CN107737810A - Steel pipe rolling technique - Google Patents
Steel pipe rolling technique Download PDFInfo
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- CN107737810A CN107737810A CN201710994284.4A CN201710994284A CN107737810A CN 107737810 A CN107737810 A CN 107737810A CN 201710994284 A CN201710994284 A CN 201710994284A CN 107737810 A CN107737810 A CN 107737810A
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- China
- Prior art keywords
- rolling
- pipe
- heating
- steel pipe
- sizing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention relates to a kind of steel pipe rolling technique, including step are as follows：Heating, pipe is heated in heating furnace more than 1150 DEG C；Perforation, perforated machine enter eleven punch 11 to the pipe after heating, hollow billet are made；Secondary soaking, manufactured hollow billet after perforation is sent into Sloping Hearth Heating Furnace and carries out Short Time Heating；Rolling, the hollow billet after secondary soaking is through on retained mandrel, is then carried out undergauge by three-roll cross rolling mill, is subtracted wall, extension rolling, forms hollow forging；De- pipe, the hollow forging after rolling are deviate from from retained mandrel；Sizing truing, sizing, shaping are carried out, forms hot production tube；Cooling, hot production tube are cooled down by step cooling bed；Finished product is collected, production thin-wall seamless steel pipe is which solved in the operation of rolling to cool the production problem for being not easy to roll again soon, the unreasonable product structure that thin-wall seamless steel pipe production replaces hot rolling with cold-drawn is changed, energy consumption, the efficiency for reducing equipment investment cost, improving production seamless steel pipe can be reduced.
Description
Technical field：
The invention belongs to steel pipe rolling technology field, and in particular to a kind of steel pipe rolling technique.
Background technology：
Ranked the first for successive years by development for many years, the capacity and output of seamless steel pipe in China.The country possesses
Various types of seamless steel pipe hot-rollings and cold-drawn unit, the reason for because of historical development, technology layout is uneven, and what is fallen behind is cold
Drawing machine group and technology occupy very big ratio.Particularly in thin-wall seamless steel pipe production technical field, due to the hair after perforation
Pipe temperature is too low can not hot rolling.So also using the techniques such as traditional perforation cold-drawn, its high energy consumption, lumber recovery are low, pollution ring
Border has seriously had a strong impact on the raising of seamless steel tube production manufacturing capacity.
The content of the invention：
A kind of steel pipe rolling technique is provided it is an object of the invention to solve problems of the prior art.Which solve life
Production thin-wall seamless steel pipe cools the production problem for being not easy to roll again soon in the operation of rolling, change thin-wall seamless steel pipe production with
Cold-drawn replaces the unreasonable product structure of hot rolling, can reduce energy consumption, reduce equipment investment cost, improves production seamless steel
The efficiency of pipe.
The technical proposal of the invention is realized in this way：
Steel pipe rolling technique, it is characterised in that comprise the following steps：
1）, heating, pipe is heated to more than 1150 DEG C in heating furnace；
2）, perforation, perforated machine enters eleven punch 11 to the pipe after heating, hollow billet is made；
3）, secondary soaking, manufactured hollow billet will be sent into Sloping Hearth Heating Furnace after perforation and carry out Short Time Heating；
4）, rolling, the hollow billet after secondary soaking is through on retained mandrel, then by three-roll cross rolling mill carry out undergauge,
Subtract wall, extension rolling, form hollow forging；
5）, de- pipe, the hollow forging after rolling deviates from from retained mandrel；
6）, sizing truing, by hollow forging by sizing unit, carry out sizing, shaping, form hot production tube；
7）, cooling, hot production tube cooled down by step cooling bed；
8）, finished product collect, the hot production tube after cooling is straightened, crop, inspection, packing, mark storage, formed commercial pipes.
Described step 2）In punch be two-roller skew-rolling formula punch.
Described step 3）In secondary soaking to 850-1050 degrees Celsius, soaking time is 3-5 minutes.
Described step 6）In sizing unit continuously arrange composition for 5-15 framves sizing mill.
The positive effect of the present invention：
1st, the pickling that traditional cold-drawn processing technology needs, phosphatization, saponification environmental pollution is larger, and new technology does not produce dirt to environment
Dye, it is that environment influences to be advantageous to environmental impact assessment.
2nd, 2~3 times are improved compared to traditional handicraft, production efficiency.
3rd, new technology stock utilization is high, and steel pipe's production benefit per ton improves 20% or so.
4th, fixed equipment less investment, it is with short production cycle.
Brief description of the drawings：
Fig. 1 is steel pipe rolling process chart.
In figure：1st, heating of pipe blank stove, 2, perforation unit, 3, feeding mechanism, 4, discharging material stirring-up mechanism, 5, Sloping Hearth heating
Stove, 6, gas furnace, 7, rotary feeding mechanism, retained mandrel mechanism, 8, roller trio skew rolling unit, 9, sizing unit, 10, stepping it is cold
Bed.
