoring flange |
| CN102191442A (en) * | 2011-05-13 | 2011-09-21 | 宝鸡石油机械有限责任公司 | Steel for marine riser flange of marine deepwater drilling and manufacturing method of marine riser flange |
| CN102644032A (en) * | 2012-04-17 | 2012-08-22 | 马钢(集团)控股有限公司 | Cooling after rolling method for high-weather fastness hot-rolled H-steel with yield strength up to 550MPa |
| CN102728756A (en) * | 2012-06-27 | 2012-10-17 | 江苏金源锻造股份有限公司 | Wind power spindle flange upsetting process |
-
2012
- 2012-12-21 CN CN201210561224.0A patent/CN103045961B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0219194A1 (en) * | 1985-07-31 | 1987-04-22 | Daido Tokushuko Kabushiki Kaisha | Austenitic free cutting stainless steels |
| JP2001226741A (en) * | 2000-02-15 | 2001-08-21 | Kawasaki Steel Corp | High strength cold rolled steel sheet excellent in stretch flanging workability and producing method therefor |
| CN101805875A (en) * | 2010-02-26 | 2010-08-18 | 山西众立法兰有限公司 | Steel special for anchoring flange |
| CN102191442A (en) * | 2011-05-13 | 2011-09-21 | 宝鸡石油机械有限责任公司 | Steel for marine riser flange of marine deepwater drilling and manufacturing method of marine riser flange |
| CN102644032A (en) * | 2012-04-17 | 2012-08-22 | 马钢(集团)控股有限公司 | Cooling after rolling method for high-weather fastness hot-rolled H-steel with yield strength up to 550MPa |
| CN102728756A (en) * | 2012-06-27 | 2012-10-17 | 江苏金源锻造股份有限公司 | Wind power spindle flange upsetting process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791562A (en) * | 2015-03-30 | 2015-07-22 | 无锡市华尔泰机械制造有限公司 | F304/F304L double-standard stainless steel flange and production process thereof |
| CN105033575A (en) * | 2015-06-23 | 2015-11-11 | 中山市鸿程科研技术服务有限公司 | Machining technology of high-pressure flange |
| CN105420598A (en) * | 2015-12-14 | 2016-03-23 | 浙江海洋学院 | Low-carbon alloy steel for boat anchor and thermal treatment process of low-carbon alloy steel |
| CN106594346A (en) * | 2016-12-22 | 2017-04-26 | 苏州劲元油压机械有限公司 | Acid and base resistant high-pressure overflow valve body |
| CN110756734A (en) * | 2019-11-21 | 2020-02-07 | 安徽亚太锚链制造有限公司 | Automatic die forging production process for marine anchor |
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| CN103045961B (en) | 2015-02-04 |
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