CN104439983A - Ocean platform leg rack board manufacture method - Google Patents
Ocean platform leg rack board manufacture method Download PDFInfo
- Publication number
- CN104439983A CN104439983A CN201410769923.3A CN201410769923A CN104439983A CN 104439983 A CN104439983 A CN 104439983A CN 201410769923 A CN201410769923 A CN 201410769923A CN 104439983 A CN104439983 A CN 104439983A
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- steel ingot
- steel
- shell ring
- ingot
- cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses an ocean platform leg rack board manufacture method and belongs to the technical field of steel structure manufacture of offshore engineering. The process includes steelmaking, casting, forging, joint rolling, quenching and tempering, cutting and flattening and particularly includes 1, steel ingot manufacturing, namely determining materials according to elements for manufacturing leg rack boards, and casting the steel ingots after melt steel is smelted roughly and finely through a vacuum electric furnace; 2, steel ingot casting, namely heating the steel ingots at the temperature ranging from 1200 DEG C to 1300 DEG C, shaping the steel ingots into a regular circular cylinder shape, thickening and punching; 3, heating joints, and shaping and rolling the joints through a rolling mill; 4, quenching and tempering the joints; 5, joint cutting, namely placing the joints on a special flame cutting machine and cutting axially, turning the joints by 180 degrees to cut after the cutting, and cutting the joints into two halves; 6, shaping by pressing for one or multiple times; 7, rack board machining, namely machining flattened boards according to the geometry size and specification and manufacturing teeth.
Description
Technical field
The present invention relates to a kind of manufacture method of ocean platform pile leg rack-plate, specifically a kind of manufacture method of heavv section rack-plate, belong to the manufacture of steel structure technical field in ocean engineering.
Background technology
At present, in the pile leg structure of jack up offshore platform, its main bearing member rack-plate, due to the special requirement used, require that its intensity and toughness are all very high, in addition in order to adapt to the ever-increasing requirement of lifting platform ability, the physical dimension of rack-plate particularly thickness is also continuing to increase, existing thickness is less than the general of 150mm and is manufactured by conticaster, and the rack-plate being greater than 150mm is manufactured by steel ingot rolling.Also need after rolling to carry out modifier treatment by special heat treatment, just can reach performance requirement; There is forging ratio deficiency in the manufacturing process due to the larger rack-plate of thickness, it is many and disperse the problems such as wayward, product quality unstable properties to manufacture link.
Summary of the invention
In order to overcome above-mentioned technical deficiency, a kind of mode by shell ring forging rolling has been the object of the present invention is to provide to manufacture the process of ocean platform pile leg rack-plate, the difficult problem that this invention can solve the dispersion of existing fabrication, material property is difficult to guarantee, also can save manufacturing cost.
The technical solution adopted for the present invention to solve the technical problems is:
Except steel ingot manufacture, forging equipment, heat-treatment furnace, quenching apparatus, shell ring milling equipment can be arranged on so that the convenient processing and fabricating controlling rack-plate in same factory building, its technological process is: steel-making → ingot casting → forging → shell ring rolling → modified → break → flatten; The step of manufacture method is;
One, manufacture steel ingot: determine steel ingot material: according to the element determination material of the spud leg rack-plate that will manufacture, calculate required ingot material gross weight; Adopt vacuum electric furnace slightly to make steel teeming after water and vacuum electric furnace refining, smelting molten steel in electric furnace also carries out ladle refining, application of vacuum; Adopted by molten steel vacuum treated method to be poured in ingot mould, after cooling, reverse mould takes off ingot;
Two, steel ingot forging:
The Gang Ding Dun shearing remove feeder is thick: heating steel ingot to 1200 DEG C--and 1300 DEG C, steel ingot level is horizontally placed on hydraulic press or hydraulic press anvil, rotates steel ingot, and pat steel ingot with press anvil head and play stupefied place and carry out shaping, until steel ingot becomes just cylindric, then it is thick steel ingot vertical to be put into row Dun; Punching: the punching anvil head using φ 300-φ 500, depress fast, being washed out by solid steel ingot core becomes hollow steel ingot, and removes end dross and burr; The pulling of ingot body and finishing: the steel ingot completing punching is horizontally placed on press anvil together with plug level, penetrate the plug of φ 300mm-φ 500mm, manipulator clamps and rotates steel ingot, with press anvil head along steel ingot circumference forging and stamping ingot body, pull out, behind smooth upper and lower end face, finally obtain hollow shell ring forging blank;
Three, shell ring rolling: shell ring is heated to rolling temperature, sends into shell ring milling train and carries out shaping rolling, and rolling pressure is in 300mm;
Four, shell ring is modified: forging blank is heated in heating furnace 1200 DEG C and comes out of the stove, carry out modifier treatment;
Five, shell ring is broken: be placed on by shell ring on special flame cutting machine and cut along shell ring axial direction, after cutting, shell ring is turned over turnback and cut, cutd open by shell ring as two halves;
Six, pressing: be placed on forcing press after the shell ring half after cutting is heated to uniform temperature and flatten, can once flatten shaping in applanation process or multi-pass pressing is shaping.
