CN101642841A - Manufacturing method of double-twist box-shaped bent member - Google Patents
Manufacturing method of double-twist box-shaped bent member Download PDFInfo
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- CN101642841A CN101642841A CN200910034191A CN200910034191A CN101642841A CN 101642841 A CN101642841 A CN 101642841A CN 200910034191 A CN200910034191 A CN 200910034191A CN 200910034191 A CN200910034191 A CN 200910034191A CN 101642841 A CN101642841 A CN 101642841A
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Abstract
The invention discloses a manufacturing method of a double-twist box-shaped bent member. The double-twist box-shaped bent member is formed by assembling and welding an upper flange plate, a lower flange plate, two side webplates, a transverse partition plate, a longitudinal partition plate and a strengthening rib. The manufacturing method comprises the following steps: 1, preparing four plane steel plates; 2, pressing the upper flange plate, the lower flange plate and the two side webplates; 3, manufacturing the transverse partition plate, the longitudinal partition plate and a strengthening rib plate; 4, manufacturing an assembling and welding positioner; 5, installing and bonding the lower flange plate on the positioner; 6, preheating the plates; 7, positioning and welding the transversepartition plate, the longitudinal partition plate and the strengthening rib on the lower flange plate; 8, installing and welding the upper flange plate at the top of the partition plate; 9, respectively installing and welding the two side webplates at both sides of the transverse partition plate; 10, detecting, repairing, polishing and rectifying the whole member; 11, carrying out the defect detection, the sand spraying and the rust removal of the member; 12, painting. The manufacturing method is suitable for manufacturing the double-twist box-shaped bent member with a plate thickness of 20-90mm and a twist degree of 0-30 degrees in factories.
Description
Technical field
The present invention relates to a kind of preparation method of box-type member, specifically relate to a kind of preparation method of double-twist box-shaped bent member.
Background technology
Terminal roof, new airport, Kunming is the hyperboloid profile, North and South direction is about 850m, the wide about 1120m of east-west direction, about 130,000 square metres of projected area has the outdoor roof of encorbelmenting of 22m～32m, the roof of encorbelmenting that the North regional area is provided with 11m in porch, the terminal south.Roof structure is established 6 channel temps seam, and whole terminal roof is divided into seven parts.The colored ribbon structure has been used in the roof supporting, and this structure has all adopted double-twist box-shaped bent member, and its cross section basic size is 750mm * 3000mm～750mm * 4300mm, and the steel plate thickness of slab relates to 25mm～90mm.Known box-shaped bent member, processing and fabricating adopt traditional grinding tool technology and traditional firer's bent plate technology.But for the making of thickness of slab at the large scale box-shaped bent member of 25mm～90mm, if adopt traditional mould process and traditional firer's bent plate technology, technical problems such as not prison welding, distortion is big, error is many, cost is high, energy consumption is big, efficiency of construction is low then can appear.
Summary of the invention
Goal of the invention: the objective of the invention is provides a kind of preparation method of double-twist box-shaped bent member in order to overcome the deficiencies in the prior art.
Technical scheme: in order to realize above purpose, the preparation method of a kind of double-twist box-shaped bent member of the present invention, its member is welded by top flange plate, bottom wing listrium, left web, right web, lateral partitions, longitudinal baffle, stiffening rib assembling, and its making step is as follows:
(1) prepares four plane steel plates;
(2) with plane steel plate on request size be pressed into top flange plate, bottom wing listrium, left web and the right web of spatial warping;
(3) press the component inside shape and size and make lateral partitions, longitudinal baffle, stiffening rib;
(4) make and to be used to the moulding bed that assembles, weld;
(5) the bottom wing listrium is placed on the moulding bed, and fits with moulding bed;
(6) plate is carried out preheating;
(7) locate the position of lateral partitions, longitudinal baffle on the bottom wing listrium, one group of lateral partitions uprightly is welded on the bottom wing listrium lateral attitude at interval, one group of longitudinal baffle uprightly is welded on the bottom wing listrium lengthwise position at interval;
(8) top flange plate is installed in the top of lateral partitions, longitudinal baffle, and fixes, then top flange plate and lateral partitions, longitudinal baffle are welded with anchor clamps; One group of stiffening rib is welded on lateral partitions and top flange plate joint place, and one group of stiffening rib is welded on lateral partitions and bottom wing listrium joint place;
(9) left web, right web are installed on the left and right sides of lateral partitions respectively, and fix, then left web, right web and lateral partitions are welded with anchor clamps;
(10) to whole member check, repairing, polishing and correction process;
(11) member flaw detection, derusting by sandblasting;
(12) paint whole member
In the said process in (7), (8) and (9), carry out after-baking after the welding, being the hydrogen that disappears handles, be incubated 0.5 hour～6 hours with the even heating of the local sheet material of electrically heated method butt welded seam and both sides thereof and with the heat preserving and insulating material parcel, temperature is 200 ℃～350 ℃, cooling naturally in air then; Electrical heating is optional to be used in to burn-on on the plate and evenly to be hung with the nail that bumps of electric heater, adopts heat preserving and insulating material that electric heater is wrapped then, and external application one deck lead wire net is fastening with insulation material, evenly heats; Heat preserving and insulating material is generally selected asbestos for use; Adopt such after-baking that the diffusible hydrogen that infiltrates the molten bath before the weldering is for some reason overflowed rapidly, prevent from hydrogen induced cracking to occur in weld seam and the heat affected area.
In the said process (2), the concrete grammar of compacting top flange plate, bottom wing listrium, left web and right web is: top flange plate, bottom wing listrium, left web and the right web with spatial warping carries out the planar development setting-out earlier, linear to expand into face profile linear with its edges of boards space profiles, linear in the board plane realized by cutting, after cutting stock is finished, roll shaping with three rolls plate bending machine then, the part is equipped with the hydraulic press shaping.
The assembling of bending component all should be installed welding on special-purpose moulding bed, when special-purpose moulding bed was made, the linear linear setting according to member oneself height direction of the short transverse of moulding bed adopted total powerstation to position; And the linear base area line-transect of moulding bed width and outline projection line are determined; And moulding bed line style suitable for reading and component surface profile match; Described moulding bed, its location dimension error are that (0mm～1mm), horizontal gradient error suitable for reading are that (0mm～1mm), the absolute altitude error is (0mm～0.5mm).
Carry out preheating in the 100mm scope of butt welded seam both sides before preheating refers to weld in the said process (6), pre-thermal recovery ceramic electrical heating plate, 100 ℃～150 ℃ of preheat temperatures are measured the control temperature by temperature measurer and temperature controller during heating.
Can weld after must be before welding internal partition and reinforcement floor errorless the accurate positioning check of each part that end is installed.
Because the present invention is a kind of preparation method of double-twist box-shaped bent member, used steel plate sheet material is thick, twist is big, dimensional accuracy under free state is difficult to guarantee, this just need select anchor clamps for use according to the shape of member, member is under the fixing state assembles, locate, weld, thereby reach the purpose of control welding deformation.
Beneficial effect: the preparation method of a kind of double-twist box-shaped bent member provided by the invention, compared with prior art have the following advantages: 1, carry out after-baking after the welding diffusible hydrogen that infiltrates the molten bath before the weldering is for some reason overflowed rapidly, prevent from hydrogen induced cracking to occur in weld seam and the heat affected area, improved product quality; 2, the present invention assembles welding with bent plate component and forms double-twist box-shaped bent member on moulding bed, replaces traditional unitary mould with the numerical control mould, has enlarged the range of work, has improved machining accuracy; 3, pass through the accurate making of moulding bed, the dimensional accuracy height of double-twist box-shaped bent member, error is little; 4, by sectional forming, realize the big workpiece of skinny device moulding, solved the insoluble big thickness of traditional manufacturing technique, a high twist structure manufacture difficult problem has been saved energy resource consumption, has lowered cost, has improved production efficiency.
Description of drawings
Fig. 1 is the schematic diagram of a kind of structure of made member of the present invention;
Fig. 2 is a kind of cross section schematic diagram of made member of the present invention.
