CN102527718A - Molding process of semicircular plate for pile leg of oil drilling platform - Google Patents
Molding process of semicircular plate for pile leg of oil drilling platform Download PDFInfo
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- CN102527718A CN102527718A CN2010105932362A CN201010593236A CN102527718A CN 102527718 A CN102527718 A CN 102527718A CN 2010105932362 A CN2010105932362 A CN 2010105932362A CN 201010593236 A CN201010593236 A CN 201010593236A CN 102527718 A CN102527718 A CN 102527718A
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- semicircular plate
- rolling
- drilling platform
- oil drilling
- semicircular
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Abstract
The invention provides a molding process of a semicircular plate for pile leg of an oil drilling platform. The process comprises the following steps of: I, prefabricating a blank, heating to a temperature which is consistent with a rolling requirement, taking out, putting into a feeding groove of a forge rolling machine, and preparing for rolling; and II, arranging a mold on the forge rolling machine, arranging upper and lower molds onto upper and lower rollers of the forge rolling machine, engaging a high-temperature steel plate into the molds by adjusting the interval between the upper and lower molds, controlling the rotating speed of the forge rolling machine, and molding the semicircular plate by rolling twice, wherein the rolling reduction of primary rolling is 80-120 millimeters, the rolling reduction of secondary rolling is 50-80 millimeters, the maximum length of the rolled semicircular plate is up to 18 meters, the outer diameter is 200-400 millimeters, and the inner diameter is 50-200 millimeters; and the length of the processed semicircular plate is increased, the quantity of semicircular plates needed by a main board pipe for processing the pile leg is decreased, overall performance is improved, the welding procedure is shortened, and production cost is reduced.
Description
Technical field
The present invention relates to a kind of moulding process of used for oil drilling platform leg semicircular plate.
Background technology
China's offshore drilling uses self-elevating drilling platform to be used for the exploration and the exploitation of offshore oil resource more, and such drilling platforms cost is lower, migration property is good, strong to the adaptability of sea-floor relief.Self-elevating drilling platform has a plurality of (being generally 3 to 4) spud leg inserts the seabed, and the mobile drilling platform main body that this kind can go up and down voluntarily supports through spud leg, and spud leg is the triangle posture of spreading out.Be provided with the main shipboard tube of band tooth bar at the triangle place of pile leg structure, connect through stay pipe therebetween, main shipboard tube is the both sides that two corresponding semicircular plates are welded on tooth bar non-toothed part branch plane.At present, the offshore drilling platforms spud leg mainly relies on import with semicircular plate, and general main shipboard tube height is tens meters, needs a lot of piece semicircular plates to be welded, and the welding difficulty is bigger, and the engineering time is longer, and production cost is higher.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that existing product exists; And a kind of manufacturing forming process of used for oil drilling platform leg semicircular plate is provided; The semicircular plate length that processes improves, and the required semicircular plate quantity of processing spud leg main shipboard tube is reduced, and overall performance improves; Shorten the operation that is welded, reduce production costs.
The objective of the invention is to realize by following technical scheme.
The moulding process of used for oil drilling platform leg semicircular plate of the present invention is characterized in that, comprising:
Step 1: with preform, be heated to the temperature that meets rolling requirement, be put into after the taking-up prepare in the chute feeder of forging roll rolling;
Step 2: installation mold on forging roll; Upper and lower mould is installed on the top and bottom rolls of forging roll,, makes the nip rotating speed of control forging roll behind the mould of high temperature steel plate, through the roll forming semicircular plate of two passages through the gap of adjustment upper and lower mould; First reduction in pass, 80～120mm, second reduction in pass, 50～80mm rolls out the semicircular plate maximum length and reaches 18m, and diameter range is that overall diameter is 200～400mm, and interior diameter is 50～200mm.
