CN101804418A - Grouping double-roller diameter fixing and reducing machine - Google Patents
Grouping double-roller diameter fixing and reducing machine Download PDFInfo
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- CN101804418A CN101804418A CN 201010162252 CN201010162252A CN101804418A CN 101804418 A CN101804418 A CN 101804418A CN 201010162252 CN201010162252 CN 201010162252 CN 201010162252 A CN201010162252 A CN 201010162252A CN 101804418 A CN101804418 A CN 101804418A
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- roller
- roll
- rolling
- unit
- diameter fixing
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Abstract
The invention discloses a grouping double-roller diameter fixing and reducing machine which belongs to the technical problem of easy inner square generation when a double-roller diameter fixing and reducing machine is used for rolling a steel pipe. The machine comprises roller stands and two rollers, wherein the two rollers which are configured in parallel in an angle of 180 DEG are installed on the roller frames; two roller stands sequentially form a rolling unit from the first roller stand to the last roller stand along a rolling line direction; roller seams of the two roller stands in each rolling unit have an included angle of 90 DEG; and the roller seam of each roller stand in each rolling unit from the first roller unit to the last roller unit along the rolling line direction and the roller seam of each roller stand in the adjacent rolling units have an included angle of 45 DEG. The invention improves the diameter fixing and reducing quality of the thin-wall steel pipe.
Description
Technical field
The present invention relates to a kind of metallurgy industry seamless steel pipe production, particularly relate to a kind of size-reducing mill that is used for seamless steel pipe.
Background technology
At present, in smelter seamless steel pipe hot-rolling production equipment, double-roller diameter fixing and reducing machine is one of main finishing equipment of seamless steel pipe hot-rolling production, and it is used for the steel pipe behind the tandem rolling is realized that steel pipe is decided tube reducing and rule are round.Roll stand is made up of 2 rolls, and two rolls are mutually 180 ° of configured in parallel, adjacent frame interlaced arrangement, and the roll gap angle is 90 °.But owing to the sizing reduction on and the pass width poor in the footpath of the roller on the pass width is poor, the steel pipe that uses this equipment to be rolled into is easy to generate " interior four directions ".When using many and wall thickness steel pipe of frame number thicker, more be easy to generate interior four directions, had a strong impact on pipe quality.
Summary of the invention
Grouping double-roller diameter fixing and reducing machine provided by the invention solved existing two roller diameter fixing and reducing machines when rolled steel tube, be easy to generate in cubic technical problem.
The present invention overcomes the above problems by following scheme:
Grouping double-roller diameter fixing and reducing machine, comprise roll stand and be installed on the roll stand two rolls of 180 ° of configured in parallel each other, along the roll line direction since first roll stand till the last roll stand, two roll stands are formed a rolling unit successively, the angle of the roller gap of two roll stands in each rolling unit is 90 °, along the roll line direction since the first roll unit till the last roll unit roller gap of every roll stand in each rolling unit respectively and the angle the roller gap of every roll stand in the adjacent rolling unit be 45 °.
Described rolling unit is set to 2-15.
The present invention has improved the quality of thick walled steel tube being decided tube reducing, and the precision of wall thickness is improved greatly.
Description of drawings:
Fig. 1 is the structure chart of rolling unit number of the present invention when being 6 unit
The specific embodiment
Grouping double-roller diameter fixing and reducing machine, comprise roll stand and be installed on the roll stand two rolls of 180 ° of configured in parallel each other, along the roll line direction since first roll stand till the last roll stand, two roll stands are formed a rolling unit successively, the angle of the roller gap of two roll stands in each rolling unit is 90 °, along the roll line direction since the first roll unit till the last roll unit roller gap of every roll stand in each rolling unit respectively and the angle the roller gap of every roll stand in the adjacent rolling unit be 45 °.
Described rolling unit is set to 2-15.
The present invention is applicable to that total frame counts two roller diameter fixing and reducing machines of 2-30 frame, is specially adapted to two roller diameter fixing and reducing machines of 12 frames.
Claims (2)
1. grouping double-roller diameter fixing and reducing machine, comprise roll stand and be installed on the roll stand two rolls of 180 ° of configured in parallel each other, along the roll line direction since first roll stand till the last roll stand, two roll stands are formed a rolling unit successively, the angle of the roller gap of two roll stands in each rolling unit is 90 °, it is characterized in that: along the roll line direction since the first roll unit till the last roll unit roller gap of every roll stand in each rolling unit respectively and the angle the roller gap of every roll stand in the adjacent rolling unit be 45 °.
2. grouping double-roller diameter fixing and reducing machine according to claim 1 is characterized in that: described rolling unit is set to 2-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010162252 CN101804418A (en) | 2010-04-30 | 2010-04-30 | Grouping double-roller diameter fixing and reducing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010162252 CN101804418A (en) | 2010-04-30 | 2010-04-30 | Grouping double-roller diameter fixing and reducing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101804418A true CN101804418A (en) | 2010-08-18 |
Family
ID=42606466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010162252 Pending CN101804418A (en) | 2010-04-30 | 2010-04-30 | Grouping double-roller diameter fixing and reducing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101804418A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5360861A (en) * | 1976-11-12 | 1978-05-31 | Ishikawajima Harima Heavy Ind | Rolling apparatus |
| JPS5744411A (en) * | 1980-08-29 | 1982-03-12 | Kawasaki Steel Corp | Controlling method for outer diameter of pipe in pipe sizing machine |
| JPH06134502A (en) * | 1992-10-26 | 1994-05-17 | Sumitomo Heavy Ind Ltd | Method for rolling round bar/wire rod and rolling device used therefor |
-
2010
- 2010-04-30 CN CN 201010162252 patent/CN101804418A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5360861A (en) * | 1976-11-12 | 1978-05-31 | Ishikawajima Harima Heavy Ind | Rolling apparatus |
| JPS5744411A (en) * | 1980-08-29 | 1982-03-12 | Kawasaki Steel Corp | Controlling method for outer diameter of pipe in pipe sizing machine |
| JPH06134502A (en) * | 1992-10-26 | 1994-05-17 | Sumitomo Heavy Ind Ltd | Method for rolling round bar/wire rod and rolling device used therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100818 |