CN106216399A - The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube - Google Patents
The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube Download PDFInfo
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- CN106216399A CN106216399A CN201610610400.3A CN201610610400A CN106216399A CN 106216399 A CN106216399 A CN 106216399A CN 201610610400 A CN201610610400 A CN 201610610400A CN 106216399 A CN106216399 A CN 106216399A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 238000003801 milling Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 231
- 238000004519 manufacturing process Methods 0.000 claims abstract description 46
- 238000004513 sizing Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000002372 labelling Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 8
- 238000005242 forging Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000002351 wastewater Substances 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention belongs to seamless steel tube production processing technique field, particularly relate to can rolling seamless steel pipe at relatively high temperatures, steel pipe radially tissue is difficult to occur rolling split, and seamless steel tube production efficiency is high, quality is high, the method that a kind of double-core axle associating milling train that production cost is low produces hot rolled seamless steel tube, concrete steps include heating, perforation, and double-core axle tandem rolling device wears rod, rolling, sizing truing, cooling, finished product is collected；A kind of double-core axle associating milling train that the present invention provides produces the method for hot rolled seamless steel tube and has rolling seamless steel pipe under higher temperature, and steel pipe radially tissue is difficult to occur rolling split, and seamless steel tube production efficiency is high, quality is high, the advantage that production cost is low.
Description
Technical field
The invention belongs to seamless steel tube production processing technique field, particularly relate to can roll seamless steel at relatively high temperatures
Pipe, steel pipe radially tissue is difficult to occur rolling split, and seamless steel tube production efficiency is high, quality is high, a kind of double-core axle that production cost is low
Associating milling train produces the method for hot rolled seamless steel tube.
Background technology
The production capacity of China's seamless steel pipe is at the forefront in the world, becomes the big country of seamless steel tube production, domestic have all types of
Seamless steel pipe hot-rolling is cold rolling and cold-drawn unit, and the production of the most small-bore special thin-wall seamless steel pipe relies on traditional handicraft substantially
Cold mill complex and cold-drawn complete, and the production efficiency of cold-drawn production technology is low, energy consumption is high, lumber recovery is low, also pickling waste waters pair
Environmental pollution is serious, it addition, China's existing roller trio skew rolling technique at present, produces small-diameter, thin-walled seamless pipe, and wall thickness reducing amount is little, can only
Thick-walled seamless steel pipes in rolling, the hollow billet passed is thin, and temperature is low, easily occurs that radial direction tissue rolls fission shape irregular, the most sternly
Heavily have impact on the raising of seamless steel tube production manufacturing capacity and quality.And our company of Publication No. CN 205056629U is special
Profit provides the technological reserve of processing unit (plant) for solving this problem.
Summary of the invention
The present invention solves that existing seamless steel pipe adds that the production efficiency being had man-hour is low, energy consumption is high, lumber recovery is low, right
Environmental pollution is serious, wall thickness reducing amount is little, can only roll in thick-walled seamless steel pipes, easily occur radially tissue to roll fission shape irregular,
Seamless steel tube production manufacturing capacity, low-quality problem, and provide can rolling seamless steel pipe at relatively high temperatures, steel pipe is radially
Tissue is difficult to occur rolling split, and seamless steel tube production efficiency is high, quality is high, and a kind of double-core axle associating milling train that production cost is low produces
The method of hot rolled seamless steel tube.
The technical solution used in the present invention is:
The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube, specifically comprises the following steps that
Step 1) heats, and is heated at heating of pipe blank stove by pipe, and heating-up temperature is not less than 1150 DEG C；
Step 2) perforation, the pipe perforated unit perforation after heating, make hollow billet；
Step 3) double-core axle tandem rolling device wears rod, the hollow billet that perforated is made, and the flexible charging ploughing under double-core axle tandem rolling device is put down
On platform, come and gone by mobile platform dynamic, drive flexible feeding platform motion, make hollow billet flow into being rotated into of double-core axle tandem rolling device
In material mechanism, carry out feed-through rod；
Step 4) rolls, and will be installed with the hollow billet of plug, the rotary feeding mechanism of double-core axle tandem rolling device screw in associating milling train, enter
Row rolling；Described associating milling train includes roller trio skew rolling main frame and the two-roller skew-rolling main frame being arranged side by side；
Step 5) sizing truing, by the hollow forging after rolling by micro-tension reducing sizing unit, carries out tube reducing, sizing, shaping, shape
Become hot production tube；
Step 6) cools down, and hot production tube cools down through step cooling bed；
Step 7) finished product is collected, and the production tube after cooling carries out alignment, crop, check, labelling of packing warehouse-in, form commercial pipes.
