CN103894430B - A kind of jet descaling device for removing inner wall of metal tube firecoat and method - Google Patents
A kind of jet descaling device for removing inner wall of metal tube firecoat and method Download PDFInfo
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- CN103894430B CN103894430B CN201410127595.7A CN201410127595A CN103894430B CN 103894430 B CN103894430 B CN 103894430B CN 201410127595 A CN201410127595 A CN 201410127595A CN 103894430 B CN103894430 B CN 103894430B
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Abstract
For removing jet descaling device and the method for inner wall of metal tube firecoat, it comprises, a support bar, arranges along central axis in metal tube; At least two nozzle units, arrange before and after support bar length direction, each nozzle unit establishes at least two mixing jet nozzles, arrange along support bar even circumferential in the mode that support bar axis is dispersed to surrounding for the center of circle, the setting and the mixing jet nozzle of the nozzle unit of front and back setting staggers before and after circumferencial direction, form a mixing jet nozzle matrix, becoming can the effective de-scaling district of closed circle of covering metal inside pipe wall periphery.Jet descaling device of the present invention carries out continuous, efficient, stable green de-scaling to metal pipe material inner wall surface.
Description
Technical field
The invention belongs to jet technique of scale removal, particularly a kind of jet descaling device for removing inner wall of metal tube firecoat and method.
Background technology
Metal material can form the fine and close covering that one deck is made up of metal oxide in hot rolling or heat treatment process on surface, be commonly called as " firecoat ", the existence of this firecoat can impact processing process further: on the one hand the surface crack of material is not easily found in advance, thus make the finished product processed there are quality problems; Another aspect is easy is pressed into metal surface by firecoat, causes surface quality problems; In addition, the existence of hard oxide, can accelerate the wearing and tearing of roll or drawbench, bring difficulty simultaneously for the preservative treatment before actual use of this bar; In addition, for extraordinary rod iron, for exposing the surface quality defect of rod iron, as crackle, striped etc., all needing surperficial firecoat is removed and exposes human body, so just can be convenient to direct labor and find its defect place, and formulate corresponding remedial measure.
Based on this, metal pipe material, after completing hot-roll forming and after entering before PROCESS FOR TREATMENT, all needs thoroughly to remove its surperficial firecoat.
The surperficial de-scaling mode of metal pipe material, in view of the maturity of cost and production technology, the processing mode that current manufacturing enterprise both at home and abroad all adopts wet chemical to carry out cleaning is to remove surperficial firecoat, for tubing, it has two kinds of modes to carry out de-scaling usually, and one is the physics such as ball blast, shot-peening de-scaling mode, and another kind is wet chemical, namely adopt the modes such as strongly acidic solution such as sulfuric acid, hydrochloric acid and hydrofluoric acid, realize the removing to its surperficial firecoat.
Wet chemical acid cleaning process in these methods, its production environment is severe, and a large amount of residual acid produced because of producing must carry out circular regeneration process, current calculation regeneration technology also certainly leads to corresponding toxic emission, containing a large amount of acidity, corrosive elements in the waste gas of its discharge, as HCL, SO
2deng, direct atmosphere pollution.
And if employing shot-peening or ball blast mode carry out de-scaling, usually due to the inner surface limited space of tubing, shot-peening or ball blast mode need larger operating space usually, therefore this descaling process result be not only cause tube surfaces to clean out completely while, also bring a large amount of dust pollutions, cause the working environment in explained hereafter workshop equally very severe, and poor effect, the inner wall surface quality required by subsequent technique cannot be reached.
Based on this, for solving the surperficial de-scaling problem of tubing, researcher has carried out large quantifier elimination, have developed multiple technologies and equipment, to substitute the firecoat that this chemical method removes metal surface, as the descaling method that electrolysis de-scaling, the de-scaling of electrolysis grinding, electric discharge de-scaling, electron beam de-scaling, laser de-scaling, grinding de-scaling, alternating bending de-scaling and above-mentioned distinct methods combine.These methods are in evolution these years, and wherein high-pressure water jet technique of scale removal is with fastest developing speed, and its process of industrialization is also obvious all the more.
