CN109648019A - A kind of automobile axis class pipe fitting efficient green rolling mill practice - Google Patents
A kind of automobile axis class pipe fitting efficient green rolling mill practice Download PDFInfo
- Publication number
- CN109648019A CN109648019A CN201811369735.6A CN201811369735A CN109648019A CN 109648019 A CN109648019 A CN 109648019A CN 201811369735 A CN201811369735 A CN 201811369735A CN 109648019 A CN109648019 A CN 109648019A
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- China
- Prior art keywords
- pipe
- carries out
- hollow billet
- axis class
- cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
Abstract
The invention discloses a kind of automobile axis class pipe fitting efficient green rolling mill practices, comprising the following steps: S1 selects pipe, and produces required length to pipe cutting；The pipe of well cutting is transported in heating furnace by roll track, is heated by S2；S3, heating are completed, are punctured by punch；The hollow billet for puncturing completion is transported and carries out tube rolling in pipe mill, processed to hollow billet wall thickness by S4, roll track；Hollow billet after tube rolling is sent into size-reducing mill by S5, carries out sizing processing；S6, the blank that sizing is completed the process, to cooling roll track, and are cut by roll orbit transports；S7, the low hollow billet of aligning unit carry out aligning processing, and then cutting machine carries out scale processing, checks, obtains finished product.The present invention is generated without pernicious gas, environmentally protective, and simple process, while substantially increasing production efficiency.
Description
Technical field
The present invention relates to automobile manufacturing field more particularly to a kind of automobile axis class pipe fitting efficient green rolling mill practices.
Background technique
Since 20th century, world car annual output first in terms of thousands of, tens of thousands of, after in terms of ten million, until 1978
Reach 42,490,000 or so.Auto industry has become the world's largest process industry.The eighties, in the world 20 maximum industry
Having 6 in enterprise is auto maker.1980, whole world car ownership was about 3.35 hundred million, and wherein car is 2.65
Hundred million, goods vehicle and car are 70,000,000.The production and use of automobile, the face being related to are very wide.The seventies, in the world more than 20
There are about 5,000,000 people of worker, worker related with automobile, such as drivers to repair skilled worker, salesman for the maximum motor corporation of scale, family
With gas station worker etc., there are about 25,000,000 people.The U.S. is in the sixties, such as including road transport system and petroleum, rubber enterprise
Worker including, then in national every 7 workers i.e. have 1 people related with automobile, 1/6 enterprise and manufacture, sale, the service of automobile
It is related with using.36%, the 44% of cold-rolled steel sheet, the 43% of lead, the 61% of zinc and synthetic rubber of the steel band of the production seventies
62%, all it is used for the production and maintenance of automobile.The 1/7 of the economic total income of Japanese national is related with automobile.American and Britain, method, federal moral
7 state such as state, day, meaning and Canada is about 35,000,000 in the automobile of production in 1978.
Automobile parts production is particularly important, and prior art automobile axis class pipe fitting production process pollutes environment, production efficiency
Low, quality cannot be protected.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of automobile axis class pipe fitting proposed
Efficient green rolling mill practice.
To achieve the goals above, present invention employs following technical solutions:
A kind of automobile axis class pipe fitting efficient green rolling mill practice, comprising the following steps: S1 selects pipe, and cuts to pipe
Length required for producing；The pipe of well cutting is transported in heating furnace by roll track, is heated by S2；S3 has been heated
At being punctured by punch；S4, the hollow billet for puncturing completion is transported and carries out tube rolling in pipe mill by roll track, to hollow billet
Wall thickness is processed；Hollow billet after tube rolling is sent into size-reducing mill by S5, carries out sizing processing；S6 completes the process sizing
Blank, to cooling roll track, and is cut by roll orbit transports；S7, the low hollow billet of aligning unit carry out aligning processing, so
Cutting machine carries out scale processing afterwards, checks, obtains finished product.
Preferably, it in the S1, produces required pipe length and is calculated as follows:
In formula--- steel billet length, mm required for producing；--- pipe area of section, mm2；--- every hot rolling
Times footage of pipe；--- finished product pipe outside diameter and wall thickness, mm；--- production tube cut lengths, mm；=200~
500mm --- cutting head cutting tail (including notch) length, mm；--- consider the coefficient of scaling loss when heating of pipe blank, value and steel
Kind, stove pattern are related with heating operation.Usual annular furnace=0.98 ~ 0.99, wedged bottom continuous-type furnace=0.97
~0.98。
Preferably, in the S2,1100-1300 DEG C of heating temperature, time 5-8min.