Further, described step 4) is installed with the hollow billet of plug when duo mill tube reducing, undergauge rolling, its wall thickness reducing amount
For 0.5mm ~ 3mm, sizing reduction is 4mm ~ 10mm.
Further, described step 4) is installed with the hollow billet of plug through three-high mill tube reducing, subtract wall rolling time, its sizing reduction
For 10mm ~ 25mm, wall thickness reducing amount is 0.5mm ~ 2.5mm.
Further, in the associating milling train in described step 4), the lower section of roller trio skew rolling main frame and two-roller skew-rolling main frame is arranged
Have for roller trio skew rolling main frame and the track of two-roller skew-rolling main frame translation, advance roller trio skew rolling main frame and two-roller skew-rolling main frame along track
The hydraulic thrust cylinder of translation and by fixing to roller trio skew rolling main frame and two-roller skew-rolling main frame hydraulic locking cylinder in orbit, at three rollers
The side of oblique milling main frame and two-roller skew-rolling main frame is additionally provided with for driving roller trio skew rolling main frame or two-roller skew-rolling host work
Motor, reductor and connection reductor and roller trio skew rolling main frame or the power transmission shaft of two-roller skew-rolling main frame；According to being produced during rolling
The specification of seamless steel pipe selects to use the roller trio skew rolling main frame in associating milling train or two-roller skew-rolling main frame, is stretched by hydraulic thrust cylinder
Motion, moves to the center of rolled pipe the roller trio skew rolling main frame in associating milling train or two-roller skew-rolling main frame along track, fortune
With hydraulic locking cylinder, the roller trio skew rolling main frame in associating milling train or two-roller skew-rolling main frame are locked, then carry out rolling out required
Seamless steel pipe.
The beneficial effects of the present invention is: a kind of double-core axle associating milling train disclosed in this invention produces hot rolled seamless steel tube
Method, have employed double-core axle tandem rolling device and combine milling train, double-core axle tandem rolling device achieve one rolling one wear hair in advance
Pipe.The three-high mill of associating milling train utilizes the higher temperature after thick-walled pipe perforation, wears thickness and rolls thin, solves that temperature is low cannot roll
A difficult problem for system.It is low that duo mill solves temperature in the operation of rolling, easily occurs that radially tissue rolls the difficult problem split.Improving nothing
While slit-tube production efficiency and quality, also reduce cost.
In a word, a kind of double-core axle associating milling train that the present invention provides produces the method for hot rolled seamless steel tube and has higher temperature
Lower rolling seamless steel pipe, steel pipe radially tissue is difficult to occur rolling split, and seamless steel tube production efficiency is high, quality is high, and production cost is low
Advantage.
Accompanying drawing explanation
Fig. 1 is the flow chart that a kind of double-core axle associating milling train that the present invention provides produces the method for hot rolled seamless steel tube.
Fig. 2 is the middle associating milling train that a kind of double-core axle associating milling train that the present invention provides produces the method for hot rolled seamless steel tube
Structural representation.
In figure: 1, heating of pipe blank stove；2, perforation unit；3, double-core axle tandem rolling device；4, associating milling train；5, slight-stretch reducing
Footpath sizing unit；6, step cooling bed；401, roller trio skew rolling main frame；402, two-roller skew-rolling main frame；403, track；404, hydraulic thrust
Cylinder；405, hydraulic locking cylinder；406, motor；407, reductor；408, power transmission shaft.
