CN101653781B - Perforation production new technique of hot rolling large-diameter steel pipe - Google Patents
Perforation production new technique of hot rolling large-diameter steel pipe Download PDFInfo
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- CN101653781B CN101653781B CN2009100754455A CN200910075445A CN101653781B CN 101653781 B CN101653781 B CN 101653781B CN 2009100754455 A CN2009100754455 A CN 2009100754455A CN 200910075445 A CN200910075445 A CN 200910075445A CN 101653781 B CN101653781 B CN 101653781B
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Abstract
The invention discloses a perforation production new technique of a hot rolling large-diameter steel pipe, aiming at solving the problems that when in once perforation and secondary perforation of the existing technique for producing the large-diameter steel pipe, the energy is consumed, and the degree of burning loss and the degree of oxidation of the steel pipe are increased. The new technique comprises the technical steps: a recycling briar dress replacing device of a penetrating ejector rob top I and a recycling briar dress replacing device of a penetrating ejector rob top II are respectively arranged at the two sides of a background rolling line of a perforating machine; a shifting device of the steel pipe is arranged between foreground and background of the perforating machine; after a heating tube blank is perforated for a first time, a separated tubular billet is transferred back to the foreground of the perforating machine by the shifting device of the steel pipe; the rolling line is moved onto a support frame of the penetrating ejector rob top I by the recycling briar dress replacing device of the penetrating ejector rob top I; and the penetrating ejector rob top II arranged on a support frame of the penetrating ejector rob top II is moved onto the rolling line of the background of the perforating machine by the recycling briar dress replacing device of the penetrating ejector rob top II, and then the steel tube is perforated for a second time. Therefore, the new technique reduces the equipment investment and the running cost.
Description
Technical field
The present invention relates to a kind of production technology of smelter seamless steel pipe.
Background technology
When large-diameter steel pipe was produced, first method was after boring a hole with a punch, treated to carry out reconditioning or processing after the steel pipe cooling, and this method workman's labour intensity is big, and work situation is poor, and production efficiency is low, and the rate of becoming a useful person of product is low.Second method is after boring a hole with a punch, to carry out the drilling/rolling second time at another punch, and this method has been brought and invested the high shortcoming of big operating cost.The third method is after a punch is bored a hole in batch, by changing the rolling tool of this punch, carry out again the drilling/rolling second time after steel pipe heated again, the shortcoming of this method is that steel pipe need heat twice, increase energy consumption, strengthened again scaling loss and the oxidation of steel pipe.
Summary of the invention
The invention solves existing large-diameter steel pipe and on a punch, change push rod during secondary punch and come directly towards length consuming time, and need to pipe carry out increase that post bake brings energy consumption strengthened again the scaling loss of steel pipe and the technical problem of oxidation.
The present invention is by the above problem of following solution:
A kind of perforation production technology of hot rolling large-diameter steel pipe comprises following processing step:
The first step, the circulation material toggling circulation material toggling changing device more of changing device and the push rod top of boring a hole for the second time more that the push rod top of boring a hole for the first time is set respectively in perforator background roll line both sides;
Second goes on foot, is provided with the transporting apparatus of steel pipe between punch foreground and backstage;
The 3rd step, heating pipe arrange the push rod top of boring a hole for the first time at the backstage of punch roll line, the second time of the backstage of punch roll line one side bore a hole the push rod top the circulation material toggling more changing device the push rod top of boring a hole for the second time is set;
The 4th step, pipe cooperated with the push rod top of boring a hole for the first time on the drilling/rolling line be rolled;
Hollow billet after the 5th step, the push rod of will boring a hole for the first time top and the perforation first time separates;
The 6th step, the hollow billet after separating are transferred go back to the foreground of punch by the transporting apparatus of steel pipe, bore a hole for the first time the push rod top by the circulation material toggling of the push rod top of boring a hole for the first time more changing device dial and leave on roll line bores a hole the bracing frame that push rod comes directly towards to the first time;
The 7th step, for the second time bore a hole the push rod top the circulation material toggling more changing device will be arranged on the push rod top of boring a hole for the second time on the bracing frame of the push rod top of boring a hole for the second time and push on the backstage roll line of punch;
The 8th step, will transfer back the hollow billet after the first time perforation on punch foreground and push the push rod of boring a hole for the second time on the perforator background roll line and come directly towards to join and close rollingly, finish secondary punch;
Collect after the steel pipe discharging after the 9th step, for the second time perforation, the circulation material toggling of push rod top of boring a hole for the second time is after more changing device pushes the push rod top of boring a hole the second time on the roll line on the bracing frame of the push rod top of boring a hole for the second time, and the circulation material toggling of the push rod top of boring a hole for the first time more changing device is bored a hole push rod top clawback to the roll line of punch at the first time that will bore a hole for the first time on the bracing frame of push rod top;
The tenth the step, to next pipe carry out the above-mentioned the 4th go on foot the 9th the step cycling, finish the piercing process second time to a collection of steel pipe.