Preferably, in the S3, pipe does not contact in perforation area in preparation with guide plate, or at least pipe first connects with roll
Touching is contacted with guide plate again after forming certain asynchronous region length (about 30~70mm), and the program that pipe leaves deformed area is that pipe is first
It is detached from top, then is detached from guide plate, finally leaves roll.
Preferably, in the S5, sizing processing includes stretch reducing, heating, expansion processing technology, heating temperature 800-
1000 DEG C, sizing mill is made of 3~12 framves, and reducing mill is made of 12~24 framves, reducing rate about 3~28%.
Preferably, in the S4, heavy wall hollow billet is rolled into thin-walled hollow forging by pipe mill, generally through 2~3 passages, is rolled down into
Product wall thickness, breaking elongation are about 1.8~2.2.
Preferably, in the S7, scale processing carries out waste material end to end to blank and cuts, and carries out scale by product requirement and cut
It cuts.
Compared with prior art, the beneficial effects of the present invention are:
1, of the invention, in the technical process, no pernicious gas is generated, environmentally protective, and simple process, while substantially increasing life
Produce efficiency.
2, of the invention, in the technical process, reach under the conditions of certain total reducing rate and lesser single chassis reducing rate
Sizing purpose, it can be achieved that using a kind of specification pipe production plurality of specifications production tube task, can also further improve steel pipe
Outer surface quality.
3, of the invention, deploy to the rational technology resource, the flexibility for increasing production, especially be reply high-volume, it is more
The market competitiveness of company is set to be strengthened when the demand in the market of kind, more specifications.
In the present invention, it is not directed to part in the technique and is the same as those in the prior art or can be realized by using the prior art,
The present invention is generated without pernicious gas, environmentally protective, and simple process, while substantially increasing production efficiency.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.
A kind of embodiment 1: automobile axis class pipe fitting efficient green rolling mill practice, comprising the following steps: S1 selects pipe,
And length required for being produced to pipe cutting；The pipe of well cutting is transported in heating furnace by roll track, is added by S2
Heat；S3, heating are completed, are punctured by punch；The hollow billet for puncturing completion is transported in pipe mill and is carried out by S4, roll track
Tube rolling processes hollow billet wall thickness；Hollow billet after tube rolling is sent into size-reducing mill by S5, carries out sizing processing；S6 will determine
The blank that diameter completes the process, to cooling roll track, and is cut by roll orbit transports；S7, the low hollow billet of aligning unit carry out
Aligning processing, then cutting machine carries out scale processing, checks, obtains finished product.
Preferably, it in the S1, produces required pipe length and is calculated as follows:
In formula--- steel billet length, mm required for producing；--- pipe area of section, mm2；--- every hot rolling
Times footage of pipe；--- finished product pipe outside diameter and wall thickness, mm；--- production tube cut lengths, mm；=200~
500mm --- cutting head cutting tail (including notch) length, mm；--- consider the coefficient of scaling loss when heating of pipe blank, value and steel
Kind, stove pattern are related with heating operation.Usual annular furnace=0.98 ~ 0.99, wedged bottom continuous-type furnace=0.97
~0.98。
In the S2,1100-1300 DEG C of heating temperature, time 5-8min.
In the S3, pipe does not contact in perforation area in preparation with guide plate, or at least pipe is first formed with roll contact
It is contacted again with guide plate after certain asynchronous region length (about 30~70mm), the program that pipe leaves deformed area is that pipe is first detached from top
Head, then it is detached from guide plate, finally leave roll.
In the S5, sizing processing includes stretch reducing, heating, expansion processing technology, 800-1000 DEG C of heating temperature, is determined
Diameter machine is made of 3~12 framves, and reducing mill is made of 12~24 framves, reducing rate about 3~28%, and fixed, reducing mill calculates:
--- cutting head, back-end crop length, mm；
--- rack spacing, general Cd=(0.9~1.0) D0；D0 is roll ideal noise diode, mm；
--- the total coefficient of elongation (generally 2~2.5)；
Redder formula (is suitable for big extend)
--- total wall thickness reducing amount, mm；
No-station pole canopy determines the empirical equation of wall thickness change when tube reducing:
Formula one,
ScWhen < 15mm,
When thick-walled pipe,
Formula two,mm
In the S4, heavy wall hollow billet is rolled into thin-walled hollow forging by pipe mill, generally through 2~3 passages, is rolled down to finished product wall thickness, is always prolonged
The rate of stretching is about 1.8~2.2.