The manufacturing forming process of aforesaid used for oil drilling platform leg semicircular plate is characterized in that, said preform is the long column body; The semicircular plate length of the length of this long column body and processing is corresponding; The cross sectional shape of this long column body is: the bottom is the complete semicircle identical with the overall diameter that requires rolling semi-circular plate, semicircle diameter range 200～400mm, this semi-circular upper portions; With semicircular diameter is long limit, highly is that the rectangular portion of 50～100mm is grouped into.
The manufacturing forming process of aforesaid used for oil drilling platform leg semicircular plate is characterized in that, the said heating-up temperature scope that meets rolling requirement is 800～1250 ℃.
The manufacturing forming process of aforesaid used for oil drilling platform leg semicircular plate is characterized in that, the mould of installing on the said forging roll, its mold are punch, and bed die is a die; This punch arc radius is 50～200mm, and the groove internal diameter of die is 200～400mm.
The manufacturing forming process of aforesaid used for oil drilling platform leg semicircular plate is characterized in that, said high temperature steel plate is nipped, and the range of speeds of control forging roll is 0.5～1m/s behind the mould, and mould rotates with identical mill speed in the same way up and down.
The beneficial effect of the moulding process of used for oil drilling platform leg semicircular plate of the present invention the present invention relates to a kind of forging molding production of offshore drilling platforms main shipboard tube semicircular plate, belongs to large-scale semi-circular manufacturing technology.The technical scheme that the present invention adopted is: with taking out behind the preform high temperature preheating, carry out moulding at forging roll, obtain the semicircular plate of long size.Semicircular plate and the existing main shipboard tube production method of utilizing manufacturing process moulding of the present invention is to relatively; The length of the monomer semicircular plate that manufacturing process of the present invention obtains is four times of the semicircular plate that obtains of existing technology; And the time of being welded can be reduced; Improve side of a ship tubular construction performance, solved the technical barrier of the too short and poor efficiency of present production monomer side of a ship length of tube.
The specific embodiment
The moulding process of used for oil drilling platform leg semicircular plate of the present invention is characterized in that, comprising:
Step 1: with preform, be heated to the temperature that meets rolling requirement, be put into after the taking-up prepare in the chute feeder of forging roll rolling;
Step 2: installation mold on forging roll; Upper and lower mould is installed on the top and bottom rolls of forging roll,, makes the nip rotating speed of control forging roll behind the mould of high temperature steel plate, through the roll forming semicircular plate of two passages through the gap of adjustment upper and lower mould; First reduction in pass, 80～120mm, second reduction in pass, 50～80mm rolls out the semicircular plate maximum length and reaches 18m, and diameter range is that overall diameter is 200～400mm, and interior diameter is 50～200mm.
The manufacturing forming process of used for oil drilling platform leg semicircular plate of the present invention, wherein, said preform is the long column body; The semicircular plate length of the length of this long column body and processing is corresponding; The cross sectional shape of this long column body is: the bottom is the complete semicircle identical with the overall diameter that requires rolling semi-circular plate, semicircle diameter range 200～400mm, this semi-circular upper portions; With semicircular diameter is long limit, highly is that the rectangular portion of 50～100mm is grouped into; The said heating-up temperature scope that meets rolling requirement is 800～1250 ℃; The mould of installing on the said forging roll, its mold are punch, and bed die is a die; This punch arc radius is 50～200mm, and the groove internal diameter of die is 200～400mm; Said high temperature steel plate is nipped, and the range of speeds of control forging roll is 0.5～1m/s behind the mould, and mould rotates with identical mill speed in the same way up and down.
Embodiment one:
First step: prepare the complete semicircle that the bottom is identical with the overall diameter that requires rolling semi-circular plate earlier; Semicircle diameter is 200mm, and this semi-circular upper portions is long limit with this semicircle diameter; It is 13.5m cylindrical body blank that the cross section of highly forming for the rectangle of 50mm extends into length; This blank is put in the heating furnace heats, temperature is elevated to 1250 ℃ of satisfactory rolling temperatures, for molding procedure is prepared.