By consulting Patents, also external especially Japan is found, the metallurgical technology developed countries such as Germany, although it proposes numerous solid jets, polish-brush technique of scale removal such as Japan Patent JP06108277A discloses the descaling process adopting spray acid to combinationally use with brush roll on continuous cold rolling line, Japan Patent JP55034688A discloses a kind of associating PV rolling scale breading-compound abrasive high-pressure spray de-scaling mode, Japan Patent JP57142710A, JP57068217A, JP59097711A, and Canadian TMW company discloses a series of clearance technique for surface of steel plate firecoat after calendar year 2001, as US Patent No. 20080108281 (A1), US20080182486 (A1) and US20090227184 (A1) etc., US Patent No. 5388602 in addition, Japan Patent JP05092231A, JP09085329A and JP2002102915 etc. all do not propose one and effectively process rod, the technology of the surperficial firecoat removing of wire rod.
Summary of the invention
The object of this invention is to provide a kind of jet descaling device for removing inner wall of metal tube firecoat and method, realizing carrying out continuous, efficient, stable green de-scaling to metal pipe material inner wall surface.
For achieving the above object, technical scheme of the present invention is:
For removing a jet descaling device for inner wall of metal tube firecoat, it comprises, a support bar, arranges along central axis in metal tube; At least two nozzle units, arrange before and after support bar length direction, each nozzle unit establishes at least two mixing jet nozzles, arrange along support bar even circumferential in the mode that support bar axis is dispersed to surrounding for the center of circle, and, before and after the mixing jet nozzle of nozzle unit that arranges to stagger before and after circumferencial direction settings, form a mixing jet nozzle matrix, one-tenth can the effective de-scaling district of closed circle of covering metal inside pipe wall periphery.
Further, the angle of dispersing angle between the mixing jet nozzle in described nozzle unit is 5 ° ~ 180 °.
Again, described mixing jet nozzle shaft to support bar central axis at angle.
The present invention's jet descaling method of described jet descaling device, is characterized in that, the support bar of band nozzle unit is put into metal tube, and relative motion between metal tube, and this relative motion is linear relative movement or opposed helical motion; Wherein, linear relative movement is the relative uniform motion along metal tube central axis, or wherein a side keeps static, and the opposing party moves; Speed of related movement level remains on 5m/min ~ 100m/min; If opposed helical motion, be then be attached with relative rotary motion existing horizontal linear relative movement while, this uniform speed rotation can be that a side of nozzle unit or metal tube is rotated; Also can be both rotate, but rotation direction is contrary, but the final relative linear velocity value that helix transforms be 5m/min ~ 100m/min.
Further, maintain certain inclination angle between the central axis of described metal tube and horizontal plane, this inclination angle value is 1 ° ~ 45 ° levels; The central axis of metal tube and the angle of horizontal plane are vertical.
Again, central axis and the metal tube central axis coaxial of described support bar are arranged, or the central axis of support bar and metal tube centerline axis parallel.
Advantage of the present invention is as follows:
The present invention realizes the inwall de-scaling of cold conditions tubing by the mode of mixing jet, relatively traditional descaling process, possess environmental protection more, green descaling process, and production cost possesses stronger competitive advantage;
The present invention adopts the simple straight relative motion mode of special arrangement of nozzles mode and pipe material inner wall, can realize even, the stable scale removal effect of inwall, reaches efficient de-scaling target.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the B-B sectional view of Fig. 1.
Fig. 5 is the C-C sectional view of Fig. 1.
Detailed description of the invention
See Fig. 1 ~ Fig. 5, a kind of jet descaling device for removing inner wall of metal tube firecoat of the present invention, it comprises, a support bar 1, arranges along central axis in metal tube 100; Three nozzle units 2,2 ', 2 "; arrange before and after support bar 1 length direction; each nozzle unit 2(nozzle unit 2 is example; lower same) establish two mixing jet nozzles 21,22; arrange along support bar 1 even circumferential in the mode that support bar 1 axis is dispersed to surrounding for the center of circle; and, before and after the nozzle unit 2,2 ', 2 that arranges " mixing jet nozzle to stagger before and after circumferencial direction settings; form a mixing jet nozzle matrix, one-tenth can the effective de-scaling district of closed circle of covering metal inside pipe wall periphery.
