CN101927260A - Seamless steel pipe hot-rolling multiple perforation production process - Google Patents
Seamless steel pipe hot-rolling multiple perforation production process Download PDFInfo
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- CN101927260A CN101927260A CN 201010225484 CN201010225484A CN101927260A CN 101927260 A CN101927260 A CN 101927260A CN 201010225484 CN201010225484 CN 201010225484 CN 201010225484 A CN201010225484 A CN 201010225484A CN 101927260 A CN101927260 A CN 101927260A
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Abstract
The invention discloses a seamless steel pipe hot-rolling multiple perforation production process, which comprises the following steps of: conveying a solid pipe blank from a pipe blank heating furnace to a front table of a first perforation machine through a conveying roller way; feeding the pipe blank into an acceptable trough by using a feeding machine; starting a steel pusher to push the pipe blank into the first perforation machine for perforation; turning a produced hollow pierced billet out and delivering the hollow pierced billet to the front table of the perforation machine by using a pipe turning device, and feeding the hollow pierced billet into a spiral lifting inclined roller way by using the pipe turning device; and allowing the hollow pierced pipe billet to enter the perforation machine behind for perforation again to obtain the hollow pierced pipe meeting a certain requirement. The seamless steel pipe hot-rolling multiple perforation production process has the advantages that: the pipe blank of the same specification and diameter can be produced into the seamless steel pipe with relatively large specification and diameter; or the pipe blank of relative small specification and diameter can be produced into the seamless steel pipe of the relatively large specification and diameter after perforation, diameter expansion and extension for three times. The seamless steel pipe hot-rolling multiple perforation production process has the advantages of simple production equipment, short process flow, low equipment investment, low production cost and the like.
Description
Technical field
The present invention relates to a kind of seamless steel tube production technology, belong to the rolling manufacture field of metal tube.
Background technology
Seamless steel pipe has a wide range of applications in each field as a kind of structural material and means of transport.Along with the continuous progress and the development of modern science and technology, particularly a lot of manufacturing technique methods has appearred in different according to range of application, material and the size of seamless steel pipe.
At present, the production technology of typical seamless steel pipe is at first solid pipe to be placed on and to be heated to uniform temperature in the heating furnace, entering punch then bores a hole, form hollow hollow forging, pass through cold-drawn (cold rolling) or tube rolling afterwards and decide the tube reducing operation, manufacture the steel pipe that meets product standard.Through above-mentioned technology, solid pipe becomes the seamless steel pipe of certain specification diameter at last via hollow hollow forging.But, the subject matter that the existing mode of production exists is, in whole perforation process, generally can only be processed into the pipe or the diameter hollow pipe littler of (big slightly) diameter on an equal basis than pipe diameter with great pipe, and to produce bigbore pipe, certainly will need to increase the diameter of pipe, and need the perforating apparatus of equipment corresponding size specification.Cause wholely make that outer diameter of steel pipes increases, occur equipment enlarging in the process of tube wall attenuation, complex process, efficient are lower, realize shortcomings such as consumption of raw materials is excessive in the finished product state procedure, energy resource consumption is big.Utility model (application number: 200920101262.1) proposed a kind ofly to comprise multiple punching (hole enlargement extension), repeatedly expansion technology is in the technical scheme of interior a kind of multi-functional unit, can make the problems referred to above obtain improving to a certain degree, by contrast, similarly produce a kind of bigbore steel pipe, this scheme has that equipment investment is few, production technology and operation is fairly simple, the characteristics of easy grasp, is specially adapted to produce large-diameter thin-wall seamless steel pipe.
Summary of the invention
At the problems referred to above, the present invention proposes a kind of horizontal perforated machine that utilizes, hollow hollow forging is carried out secondary or three times and above perforation, make hollow famine be in control the technical scheme that effective hole enlargement is extended.
Technical scheme of the present invention is, solid pipe is through the hollow hollow forging of first punch perforation having become, then this hollow hollow forging that has been shaped is put into second punch and bore a hole after (hole enlargement extension), again according to the requirement of production product specification three punches of needs to the bore a hole (hole enlargement extension) maybe.Because apparatus arrangement compact conformation, in the process that this hole enlargement is extended, do not need hollow hollow forging is aborning taked to heat measure again, after first, second and third time perforation, the most hollow hollow forging of idealized effect can be obtained, production process can be entered down one more as required then.Certainly, these three punches are to be configured in side by side on the steel pipe's production streamline simultaneously.
Further, if punch possesses suitable technological parameter and can guarantee under the prerequisite of piercing temperature, two or three steps above on a punch, also finishing so.
Further again, appropriate as long as the setting of perforating apparatus and technology are equipped with on basis of the present invention, can carry out fourth, fifth perforation fully, with the seamless steel pipe of production larger diameter.
Compared with prior art, the advantage after the invention process is: the seamless steel pipe that can produce big format diameter with the pipe of same format diameter; Perhaps use the pipe of less format diameter, after extending, can produce the seamless steel pipe of big format diameter through one, two, three perforation hole enlargement.It is simple to have production equipment, technological process is short, and equipment investment is few, and production cost is low, with producing the steel pipe of many descriptions scope, be specially adapted to production than the various steel pipes of the steel pipe of major diameter, thin-walled and small lot, many kinds, special requirement with a kind of raw material.
It is to be noted that especially secondary wherein (three times) hole enlargement subtracts wall technology and is specially adapted to need to utilize the occasion of coming the seamless steel pipe of production larger caliber than the pipe of minor diameter.
Description of drawings
Fig. 1 is a seamless steel tube production process chart of the present invention;
Fig. 2 is the equipment plane arrangement structure schematic diagram of heating furnace and three piercing processes;
Fig. 3 is the partial enlarged drawing of Fig. 2 middle punch process portion.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described.
A kind of repeatedly (two, three times) perforation production technology comprises following processing step:
The first step, the suitable solid pipe of temperature that comes out from heating of pipe blank stove (11) lining, be transported to the foreground (13) of 1# punch via rollgang (12) after, feeding device pulls out pipe in the blow tank (14), startup steel-pushing apparatus (15) pushes 1# punch (16) to pipe and bores a hole, solid pipe has become hollow hollow forging, and hollow hollow forging can be routed up to subsequent processing by turning over pipe unit;
Second step, the hollow hollow forging of coming from the 1# punch, through the front turn over pipe unit after, behind the 2# punch foreground (23), again by turning over after pipe unit pulls out spiral lifting cross roll road (24) to hollow hollow forging, enter punch (26) and carry out the perforation second time (according to technological requirement, can hole enlargement subtract wall, isometrically subtract wall, tube reducing subtracts wall), become the hollow hollow forging that has certain requirements, pin-lift arrangement retreats, open the roller of embracing of centering roller, hollow hollow forging can be routed up to subsequent processing by turning over pipe unit;
The 3rd step, from the 2# punch come in the hollow hollow forging that comes out, after after turning over pipe unit, arriving 3# punch foreground (33), by turning over after pipe unit pulls out spiral lifting cross roll road (34) to hollow hollow forging, enter punch (36) and bore a hole for the third time (, can hole enlargement subtract wall, isometrically subtract wall, tube reducing subtracts wall) according to technological requirement, become the hollow hollow forging that meets the requirements, pin-lift arrangement retreats, and opens the roller of embracing of centering roller, and hollow hollow forging can be routed up by turning over pipe unit.
Because the apparatus arrangement compactness in whole perforation procedure, does not need hollow hollow forging is heated again, via the hollow hollow forging after secondary or three perforation, the processing that can directly enter subsequent processing.
Provide 5 specifically to utilize the present invention to carry out the associated production technological parameter form (unit: mm) that piercing process is realized hole enlargement at last.
Table 1 carries out hot-puncturing process for utilizing ￠ 250 unit equipments to grade of steel 10#, 20#, and the hot rolling specification is 370*11.75.
Table 2 carries out hot-puncturing process for utilizing ￠ 250 unit equipments to grade of steel 14MnVNb, and the hot rolling specification is 370*9.5.
Table 3 carries out hot-puncturing process for utilizing ￠ 250 unit equipments to grade of steel 10#, 20#, and the hot rolling specification is 435*10.5.
Table 4 carries out hot-puncturing process for utilizing ￠ 350 unit equipments to grade of steel 10#, 20#, and the hot rolling specification is 575*21.
Table 5 carries out hot-puncturing process for utilizing ￠ 350 unit equipments to grade of steel 10#, 20#, and the hot rolling specification is 485*23.
Unit: mm
Table 1
Unit: mm
Table 2
Unit: mm
Table 3
Unit: mm
Table 4
Unit: mm
Table 5
Claims (3)
1. a seamless steel pipe hot-rolling multiple perforation production process method comprises following step,
The first step: solid pipe cuts off blanking;
Second step: heating furnace heating;
The 3rd step: perforation process;
The 4th step: tube rolling, reheating furnace heating reach and decide tube reducing operation or cold rolling, normalizing operation;
The 5th step: finished product aligning;
The 6th step: automatic Pipe Cutting and subsequent treatment;
It is characterized in that described perforation process comprises secondary or the above perforation of secondary production process.
2. seamless steel pipe hot-rolling multiple perforation production process method according to claim 1 is characterized in that the above perforation of described secondary or secondary production process may further comprise the steps,
The first step: the suitable solid pipe of temperature that comes out from heating of pipe blank stove (11) lining, be transported to the foreground (13) of first punch (16) via rollgang (12) after, feeding device pulls out pipe in the blow tank (14), startup steel-pushing apparatus (15) pushes first punch (16) to pipe and bores a hole, solid pipe has become hollow hollow forging, and hollow hollow forging can be routed up to subsequent processing by turning over pipe unit;
Second step: the hollow hollow forging of coming from previous step, through the front turn over pipe unit after, to follow-up punch foreground, by turning over pipe unit hollow hollow forging is pulled out into spiral lifting cross roll road again, the punch that enters the back is bored a hole once more, becomes the hollow hollow forging that has certain requirements, and pin-lift arrangement retreats, open the roller of embracing of centering roller, hollow hollow forging can be routed up by turning over pipe unit;
The 3rd step: can repeat the processing step in above-mentioned second step according to actual needs, reach the parameter that needs until hollow hollow forging.
3. seamless steel pipe hot-rolling multiple perforation production process method according to claim 2 is characterized in that in the described perforation step before entering perforation next time carrying out hollow hollow forging according to technological requirement that hole enlargement subtracts wall, isometrically subtracts wall, tube reducing subtracts technologies such as wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010225484 CN101927260A (en) | 2010-07-13 | 2010-07-13 | Seamless steel pipe hot-rolling multiple perforation production process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010225484 CN101927260A (en) | 2010-07-13 | 2010-07-13 | Seamless steel pipe hot-rolling multiple perforation production process |
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| CN101927260A true CN101927260A (en) | 2010-12-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105478478A (en) * | 2015-11-19 | 2016-04-13 | 扬州诚德钢管有限公司 | Process for forming large-diameter seamless thick-wall and extra-strong steel pipes |
| CN110711779A (en) * | 2019-10-26 | 2020-01-21 | 鑫鹏源智能装备集团有限公司 | Control method for wall thickness of seamless steel tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144352A (en) * | 1983-08-02 | 1985-03-06 | White Consolidated Ind Inc | Seamless tube mill |
| CN1442244A (en) * | 2003-04-01 | 2003-09-17 | 江苏诚德钢管股份有限公司 | Reciprocating rolling process of seamless steel pipe |
| EP1361003A2 (en) * | 2002-04-18 | 2003-11-12 | Sumitomo Metal Industries, Ltd. | Method for manufacuturing seamless steel tube |
| CN201334226Y (en) * | 2008-12-19 | 2009-10-28 | 鞍钢集团设计研究院 | Tube blank delivery mechanism |
-
2010
- 2010-07-13 CN CN 201010225484 patent/CN101927260A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144352A (en) * | 1983-08-02 | 1985-03-06 | White Consolidated Ind Inc | Seamless tube mill |
| EP1361003A2 (en) * | 2002-04-18 | 2003-11-12 | Sumitomo Metal Industries, Ltd. | Method for manufacuturing seamless steel tube |
| CN1442244A (en) * | 2003-04-01 | 2003-09-17 | 江苏诚德钢管股份有限公司 | Reciprocating rolling process of seamless steel pipe |
| CN201334226Y (en) * | 2008-12-19 | 2009-10-28 | 鞍钢集团设计研究院 | Tube blank delivery mechanism |
Non-Patent Citations (2)
| Title |
|---|
| 《重型机械》 19990425 徐素文 phi160mm三辊铝管二次穿孔机组的研制 8-12 2-3 , 第4期 2 * |
| 《钢管》 20050228 邱永泰 自动轧管机的发展进程--纪念曼内斯曼兄弟发明斜轧穿孔机 51-54 1-3 第34卷, 第1期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105478478A (en) * | 2015-11-19 | 2016-04-13 | 扬州诚德钢管有限公司 | Process for forming large-diameter seamless thick-wall and extra-strong steel pipes |
| CN110711779A (en) * | 2019-10-26 | 2020-01-21 | 鑫鹏源智能装备集团有限公司 | Control method for wall thickness of seamless steel tube |
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