Second step: the preparation installation mold, mold is a punch, bed die is a die; This punch arc radius is 50 ± 10mm scope, and the groove internal diameter of die is 200 ± 10mm scope, and mould about this is respectively installed on the top and bottom rolls of forging roll.
Third step: take out the blank of heating from heating furnace, this blank is put in the chute feeder of forging roll, begin to be rolled.Roll drives the mould up and down that is installed on it and rotates with identical mill speed, and (mill speed is 0.5～1m/s), and feed arrangement advances slab with certain speed, after blank and mould interlock, removes feed arrangement.Blank is rolled along the type groove on the roller mold, and drafts is 80～120mm, through finishing after the passage.
Blank to first passage carries out quick alignment, and it is too fast to avoid the high temperature board briquette to descend, and does not influence further moulding.Blank is moved on to the feed arrangement direction, and through that roll is protruding up and down, negative mold is carried out second passage is rolling, rolling drafts is 50～80mm.The mill speed of control roll, mill speed is 0.5～1m/s, finally obtains length and reaches 18m, and overall diameter is 200mm, and interior diameter is the semicircular plate of 50mm.
Through above-mentioned steps, promptly to prepare satisfactory length and reach 18m, overall diameter is 200mm, interior diameter is the semicircular plate of 50mm.
Because above-mentioned steps adopts a fire directly to roll out the semicircular plate of overlength; Saved the molding time of semicircular plate; And the semicircular plate length that makes is existing more than four times of technology, saves time and material for welding and assembling technics, reduced the production time and the cost of whole main shipboard tube; Produce dimensional accuracy and intensity reaches requirement, and the superior performance of whole main shipboard tube.
The advantage of used for oil drilling platform leg semicircular plate moulding process of the present invention is:
1, the length of the single semicircular plate of moulding is more than four times of semicircular plate that existing moulding process is produced.Because the length of semicircular plate lengthening significantly reduces needed semicircular plate quantity, thereby can reduce being welded operation and time of main shipboard tube, production cost is reduced.
2, forming process and technology in the past are different; This moulding process is through the inferior operation of rolling of a fire; Two passages can obtain final shaping unit dimensions length maximum and can reach 18m (limited by heating furnace and heat-treatment furnace), and overall diameter is 200～400mm, and interior diameter is the semi-circular plate of 50～200mm.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. the moulding process of a used for oil drilling platform leg semicircular plate is characterized in that, comprising:
Step 1: with preform, be heated to the temperature that meets rolling requirement, be put into after the taking-up prepare in the chute feeder of forging roll rolling;
Step 2: installation mold on forging roll; Upper and lower mould is installed on the top and bottom rolls of forging roll,, makes the nip rotating speed of control forging roll behind the mould of high temperature steel plate, through the roll forming semicircular plate of two passages through the gap of adjustment upper and lower mould; First reduction in pass, 80～120mm, second reduction in pass, 50～80mm rolls out the semicircular plate maximum length and reaches 18m, and diameter range is that overall diameter is 200～400mm, and interior diameter is 50～200mm.
2. the manufacturing forming process of used for oil drilling platform leg semicircular plate according to claim 1; It is characterized in that; Said preform is the long column body, and the semicircular plate length of the length of this long column body and processing is corresponding, and the cross sectional shape of this long column body is: the bottom is the complete semicircle identical with the overall diameter that requires rolling semi-circular plate; Semicircle diameter range 200～400mm; This semi-circular upper portions is long limit with semicircular diameter, highly is that the rectangular portion of 50～100mm is grouped into.
3. the manufacturing forming process of used for oil drilling platform leg semicircular plate according to claim 1 is characterized in that, the said heating-up temperature scope that meets rolling requirement is 800～1250 ℃.