The specific embodiment:
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
The preparation method of double-twist box-shaped bent member as shown in Figure 1 and Figure 2, its member is welded by top flange plate 21, bottom wing listrium 22, left web 23, right web 24, lateral partitions 25, longitudinal baffle 26, stiffening rib 27 assemblings, member thickness of slab 25mm, torsion resistance 20 degree, its making step is as follows:
(1) prepares four plane steel plates;
(2) top flange plate 21, bottom wing listrium 22, left web 23 and the right web 24 with spatial warping carries out the planar development setting-out, linear to expand into face profile linear with its edges of boards space profiles, linear in the board plane realized by cutting, after cutting stock is finished, roll shaping with three rolls plate bending machine, the part is equipped with the hydraulic press shaping, transfers shape according to actual compacting situation during compacting, location and shaping reach the requirement shaping up to whole plate and finish;
(3) press the component inside shape and size and make lateral partitions 25, longitudinal baffle 26, stiffening rib 27, and open a square opening, make things convenient for interior welds at the center of every internal partition;
When (4) making the moulding bed that is used to weld, the linear linear setting according to member oneself height direction of the short transverse of moulding bed adopts total powerstation to position; And the linear base area line-transect of moulding bed width and outline projection line are determined; And moulding bed line style suitable for reading and component surface profile match;
(5) bottom wing listrium 22 is placed on the moulding bed, and fits with moulding bed;
(6) carry out preheating in the 100mm scope of butt welded seam both sides before the welding, pre-thermal recovery ceramic electrical heating plate, 100 ℃～150 ℃ of preheat temperatures are measured the control temperature by temperature measurer and temperature controller during heating;
(7) position of location lateral partitions 25, longitudinal baffle 26 on bottom wing listrium 22 uprightly is welded on one group of lateral partitions 25 on bottom wing listrium 22 lateral attitudes at interval, and one group of longitudinal baffle 25 uprightly is welded on bottom wing listrium 22 lengthwise positions at interval;
(8) top flange plate 21 is installed in the top of lateral partitions 25, longitudinal baffle 26, and fixes, then top flange plate 21 and lateral partitions 25, longitudinal baffle 26 are welded with anchor clamps; One group of stiffening rib 27 is welded on lateral partitions 25 and top flange plate 21 joint places, and another group stiffening rib 27 is welded on lateral partitions 25 and bottom wing listrium 22 joint places;
(9) left web 23, right web 24 are installed on the left and right sides of lateral partitions 25 respectively, and fix, then left web 23, right web 24 are welded with lateral partitions 25 with anchor clamps;
Carrying out after-baking after the welding, is 200 ℃～250 ℃ with the even heating of the local sheet material of electrically heated method butt welded seam and both sides thereof and with asbestos parcel temperature, is incubated 0.5 hour, cools off in air then;
(10) to whole member check, repairing, polishing and correction process;
(11) member flaw detection, derusting by sandblasting;
(12) paint whole member.
Claims (7)
1, a kind of preparation method of double-twist box-shaped bent member, described member is welded by top flange plate (21), bottom wing listrium (22), left web (23), right web (24), lateral partitions (25), longitudinal baffle (26), stiffening rib (27) assembling, and it is characterized in that: its making step is as follows:
(1) prepares four plane steel plates;
(2) with plane steel plate on request size be pressed into top flange plate (21), bottom wing listrium (22), left web (23) and the right web (24) of spatial warping;
(3) press the component inside shape and size and make lateral partitions (25), longitudinal baffle (26), stiffening rib (27);
(4) make and to be used to the moulding bed assembling, weld;
(5) bottom wing listrium (22) is placed on the moulding bed, and fits with moulding bed;
(6) plate is carried out preheating;
(7) go up the position of locating lateral partitions (25), longitudinal baffle (26) at bottom wing listrium (22), one group of lateral partitions (25) uprightly is welded on bottom wing listrium (22) lateral attitude at interval, and one group of longitudinal baffle (26) uprightly is welded on bottom wing listrium (22) lengthwise position at interval;
(8) top flange plate (21) is installed in the top of lateral partitions (25), longitudinal baffle (26), and fixes, then top flange plate (21) and lateral partitions (25), longitudinal baffle (26) are welded with anchor clamps; One group of stiffening rib (27) is welded on the joint place of lateral partitions (25) and top flange plate (21), and another group stiffening rib (27) is welded on the joint place of lateral partitions (25) and bottom wing listrium (22);
(9) left web (23), right web (24) are installed on the left and right sides of lateral partitions (25) respectively, and fix, then left web (23), right web (24) are welded together with lateral partitions (25) with anchor clamps;
(10) to whole member check, repairing, polishing and correction process;
(11) member flaw detection, derusting by sandblasting;
(12) paint whole member.
2, a kind of two preparation methods of turning round the box-shaped bent member according to claim 1 is characterized in that: in step (7), (8), (9), will carry out after-baking after the welding.
3, a kind of two preparation methods of turning round the box-shaped bent member according to claim 2, it is characterized in that: described after-baking is to be incubated 0.5 hour～6 hours with the even heating of the local sheet material of electrically heated method butt welded seam and both sides thereof and with the heat preserving and insulating material parcel, temperature is 200 ℃～350 ℃, cooling naturally in air then.
4, the preparation method of a kind of double-twist box-shaped bent member according to claim 1, it is characterized in that: in the step (2), compacting top flange plate (21), bottom wing listrium (22), the concrete grammar of left side web (23) and right web (24) is: elder generation is with the top flange plate (21) of spatial warping, bottom wing listrium (22), left side web (23) and right web (24) carry out the planar development setting-out, linear to expand into face profile linear with its edges of boards space profiles, linear in the board plane realized by cutting, after cutting stock is finished, roll shaping with three rolls plate bending machine then, the part is equipped with the hydraulic press shaping and finishes.
5, the preparation method of a kind of double-twist box-shaped bent member according to claim 1 is characterized in that: assembling, welding positioner in the step (4), and the linear linear setting according to member oneself height direction of its short transverse adopts total powerstation to position; And the linear base area line-transect of moulding bed width and outline projection line are determined; And moulding bed line style suitable for reading and component surface profile match; Described moulding bed, its location dimension error is 0mm～1mm, and horizontal gradient error suitable for reading is 0mm～1mm, and the absolute altitude error is 0mm～0.5mm.
6, the preparation method of a kind of double-twist box-shaped bent member according to claim 1, it is characterized in that: carry out preheating in the 100mm scope of butt welded seam both sides before preheating refers to weld in the step (6), pre-thermal recovery ceramic electrical heating plate, 100 ℃～150 ℃ of preheat temperatures are measured the control temperature by temperature measurer and temperature controller during heating.
7, the preparation method of a kind of double-twist box-shaped bent member according to claim 3 is characterized in that: described heating-up temperature is 200 ℃～250 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910034191A CN101642841A (en) | 2009-08-25 | 2009-08-25 | Manufacturing method of double-twist box-shaped bent member |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910034191A CN101642841A (en) | 2009-08-25 | 2009-08-25 | Manufacturing method of double-twist box-shaped bent member |
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| CN102059520A (en) * | 2010-12-08 | 2011-05-18 | 中国建筑第八工程局有限公司 | Method for manufacturing twisted case |
| CN102069308A (en) * | 2010-12-08 | 2011-05-25 | 中国建筑第八工程局有限公司 | Method for manufacturing curtain wall pillar |
| CN102091877A (en) * | 2010-12-21 | 2011-06-15 | 中国建筑第八工程局有限公司 | Construction method for butt welding irregular space box-type steel members |
| CN102172692A (en) * | 2011-01-06 | 2011-09-07 | 周光毅 | Steel plate crankle processing technology and special apparatus thereof as well as crankle component processing technology |
| CN102211275A (en) * | 2010-02-23 | 2011-10-12 | 空中客车运营简化股份公司 | Method for manufacturing a reinforced and curved metal structure and structure obtained by the method |
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| CN102069308A (en) * | 2010-12-08 | 2011-05-25 | 中国建筑第八工程局有限公司 | Method for manufacturing curtain wall pillar |
| CN102059520A (en) * | 2010-12-08 | 2011-05-18 | 中国建筑第八工程局有限公司 | Method for manufacturing twisted case |
| CN102059520B (en) * | 2010-12-08 | 2013-01-16 | 中国建筑第八工程局有限公司 | Method for manufacturing twisted case |
| CN102091877A (en) * | 2010-12-21 | 2011-06-15 | 中国建筑第八工程局有限公司 | Construction method for butt welding irregular space box-type steel members |
| CN102172692A (en) * | 2011-01-06 | 2011-09-07 | 周光毅 | Steel plate crankle processing technology and special apparatus thereof as well as crankle component processing technology |
| CN102626842A (en) * | 2012-05-02 | 2012-08-08 | 四川蓝星机械有限公司 | Welding method for circular seam of mitre elbow pipeline casing |
| CN102626842B (en) * | 2012-05-02 | 2014-07-30 | 四川蓝星机械有限公司 | Welding method for circular seam of mitre elbow pipeline casing |
| CN102922100A (en) * | 2012-11-19 | 2013-02-13 | 大连中盈能源管理有限公司 | Welding method of stainless steel rectangular air pipe |
| CN103056616A (en) * | 2012-12-26 | 2013-04-24 | 江苏沪宁钢机股份有限公司 | Twisting box-shaped member and manufacture process thereof |
| CN103056616B (en) * | 2012-12-26 | 2016-05-18 | 江苏沪宁钢机股份有限公司 | A kind of bending box component and manufacturing process thereof |
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| CN108723630A (en) * | 2018-06-28 | 2018-11-02 | 二十二冶集团装备制造有限公司 | The production method of helically twisted box |
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| CN109339466B (en) * | 2018-11-23 | 2024-01-26 | 中冶建工集团有限公司 | Large-section twisted steel box girder assembling jig frame, assembling ejection device and processing method |
| CN109339466A (en) * | 2018-11-23 | 2019-02-15 | 中冶建工集团有限公司 | Big section distortion steel box-girder assembling jig frame, assembly ejector apparatus and processing method |
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| CN111408826A (en) * | 2020-05-08 | 2020-07-14 | 安徽伟宏钢结构集团股份有限公司 | Method for welding high-connection-strength crankle component |
| CN112404785A (en) * | 2020-11-10 | 2021-02-26 | 上海宝冶集团有限公司 | Q390B thick plate box type component welding quality control method |
| CN114211214B (en) * | 2022-02-21 | 2022-04-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel complex curved surface contraction section forming method |
| CN114211214A (en) * | 2022-02-21 | 2022-03-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel complex curved surface contraction section forming method |
| CN114769923A (en) * | 2022-04-20 | 2022-07-22 | 中国三峡建工(集团)有限公司 | Welding method for cantilever structure with rib plate |
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Open date: 20100210 |