CN202570891U - Four-roller squeezing roller set for high-frequency longitudinal welded pipe - Google Patents
Four-roller squeezing roller set for high-frequency longitudinal welded pipe Download PDFInfo
- Publication number
- CN202570891U CN202570891U CN 201220231691 CN201220231691U CN202570891U CN 202570891 U CN202570891 U CN 202570891U CN 201220231691 CN201220231691 CN 201220231691 CN 201220231691 U CN201220231691 U CN 201220231691U CN 202570891 U CN202570891 U CN 202570891U
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- roller
- pipe
- pressure roller
- radius
- inner arc
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Abstract
The utility model relates to a four-roller squeezing roller set for a high-frequency longitudinal welded pipe, comprising a pair of side pressing rollers symmetrically mounted left and right, and a pair of upper pressing rollers mounted side by side, wherein an upper pressing roller outer edge inner arc is machined on each upper pressing roller. The innovation points are as follows: the hole pattern radius of the upper pressing roller outer edge inner arc is larger than the radius of a finished pipe, and is R plus 2H (R represents the radius of the finished pipe, and H represents the thickness of the pipe wall). According to the four-roller squeezing roller set for the high-frequency longitudinal welded pipe, the structural design is scientific and reasonable, the edge closing state in the forming of a pipe blank is ideal, burrs inside the product are less, and the product quality is good, and the innovativeness is higher.
Description
Technical field
The utility model belongs to high-frequency straight seam welded pipe production equipment field, particularly in a kind of novel high-frequency ERW four roller compression roller groups.
Background technology
Four roller compression roller groups are high-frequency straight seam welded pipe production a kind of devices commonly used; The high-frequency straight seam welded pipe continuous production processes is: coiled strip steel launches through equipment after many rolling to plain-barreled roll and edger roll of pre-profiling, precisive shaped; Make band steel (also claiming pipe) be deformed into cylindric gradually from flat board; When getting into four rollers (or three rollers, five rollers) compression roller district, form angular aperture; When the pipe edge gets into contact condition, carry out high-frequency welding, and the pipe edge is the key of decision welded tube welding quality near state, and a pair of pressure roller outer rim inner arc PASS DESIGN that goes up is one of the key factor approaching in good condition at decision pipe edge.Four used in the past roller compression roller groups generally all adopt the production tube radius as last pressure roller outer rim inner arc pass radius, and the deficiency of this structure is:
1) this employing production tube radius is as the last pressure roller of last pressure roller outer rim inner arc pass radius; When band steel (also claiming pipe) is deformed into cylindric from flat board gradually; Getting into four roller compression roller districts formation angular aperture,, pipe (being cylindric) edge is " V " type when getting into contact condition, and this state makes magnetic field can not be uniformly distributed in pipe edge surfaces externally and internally; Reduced along the effective current of pipe edge outer surface, influenced welding quality.
2) this employing production tube radius is as the last pressure roller of last pressure roller outer rim inner arc pass radius, and pipe (being cylindric) edge is " V " type when getting into contact condition, and this state also can cause the increase of burr in the weld seam, increases the difficulty of burr in removing.
3) this employing production tube radius is as the last pressure roller of last pressure roller outer rim inner arc pass radius; When pipe is formed into the weld zone; Can think in theory the pipe edge near state for circular, but practical operation is difficult to accomplish, " sharp peach type " state usually occurs; Cause the withstand voltage flat performance of product pipe to reduce, product quality reduces.
In a word, this employing production tube radius is as the last pressure roller of last pressure roller outer rim inner arc pass radius, and it is not in place to exist pipe to be shaped, and the pipe edge is undesirable near state, and the interior burr of generation is many, deficiencies such as poor product quality.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art, the novel high-frequency ERW four roller compression roller groups of few, the good product quality of burr in edge, the product desirable near state when providing a kind of pipe to be shaped.
The utility model solves its technical problem and realizes through following technical scheme:
A kind of novel high-frequency ERW four roller compression roller groups; About comprising to a pair of side pressure roller, the last pressure roller of a pair of installation arranged side by side of dress; Be shaped on pressure roller outer rim inner arc on the last pressure roller, its innovation part is: the said pressure roller outer rim inner arc of going up, and its pass radius is greater than the production tube radius; Be R+2H (R is the production tube radius, and H is a thickness of pipe wall).
Advantage of the present invention and beneficial effect are:
1. this novel high-frequency ERW four roller compression roller groups; Make the pipe edge be " ▏ ▏ " shape (parallel) state by V-shaped becoming near state; Make magnetic field evenly concentrate on the weld metal zone surfaces externally and internally, mean allocation has improved welding quality along the effective current in " ▏ ▏ " shape district.
2. this novel high-frequency ERW four roller compression roller groups, burr height in reducing helps inner-burr cleaning, improves internal hair bayonet service life, reduces because of the tool changing stop frequency, enhances productivity.
3. this novel high-frequency ERW four roller compression roller groups, pipe is formed into pipe edge, weld zone and has eliminated " sharp peach type " state near state, improves the withstand voltage flat performance of steel pipe, helps improving welding quality.
4. this novel high-frequency ERW four roller compression roller group scientific structure design are reasonable; Having pipe advantage such as few, the good product quality of burr in edge, the product desirable near state when being shaped, is a kind of novel high-frequency ERW four roller compression roller groups that have than high innovation character.
