CN106180195A - 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process - Google Patents
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process Download PDFInfo
- Publication number
- CN106180195A CN106180195A CN201610779369.6A CN201610779369A CN106180195A CN 106180195 A CN106180195 A CN 106180195A CN 201610779369 A CN201610779369 A CN 201610779369A CN 106180195 A CN106180195 A CN 106180195A
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- millimeters
- steel pipe
- blank
- heavy caliber
- seamless steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 238000005096 rolling process Methods 0.000 title claims abstract description 61
- 238000005242 forging Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000004513 sizing Methods 0.000 claims abstract description 15
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 241000209094 Oryza Species 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
- B21B19/10—Finishing, e.g. smoothing, sizing, reeling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
- B21B2275/02—Speed
- B21B2275/04—Roll speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process, comprise the following steps: 1) blank is put into rotary heating furnace heat；2) when the temperature of blank is heated to more than 1250 degrees Celsius when, after being taken out by blank, hollow billet is bored a hole into；3) hollow billet after perforation is carried out PQF three-roll continuous rolling by tandem mill；4) hollow forging after tandem rolling is carried out de-pipe, then by reducing mill stand, the external diameter of hollow forging is carried out tube reducing and sizing；5) go to cool down on cold bed by the steel pipe week after sizing.Understand from the above, 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process of the present invention a, it is achieved that rolling production of 508 millimeters of heavy caliber seamless steel pipes, and 20 ~ 30 can be produced per hour, hence it is evident that improve production efficiency.
Description
Technical field
The present invention relates to produce the field of 508 millimeters of heavy caliber seamless steel pipes, be specifically related to a kind of 508 millimeters of heavy calibers without
Seam Steel Pipe Heat continuous rolling process.
Background technology
Along with development of oil industry, oil and natural gas conveyance conduit pipe prescription are more and more higher.508 large-diameter steels
Pipe is excessive due to its caliber, and the restriction of technology, causes to use expander within a very long time or using welded tube work
Skill produces, and cannot directly be directly produced out by blank.But, use expander technique steel pipe to use second heat to expand,
Steel pipe finished product can produce internal coiling defect, causes wall unevenness, is only capable of per hour producing about 10；If it addition, using weldering
Plumber's skill carries out producing 508 large-diameter steel pipes, and the grain size of its welding position and performance relatively seamless steel pipe can not be guaranteed, thus
Cause its service life the shortest.
Summary of the invention
It is an object of the invention to: overcome the deficiencies in the prior art, it is provided that a kind of 508 millimeters of heavy caliber seamless steel pipe heat are even
Rolling production method a, it is achieved that rolling production of 508 millimeters of heavy caliber seamless steel pipes, and 20 ~ 30 can be produced per hour,
Significantly improve production efficiency；Seamless steel pipe is rolling production of disposably boring a hole, and the grain size of steel pipe is uniform, and performance is guaranteed,
And the dimensional tolerance of steel pipe is little and surfaces externally and internally quality is good, high life；By adjusting perforating apparatus and equipment for continuously rolling
Parameter, such that it is able to producing bore is any one in special thick-walled pipe, thick-walled pipe, light-wall pipe and the limit light-wall pipe of 508 millimeters
Plant steel pipe.
The technical solution used in the present invention is:
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process, comprise the following steps:
1) blank is put into rotary heating furnace to heat；
2) when the temperature of blank is heated to more than 1250 degrees Celsius when, after being taken out by blank, hollow billet is bored a hole into；
3) by tandem mill, the hollow billet after perforation being carried out PQF three-roll continuous rolling, tandem rolling goes out the hollow forging that external diameter is 530 millimeters；
4) hollow forging after tandem rolling is carried out de-pipe, then by reducing mill stand, the external diameter of hollow forging is carried out tube reducing and sizing；
5) go to cool down on cold bed by the steel pipe week after sizing.
The further improvement project of the present invention is, in described step 1), is divided into multistage temperature to enter blank in rotary heating furnace
Row heating.
The present invention further improvement project is, described blank from rotary heating furnace is come out of the stove when, the core temperature of blank
Degree differs with surface temperature less than 10 degrees Celsius.
The present invention further improvement project is, the temperature of the first paragraph temperature of described rotary heating furnace to last 3rd section
Degree, gradually rises successively；The temperature of last two sections is all identical with the tapping temperature of blank, and the temperature of last 3rd section is than blank
Tapping temperature is high 20 degrees Celsius ~ and 30 degrees Celsius.