Detailed description of the invention
The core of the present invention is to provide the method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube.
Below in conjunction with the accompanying drawings present disclosure is described further:
The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube, as shown in Figure 1, 2, specifically comprises the following steps that
Step 1) heats, and is heated at heating of pipe blank stove 1 by pipe, and heating-up temperature is not less than 1150 DEG C；
Step 2) perforation, the pipe perforated unit 2 after heating is bored a hole, and makes hollow billet；
Step 3) double-core axle tandem rolling device 3 wears rod, the hollow billet that perforated is made, and ploughs under the flexible charging of double-core axle tandem rolling device 3
On platform, come and gone by mobile platform dynamic, drive flexible feeding platform motion, make hollow billet flow into the rotation of double-core axle tandem rolling device 3
Turn in feeding mechanism, carry out feed-through rod；
Step 4) rolls, and will be installed with the hollow billet of plug, the rotary feeding mechanism of double-core axle tandem rolling device 3 be selected into associating milling train 4,
Roll；Described associating milling train 4 includes roller trio skew rolling main frame 401 and the two-roller skew-rolling main frame 402 being arranged side by side, and combines milling train
In 4, roller trio skew rolling main frame 401 is provided with for roller trio skew rolling main frame 401 and two-roller skew-rolling master with the lower section of two-roller skew-rolling main frame 402
The hydraulic thrust that the track 403 of machine 402 translation, propelling roller trio skew rolling main frame 401 translate along track 403 with two-roller skew-rolling main frame 402
Cylinder 404 and the hydraulic locking cylinder 405 that roller trio skew rolling main frame 401 and two-roller skew-rolling main frame 402 are fixed on track 403,
Roller trio skew rolling main frame 401 and the side of two-roller skew-rolling main frame 402 are additionally provided with for driving roller trio skew rolling main frame 401 or two rollers oblique
Roll the motor 406 of main frame 402 work, reductor 407 and connect reductor 407 and roller trio skew rolling main frame 401 or two-roller skew-rolling master
The power transmission shaft 408 of machine 402；During rolling, the specification according to produced seamless steel pipe selects to use the roller trio skew rolling in associating milling train 4
Main frame 401 or two-roller skew-rolling main frame 402, by hydraulic thrust cylinder 404 stretching motion, the roller trio skew rolling main frame in associating milling train 4
401 or two-roller skew-rolling main frame 402 move to the center of rolled pipe along track 403, use hydraulic locking cylinder 405 to roll combining
Roller trio skew rolling main frame 401 or two-roller skew-rolling main frame 402 in machine 4 are locked, then carry out rolling out required seamless steel pipe；Institute
State the hollow billet being installed with plug through duo mill tube reducing, undergauge rolling time, its wall thickness reducing amount is 0.5mm ~ 3mm, sizing reduction be 4mm ~
10mm；Be installed with the hollow billet of plug through three-high mill tube reducing, subtract wall rolling time, its sizing reduction is 10mm ~ 25mm, and wall thickness reducing amount is
0.5mm~2.5mm；
Step 5) sizing truing, by the hollow forging after rolling by micro-tension reducing sizing unit 5, carry out tube reducing, sizing, shaping,
Form hot production tube；
Step 6) cools down, and hot production tube cools down through step cooling bed 6；
Step 7) finished product is collected, and the production tube after cooling carries out alignment, crop, check, labelling of packing warehouse-in, form commercial pipes.
Embodiment 1:
The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube, as shown in Figure 1, 2, specifically comprises the following steps that
Step 1) heats, and is heated at heating of pipe blank stove 1 by pipe, and heating-up temperature is 1150 DEG C；
Step 2) perforation, the pipe perforated unit 2 after heating is bored a hole, and makes hollow billet；
Step 3) double-core axle tandem rolling device 3 wears rod, the hollow billet that perforated is made, and ploughs under the flexible charging of double-core axle tandem rolling device 3
On platform, come and gone by mobile platform dynamic, drive flexible feeding platform motion, make hollow billet flow into the rotation of double-core axle tandem rolling device 3
Turn in feeding mechanism, carry out feed-through rod；
Step 4) rolls, and will be installed with the hollow billet of plug, the rotary feeding mechanism of double-core axle tandem rolling device 3 be selected into associating milling train 4,
Roll；Described associating milling train 4 includes roller trio skew rolling main frame 401 and the two-roller skew-rolling main frame 402 being arranged side by side, and combines milling train
In 4, roller trio skew rolling main frame 401 is provided with for roller trio skew rolling main frame 401 and two-roller skew-rolling master with the lower section of two-roller skew-rolling main frame 402
The hydraulic thrust that the track 403 of machine 402 translation, propelling roller trio skew rolling main frame 401 translate along track 403 with two-roller skew-rolling main frame 402
Cylinder 404 and the hydraulic locking cylinder 405 that roller trio skew rolling main frame 401 and two-roller skew-rolling main frame 402 are fixed on track 403,
Roller trio skew rolling main frame 401 and the side of two-roller skew-rolling main frame 402 are additionally provided with for driving roller trio skew rolling main frame 401 or two rollers oblique
Roll the motor 406 of main frame 402 work, reductor 407 and connect reductor 407 and roller trio skew rolling main frame 401 or two-roller skew-rolling master
The power transmission shaft 408 of machine 402；During rolling, the specification according to produced seamless steel pipe selects to use the roller trio skew rolling in associating milling train 4
Main frame 401 or two-roller skew-rolling main frame 402, by hydraulic thrust cylinder 404 stretching motion, the roller trio skew rolling main frame in associating milling train 4
401 or two-roller skew-rolling main frame 402 move to the center of rolled pipe along track 403, use hydraulic locking cylinder 405 to roll combining
Roller trio skew rolling main frame 401 or two-roller skew-rolling main frame 402 in machine 4 are locked, then carry out rolling out required seamless steel pipe；This
Being rolled through duo mill tube reducing, undergauge by the hollow billet being installed with plug in embodiment, the wall thickness reducing amount of hollow billet is 0.5mm, and sizing reduction is
4mm；
Step 5) sizing truing, by the hollow forging after rolling by micro-tension reducing sizing unit 5, carry out tube reducing, sizing, shaping,
Form hot production tube；
Step 6) cools down, and hot production tube cools down through step cooling bed 6；
Step 7) finished product is collected, and the production tube after cooling carries out alignment, crop, check, labelling of packing warehouse-in, form commercial pipes.
Embodiment 2:
The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube, as shown in Figure 1, 2, specifically comprises the following steps that
Step 1) heats, and is heated at heating of pipe blank stove 1 by pipe, and heating-up temperature is 1200 DEG C；
Step 2) perforation, the pipe perforated unit 2 after heating is bored a hole, and makes hollow billet；
Step 3) double-core axle tandem rolling device 3 wears rod, the hollow billet that perforated is made, and ploughs under the flexible charging of double-core axle tandem rolling device 3
On platform, come and gone by mobile platform dynamic, drive flexible feeding platform motion, make hollow billet flow into the rotation of double-core axle tandem rolling device 3
Turn in feeding mechanism, carry out feed-through rod；
Step 4) rolls, and will be installed with the hollow billet of plug, the rotary feeding mechanism of double-core axle tandem rolling device 3 be selected into associating milling train 4,
Roll；Described associating milling train 4 includes roller trio skew rolling main frame 401 and the two-roller skew-rolling main frame 402 being arranged side by side, and combines milling train
In 4, roller trio skew rolling main frame 401 is provided with for roller trio skew rolling main frame 401 and two-roller skew-rolling master with the lower section of two-roller skew-rolling main frame 402
The hydraulic thrust that the track 403 of machine 402 translation, propelling roller trio skew rolling main frame 401 translate along track 403 with two-roller skew-rolling main frame 402
Cylinder 404 and the hydraulic locking cylinder 405 that roller trio skew rolling main frame 401 and two-roller skew-rolling main frame 402 are fixed on track 403,