4. the manufacturing forming process of used for oil drilling platform leg semicircular plate according to claim 1 is characterized in that, the mould of installing on the said forging roll, its mold are punch, and bed die is a die; This punch arc radius is 50～200mm, and the groove internal diameter of die is 200～400mm.
5. the manufacturing forming process of used for oil drilling platform leg semicircular plate according to claim 1; It is characterized in that; Said high temperature steel plate is nipped, and the range of speeds of control forging roll is 0.5～1m/s behind the mould, and mould rotates with identical mill speed in the same way up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010593236.2A CN102527718B (en) | 2010-12-17 | 2010-12-17 | Molding process of semicircular plate for pile leg of oil drilling platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010593236.2A CN102527718B (en) | 2010-12-17 | 2010-12-17 | Molding process of semicircular plate for pile leg of oil drilling platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102527718A true CN102527718A (en) | 2012-07-04 |
| CN102527718B CN102527718B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010593236.2A Expired - Fee Related CN102527718B (en) | 2010-12-17 | 2010-12-17 | Molding process of semicircular plate for pile leg of oil drilling platform |
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| CN (1) | CN102527718B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624488A (en) * | 2013-11-15 | 2014-03-12 | 南通润邦重机有限公司 | Technology for manufacturing pile leg of self-elevating offshore wind power work platform |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031952A (en) * | 1987-09-14 | 1989-03-29 | 湖北省谷城汽车配件厂 | Rolled forging formating technology for front axle of automobile |
| CN1063246A (en) * | 1991-07-20 | 1992-08-05 | 山东省机械进出口公司淄博合营工具厂 | Crowbar production technology and mould |
| JPH09248602A (en) * | 1996-03-15 | 1997-09-22 | Topy Ind Ltd | Method for rolling wide flange beam steel |
| JP2006205195A (en) * | 2005-01-27 | 2006-08-10 | Toyota Motor Corp | Method and apparatus for roll-forging |
| CN101214602A (en) * | 2007-12-28 | 2008-07-09 | 曾德文 | Method of preparing coupler yoke frame |
-
2010
- 2010-12-17 CN CN201010593236.2A patent/CN102527718B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031952A (en) * | 1987-09-14 | 1989-03-29 | 湖北省谷城汽车配件厂 | Rolled forging formating technology for front axle of automobile |
| CN1063246A (en) * | 1991-07-20 | 1992-08-05 | 山东省机械进出口公司淄博合营工具厂 | Crowbar production technology and mould |
| JPH09248602A (en) * | 1996-03-15 | 1997-09-22 | Topy Ind Ltd | Method for rolling wide flange beam steel |
| JP2006205195A (en) * | 2005-01-27 | 2006-08-10 | Toyota Motor Corp | Method and apparatus for roll-forging |
| CN101214602A (en) * | 2007-12-28 | 2008-07-09 | 曾德文 | Method of preparing coupler yoke frame |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624488A (en) * | 2013-11-15 | 2014-03-12 | 南通润邦重机有限公司 | Technology for manufacturing pile leg of self-elevating offshore wind power work platform |
| CN103624488B (en) * | 2013-11-15 | 2016-02-10 | 南通润邦重机有限公司 | A kind of self-lifting offshore wind power job platform spud leg manufacturing process |
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| Publication number | Publication date |
|---|---|
| CN102527718B (en) | 2014-07-09 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Zhaoqing Inventor after: Niu Guangbin Inventor after: Liu Ying Inventor after: Guo Yi Inventor after: Yu Haitao Inventor before: Niu Guangbin Inventor before: Sun Cheng Inventor before: Liu Ying Inventor before: Guo Yi Inventor before: Yu Haitao |
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Free format text: CORRECT: INVENTOR; FROM: NIU GUANGBIN SUN CHENG LIU YING GUO YI YU HAITAO TO: YU ZHAOQING NIU GUANGBIN LIU YING GUO YI YU HAITAO |
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Granted publication date: 20140709 Termination date: 20171217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |