CN105964696A - Tandem rolling method for pre-straightening of tail of steel tube and special device - Google Patents
Tandem rolling method for pre-straightening of tail of steel tube and special device Download PDFInfo
- Publication number
- CN105964696A CN105964696A CN201610475563.5A CN201610475563A CN105964696A CN 105964696 A CN105964696 A CN 105964696A CN 201610475563 A CN201610475563 A CN 201610475563A CN 105964696 A CN105964696 A CN 105964696A
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- Prior art keywords
- straightening plate
- steel pipe
- straightening
- steel tube
- plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a tandem rolling method for pre-straightening of the tail of a steel tube. A technological process of the tandem rolling method comprises five rolling procedures including heating, perforation, tube rolling, tube extracting and sizing. The tandem rolling method is characterized in that a steel tube pre-straightening device is arranged at a frame inlet of a tube extracting machine of a tube extracting technology, and comprises an upper straightening plate (1) and a lower straightening plate (2), wherein guide sliding ways are respectively arranged on the side surfaces of the upper straightening plate (1) and the lower straightening plate (2); the upper straightening plate (1) and the lower straightening plate (2) are controlled by two transmission elements; the working surface of each of the upper straightening plate (1) and the lower straightening plate (2) is a semi-circular surface; and the upper straightening plate (1) and the lower straightening plate (2) are combined together to form a whole circular hole channel. By the steel tube pre-straightening device, the problem of the concave-surface-shaped defect of the tail of the steel tube can be solved effectively, the surface of the steel tube cannot deform locally, and therefore, the quality of the product and the yield of the steel tube are improved. The device is simple in structure and convenient to use.
Description
Technical field:
The present invention relates to the continuous rolling technology field in seamless steel tube production, the method for tandem rolling of a kind of steel pipe afterbody de-distortion and special purpose device.
Background technology:
Tandem rolling is a kind of important process method in seamless steel tube production, and its technical process includes heating, perforation, tube rolling, de-pipe, five rolling process of sizing, is undertaken by heating furnace, perforating machine, tandem mill, winding arbor extraction press, five main frames of sizing mill respectively；The effect of heating furnace is by the temperature range of heating of pipe blank to suitable deformation；The effect of perforating machine is that solid pipe is made hollow hollow billet；The effect of tandem mill is to roll hollow hollow billet, it is achieved subtracts the purpose that wall extends, it is characterized in that steel duct has a plug；The effect of winding arbor extraction press is to be deviate from from plug by steel pipe；The effect of sizing mill is that steel pipe carries out rule circle, it is ensured that qualified outer-diameter accuracy.In the steel pipe that the rolling technique is produced, the afterbody certain point of steel pipe is often with a certain degree of concave shape, and this concave surface cannot be aligned by straightener, can only cut away, thus causes the decline of Tube yield.
The principle producing drawbacks described above is as follows: in above-mentioned production technology, the hollow hollow billet that perforating machine passes, due to reasons such as the adjustment of heating furnace heating technique parameter, perforating machine technical arrangement plan, wall thickness inclined wall problem is there is at afterbody, after being rolled by tandem mill, steel pipe afterbody presents shape of a hoof warpage shape；Winding arbor extraction press is made up of three frames along steel pipe direction of advance, and each frame is formed closed type by the roll of three actives, and the distance between each frame is L；Afterbody passes sequentially through three frames of winding arbor extraction press with the steel pipe of shape of a hoof warpage shape, steel pipe afterbody is smoothed out with the fingers directly by roll in winding arbor extraction press frame, and during steel pipe afterbody is smoothed out with the fingers directly, steel pipe afterbody is at tail end distance L, the offside point of warped surface, steel tube surface is locally deformed with, in concave shape.
The measures such as the measure of elimination drawbacks described above is currently mainly by strengthening the accurate adjustment of heating furnace heating technique and perforating machine piercing process parameter, it is ensured that the Quality of Tail of hollow billet, the wall thickness accuracy of raising hollow billet afterbody, eliminate or alleviate steel pipe trailing concave shape defect.But, in limit light-wall pipe production process, drawbacks described above the most easily occurs.