Seven, rack-plate processing: the sheet material after smooth is carried out machining, tooth processed according to the physical dimension specification of rack-plate.
The invention has the beneficial effects as follows, adopt smelting ingot casting, process that forging, shell ring rolling, heat treatment, flattening, machine add complete set manufactures rack-plate, effectively can solve the difficult problem that existing fabrication is disperseed, material property not easily ensures, the performance of material can be ensured, and greatly reduce the manufacturing cost of rack-plate.
Detailed description of the invention
The manufacture method of a kind of ocean platform pile leg rack-plate of the present invention, the steps include:
One, manufacture steel ingot: determine steel ingot material: according to the element determination material of the spud leg rack-plate that will manufacture, calculate required ingot material gross weight; Adopt vacuum electric furnace slightly to make steel teeming after water and vacuum electric furnace refining, smelting molten steel in electric furnace also carries out ladle refining, application of vacuum; Adopted by molten steel vacuum treated method to be poured in ingot mould, after cooling, reverse mould takes off ingot;
Two, steel ingot forging:
The Gang Ding Dun shearing remove feeder is thick: heating steel ingot to 1200 DEG C--and 1300 DEG C, steel ingot level is horizontally placed on hydraulic press or hydraulic press anvil, rotates steel ingot, and pat steel ingot with press anvil head and play stupefied place and carry out shaping, until steel ingot becomes just cylindric, then it is thick steel ingot vertical to be put into row Dun; Punching: the punching anvil head using φ 300-φ 500, depress fast, being washed out by solid steel ingot core becomes hollow steel ingot, and removes end dross and burr; The pulling of ingot body and finishing: the steel ingot completing punching is horizontally placed on press anvil together with plug level, penetrate the plug of φ 300mm-φ 500mm, manipulator clamps and rotates steel ingot, with press anvil head along steel ingot circumference forging and stamping ingot body, pull out, behind smooth upper and lower end face, finally obtain hollow shell ring forging blank;
Three, shell ring rolling: shell ring is heated to rolling temperature, sends into shell ring milling train and carries out shaping rolling, and rolling pressure is in 300mm;
Four, shell ring is modified: forging blank is heated in heating furnace 1200 DEG C and comes out of the stove, carry out modifier treatment;
Five, shell ring is broken: be placed on by shell ring on special flame cutting machine and cut along shell ring axial direction, after cutting, shell ring is turned over turnback and cut, cutd open by shell ring as two halves;
Six, pressing: be placed on forcing press after the shell ring half after cutting is heated to uniform temperature and flatten, can once flatten shaping in applanation process or multi-pass pressing is shaping.
Seven, rack-plate processing: the sheet material after smooth is carried out machining, tooth processed according to the physical dimension specification of rack-plate.
Claims (1)
1. the manufacture method of an ocean platform pile leg rack-plate, it is characterized in that: the steps include: except steel ingot manufacture, forging equipment, heat-treatment furnace, quenching apparatus, shell ring milling equipment can be arranged on so that the convenient processing and fabricating controlling rack-plate in same factory building, its technological process is: steel-making → ingot casting → forging → shell ring rolling → modified → break → flatten; The step of manufacture method is;
One, manufacture steel ingot: determine steel ingot material: according to the element determination material of the spud leg rack-plate that will manufacture, calculate required ingot material gross weight; Adopt vacuum electric furnace slightly to make steel teeming after water and vacuum electric furnace refining, smelting molten steel in electric furnace also carries out ladle refining, application of vacuum; Adopted by molten steel vacuum treated method to be poured in ingot mould, after cooling, reverse mould takes off ingot;
Two, steel ingot forging:
The Gang Ding Dun shearing remove feeder is thick: heating steel ingot to 1200 DEG C--and 1300 DEG C, steel ingot level is horizontally placed on hydraulic press or hydraulic press anvil, rotates steel ingot, and pat steel ingot with press anvil head and play stupefied place and carry out shaping, until steel ingot becomes just cylindric, then it is thick steel ingot vertical to be put into row Dun; Punching: the punching anvil head using φ 300-φ 500, depress fast, being washed out by solid steel ingot core becomes hollow steel ingot, and removes end dross and burr; The pulling of ingot body and finishing: the steel ingot completing punching is horizontally placed on press anvil together with plug level, penetrate the plug of φ 300mm-φ 500mm, manipulator clamps and rotates steel ingot, with press anvil head along steel ingot circumference forging and stamping ingot body, pull out, behind smooth upper and lower end face, finally obtain hollow shell ring forging blank;
