CN101077505A - Seamless steel pipe restraint tandem rolling short flowpath roller milling process - Google Patents
Seamless steel pipe restraint tandem rolling short flowpath roller milling process Download PDFInfo
- Publication number
- CN101077505A CN101077505A CN 200710062246 CN200710062246A CN101077505A CN 101077505 A CN101077505 A CN 101077505A CN 200710062246 CN200710062246 CN 200710062246 CN 200710062246 A CN200710062246 A CN 200710062246A CN 101077505 A CN101077505 A CN 101077505A
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- Prior art keywords
- pipe
- steel pipe
- seamless steel
- rolling
- hollow
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- 238000005096 rolling process Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 238000003801 milling Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000005242 forging Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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Abstract
The present invention relates to short rolling process of seamless steel pipe, and is especially one short seamless steel pipe rolling process with integrated pipe extracting and reducing step. The technological scheme of the present invention is that the short seamless steel pipe rolling process includes the following steps: 1. piercing the homogeneously heated pipe blank in a piercing machine to form hollow billet; 2. continuously rolling the hollow billet in an arresting pipe rolling mill; and 3. integrally rolling in a pipe extracting and reducing mill to obtain seamless steel pipe product. The present invention has short technological process, low cost and high steel pipe quality.
Description
Technical field
The present invention relates to the milling method of the short flow process of a kind of seamless steel pipe restraint tandem rolling, it belongs to a kind of short flow process continuous rolling process that will take off the seamless steel pipe that pipe and tube reducing be integrated.
Background technology
The manufacture method of producing now seamless steel pipe be with pipe send into be heated in the heating furnace require temperature after, deliver in the punch and bore a hole, the hollow hollow billet base that then will bore a hole is sent in the restraint tandem rolling pipe machine and is rolled into hollow forging, through taking off the Guan Houzai heating, the steel pipe that heats is again delivered in the tube reducing equipment be rolled into fished pipe at last again.Therefore, the manufacture method of existing seamless steel pipe exists shortcomings such as technological process length, production cost height.
Summary of the invention
The manufacture method that the objective of the invention is to solve existing seamless steel pipe exists the technological difficulties that technological process is long, production cost is high and provides that a kind of technological process is short, production cost is low and the milling method of the short flow process of the seamless steel pipe restraint tandem rolling of good product quality.
The present invention for the technical scheme that solves above-mentioned technological difficulties and adopt is: the milling method of the short flow process of a kind of seamless steel pipe restraint tandem rolling, and it is finished by the following step:
A), at first the pipe with homogeneous heating is rolled into hollow hollow billet through punch,
B), in restraint tandem rolling pipe machine, hollow hollow billet continuous rolling is become hollow forging,
C), restraint rolling take off in the rod motion hollow forging taken off carry out integrated rollingly in the pipe reducing mill, directly produce fished pipe.
Above-mentioned frame quantity of taking off the pipe reducing mill is 6～24, and the reducing rate that takes off the pipe reducing mill is 5%～55%.
Because the present invention has adopted the technical scheme of said method, has shortened the technological process of steel pipe rolling, has saved cost of investment, has reduced oxidizing process, has improved pipe quality.Therefore, compare with background technology, the present invention has the advantage that technological process is short, cost of investment is few, pipe quality is good and production cost is low.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment.
The milling method of the short flow process of a kind of seamless steel pipe restraint tandem rolling in the present embodiment, it is finished by the following step:
A), at first the pipe with homogeneous heating is rolled into hollow hollow billet through punch,
B), then in the retained mandrel mandrel rolling mill that adopts 4 to 7 groups of frames, hollow hollow billet continuous rolling is become hollow forging,
C), then restraint rolling take off in the rod motion hollow forging taken off carry out integrated rollingly in the pipe reducing mill, directly produce fished pipe.
Above-mentioned frame quantity of taking off the pipe reducing mill is 6～24, and the reducing rate that takes off the pipe reducing mill is 5%～55%.
Claims (2)
1, the milling method of the short flow process of a kind of seamless steel pipe restraint tandem rolling, it is characterized in that: it is finished by the following step:
A), at first the pipe with homogeneous heating is rolled into hollow hollow billet through punch,
B), in restraint tandem rolling pipe machine, hollow hollow billet continuous rolling is become hollow forging,
C), restraint rolling take off in the rod motion hollow forging taken off carry out integrated rollingly in the pipe reducing mill, directly produce fished pipe.
2, the milling method of the short flow process of a kind of seamless steel pipe restraint tandem rolling according to claim 1 is characterized in that: described frame quantity of taking off the pipe reducing mill is 6～24, and the reducing rate that takes off the pipe reducing mill is 5%～55%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710062246 CN101077505A (en) | 2007-06-27 | 2007-06-27 | Seamless steel pipe restraint tandem rolling short flowpath roller milling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710062246 CN101077505A (en) | 2007-06-27 | 2007-06-27 | Seamless steel pipe restraint tandem rolling short flowpath roller milling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101077505A true CN101077505A (en) | 2007-11-28 |
Family
ID=38905265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710062246 Pending CN101077505A (en) | 2007-06-27 | 2007-06-27 | Seamless steel pipe restraint tandem rolling short flowpath roller milling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101077505A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954377A (en) * | 2010-09-13 | 2011-01-26 | 胡顺珍 | Full-floating mandrel tandem-rolling seamless steel pipe production process |
| CN102009069A (en) * | 2010-09-13 | 2011-04-13 | 胡顺珍 | Manufacturing process of small-caliber hot rolling seamless steel tubes |
| CN102405114A (en) * | 2009-04-20 | 2012-04-04 | 住友金属工业株式会社 | Manufacturing method and manufacturing equipment of seamless steel pipe |
| CN101468360B (en) * | 2007-12-25 | 2012-05-23 | 无锡西姆莱斯石油专用管制造有限公司 | Seamless oil well steel pipe restraint tandem rolling processing equipment |
| CN103752625A (en) * | 2014-01-20 | 2014-04-30 | 中南大学 | Method for optimizing rolling schedule in multi-target seamless steel pipe continuous rolling process |
| CN104384191A (en) * | 2014-10-17 | 2015-03-04 | 天津钢管集团股份有限公司 | Piercing and hot rolling production method for P92 ferrite heat-resistant seamless steel pipe |
| CN104826868A (en) * | 2015-02-10 | 2015-08-12 | 长葛市一鸣机械有限公司 | Floating Mandrel Continuous Rolling Mill for Small Diameter Seamless Steel Tube and Production Technology of Seamless Steel Tube |
-
2007
- 2007-06-27 CN CN 200710062246 patent/CN101077505A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468360B (en) * | 2007-12-25 | 2012-05-23 | 无锡西姆莱斯石油专用管制造有限公司 | Seamless oil well steel pipe restraint tandem rolling processing equipment |
| CN102405114A (en) * | 2009-04-20 | 2012-04-04 | 住友金属工业株式会社 | Manufacturing method and manufacturing equipment of seamless steel pipe |
| CN101954377A (en) * | 2010-09-13 | 2011-01-26 | 胡顺珍 | Full-floating mandrel tandem-rolling seamless steel pipe production process |
| CN102009069A (en) * | 2010-09-13 | 2011-04-13 | 胡顺珍 | Manufacturing process of small-caliber hot rolling seamless steel tubes |
| CN103752625A (en) * | 2014-01-20 | 2014-04-30 | 中南大学 | Method for optimizing rolling schedule in multi-target seamless steel pipe continuous rolling process |
| CN103752625B (en) * | 2014-01-20 | 2016-09-28 | 中南大学 | A kind of multiobject seamless steel pipe continuous rolling process rolling schedule optimization method |
| CN104384191A (en) * | 2014-10-17 | 2015-03-04 | 天津钢管集团股份有限公司 | Piercing and hot rolling production method for P92 ferrite heat-resistant seamless steel pipe |
| CN104826868A (en) * | 2015-02-10 | 2015-08-12 | 长葛市一鸣机械有限公司 | Floating Mandrel Continuous Rolling Mill for Small Diameter Seamless Steel Tube and Production Technology of Seamless Steel Tube |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20071128 |