The present invention compares with existing various production methods, namely reduces equipment investment and operating cost, has improved widely again workman's work situation and labour intensity, has improved simultaneously product quality.
Description of drawings
Fig. 1 is a structural representation of realizing equipment horizontal layout of the present invention
The specific embodiment
Below in conjunction with accompanying drawing production technology of the present invention is described:
Carry out boring a hole for the first time interval circulation of push rod top and the push rod top of boring a hole for the second time of roll line on the backstage 4 of a punch 2 arranges.After the pipe that heats enters punch foreground 1, after main frame 2 pierces into hollow steel pipe 8, the push rod 6 of boring a hole for the first time separates with hollow steel pipe 8, hollow steel pipe 8 returns on the punch foreground 1 by steel pipe conveying equipment 7, bore a hole for the first time the push rod top the circulation material toggling more changing device will bore a hole for the first time after the push rod top is transplanted on the bracing frame of the push rod top of boring a hole for the first time, the circulation material toggling of the push rod top of boring a hole for the second time more pushes on the backstage roll line of punch steel pipe is carried out the drilling/rolling second time in the changing device push rod top of will boring a hole for the second time.
Claims (1)
1. the perforation production technology of a hot rolling large-diameter steel pipe comprises following processing step:
The first step, the circulation material toggling circulation material toggling changing device more of changing device and the push rod top of boring a hole for the second time more that the push rod top of boring a hole for the first time is set respectively in perforator background roll line both sides;
Second goes on foot, is provided with the transporting apparatus of steel pipe between punch foreground and backstage;
The 3rd step, heating pipe arrange the push rod top of boring a hole for the first time at the backstage of punch roll line, the second time of the backstage of punch roll line one side bore a hole the push rod top the circulation material toggling more changing device the push rod top of boring a hole for the second time is set;
The 4th step, pipe cooperated with the push rod top of boring a hole for the first time on the drilling/rolling line be rolled;
Hollow billet after the 5th step, the push rod of will boring a hole for the first time top and the perforation first time separates;
The 6th step, the hollow billet after separating are transferred go back to the foreground of punch by the transporting apparatus of steel pipe, bore a hole for the first time the push rod top by the circulation material toggling of the push rod top of boring a hole for the first time more changing device dial and leave on roll line bores a hole the bracing frame that push rod comes directly towards to the first time;
The 7th step, for the second time bore a hole the push rod top the circulation material toggling more changing device will be arranged on the push rod top of boring a hole for the second time on the bracing frame of the push rod top of boring a hole for the second time and push on the backstage roll line of punch;
Hollow billet after bore a hole the 8th first time that goes on foot, will transfer go back to the punch foreground cooperates rolling with the push rod top of boring a hole the second time on pushing the perforator background roll line, finish for the second time perforation;
Collect after the steel pipe discharging after the 9th step, for the second time perforation, the circulation material toggling of push rod top of boring a hole for the second time is after more changing device pushes the push rod top of boring a hole the second time on the roll line on the bracing frame of the push rod top of boring a hole for the second time, and the circulation material toggling of the push rod top of boring a hole for the first time more changing device is bored a hole push rod top clawback to the roll line of punch at the first time that will bore a hole for the first time on the bracing frame of push rod top;
The tenth the step, to next pipe carry out the above-mentioned the 4th go on foot the 9th the step cycling, finish the piercing process second time to a collection of steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100754455A CN101653781B (en) | 2009-09-15 | 2009-09-15 | Perforation production new technique of hot rolling large-diameter steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100754455A CN101653781B (en) | 2009-09-15 | 2009-09-15 | Perforation production new technique of hot rolling large-diameter steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101653781A CN101653781A (en) | 2010-02-24 |
| CN101653781B true CN101653781B (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100754455A Active CN101653781B (en) | 2009-09-15 | 2009-09-15 | Perforation production new technique of hot rolling large-diameter steel pipe |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343362A (en) * | 2010-08-03 | 2012-02-08 | 扬州龙川钢管有限公司 | Perforating and extending integrated machine |
| CN102343360A (en) * | 2010-08-03 | 2012-02-08 | 扬州龙川钢管有限公司 | Composite roll piercing mill for producing large-bore seamless steel tube |
| CN102303048A (en) * | 2011-09-19 | 2012-01-04 | 太原重工股份有限公司 | Continuous piercing method for seamless steel tube |
| CN103331325A (en) * | 2013-06-18 | 2013-10-02 | 中兴能源装备股份有限公司 | Method for manufacturing ultra-large-diameter pipeline |
| CN104438333A (en) * | 2014-12-10 | 2015-03-25 | 西北工业大学 | Tri-roller reciprocating type skew rolling technique of seamless pipes |
| CN105834217A (en) * | 2016-03-25 | 2016-08-10 | 江苏武进不锈股份有限公司 | Preparation process of large-diameter duplex stainless steel seamless steel tube and application to oceanographic engineering |
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2009
- 2009-09-15 CN CN2009100754455A patent/CN101653781B/en active Active
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| CN101653781A (en) | 2010-02-24 |
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