Further, the angle of dispersing angle between the mixing jet nozzle 21,22 in described nozzle unit 2 is 5 ° ~ 180 °.Described mixing jet nozzle 21,22 axis and support bar central axis are at angle.
The present invention's jet descaling method of described jet descaling device, is characterized in that, the support bar 1 of band nozzle unit 2 is put into metal tube 100, and relative motion between metal tube 100, and this relative motion is linear relative movement or opposed helical motion; Wherein, linear relative movement is the relative uniform motion along metal tube central axis, or wherein a side keeps static, and the opposing party moves; Speed of related movement level remains on 5m/min ~ 100m/min; If opposed helical motion, be then be attached with relative rotary motion existing horizontal linear relative movement while, this uniform speed rotation can be that a side of nozzle unit 2 or metal tube 100 is rotated; Also can be both rotate, but rotation direction is contrary, but the final relative linear velocity value that helix transforms be 5m/min ~ 100m/min.
Further, maintain certain inclination angle between the central axis of described metal tube 100 and horizontal plane, this inclination angle value is 1 ° ~ 45 ° levels; The central axis of metal tube 100 and the angle of horizontal plane are vertical.
Again, central axis and metal tube 100 central axis coaxial of described support bar 1 are arranged, or the central axis of support bar 1 and metal tube 100 centerline axis parallel.
Inner wall surface de-scaling for cold conditions steel tubing:
Metal tube 100(cold conditions steel tubing) be delivered to and be furnished with multiple nozzle unit 2, 2 ', 2 " the mixing jet de-scaling region formed, this nozzle unit 2, 2 ', 2 " 8 mixing jet nozzles are all comprised in each unit, mixing jet nozzle model is completely the same, and all mixing jet nozzles 1 are 60mm with the vertical jet length of tubing inner circumferential surface, each nozzle unit 2 simultaneously, 2 ', 2 " mixing jet nozzle being circumferentially evenly arranged in divergent shape along tubing circular cross section in, same nozzle unit 2, 2 ', 2 " it is 45 ° along section error angle angle value circumferentially between every two the mixing jet nozzles in, i.e. three nozzle units 2, 2 ', 2 " during overlap, by known three nozzle units 2 of overlapping direction view, 2 ', 2 " the error angle angle value along section circumferencial direction between every two the adjacent mixing jet nozzles after overlap is 15 °.
So, the hollow steel pipe of tubing model to be internal diameter be 600mm, when tubing 4 with horizontal velocity 10m/min in the axial direction flat motion time, and all nozzle units all carry out spraying and keeping transfixion with pressure 50Mpa, so, when pipe material inner wall is completely by after all nozzle units, then namely pipe material inner wall achieves firecoat and removes completely.
The present invention makes full use of the cross section property of mixing jet scale removal effect and tubing, realizes the continuous high-speed de-scaling to tubing by the mode of this high-pressure spray.Because technology that this patent adopts is ripe, can implement, apply feasible.
Claims (6)
1., for removing a jet descaling device for inner wall of metal tube firecoat, it is characterized in that, comprise,
One support bar, is arranged along central axis in metal tube;
At least two nozzle units, arrange before and after support bar length direction, each nozzle unit establishes at least two mixing jet nozzles, arrange along support bar even circumferential in the mode that support bar axis is dispersed to surrounding for the center of circle, and, before and after the mixing jet nozzle of nozzle unit that arranges to stagger before and after circumferencial direction setting, form a mixing jet nozzle matrix, can the effective de-scaling district of closed circle of covering metal inside pipe wall periphery.
2. as claimed in claim 1 for removing the jet descaling device of inner wall of metal tube firecoat, it is characterized in that, the angle of dispersing angle between the mixing jet nozzle in described nozzle unit is 5 ° ~ 180 °.
3. as claimed in claim 1 or 2 for removing the jet descaling device of inner wall of metal tube firecoat, it is characterized in that, described mixing jet nozzle-axis and support bar central axis at angle, between this angle value scope 45 ° ~ 135 °.
4. with a jet descaling method for jet descaling device as claimed in claim 1, it is characterized in that, the support bar of band nozzle unit is put into metal tube, and relative motion between metal tube, this relative motion is linear relative movement or opposed helical motion; Wherein, linear relative movement is the relative uniform motion along metal tube central axis, or wherein a side keeps static, and the opposing party moves; Speed of related movement level remains on 5m/min ~ 100m/min; If opposed helical motion, be then be attached with relative uniform speed rotation existing horizontal linear relative movement while, this uniform speed rotation can be that a side of nozzle unit or metal tube is rotated; Also can be both rotate, but rotation direction is contrary, but the final relative linear velocity value that helix transforms be 5m/min ~ 100m/min.
5. jet descaling method as claimed in claim 4, it is characterized in that, maintain certain angle of inclination between the central axis of described metal tube and horizontal plane, this inclination angle value is at 1 ° ~ 45 °; Or the central axis of metal tube is vertical with the angle of horizontal plane.
6. jet descaling method as claimed in claim 4, it is characterized in that, central axis and the metal tube central axis coaxial of described support bar are arranged, or the central axis of support bar and metal tube centerline axis parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410127595.7A CN103894430B (en) | 2014-03-31 | 2014-03-31 | A kind of jet descaling device for removing inner wall of metal tube firecoat and method |
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| CN201410127595.7A CN103894430B (en) | 2014-03-31 | 2014-03-31 | A kind of jet descaling device for removing inner wall of metal tube firecoat and method |
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| CN103894430B true CN103894430B (en) | 2016-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108421836A (en) * | 2018-04-09 | 2018-08-21 | 新疆八钢铁股份有限公司 | shaped steel descaling device |
| CN115463997A (en) * | 2022-08-25 | 2022-12-13 | 鑫鹏源智能装备集团有限公司 | Titanium alloy hot-rolled seamless tube production system and production process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19805377A1 (en) * | 1998-02-11 | 1999-08-12 | Schloemann Siemag Ag | Spray beam for hydraulic de-scaling plant |
| CN201244599Y (en) * | 2008-06-23 | 2009-05-27 | 成都西南水泵厂 | Device for descaling steel tube |
| CN201841167U (en) * | 2010-10-11 | 2011-05-25 | 武汉钢铁(集团)公司 | High-pressure water descaling device for surfaces of steel billets |
| CN102284524A (en) * | 2011-08-08 | 2011-12-21 | 芜湖新兴铸管有限责任公司 | Device for descaling by high-pressure water |
| CN102764778A (en) * | 2012-06-28 | 2012-11-07 | 宝山钢铁股份有限公司 | Inner surface and outer surface jet flow descaling system and method for big-diameter metal pipe wall |
-
2014
- 2014-03-31 CN CN201410127595.7A patent/CN103894430B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19805377A1 (en) * | 1998-02-11 | 1999-08-12 | Schloemann Siemag Ag | Spray beam for hydraulic de-scaling plant |
| CN201244599Y (en) * | 2008-06-23 | 2009-05-27 | 成都西南水泵厂 | Device for descaling steel tube |
| CN201841167U (en) * | 2010-10-11 | 2011-05-25 | 武汉钢铁(集团)公司 | High-pressure water descaling device for surfaces of steel billets |
| CN102284524A (en) * | 2011-08-08 | 2011-12-21 | 芜湖新兴铸管有限责任公司 | Device for descaling by high-pressure water |
| CN102764778A (en) * | 2012-06-28 | 2012-11-07 | 宝山钢铁股份有限公司 | Inner surface and outer surface jet flow descaling system and method for big-diameter metal pipe wall |
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