Three, shell ring rolling: shell ring is heated to rolling temperature, sends into shell ring milling train and carries out shaping rolling, and rolling pressure is in 300mm;
Four, shell ring is modified: forging blank is heated in heating furnace 1200 DEG C and comes out of the stove, carry out modifier treatment;
Five, shell ring is broken: be placed on by shell ring on special flame cutting machine and cut along shell ring axial direction, after cutting, shell ring is turned over turnback and cut, cutd open by shell ring as two halves;
Six, pressing: be placed on forcing press after the shell ring half after cutting is heated to uniform temperature and flatten, can once flatten shaping in applanation process or multi-pass pressing is shaping;
Seven, rack-plate processing: the sheet material after smooth is carried out machining, tooth processed according to the physical dimension specification of rack-plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769923.3A CN104439983A (en) | 2014-12-15 | 2014-12-15 | Ocean platform leg rack board manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769923.3A CN104439983A (en) | 2014-12-15 | 2014-12-15 | Ocean platform leg rack board manufacture method |
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| Publication Number | Publication Date |
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| CN104439983A true CN104439983A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410769923.3A Pending CN104439983A (en) | 2014-12-15 | 2014-12-15 | Ocean platform leg rack board manufacture method |
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| CN (1) | CN104439983A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234634A (en) * | 2015-10-22 | 2016-01-13 | 苏州胜利精密制造科技股份有限公司 | Machining method of liquid crystal television set support |
| CN108435821A (en) * | 2018-02-02 | 2018-08-24 | 国机金属江苏有限公司 | A kind of thin square plate forging method |
| CN109396759A (en) * | 2018-11-01 | 2019-03-01 | 安阳工学院 | A kind of 980 steel large-diameter cylinder body forging rolling bonding manufacturing methods of deep diving |
| CN113774278A (en) * | 2021-08-20 | 2021-12-10 | 中信重工机械股份有限公司 | Novel water-quenched cast steel heavy-duty gear material and preparation method thereof |
Citations (6)
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|---|---|---|---|---|
| DE3240628A1 (en) * | 1981-11-09 | 1983-05-19 | Lear Siegler, Inc., Santa Monica, Calif. | GEAR WHEEL |
| GB2108026B (en) * | 1981-10-29 | 1985-05-22 | Cam Gears Ltd | Manufacturing a rack member |
| CN1068985A (en) * | 1991-07-30 | 1993-02-17 | 中国人民解放军运输工程学院 | A kind of processing method of gear ratio rack |
| CN1192387A (en) * | 1997-02-25 | 1998-09-09 | 光洋精工株式会社 | Process for fabrication of rack shaft and fabrication machine therefor |
| CN103231216A (en) * | 2013-05-10 | 2013-08-07 | 山东亚盛重工股份有限公司 | Manufacturing technique and device for composite board |
| CN103273272A (en) * | 2013-06-04 | 2013-09-04 | 中国科学院金属研究所 | Forging-and-rolling compounded forming method for comprehensively promoting internal and external quality of wide and thick plate blanks |
-
2014
- 2014-12-15 CN CN201410769923.3A patent/CN104439983A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2108026B (en) * | 1981-10-29 | 1985-05-22 | Cam Gears Ltd | Manufacturing a rack member |
| DE3240628A1 (en) * | 1981-11-09 | 1983-05-19 | Lear Siegler, Inc., Santa Monica, Calif. | GEAR WHEEL |
| CN1068985A (en) * | 1991-07-30 | 1993-02-17 | 中国人民解放军运输工程学院 | A kind of processing method of gear ratio rack |
| CN1192387A (en) * | 1997-02-25 | 1998-09-09 | 光洋精工株式会社 | Process for fabrication of rack shaft and fabrication machine therefor |
| CN103231216A (en) * | 2013-05-10 | 2013-08-07 | 山东亚盛重工股份有限公司 | Manufacturing technique and device for composite board |
| CN103273272A (en) * | 2013-06-04 | 2013-09-04 | 中国科学院金属研究所 | Forging-and-rolling compounded forming method for comprehensively promoting internal and external quality of wide and thick plate blanks |
Non-Patent Citations (1)
| Title |
|---|
| 石磊等: "钻井平台桩腿齿条板的制造技术", 《中国科技教育•理论版》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234634A (en) * | 2015-10-22 | 2016-01-13 | 苏州胜利精密制造科技股份有限公司 | Machining method of liquid crystal television set support |
| CN108435821A (en) * | 2018-02-02 | 2018-08-24 | 国机金属江苏有限公司 | A kind of thin square plate forging method |
| CN108435821B (en) * | 2018-02-02 | 2020-04-03 | 国机金属江苏有限公司 | Thin square plate forging method |
| CN109396759A (en) * | 2018-11-01 | 2019-03-01 | 安阳工学院 | A kind of 980 steel large-diameter cylinder body forging rolling bonding manufacturing methods of deep diving |
| CN113774278A (en) * | 2021-08-20 | 2021-12-10 | 中信重工机械股份有限公司 | Novel water-quenched cast steel heavy-duty gear material and preparation method thereof |
| CN113774278B (en) * | 2021-08-20 | 2022-06-10 | 中信重工机械股份有限公司 | Novel water-quenched cast steel heavy-duty gear material and preparation method thereof |
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Application publication date: 20150325 |