Roller trio skew rolling main frame 401 and the side of two-roller skew-rolling main frame 402 are additionally provided with for driving roller trio skew rolling main frame 401 or two rollers oblique
Roll the motor 406 of main frame 402 work, reductor 407 and connect reductor 407 and roller trio skew rolling main frame 401 or two-roller skew-rolling master
The power transmission shaft 408 of machine 402；During rolling, the specification according to produced seamless steel pipe selects to use the roller trio skew rolling in associating milling train 4
Main frame 401 or two-roller skew-rolling main frame 402, by hydraulic thrust cylinder 404 stretching motion, the roller trio skew rolling main frame in associating milling train 4
401 or two-roller skew-rolling main frame 402 move to the center of rolled pipe along track 403, use hydraulic locking cylinder 405 to roll combining
Roller trio skew rolling main frame 401 or two-roller skew-rolling main frame 402 in machine 4 are locked, then carry out rolling out required seamless steel pipe；This
Being rolled through duo mill tube reducing, undergauge by the hollow billet being installed with plug in embodiment, the wall thickness reducing amount of hollow billet is 3mm, and sizing reduction is
10mm；
Step 5) sizing truing, by the hollow forging after rolling by micro-tension reducing sizing unit 5, carry out tube reducing, sizing, shaping,
Form hot production tube；
Step 6) cools down, and hot production tube cools down through step cooling bed 6；
Step 7) finished product is collected, and the production tube after cooling carries out alignment, crop, check, labelling of packing warehouse-in, form commercial pipes.
Embodiment 3:
The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube, as shown in Figure 1, 2, specifically comprises the following steps that
Step 1) heats, and is heated at heating of pipe blank stove 1 by pipe, and heating-up temperature is 1200 DEG C；
Step 2) perforation, the pipe perforated unit 2 after heating is bored a hole, and makes hollow billet；
Step 3) double-core axle tandem rolling device 3 wears rod, the hollow billet that perforated is made, and ploughs under the flexible charging of double-core axle tandem rolling device 3
On platform, come and gone by mobile platform dynamic, drive flexible feeding platform motion, make hollow billet flow into the rotation of double-core axle tandem rolling device 3
Turn in feeding mechanism, carry out feed-through rod；
Step 4) rolls, and will be installed with the hollow billet of plug, the rotary feeding mechanism of double-core axle tandem rolling device 3 be selected into associating milling train 4,
Roll；Described associating milling train 4 includes roller trio skew rolling main frame 401 and the two-roller skew-rolling main frame 402 being arranged side by side, and combines milling train
In 4, roller trio skew rolling main frame 401 is provided with for roller trio skew rolling main frame 401 and two-roller skew-rolling master with the lower section of two-roller skew-rolling main frame 402
The hydraulic thrust that the track 403 of machine 402 translation, propelling roller trio skew rolling main frame 401 translate along track 403 with two-roller skew-rolling main frame 402
Cylinder 404 and the hydraulic locking cylinder 405 that roller trio skew rolling main frame 401 and two-roller skew-rolling main frame 402 are fixed on track 403,
Roller trio skew rolling main frame 401 and the side of two-roller skew-rolling main frame 402 are additionally provided with for driving roller trio skew rolling main frame 401 or two rollers oblique
Roll the motor 406 of main frame 402 work, reductor 407 and connect reductor 407 and roller trio skew rolling main frame 401 or two-roller skew-rolling master
The power transmission shaft 408 of machine 402；During rolling, the specification according to produced seamless steel pipe selects to use the roller trio skew rolling in associating milling train 4
Main frame 401 or two-roller skew-rolling main frame 402, by hydraulic thrust cylinder 404 stretching motion, the roller trio skew rolling main frame in associating milling train 4
401 or two-roller skew-rolling main frame 402 move to the center of rolled pipe along track 403, use hydraulic locking cylinder 405 to roll combining
Roller trio skew rolling main frame 401 or two-roller skew-rolling main frame 402 in machine 4 are locked, then carry out rolling out required seamless steel pipe；This
In embodiment by be installed with the hollow billet of plug through three-high mill tube reducing, subtract wall rolling, the sizing reduction of hollow billet is 10mm, and wall thickness reducing amount is
0.5mm；
Step 5) sizing truing, by the hollow forging after rolling by micro-tension reducing sizing unit 5, carry out tube reducing, sizing, shaping,
Form hot production tube；
Step 6) cools down, and hot production tube cools down through step cooling bed 6；
Step 7) finished product is collected, and the production tube after cooling carries out alignment, crop, check, labelling of packing warehouse-in, form commercial pipes.
Embodiment 4:
The method that a kind of double-core axle associating milling train produces hot rolled seamless steel tube, as shown in Figure 1, 2, specifically comprises the following steps that
Step 1) heats, and is heated at heating of pipe blank stove 1 by pipe, and heating-up temperature is 1250 DEG C；
Step 2) perforation, the pipe perforated unit 2 after heating is bored a hole, and makes hollow billet；
Step 3) double-core axle tandem rolling device 3 wears rod, the hollow billet that perforated is made, and ploughs under the flexible charging of double-core axle tandem rolling device 3
On platform, come and gone by mobile platform dynamic, drive flexible feeding platform motion, make hollow billet flow into the rotation of double-core axle tandem rolling device 3
Turn in feeding mechanism, carry out feed-through rod；
Step 4) rolls, and will be installed with the hollow billet of plug, the rotary feeding mechanism of double-core axle tandem rolling device 3 be selected into associating milling train 4,
Roll；Described associating milling train 4 includes roller trio skew rolling main frame 401 and the two-roller skew-rolling main frame 402 being arranged side by side, and combines milling train
In 4, roller trio skew rolling main frame 401 is provided with for roller trio skew rolling main frame 401 and two-roller skew-rolling master with the lower section of two-roller skew-rolling main frame 402
The hydraulic thrust that the track 403 of machine 402 translation, propelling roller trio skew rolling main frame 401 translate along track 403 with two-roller skew-rolling main frame 402
Cylinder 404 and the hydraulic locking cylinder 405 that roller trio skew rolling main frame 401 and two-roller skew-rolling main frame 402 are fixed on track 403,
Roller trio skew rolling main frame 401 and the side of two-roller skew-rolling main frame 402 are additionally provided with for driving roller trio skew rolling main frame 401 or two rollers oblique
Roll the motor 406 of main frame 402 work, reductor 407 and connect reductor 407 and roller trio skew rolling main frame 401 or two-roller skew-rolling master
The power transmission shaft 408 of machine 402；During rolling, the specification according to produced seamless steel pipe selects to use the roller trio skew rolling in associating milling train 4
Main frame 401 or two-roller skew-rolling main frame 402, by hydraulic thrust cylinder 404 stretching motion, the roller trio skew rolling main frame in associating milling train 4
401 or two-roller skew-rolling main frame 402 move to the center of rolled pipe along track 403, use hydraulic locking cylinder 405 to roll combining
Roller trio skew rolling main frame 401 or two-roller skew-rolling main frame 402 in machine 4 are locked, then carry out rolling out required seamless steel pipe；This
In embodiment by be installed with the hollow billet of plug through three-high mill tube reducing, subtract wall rolling, the sizing reduction of hollow billet is 25mm, and wall thickness reducing amount is
2.5mm；
Step 5) sizing truing, by the hollow forging after rolling by micro-tension reducing sizing unit 5, carry out tube reducing, sizing, shaping,
Form hot production tube；
Step 6) cools down, and hot production tube cools down through step cooling bed 6；
Step 7) finished product is collected, and the production tube after cooling carries out alignment, crop, check, labelling of packing warehouse-in, form commercial pipes.