Summary of the invention:
It is an object of the invention to overcome the deficiency of above-mentioned prior art, and the method for tandem rolling of a kind of steel pipe afterbody de-distortion is provided.
It is a further object of the present invention to provide the special purpose device of the method for tandem rolling realizing steel pipe afterbody de-distortion.
The problem that present invention mainly solves the steel pipe trailing concave shape defect that existing technique exists.
The technical scheme is that the method for tandem rolling of a kind of steel pipe afterbody de-distortion, its technological process includes heating, perforation, tube rolling, de-pipe, five rolling process of sizing, it is characterized in that, the pre-device of straightening of a set of steel pipe is set in the frame porch of the winding arbor extraction press of de-plumber's skill, this device is made up of upper straightening plate and lower straightening plate, the side of straightening plate is respectively equipped with guide slide up and down, and upper and lower straightening plate is controlled by two transmission original papers；The work surface of straightening plate is a semi circular surface up and down, and upper and lower straightening plate is combined one full-round hole passage of formation.
Realizing the special purpose device of the method for tandem rolling of steel pipe afterbody de-distortion, it is characterized in that, this device includes straightening plate and lower straightening plate, and the side of upper and lower straightening plate is respectively equipped with guide slide, and guide slide matches with the slide on slide plate respectively；Straightening plate is controlled by two transmission original papers up and down；The work surface of straightening plate is a semi circular surface up and down, and upper and lower straightening plate is combined one full-round hole passage of formation.
Compared with the prior art method for tandem rolling and the special purpose device of a kind of steel pipe afterbody de-distortion of the present invention have prominent substantive distinguishing features and marked improvement, use the pre-device of straightening of a set of steel pipe, the problem that can efficiently solve steel pipe trailing concave shape defect, make steel tube surface to be locally deformed with, thus improve product quality and Tube yield；Its simple in construction, easy to use.
Accompanying drawing illustrates:
Fig. 1 is the main TV structure schematic diagram of the pre-device of straightening of invention；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is the fundamental diagram before steel pipe enters pre-device of straightening；
Fig. 5 is the fundamental diagram that steel pipe head and middle part enter pre-device of straightening；
Fig. 6 is the fundamental diagram that steel pipe afterbody enters pre-device of straightening；
Fig. 7 is the fundamental diagram that steel pipe afterbody leaves pre-device of straightening.
Detailed description of the invention:
In order to be more fully understood that and implement, describe the present invention in detail below in conjunction with providing specific embodiment to figure；Illustrated embodiment is only used for explaining the present invention, is not intended to limit the scope of the present invention.
Embodiment 1, sees Fig. 1,2,3, needs to be processed into upper straightening plate 1 and lower straightening plate 2 according to design, is respectively equipped with guide slide in the side of straightening plate 1 and lower straightening plate 2, and guide slide matches with the slide on slide plate respectively；The top of upper straightening plate 1 is provided with and the connecting portion of transmission original paper such as hydraulic cylinder, and by hydraulic cylinder control；The bottom of lower straightening plate 2 is provided with and the connecting portion of transmission original paper such as hydraulic cylinder, and by hydraulic cylinder control；The work surface of upper and lower straightening plate 1,2 is processed into semi circular surface, and the two is combined one full-round hole passage of formation, forms the pre-device of straightening of steel pipe of the present invention.
During use, see Fig. 4,5,6,7, pre-for above-mentioned steel pipe device of straightening is arranged on the frame porch of the winding arbor extraction press of de-plumber's skill；The tandem rolling of steel pipe uses the heating of routine, perforation, tube rolling work, de-pipe, five rolling process of sizing, when head and the middle part of steel pipe 3 are in open mode through the pre-device of straightening of steel pipe, straightening plate 1 and straightening plate 2, and straightening plate 1 does not contacts with steel pipe 3 with straightening plate 2；When steel pipe 3 afterbody device of straightening pre-close to steel pipe soon, straightening plate 1 and straightening plate 2 close, and two pieces of straightening plates form a circular hole passage, and steel pipe 3 afterbody is through circular hole passage, and steel pipe 3 afterbody is able to shaping and aligns；Steel pipe tail end shape of a hoof warpage shape after shaping aligning disappears, then through winding arbor extraction press, steel tube surface will not be locally deformed with, and will not form concave shape defect.