The present invention further improvement project is, described step 2) in, a diameter of 500 millimeters of blank, the top of perforation
A diameter of 476 millimeters of head, a length of 1062 millimeters of top, a diameter of 450 millimeters of push rod, roll spacing during perforation is 441
Millimeter, lead is 512 millimeters, and the front-extending quantity of top is 240 millimeters, and roll angle is 8.5 degree, and roll rotational speed is at 32 turns per minute
In the range of ~ 45 turns, and the external diameter by the hollow billet after selecting different plugs to make perforation is 577 millimeters, and the wall thickness of hollow billet exists
In the range of 23 millimeters ~ 75 millimeters.
The present invention further improvement project is, in described step 3), arranges the rolling of tandem mill according to rolling parameter table
Parameter, carries out tandem rolling to hollow billet, and hollow billet is rolled into the hollow forging that external diameter is 530 millimeters.
The present invention further improvement project is that, in described step 4), hollow billet is rolled into famine at tandem mill by pipe-extracting rack
Carrying out de-pipe by pipe-extracting rack after pipe, while de-pipe, pipe-extracting rack carries out tube reducing to the external diameter of hollow forging.
The present invention further improvement project is, in described step 4), hollow forging after the sizing of sizing mechanism, steel pipe
External diameter be 508 millimeters, the thickness of steel pipe is in the range of 9 millimeters ~ 60 millimeters.
The beneficial effects of the present invention is:
The first, 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process of the present invention, it is achieved that 508 millimeters of large-calibre seamless
Rolling production of steel pipe, and 20 ~ 30 can be produced per hour, hence it is evident that improve production efficiency.
The second, 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process of the present invention, seamless steel pipe is disposable perforation
Rolling production, the grain size of steel pipe is uniform, and performance is guaranteed, and the dimensional tolerance of steel pipe is little and surfaces externally and internally quality is good, makes
High with the life-span.
3rd, 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process of the present invention, by adjusting perforating apparatus and company
The parameter of rolling plant, such that it is able to produce in special thick-walled pipe, thick-walled pipe, light-wall pipe and the limit light-wall pipe that bore is 508 millimeters
Any one steel pipe.
Detailed description of the invention:
The present invention comprises the following steps:
1) blank is put into rotary heating furnace to heat；
2) when the temperature of blank is heated to more than 1250 degrees Celsius when, after being taken out by blank, hollow billet is bored a hole into；
3) by tandem mill, the hollow billet after perforation being carried out PQF three-roll continuous rolling, tandem rolling goes out the hollow forging that external diameter is 530 millimeters；
4) hollow forging after tandem rolling is carried out de-pipe, then by reducing mill stand, the external diameter of hollow forging is carried out tube reducing and sizing；
5) go to cool down on cold bed by the steel pipe week after sizing.
In described step 1), in rotary heating furnace, it is divided into multistage temperature that blank is heated.
Described blank is from rotary heating furnace is come out of the stove when, and the core temperature of blank differs with surface temperature to be taken the photograph less than 10
Family name's degree.
The first paragraph temperature of described rotary heating furnace, to the temperature of last 3rd section, gradually rises successively；Last two sections
Temperature is all identical with the tapping temperature of blank, and the temperature of last 3rd section is higher than the tapping temperature of blank 20 degrees Celsius ~ 30 Celsius
Degree.
Described step 2) in, a diameter of 500 millimeters of blank, a diameter of 476 millimeters of the top of perforation, the length of top
Degree is 1062 millimeters, and a diameter of 450 millimeters of push rod, roll spacing during perforation is 441 millimeters, and lead is 512 millimeters, before top
The amount of stretching is 240 millimeters, and roll angle is 8.5 degree, and roll rotational speed is in the range of 32 turns ~ 45 turns per minute, and passes through to select not
With plug make perforation after the external diameter of hollow billet be 577 millimeters, the wall thickness of hollow billet is in the range of 23 millimeters ~ 75 millimeters.
In described step 3), the rolling parameter of tandem mill is set according to rolling parameter table, hollow billet is carried out tandem rolling, by hollow billet
It is rolled into the hollow forging that external diameter is 530 millimeters.
In described step 4), pipe-extracting rack is taken off by pipe-extracting rack after hollow billet is rolled into hollow forging by tandem mill
Pipe, while de-pipe, pipe-extracting rack carries out tube reducing to the external diameter of hollow forging.
In described step 4), hollow forging is after the sizing of sizing mechanism, and the external diameter of steel pipe is 508 millimeters, the thickness of steel pipe
Degree is in the range of 9 millimeters ~ 60 millimeters.
The division of thick-walled pipe and light-wall pipe: D/S(outer diameter of steel pipes/steel pipe thickness) it is super thick pipe less than or equal to 10, D/S is 10
Being thick-walled pipe in the range of ~ 20, D/S is light-wall pipe in the range of 20 ~ 40, and D/S is limit light-wall pipe more than or equal to 40.
Embodiment 1
Prepare external diameter be 508 millimeters, thickness be the steel pipe of 9.5 millimeters, this steel pipe belongs to limit light-wall pipe (D/S=53.47).
The steel grade of blank is No. 20 steel, and blank is 1290 degrees Celsius from the temperature that rotary heating furnace is come out of the stove, rotary heating furnace
Inside be divided into 7 sections of temperature to heat, respectively be: 900 degrees Celsius, 1100 degrees Celsius, 1220 degrees Celsius, 1240 degrees Celsius,
1310 degrees Celsius, 1290 degrees Celsius and 1290 degrees Celsius；Select plug during blank perforation a diameter of 507.2 millimeters, after perforation
Hollow billet a size of external diameter 577 millimeters, thickness 25.9 millimeters, tandem mill is carried out continuously 5 sections of rollings even, rolling parameter such as table 1 institute
Show；Hollow forging after tandem rolling a size of external diameter 530 millimeters, thickness 9.4 millimeters, lengthening coefficient is 4.36；Pipe-extracting rack and sizing mill
Frame amounts to 5 framves, and wherein pipe-extracting rack is 3 framves, and reducing mill stand is 2 framves, the most minimum frame reducing mill stand 2B value (pass size)
Be 513.8 millimeters, the finished size after reducing mill stand be external diameter be 508 millimeters, thickness be 9.5 millimeters.
Table 1
| Rolling section | 1 | 2 | 3 | 4 | 5 |
| Roller diameter (millimeter) | 1125.50 | 1125.50 | 1113.00 | 1119.00 | 1120.50 |
| Rotating speed (rpm) | 34.9 | 52.9 | 65.4 | 79.7 | 81.3 |
| Pass diameter (millimeter) | 536.82 | 533.30 | 527.45 | 526.53 | 526.53 |
| Roll-force (ton) | 469 | 406 | 325 | 294 | 87 |
Embodiment 2
Prepare external diameter be 508 millimeters, thickness be the steel pipe of 15 millimeters, this steel pipe belongs to light-wall pipe (D/S=33.87).
The steel grade of blank is No. 20 steel, and blank is 1280 degrees Celsius from the temperature that rotary heating furnace is come out of the stove, rotary heating furnace
Inside be divided into 7 sections of temperature to heat, respectively be: 900 degrees Celsius, 1100 degrees Celsius, 1220 degrees Celsius, 1240 degrees Celsius,
1310 degrees Celsius, 1280 degrees Celsius and 1280 degrees Celsius；Hollow billet after perforation a size of external diameter 577 millimeters, thickness 28.55 milli
Rice, tandem mill is carried out continuously 5 sections of rollings even, and rolling parameter is as shown in table 1；Hollow forging after tandem rolling a size of external diameter 530 millimeters, thickness
Spending 14.84 millimeters, pipe-extracting rack and reducing mill stand amount to 5 framves, and wherein pipe-extracting rack is 3 framves, and reducing mill stand is 2 framves,
Little frame reducing mill stand 2B value (pass size) is 514.3 millimeters, the finished size after reducing mill stand be external diameter be 508 millimeters,
Thickness is 15 millimeters.
Embodiment 3
Prepare external diameter footpath be 508 millimeters, thickness be the steel pipe of 30 millimeters, this steel pipe belongs to thick-walled pipe (D/S=16.98).
The steel grade of blank is No. 20 steel, and blank is 1270 degrees Celsius from the temperature that rotary heating furnace is come out of the stove, rotary heating furnace
Inside be divided into 7 sections of temperature to heat, respectively be: 900 degrees Celsius, 1100 degrees Celsius, 1220 degrees Celsius, 1240 degrees Celsius,
1300 degrees Celsius, 1270 degrees Celsius and 1270 degrees Celsius；Hollow billet after perforation a size of external diameter 577 millimeters, thickness 41.55 milli
Rice, tandem mill is carried out continuously 5 sections of rollings even, and rolling parameter is as shown in table 1；Hollow forging after tandem rolling a size of external diameter 530 millimeters, thickness
Spending 29.3 millimeters, pipe-extracting rack and reducing mill stand amount to 4 framves, and wherein pipe-extracting rack is 2 framves, and reducing mill stand is 2 framves, wherein minimum
One frame reducing mill stand 2B value (pass size) is 517 millimeters, the finished size after reducing mill stand be external diameter be 508 millimeters, thickness
It it is 30 millimeters.
Embodiment 4
Prepare external diameter be 508 millimeters, thickness be the steel pipe of 60 millimeters, this steel pipe belongs to special thick-walled pipe (D/S=8.49).
The steel grade of blank is No. 20 steel, and blank is 1260 degrees Celsius from the temperature that rotary heating furnace is come out of the stove, rotary heating furnace
Inside be divided into 7 sections of temperature to heat, respectively be: 900 degrees Celsius, 1100 degrees Celsius, 1220 degrees Celsius, 1240 degrees Celsius,
1290 degrees Celsius, 1260 degrees Celsius and 1260 degrees Celsius；Hollow billet after perforation a size of external diameter 577 millimeters, thickness 70.25 milli
Rice, tandem mill is carried out continuously 5 sections of rollings even, and rolling parameter is as shown in table 1；Hollow forging after tandem rolling a size of external diameter 530 millimeters, thickness
Spending 59.4 millimeters, pipe-extracting rack and reducing mill stand amount to 3 framves, and wherein pipe-extracting rack is 1 frame, and reducing mill stand is 2 framves, wherein minimum
One frame reducing mill stand 2B value (pass size) is 518 millimeters, the finished size after reducing mill stand be external diameter be 508 millimeters, thickness
It it is 60 millimeters.
Embodiment 5
Prepare external diameter be 508 millimeters, thickness be the steel pipe of 9 millimeters, this steel pipe belongs to limit light-wall pipe (D/S=56.44).
The steel grade of blank is No. 20 steel, and blank is 1290 degrees Celsius from the temperature that rotary heating furnace is come out of the stove, rotary heating furnace
Inside be divided into 7 sections of temperature to heat, respectively be: 900 degrees Celsius, 1100 degrees Celsius, 1220 degrees Celsius, 1240 degrees Celsius,
1310 degrees Celsius, 1290 degrees Celsius and 1290 degrees Celsius；Hollow billet after perforation a size of external diameter 577 millimeters, thickness 24.5 millimeters,
Tandem mill is carried out continuously 5 sections of rollings even, and rolling parameter is as shown in table 1；Hollow forging after tandem rolling a size of external diameter 530 millimeters, thickness
8.9 millimeters, pipe-extracting rack and reducing mill stand amount to 6 framves, and wherein pipe-extracting rack is 3 framves, and reducing mill stand is 3 framves, wherein minimum one
Frame reducing mill stand 2B value (pass size) is 513.7 millimeters, the finished size after reducing mill stand be external diameter be 508 millimeters, thickness
It it is 9 millimeters.
Claims (8)
1. 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process, it is characterised in that comprise the following steps:
1) blank is put into rotary heating furnace to heat；
2) when the temperature of blank is heated to more than 1250 degrees Celsius when, after being taken out by blank, hollow billet is bored a hole into；
3) by tandem mill, the hollow billet after perforation being carried out PQF three-roll continuous rolling, tandem rolling goes out the hollow forging that external diameter is 530 millimeters；
4) hollow forging after tandem rolling is carried out de-pipe, then by reducing mill stand, the external diameter of hollow forging is carried out tube reducing and sizing；
5) go to cool down on cold bed by the steel pipe week after sizing.
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process the most as claimed in claim 1, it is characterised in that: described step
Rapid 1), in, in rotary heating furnace, it is divided into multistage temperature that blank is heated.
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process the most as claimed in claim 2, it is characterised in that: described base
Material is from rotary heating furnace is come out of the stove when, and the core temperature of blank differs with surface temperature less than 10 degrees Celsius.
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process framves the most as claimed in claim 3, it is characterised in that: described
The first paragraph temperature of rotary heating furnace, to the temperature of last 3rd section, gradually rises successively；The temperature of last two sections is all and blank
Tapping temperature identical, the temperature of last 3rd section is higher than the tapping temperature of blank 20 degrees Celsius ~ 30 degrees Celsius.