The method that disclosed double-core axle associating milling train in above example produces hot rolled seamless steel tube, in the operation of rolling
In be specially；The heat produced by gas furnace to heating of pipe blank stove 1, pipe be heated in heating of pipe blank stove 1 temperature required (no
Less than 1150 DEG C), perforated unit 2 makes hollow billet, drives flexible feeding platform by double-core axle tandem rolling device 3 back and forth movement,
In making hollow billet flow into the rotary feeding of double-core axle tandem rolling device 3, feed-through rod position carries out wearing rod, rolls in being re-fed into associating milling train 4
Make type, carry out sizing by slight stretch sizing mill, seamless steel pipe alignment after step cooling bed 6 cools down after sizing, cut
Head inspection, packing, labelling warehouse-in step form commercial pipes.
Visible according to above-mentioned detailed description of the invention, a kind of double-core axle associating milling train that the present invention provides produces the seamless steel of hot rolling
The method of pipe has rolling seamless steel pipe under higher temperature, and steel pipe radially tissue is difficult to occur rolling split, seamless steel tube production efficiency
High, quality height, the advantage that production cost is low.
Claims (4)
1. the method that a double-core axle associating milling train produces hot rolled seamless steel tube, it is characterised in that
Specifically comprise the following steps that
Step 1) heats, and is heated at heating of pipe blank stove by pipe, and heating-up temperature is not less than 1150 DEG C；
Step 2) perforation, the pipe perforated unit perforation after heating, make hollow billet；
Step 3) double-core axle tandem rolling device wears rod, the hollow billet that perforated is made, and the flexible charging ploughing under double-core axle tandem rolling device is put down
On platform, come and gone by mobile platform dynamic, drive flexible feeding platform motion, make hollow billet flow into being rotated into of double-core axle tandem rolling device
In material mechanism, carry out feed-through rod；
Step 4) rolls, and will be installed with the hollow billet of plug, the rotary feeding mechanism of double-core axle tandem rolling device screw in associating milling train, enter
Row rolling；Described associating milling train includes roller trio skew rolling main frame and the two-roller skew-rolling main frame being arranged side by side；
Step 5) sizing truing, by the hollow forging after rolling by micro-tension reducing sizing unit, carries out tube reducing, sizing, shaping, shape
Become hot production tube；
Step 6) cools down, and hot production tube cools down through step cooling bed；
Step 7) finished product is collected, and the production tube after cooling carries out alignment, crop, check, labelling of packing warehouse-in, form commercial pipes.
The method that double-core axle the most according to claim 1 associating milling train produces hot rolled seamless steel tube, it is characterised in that: described
Being installed with the hollow billet of plug in step 4) when duo mill tube reducing, undergauge rolling, its wall thickness reducing amount is 0.5mm ~ 3mm, and sizing reduction is
4mm~10mm。
The method that double-core axle the most according to claim 1 associating milling train produces hot rolled seamless steel tube, it is characterised in that: described
Step 4) is installed with the hollow billet of plug through three-high mill tube reducing, subtract wall rolling time, its sizing reduction is 10mm ~ 25mm, and wall thickness reducing amount is
0.5mm~2.5mm。
4. the method producing hot rolled seamless steel tube according to described double-core axle associating milling train arbitrary in claim 1 ~ 3, its feature
It is: in the associating milling train in described step 4), roller trio skew rolling main frame is provided with for roller trio skew rolling with the lower section of two-roller skew-rolling main frame
The hydraulic thrust that track, propelling roller trio skew rolling main frame and the two-roller skew-rolling main frame that main frame translates with two-roller skew-rolling main frame translates along track