In like manner, for realizing the method for tandem rolling of the steel pipe afterbody de-distortion of the present invention, the shape of upper and lower straightening plate and control mode also can be taked other scheme, belong to scope together.
Claims (2)
1. the method for tandem rolling of a steel pipe afterbody de-distortion, its technological process includes heating, perforation, tube rolling, de-pipe, five rolling process of sizing, it is characterized in that, the pre-device of straightening of a set of steel pipe is set in the frame porch of the winding arbor extraction press of de-plumber's skill, this device is made up of upper straightening plate (1) and lower straightening plate (2), the side of straightening plate (1,2) is respectively equipped with guide slide up and down, and upper and lower straightening plate (1,2) is controlled by two transmission original papers；The work surface of straightening plate (1,2) is a semi circular surface up and down, and upper and lower straightening plate (1,2) is combined one full-round hole passage of formation.
2. realize the special purpose device of the method for tandem rolling of the steel pipe afterbody de-distortion of claim 1, it is characterized in that, this device includes that straightening plate (1) and lower straightening plate (2), the side of upper and lower straightening plate (1,2) are respectively equipped with guide slide, and guide slide matches with the slide on slide plate respectively；Straightening plate (1,2) is controlled by two transmission original papers up and down；The work surface of straightening plate (1,2) is a semi circular surface up and down, and upper and lower straightening plate (1,2) is combined one full-round hole passage of formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610475563.5A CN105964696A (en) | 2016-06-27 | 2016-06-27 | Tandem rolling method for pre-straightening of tail of steel tube and special device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610475563.5A CN105964696A (en) | 2016-06-27 | 2016-06-27 | Tandem rolling method for pre-straightening of tail of steel tube and special device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105964696A true CN105964696A (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610475563.5A Pending CN105964696A (en) | 2016-06-27 | 2016-06-27 | Tandem rolling method for pre-straightening of tail of steel tube and special device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190443A (en) * | 2006-11-30 | 2008-06-04 | 江苏宏宝集团有限公司 | Method for manufacturing super-long titanium or titanium alloy tube |
| US20100212387A1 (en) * | 2008-08-25 | 2010-08-26 | Walter Hoeffgen | Method for producing a seamless steel pipe and rolling mill for performing the method |
| JP2013099780A (en) * | 2011-10-12 | 2013-05-23 | Jfe Steel Corp | METHOD FOR PRODUCING HIGH-Cr SEAMLESS STEEL TUBE |
| CN104475453A (en) * | 2014-12-13 | 2015-04-01 | 太原磬泓机电设备有限公司 | Process and device for rolling continuously rolled seamless steel tubes |
| CN204639603U (en) * | 2015-03-10 | 2015-09-16 | 天津杰锋钢管工贸有限公司 | A kind of steel pipe equipment for straightening |
| CN204892611U (en) * | 2015-07-07 | 2015-12-23 | 吴亚琪 | Device that bears of usefulness is aligned to steel pipe |
-
2016
- 2016-06-27 CN CN201610475563.5A patent/CN105964696A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190443A (en) * | 2006-11-30 | 2008-06-04 | 江苏宏宝集团有限公司 | Method for manufacturing super-long titanium or titanium alloy tube |
| US20100212387A1 (en) * | 2008-08-25 | 2010-08-26 | Walter Hoeffgen | Method for producing a seamless steel pipe and rolling mill for performing the method |
| JP2013099780A (en) * | 2011-10-12 | 2013-05-23 | Jfe Steel Corp | METHOD FOR PRODUCING HIGH-Cr SEAMLESS STEEL TUBE |
| CN104475453A (en) * | 2014-12-13 | 2015-04-01 | 太原磬泓机电设备有限公司 | Process and device for rolling continuously rolled seamless steel tubes |
| CN204639603U (en) * | 2015-03-10 | 2015-09-16 | 天津杰锋钢管工贸有限公司 | A kind of steel pipe equipment for straightening |
| CN204892611U (en) * | 2015-07-07 | 2015-12-23 | 吴亚琪 | Device that bears of usefulness is aligned to steel pipe |
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Application publication date: 20160928 |
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