Description of drawings
Fig. 1 is the utility model assembling sketch map;
Fig. 2 is last pressure roller cutaway view;
Fig. 3 is the left view of Fig. 3;
Fig. 4 is the new and old pressure roller duty comparison diagram of going up.
1,5-side pressure roller, 2, novel pressure roller duty, the former pressure roller duty that goes up of 8-of going up of the last pressure roller of 3-, 4-pipe, the last pressure roller outer rim of 6-inner arc, 7-.
The specific embodiment
Through specific embodiment the utility model is done further to detail below, following examples are descriptive, are not determinate, can not limit the protection domain of the utility model with this.
A kind of novel high-frequency ERW four roller compression roller groups; To a pair of side pressure roller 1,5 of dress, the last pressure roller 2,3 of a pair of installation arranged side by side, be shaped on pressure roller outer rim inner arc 6 on the last pressure roller about comprising, the said pressure roller outer rim inner arc of going up; Its pass radius is greater than the production tube radius; Be R+2H, R is the production tube radius, and H is a thickness of pipe wall.
The operation principle of the utility model is:
Carrying out high-frequency straight seam welded pipe when producing, coiled strip steel launches through equipment after many rolling to plain-barreled roll and edger roll of pre-profiling, precisive shaped make band steel (also claiming pipe) be deformed into cylindric gradually from the plane; When getting into four roller compression roller districts, form angular aperture; When pipe 4 edges get into contact condition, carry out high-frequency welding because pressure roller outer rim inner arc radius is slightly larger than original last pressure roller outer rim inner arc radius promptly greater than the production tube radius on the novel high-frequency ERW, thereby can make the pipe edge be " ▏ ▏ " shape parastate (shown among Fig. 4 7) near state has overcome the deficiency of V-shaped state (shown among Fig. 4 8); Make magnetic field evenly concentrate on the weld metal zone surfaces externally and internally; Mean allocation can effectively improve welding quality along the effective current in " ▏ ▏ " shape district, the generation of burr in reducing; Reduce the difficulty of deburring; Avoid the production tube cross section to be " sharp peach shape ", improve the withstand voltage flat performance of product, thereby improve the quality of products.
Claims (1)
1. novel high-frequency ERW four roller compression roller groups; To a pair of side pressure roller of dress, the last pressure roller of a pair of installation arranged side by side, be shaped on pressure roller outer rim inner arc on the last pressure roller about comprising, it is characterized in that: the said pressure roller outer rim inner arc of going up; Its pass radius is greater than the production tube radius; Be R+2H, R is the production tube radius, and H is a thickness of pipe wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220231691 CN202570891U (en) | 2012-05-22 | 2012-05-22 | Four-roller squeezing roller set for high-frequency longitudinal welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220231691 CN202570891U (en) | 2012-05-22 | 2012-05-22 | Four-roller squeezing roller set for high-frequency longitudinal welded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202570891U true CN202570891U (en) | 2012-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220231691 Expired - Lifetime CN202570891U (en) | 2012-05-22 | 2012-05-22 | Four-roller squeezing roller set for high-frequency longitudinal welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202570891U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433638A (en) * | 2013-08-12 | 2013-12-11 | 大连三高科技发展有限公司 | Band steel welding extrusion device for high frequency welding test bed |
| CN110711782A (en) * | 2018-07-14 | 2020-01-21 | 大连冶金工具厂有限公司 | Extrusion roller hole pattern of high-frequency welded pipe rolling mill |
| CN110877061A (en) * | 2019-08-14 | 2020-03-13 | 上海盛宝冶金科技有限公司 | Production unit of double-layer core-spun wire |
| CN110877060A (en) * | 2019-08-14 | 2020-03-13 | 上海盛宝冶金科技有限公司 | Production method of double-layer core wire |
-
2012
- 2012-05-22 CN CN 201220231691 patent/CN202570891U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433638A (en) * | 2013-08-12 | 2013-12-11 | 大连三高科技发展有限公司 | Band steel welding extrusion device for high frequency welding test bed |
| CN103433638B (en) * | 2013-08-12 | 2015-09-09 | 大连三高科技发展有限公司 | The band steel welding pressurizing unit of ratio-frequency welding testing stand |
| CN110711782A (en) * | 2018-07-14 | 2020-01-21 | 大连冶金工具厂有限公司 | Extrusion roller hole pattern of high-frequency welded pipe rolling mill |
| CN110877061A (en) * | 2019-08-14 | 2020-03-13 | 上海盛宝冶金科技有限公司 | Production unit of double-layer core-spun wire |
| CN110877060A (en) * | 2019-08-14 | 2020-03-13 | 上海盛宝冶金科技有限公司 | Production method of double-layer core wire |
| CN110877061B (en) * | 2019-08-14 | 2021-09-07 | 上海盛宝冶金科技有限公司 | Production unit of double-layer core-spun wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 301600 Haihe Road, Daegu Town, Jinghai District, Tianjin City, No. 6 Patentee after: Tianjin Boro industry and Trade Co., Ltd. Address before: 301600 Haihe Road, Daegu Town, Jinghai County, Tianjin City, No. 6 Patentee before: Tianjin Jinghai County Baolai Business & Industry Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |