EP0809545A1 - Roll pass design system for a pipe-reducing rolling mill - Google Patents
Roll pass design system for a pipe-reducing rolling millInfo
- Publication number
- EP0809545A1 EP0809545A1 EP96901717A EP96901717A EP0809545A1 EP 0809545 A1 EP0809545 A1 EP 0809545A1 EP 96901717 A EP96901717 A EP 96901717A EP 96901717 A EP96901717 A EP 96901717A EP 0809545 A1 EP0809545 A1 EP 0809545A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- pipe
- caliber
- roll
- flanks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title abstract description 6
- 239000000463 material Substances 0.000 abstract description 7
- 230000008719 thickening Effects 0.000 abstract description 5
- 239000004429 Calibre Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 244000309466 calf Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
Definitions
- the invention relates to a roll caliber for the roll sets, each consisting of three rolls, of a multi-stand mandrel-less tube-reducing roll mill, in which the concave caliber contours of the rolls on each side of the caliber
- corner or polygon formation can describe quadrangular and when using a three-roll caliber as a hexagonal cross-sectional shape with rounded edges
- the proposal of the invention has the advantage that the local bulge increases the local contact pressure in each frame, so that a thickening of material in the middle of the caliber flank is counteracted. In the event of polygon formation, the finished tube is therefore without application of the invention. this point in the wall thickness increased compared to the rest of the tube circumference.
- the proposed measures of the invention counteract this thickening According to a favorable proposal of the invention it is provided that the increase in the bulge corresponds to 1 to 5% of the tube wall thickness of the tubes to be rolled in the caliber
- Wall thickening leads If the vertex of the protrusion is shifted towards the caliber jump according to the proposals of the invention, ie the protrusion is arranged asymmetrically in the flank of the calf, this disruptive effect is compensated for
- FIG. 1 denotes the section from a roll of a roll set consisting of three rolls, the basic caliber 2 of which is shown concave or, in the present case, in the form of a circular arc, deviating from this basic caliber 2 and in In line with the teaching of German Patent 24 48 158, the two flank regions 4 of the basic calf 2 adjacent to the Ka 3 background are convexly curved, the size of the protrusion 5 being indicated by a.
- the vertex 6 of each protrusion 5 is at an angle ⁇ to the center of Kahber 7 and measured from Kahberground 3 and is 30 to 35 degrees
- the size of the protrusion a increases from the scaffold site i on the subsequent adjacent scaffold sites i + 1, i + 2, i + 3, i + 4, etc. by a constant or percentage-equal amount Mit i to i + n are the scaffolding places of a number of working scaffolds, of which a maximum of 12 are usefully provided with the increase in the size of the protrusion 5 according to the invention
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Control Of Metal Rolling (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19506858 | 1995-02-14 | ||
DE19506858A DE19506858C1 (en) | 1995-02-14 | 1995-02-14 | Roll pass design for 3-roll passes of mandrel-less tube reducing mills |
PCT/DE1996/000205 WO1996025249A1 (en) | 1995-02-14 | 1996-02-02 | Roll pass design system for a pipe-reducing rolling mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0809545A1 true EP0809545A1 (en) | 1997-12-03 |
EP0809545B1 EP0809545B1 (en) | 1999-04-14 |
Family
ID=7755188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96901717A Expired - Lifetime EP0809545B1 (en) | 1995-02-14 | 1996-02-02 | Roll pass design system for a pipe-reducing rolling mill |
Country Status (10)
Country | Link |
---|---|
US (1) | US5816092A (en) |
EP (1) | EP0809545B1 (en) |
CN (1) | CN1070394C (en) |
AT (1) | ATE178816T1 (en) |
CZ (1) | CZ286696B6 (en) |
DE (2) | DE19506858C1 (en) |
ES (1) | ES2129953T3 (en) |
RU (1) | RU2117540C1 (en) |
UA (1) | UA45991C2 (en) |
WO (1) | WO1996025249A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112007951A (en) * | 2019-05-31 | 2020-12-01 | 宝山钢铁股份有限公司 | Method for forming round pipe hole pattern of high-frequency straight welded pipe |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19758107A1 (en) * | 1997-12-17 | 1999-06-24 | Mannesmann Ag | Multi-stand mandrelless stretch-reducing mill |
US8166789B2 (en) * | 2004-01-21 | 2012-05-01 | Sumitomo Metal Industries, Ltd. | Pipe or tube reducing mill and roll for reducing mill |
WO2005092531A1 (en) * | 2004-03-29 | 2005-10-06 | Sumitomo Metal Industries, Ltd. | Tube manufacturing method and apparatus for fixed diameter rolling |
CN1695839B (en) * | 2004-08-17 | 2010-07-07 | 江苏包罗铜材集团股份有限公司 | Roller trio skew rolling method for cold perforating and cold chambering ingot |
JP4441912B2 (en) * | 2005-03-28 | 2010-03-31 | 住友金属工業株式会社 | Mandrel mill rolling method |
BRPI0810055B1 (en) * | 2007-02-08 | 2016-10-18 | Nippon Steel & Sumitomo Metal Corp | ribbed roller for a reducer and reducer |
AT507596B1 (en) * | 2008-11-20 | 2011-04-15 | Voestalpine Tubulars Gmbh & Co Kg | METHOD AND DEVICE FOR PRODUCING STEEL TUBES WITH SPECIAL CHARACTERISTICS |
JP5849895B2 (en) * | 2012-08-21 | 2016-02-03 | 新日鐵住金株式会社 | Drawing rolling device and roll for drawing rolling device |
CN104550263B (en) * | 2014-12-18 | 2017-05-10 | 天津商业大学 | Pass design method for producing seamless steel tubes by utilizing five-rack continuous rolling mill |
CN113996663B (en) * | 2021-12-31 | 2022-03-11 | 太原科技大学 | Method and system for distributing and correcting reducing rate of seamless pipe tension reducing process |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE342403C (en) * | 1919-09-06 | 1921-10-18 | Method of manufacturing unfired building materials | |
DE2333916C2 (en) * | 1973-07-04 | 1986-01-09 | Kocks Technik Gmbh & Co, 4010 Hilden | Calibration of the rolls of a reducing mill for tubes |
DE2448158C3 (en) * | 1974-10-07 | 1980-09-04 | Mannesmannroehren-Werke Ag, 4000 Duesseldorf | Roll calibration of a tube reducing mill aimed at reducing the formation of polygons inside the tube |
IT1078828B (en) * | 1975-06-25 | 1985-05-08 | Mannesmann Roehren Werke Ag | CALIBRATION OF A THREE-CYLINDER REDUCING ROLLER TO AVOID THE FORMATION OF POLYGONS INSIDE THE PIPES ON THE OCCASION OF THE REDUCING LAMINATION OF THE PIPES |
DE2753267C3 (en) * | 1977-11-30 | 1980-09-18 | Kocks Technik Gmbh & Co, 4000 Duesseldorf | Push bench for the production of pipe blanks |
SU1183211A1 (en) * | 1982-06-11 | 1985-10-07 | Uralsky Nii Trubnoj Promy | Operating tool for reducing mill |
SU1071335A1 (en) * | 1982-11-03 | 1984-02-07 | Уральский научно-исследовательский институт трубной промышленности | Special tool for reducing mill |
-
1995
- 1995-02-14 DE DE19506858A patent/DE19506858C1/en not_active Expired - Fee Related
-
1996
- 1996-02-02 US US08/913,115 patent/US5816092A/en not_active Expired - Lifetime
- 1996-02-02 CN CN96191923A patent/CN1070394C/en not_active Expired - Lifetime
- 1996-02-02 WO PCT/DE1996/000205 patent/WO1996025249A1/en active IP Right Grant
- 1996-02-02 DE DE59601666T patent/DE59601666D1/en not_active Expired - Lifetime
- 1996-02-02 EP EP96901717A patent/EP0809545B1/en not_active Expired - Lifetime
- 1996-02-02 AT AT96901717T patent/ATE178816T1/en active
- 1996-02-02 ES ES96901717T patent/ES2129953T3/en not_active Expired - Lifetime
- 1996-02-02 UA UA97063417A patent/UA45991C2/en unknown
- 1996-02-02 RU RU97115371A patent/RU2117540C1/en active
- 1996-02-02 CZ CZ19972447A patent/CZ286696B6/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9625249A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112007951A (en) * | 2019-05-31 | 2020-12-01 | 宝山钢铁股份有限公司 | Method for forming round pipe hole pattern of high-frequency straight welded pipe |
Also Published As
Publication number | Publication date |
---|---|
UA45991C2 (en) | 2002-05-15 |
DE19506858C1 (en) | 1996-01-18 |
DE59601666D1 (en) | 1999-05-20 |
CN1070394C (en) | 2001-09-05 |
US5816092A (en) | 1998-10-06 |
WO1996025249A1 (en) | 1996-08-22 |
ES2129953T3 (en) | 1999-06-16 |
ATE178816T1 (en) | 1999-04-15 |
CZ286696B6 (en) | 2000-06-14 |
CN1174527A (en) | 1998-02-25 |
RU2117540C1 (en) | 1998-08-20 |
EP0809545B1 (en) | 1999-04-14 |
CZ244797A3 (en) | 1997-11-12 |
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