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process framves the most as claimed in claim 1, it is characterised in that: described
Step 2) in, a diameter of 500 millimeters of blank, a diameter of 476 millimeters of the top of perforation, a length of 1062 millis of top
Rice, a diameter of 450 millimeters of push rod, roll spacing during perforation is 441 millimeters, and lead is 512 millimeters, and the front-extending quantity of top is 240
Millimeter, roll angle is 8.5 degree, and roll rotational speed is in the range of 32 turns ~ 45 turns per minute, and is made by the different plug of selection
The external diameter of the hollow billet after perforation is 577 millimeters, and the wall thickness of hollow billet is in the range of 23 millimeters ~ 75 millimeters.
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process framves the most as claimed in claim 1, it is characterised in that: described
In step 3), arranging the rolling parameter of tandem mill according to rolling parameter table, hollow billet is carried out tandem rolling, hollow billet is rolled into external diameter is
The hollow forging of 530 millimeters.
7. 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process framves as described in claim 1 or 6 the most any one,
It is characterized in that: in described step 4), pipe-extracting rack is carried out by pipe-extracting rack after hollow billet is rolled into hollow forging by tandem mill
De-pipe, while de-pipe, pipe-extracting rack carries out tube reducing to the external diameter of hollow forging.
508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process framves the most as claimed in claim 1, it is characterised in that: described
In step 4), hollow forging is after the sizing of sizing mechanism, and the external diameter of steel pipe is 508 millimeters, and the thickness of steel pipe is 9 millimeters ~ 60
In the range of Hao meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779369.6A CN106180195B (en) | 2016-08-31 | 2016-08-31 | 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779369.6A CN106180195B (en) | 2016-08-31 | 2016-08-31 | 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106180195A true CN106180195A (en) | 2016-12-07 |
| CN106180195B CN106180195B (en) | 2018-03-27 |
Family
ID=58087203
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610779369.6A Active CN106180195B (en) | 2016-08-31 | 2016-08-31 | 508 millimeters of heavy caliber seamless steel pipe hot continuous rolling process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589870A (en) * | 2020-04-03 | 2020-08-28 | 包头钢铁（集团）有限责任公司 | Method for producing rare earth bearing seamless steel pipe by adopting phi 200mm round pipe blank |
| CN112238141A (en) * | 2020-09-29 | 2021-01-19 | 江苏天淮钢管有限公司 | Hot continuous rolling production method of 508 mm large-caliber extra-thick-wall seamless steel pipe |
| CN113909305A (en) * | 2021-09-22 | 2022-01-11 | 江苏天淮钢管有限公司 | Hot continuous rolling production method of 530 mm large-caliber seamless steel pipe |
| CN113996660A (en) * | 2021-09-28 | 2022-02-01 | 大冶特殊钢有限公司 | Pipe jacking deformation method for large pipe jacking machine |
| CN115415325A (en) * | 2022-08-26 | 2022-12-02 | 大冶特殊钢有限公司 | Manufacturing method for rolling seamless steel tube by high-carbon chromium bearing steel continuous casting round billet |
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| CN111589870A (en) * | 2020-04-03 | 2020-08-28 | 包头钢铁（集团）有限责任公司 | Method for producing rare earth bearing seamless steel pipe by adopting phi 200mm round pipe blank |
| CN111589870B (en) * | 2020-04-03 | 2022-04-15 | 包头钢铁（集团）有限责任公司 | Method for producing rare earth bearing seamless steel pipe by adopting phi 200mm round pipe blank |
| CN112238141A (en) * | 2020-09-29 | 2021-01-19 | 江苏天淮钢管有限公司 | Hot continuous rolling production method of 508 mm large-caliber extra-thick-wall seamless steel pipe |
| CN113909305A (en) * | 2021-09-22 | 2022-01-11 | 江苏天淮钢管有限公司 | Hot continuous rolling production method of 530 mm large-caliber seamless steel pipe |
| CN113996660A (en) * | 2021-09-28 | 2022-02-01 | 大冶特殊钢有限公司 | Pipe jacking deformation method for large pipe jacking machine |
| CN115415325A (en) * | 2022-08-26 | 2022-12-02 | 大冶特殊钢有限公司 | Manufacturing method for rolling seamless steel tube by high-carbon chromium bearing steel continuous casting round billet |
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