Cylinder and by fixing to roller trio skew rolling main frame and two-roller skew-rolling main frame hydraulic locking cylinder in orbit, at roller trio skew rolling main frame and two
The side of roller oblique milling main frame be additionally provided with for drive roller trio skew rolling main frame or the motor of two-roller skew-rolling host work, reductor and
Connect reductor and roller trio skew rolling main frame or the power transmission shaft of two-roller skew-rolling main frame；Specification according to produced seamless steel pipe during rolling
Select to use the roller trio skew rolling main frame in associating milling train or two-roller skew-rolling main frame, by hydraulic thrust cylinder stretching motion, roll combining
Roller trio skew rolling main frame or two-roller skew-rolling main frame in machine move to the center of rolled pipe along track, use hydraulic locking cylinder pair
Roller trio skew rolling main frame or two-roller skew-rolling main frame in associating milling train are locked, then carry out rolling out required seamless steel pipe.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825106A (en) * | 2017-02-22 | 2017-06-13 | 长葛市鸣机械有限公司 | The technique of thin-walled hot rolled seamless steel tube in a kind of double-core axle two-roller skew-rolling production |
| CN109692885A (en) * | 2019-02-22 | 2019-04-30 | 山东鹏瑞凿岩科技有限公司 | The production technology of trigone steel pipe |
| CN111408624A (en) * | 2020-03-26 | 2020-07-14 | 太原科技大学 | Double-core-rod mechanism and method for rolling metal pipe |
| 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 |
| CN113522981A (en) * | 2021-07-09 | 2021-10-22 | 大冶特殊钢有限公司 | Method for reducing surface crack defects of sulfur-containing steel skew-rolled seamless steel pipe |
| CN113976629A (en) * | 2021-11-09 | 2022-01-28 | 北京科技大学 | Seamless pipe and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001121203A (en) * | 1999-10-21 | 2001-05-08 | Sumitomo Metal Ind Ltd | Thickness non-uniformity monitoring method of seamless pipe |
| CN200974079Y (en) * | 2006-07-14 | 2007-11-14 | 李传斌 | Cross wedge rolling type linked rolling machine group |
| CN201692994U (en) * | 2010-06-29 | 2011-01-05 | 太原矿山机器集团有限公司 | Rolling mill capable of being switched between horizontal and vertical states |
| CN102327896A (en) * | 2011-09-20 | 2012-01-25 | 浙江宝时德钢管有限公司 | Precision rolling method of seamless steel pipe and processing device thereof |
| CN102581014A (en) * | 2012-02-07 | 2012-07-18 | 王国亮 | Process for producing thin-wall seamless steel tubes |
| CN205056629U (en) * | 2015-02-10 | 2016-03-02 | 长葛市一鸣机械有限公司 | Two plug tandem rolling devices |
-
2016
- 2016-07-29 CN CN201610610400.3A patent/CN106216399B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001121203A (en) * | 1999-10-21 | 2001-05-08 | Sumitomo Metal Ind Ltd | Thickness non-uniformity monitoring method of seamless pipe |
| CN200974079Y (en) * | 2006-07-14 | 2007-11-14 | 李传斌 | Cross wedge rolling type linked rolling machine group |
| CN201692994U (en) * | 2010-06-29 | 2011-01-05 | 太原矿山机器集团有限公司 | Rolling mill capable of being switched between horizontal and vertical states |
| CN102327896A (en) * | 2011-09-20 | 2012-01-25 | 浙江宝时德钢管有限公司 | Precision rolling method of seamless steel pipe and processing device thereof |
| CN102581014A (en) * | 2012-02-07 | 2012-07-18 | 王国亮 | Process for producing thin-wall seamless steel tubes |
| CN205056629U (en) * | 2015-02-10 | 2016-03-02 | 长葛市一鸣机械有限公司 | Two plug tandem rolling devices |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825106A (en) * | 2017-02-22 | 2017-06-13 | 长葛市鸣机械有限公司 | The technique of thin-walled hot rolled seamless steel tube in a kind of double-core axle two-roller skew-rolling production |
| CN109692885A (en) * | 2019-02-22 | 2019-04-30 | 山东鹏瑞凿岩科技有限公司 | The production technology of trigone steel pipe |
| CN111408624A (en) * | 2020-03-26 | 2020-07-14 | 太原科技大学 | Double-core-rod mechanism and method for rolling metal pipe |
| 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 |
| CN113522981A (en) * | 2021-07-09 | 2021-10-22 | 大冶特殊钢有限公司 | Method for reducing surface crack defects of sulfur-containing steel skew-rolled seamless steel pipe |
| CN113976629A (en) * | 2021-11-09 | 2022-01-28 | 北京科技大学 | Seamless pipe and preparation method thereof |
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