In the S7, scale processing carries out waste material end to end to blank and cuts, and carries out Length-fixing cutting by product requirement.
Reach sizing purpose under the conditions of the present embodiment certain total reducing rate and lesser single chassis reducing rate, it can be achieved that
Using a kind of task of specification pipe production plurality of specifications production tube, it can also further improve the outer surface quality of steel pipe.
A kind of embodiment 2: automobile axis class pipe fitting efficient green rolling mill practice, comprising the following steps: S1 selects pipe,
And length required for being produced to pipe cutting；The pipe of well cutting is transported in heating furnace by roll track, is added by S2
Heat；S3, heating are completed, are punctured by punch；The hollow billet for puncturing completion is transported in pipe mill and is carried out by S4, roll track
Tube rolling processes hollow billet wall thickness；Hollow billet after tube rolling is sent into size-reducing mill by S5, carries out sizing processing；S6 will determine
The blank that diameter completes the process, to cooling roll track, and is cut by roll orbit transports；S7, the low hollow billet of aligning unit carry out
Aligning processing, then cutting machine carries out scale processing, checks, obtains finished product.
In the S1, produces required pipe length and is calculated as follows:
In formula--- steel billet length, mm required for producing；--- pipe area of section, mm2；--- every hot rolling
Times footage of pipe；--- finished product pipe outside diameter and wall thickness, mm；--- production tube cut lengths, mm；=200~
500mm --- cutting head cutting tail (including notch) length, mm；--- consider the coefficient of scaling loss when heating of pipe blank, value and steel
Kind, stove pattern are related with heating operation.Usual annular furnace=0.98 ~ 0.99, wedged bottom continuous-type furnace=0.97
~0.98。
In the S2,1100-1300 DEG C of heating temperature, time 5-8min.
In the S3, pipe does not contact in perforation area in preparation with guide plate, or at least pipe is first formed with roll contact
It is contacted again with guide plate after certain asynchronous region length (about 30~70mm), the program that pipe leaves deformed area is that pipe is first detached from top
Head, then it is detached from guide plate, finally leave roll.
In the S5, sizing processing includes stretch reducing, heating, expansion processing technology, 800-1000 DEG C of heating temperature, is determined
Diameter machine is made of 3~12 framves, and reducing mill is made of 12~24 framves, reducing rate about 3~28%.
In the S4, heavy wall hollow billet is rolled into thin-walled hollow forging by pipe mill, generally through 2~3 passages, is rolled down to finished product wall thickness,
Breaking elongation is about 1.8~2.2.
In the S7, scale processing carries out waste material end to end to blank and cuts, and carries out Length-fixing cutting by product requirement.
Tube rolling subtracts the process of wall:
The present embodiment unit high production efficiency, lengthening coefficient big (μ > 6) can roll the hollow forging up to 30 meters or more, product quality
Good (being embodied on surfaces externally and internally), wall thickness accuracy are high；Kind, specification limit are wide, can produce carbon guiding principle, steel alloy, and can produce
Stainless steel；The thin-wall tube of D/S > 45 can be produced, production cost is low, and metal consumption is low；It is suitble to high-volume continuous production.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of automobile axis class pipe fitting efficient green rolling mill practice, which comprises the following steps:
S1 selects pipe, and produces required length to pipe cutting；
The pipe of well cutting is transported in heating furnace by roll track, is heated by S2；
S3, heating are completed, are punctured by punch；
The hollow billet for puncturing completion is transported and carries out tube rolling in pipe mill, processed to hollow billet wall thickness by S4, roll track；
Hollow billet after tube rolling is sent into size-reducing mill by S5, carries out sizing processing；
S6, the blank that sizing is completed the process, to cooling roll track, and are cut by roll orbit transports；
S7, the low hollow billet of aligning unit carry out aligning processing, and then cutting machine carries out scale processing, checks, obtains finished product.
2. a kind of automobile axis class pipe fitting efficient green rolling mill practice according to claim 1, which is characterized in that the S1
In, it produces required pipe length and is calculated as follows:
In formula--- steel billet length, mm required for producing；--- pipe area of section, mm2；--- every hot rolling
Times footage of pipe；--- finished product pipe outside diameter and wall thickness, mm；--- production tube cut lengths, mm；=200~
500mm --- cutting head cutting tail (including notch) length, mm；--- consider the coefficient of scaling loss when heating of pipe blank, value and steel
Kind, stove pattern are related with heating operation, usual annular furnace=0.98 ~ 0.99, wedged bottom continuous-type furnace=0.97
~0.98。
3. a kind of automobile axis class pipe fitting efficient green rolling mill practice according to claim 1, which is characterized in that the S2
In, 1100-1300 DEG C of heating temperature, time 5-8min.
4. a kind of automobile axis class pipe fitting efficient green rolling mill practice according to claim 1, which is characterized in that the S3
In, pipe does not contact in perforation area in preparation with guide plate, or at least pipe first forms certain deformation head of district with roll contact
It being contacted again with guide plate after degree (about 30~70mm), the program that pipe leaves deformed area is that pipe is first detached from top, then is detached from guide plate,
Finally leave roll.
5. a kind of automobile axis class pipe fitting efficient green rolling mill practice according to claim 1, which is characterized in that the S5
In, sizing processing includes stretch reducing, heating, expansion processing technology, and 800-1000 DEG C of heating temperature, sizing mill is by 3~12 framves
Composition, reducing mill are made of 12~24 framves, reducing rate about 3~28%.
6. a kind of automobile axis class pipe fitting efficient green rolling mill practice according to claim 1, which is characterized in that the S4
In, heavy wall hollow billet is rolled into thin-walled hollow forging by pipe mill, generally through 2~3 passages, is rolled down to finished product wall thickness, breaking elongation is about 1.8
~2.2.
7. a kind of automobile axis class pipe fitting efficient green rolling mill practice according to claim 1, which is characterized in that the S7
In, scale processing carries out waste material end to end to blank and cuts, and carries out Length-fixing cutting by product requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811369735.6A CN109648019A (en) | 2018-11-17 | 2018-11-17 | A kind of automobile axis class pipe fitting efficient green rolling mill practice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811369735.6A CN109648019A (en) | 2018-11-17 | 2018-11-17 | A kind of automobile axis class pipe fitting efficient green rolling mill practice |
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| Publication Number | Publication Date |
|---|---|
| CN109648019A true CN109648019A (en) | 2019-04-19 |
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ID=66111337
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|---|---|---|---|
| CN201811369735.6A Pending CN109648019A (en) | 2018-11-17 | 2018-11-17 | A kind of automobile axis class pipe fitting efficient green rolling mill practice |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1502425A (en) * | 2002-11-25 | 2004-06-09 | 宝山钢铁股份有限公司 | Method for mfg of high-quality seamless steel pipe |
| CN101020190A (en) * | 2007-03-21 | 2007-08-22 | 中冶东方工程技术有限公司 | Hot rolling process of seamless steel pipe |
| CN201253641Y (en) * | 2008-07-30 | 2009-06-10 | 郝建庚 | Hot rolled seamless steel tube manufacturing system |
| CN101972776A (en) * | 2010-11-04 | 2011-02-16 | 胡顺珍 | Hot rolling production process of automatic tube rolling mill |
| CN102814330A (en) * | 2012-09-06 | 2012-12-12 | 济南重工股份有限公司 | Process and device for producing hot-rolled seamless steel pipe |
-
2018
- 2018-11-17 CN CN201811369735.6A patent/CN109648019A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1502425A (en) * | 2002-11-25 | 2004-06-09 | 宝山钢铁股份有限公司 | Method for mfg of high-quality seamless steel pipe |
| CN101020190A (en) * | 2007-03-21 | 2007-08-22 | 中冶东方工程技术有限公司 | Hot rolling process of seamless steel pipe |
| CN201253641Y (en) * | 2008-07-30 | 2009-06-10 | 郝建庚 | Hot rolled seamless steel tube manufacturing system |
| CN101972776A (en) * | 2010-11-04 | 2011-02-16 | 胡顺珍 | Hot rolling production process of automatic tube rolling mill |
| CN102814330A (en) * | 2012-09-06 | 2012-12-12 | 济南重工股份有限公司 | Process and device for producing hot-rolled seamless steel pipe |
Non-Patent Citations (1)
| Title |
|---|
| 吴坚编著: "《轧钢设备及工艺 第3分册 钢管生产》", 31 December 1985 * |
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Application publication date: 20190419 |