Embodiment：
Embodiment：With reference to as shown in figure 1, being further described to steel pipe rolling craft embodiment of the present invention：Steel pipe rolling technique,
It is characterized in that comprise the following steps：
1）, heating, the pipe of a diameter of 50-100 millimeters is heated to more than 1150 DEG C in heating furnace；
2）, perforation, perforated machine enters eleven punch 11 to the pipe after heating, and the hollow billet that external diameter is 53-103 millimeters is made；
3）, secondary soaking, manufactured hollow billet will be sent into Sloping Hearth Heating Furnace after perforation and carry out Short Time Heating；
4）, rolling, the hollow billet after secondary soaking is through on retained mandrel, then by three-roll cross rolling mill carry out undergauge,
Subtract wall, extension rolling, formed hollow forging, for pipe, undergauge 10-15 millimeters, subtract wall 0.5-1 millimeters, extension roll
Elongation percentage processed is 1.2）；
5）, de- pipe, the hollow forging after rolling deviates from from retained mandrel, and passing through the rotation of three-high mill, holding tube and material transfer lifting will
Hollow forging after rolling is taken out of；
6）, sizing truing, by hollow forging by sizing unit, carry out sizing, shaping, form hot production tube, it meets GB/T8162-
1999 standards；
7）, cooling, hot production tube cooled down by step cooling bed；
8）, finished product collect, the hot production tube after cooling is straightened, crop, inspection, packing, mark storage, formed commercial pipes.
Described step 2）In punch be two-roller skew-rolling formula punch.
Described step 3）In secondary soaking to 850-1050 degrees Celsius, soaking time is 3-5 minutes.
Described step 6）In sizing unit continuously arrange composition for 5-15 framves sizing mill.
When pipe is heated to more than 1150 DEG C in heating of pipe blank stove, perforated unit is rolled into hollow billet, by feeding mechanism
When feeding Sloping Hearth Heating Furnace is heated to more than 900 DEG C, rotary feeding mechanism and retained mandrel are passed to by discharging and material stirring-up mechanism
Hollow billet is through on retained mandrel by mechanism, sport car motion in advance, starts rotary feeding, and hollow billet is rotated into feeding roller trio skew rolling unit enters
Row rolling, by the operation of hydraulic restraint plug mechanism in the operation of rolling, carry out undergauge, subtract wall, extension rolling, formed waste
Pipe；Hollow forging after rolling is deviate from from retained mandrel, and last hollow forging carries out sizing truing by sizing unit, forms hot finished product
Pipe；Hot production tube after sizing is cooled down by step cooling bed；Hot production tube after final cooling is straightened, crop, inspection
Test, pack, marking storage, forming commercial pipes.Heating of pipe blank stove is supplied with Sloping Hearth Heating Furnace by gas furnace.
Claims (4)
1. steel pipe rolling technique, it is characterised in that comprise the following steps：
1）, heating, pipe is heated to more than 1150 DEG C in heating furnace；
2）, perforation, perforated machine enters eleven punch 11 to the pipe after heating, hollow billet is made；
3）, secondary soaking, manufactured hollow billet will be sent into Sloping Hearth Heating Furnace after perforation and carry out Short Time Heating；
4）, rolling, the hollow billet after secondary soaking is through on retained mandrel, then by three-roll cross rolling mill carry out undergauge,
Subtract wall, extension rolling, form hollow forging；
5）, de- pipe, the hollow forging after rolling deviates from from retained mandrel；
6）, sizing truing, by hollow forging by sizing unit, carry out sizing, shaping, form hot production tube；
7）, cooling, hot production tube cooled down by step cooling bed；
8）, finished product collect, the hot production tube after cooling is straightened, crop, inspection, packing, mark storage, formed commercial pipes.
2. technique according to claim 1, it is characterised in that：Described step 2）In punch wear for two-roller skew-rolling formula
Hole machine.
3. technique according to claim 1, it is characterised in that：Described step 3）In secondary soaking take the photograph to 850-1050
Family name's degree, soaking time are 3-5 minutes.
4. technique according to claim 1, it is characterised in that：Described step 6）In sizing unit be 5-15 frame sizings
Machine continuously arranges composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710994284.4A CN107737810A (en) | 2017-10-23 | 2017-10-23 | Steel pipe rolling technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710994284.4A CN107737810A (en) | 2017-10-23 | 2017-10-23 | Steel pipe rolling technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107737810A true CN107737810A (en) | 2018-02-27 |
Family
ID=61238119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710994284.4A Pending CN107737810A (en) | 2017-10-23 | 2017-10-23 | Steel pipe rolling technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107737810A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282997A (en) * | 2020-02-17 | 2020-06-16 | 包头钢铁（集团）有限责任公司 | Heat-resistant seamless steel tube 12Cr1MoVG hot continuous rolling production method |
| CN111633386A (en) * | 2020-06-08 | 2020-09-08 | 安徽孺子牛轴承有限公司 | Machining process for prolonging service life of bearing |
| CN113976629A (en) * | 2021-11-09 | 2022-01-28 | 北京科技大学 | Seamless pipe and preparation method thereof |
-
2017
- 2017-10-23 CN CN201710994284.4A patent/CN107737810A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282997A (en) * | 2020-02-17 | 2020-06-16 | 包头钢铁（集团）有限责任公司 | Heat-resistant seamless steel tube 12Cr1MoVG hot continuous rolling production method |
| CN111633386A (en) * | 2020-06-08 | 2020-09-08 | 安徽孺子牛轴承有限公司 | Machining process for prolonging service life of bearing |
| CN113976629A (en) * | 2021-11-09 | 2022-01-28 | 北京科技大学 | Seamless pipe and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180227 |
|
| WD01 | Invention patent application deemed withdrawn after publication |