CN102465600A - Method for manufacturing steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering - Google Patents
Method for manufacturing steel structure framework of benzene hydrogenation main device in benzene hydrogenation engineering Download PDFInfo
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- CN102465600A CN102465600A CN2010105476247A CN201010547624A CN102465600A CN 102465600 A CN102465600 A CN 102465600A CN 2010105476247 A CN2010105476247 A CN 2010105476247A CN 201010547624 A CN201010547624 A CN 201010547624A CN 102465600 A CN102465600 A CN 102465600A
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Abstract
The invention relates to a method for manufacturing a steel structure framework of a benzene hydrogenation main device in benzene hydrogenation engineering, and the method is characterized by comprising the following steps of: a, manufacturing parts; b, lofting, marking out, cutting and drilling; c, correcting the parts; d, assembling a steel column; e, welding the steel structure; and f, coating the steel structure. The method for manufacturing the steel structure framework of the benzene hydrogenation main device in the benzene hydrogenation engineering, provided by the invention, has the advantages of reasonable manufacturing step and design, simplicity in operation, safe and reliable engineering quality and low engineering cost.
Description
Technical field
The present invention relates to a kind of structure steel fabrication method, specifically, is a kind of benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method.
Background technology
The technology of benzene hydrogenation device is more special, its system complex, and equipment is many, and the pressure of system own, temperature are higher, and pump unit does not allow idle running.The benzene hydrogenation engineering mainly is divided into the ancillary facility of central control room and electric substation, refining plant, water supply and sewage work, air compression station, storage and handling facility (tank field and pump house), the power supply of full factory and the illumination of full factory, torch and engineering; Lightning protection, fire prevention, explosion-proof specific (special) requirements are arranged in the installation of these facilities, and wherein benzene hydrogenation engineering benzene hydrogenation master device structure steel fabrication is the important step in whole electric (installation) system.At present domesticly built or still be in the stage lack of standardization building benzene hydrogenation engineering benzene hydrogenation master device structure steel fabrication, existed much not science, irrational place, manufacturing process is numerous and diverse, manufacturing cost is high.
Therefore known benzene hydrogenation engineering benzene hydrogenation master device steel structure frame is made above-mentioned all inconvenience and the problem of existing.
Summary of the invention
The object of the invention is to propose a kind of best in quality, safe and reliable benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method.
For realizing above-mentioned purpose, technical solution of the present invention is:
A kind of benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method is characterized in that may further comprise the steps:
A, component processing utilize threedimensional model and other computer software to carry out the accurate setting-out of size, fully carry out rational surplus according to specification, the size of welding method, welding sequence, welding point form and part and reserve; Batching should be followed first main part; Rear attachment, order is from big to small carried out discharge, fully rationally utilizes material; Span, deadweight requirement according to construction drawing and beam; Preparatory arch camber is set on the web of beam, and the camber line arch camber is taked in arch camber in advance, to guarantee the acceptance requirement of final beam camber;
B, setting-out, line, cutting and drilling, number material pronucleus is to steel specification, material, and the check surface quality of steel, and is uneven as finding steel; Dirts such as corrosion, paint are arranged, correct after the cleaning number material again, number material will leave the cutting surplus, and the dirt removal with steel cutting area surface before the cutting is clean; Slag and splash are removed in cutting back, and it is steady that steel plate is set level pad, leave the space below the slot; Bull bar straightener cutting in the blanking of vertical bar plate, numerical control cutting machine in the arc plate blanking, diaphragm and endoporus thereof adopt NC flame cutting; To guarantee cutting accuracy, prevent breach during cutting, the part edge of main bearing member does not allow breach; The part edge breach of general member is not more than 2mm, and excessive defect carries out repair welding and polishes smooth, otherwise inaccurate inflow next procedure; Steel column and beam connecting hole and crane girder and automatically the plate connecting hole by three-dimension numerical controlled drilling machine drilling, the crane girder end plate be connected plate hole by the numerical control plane drill press drilling, the bolt hole of processing is a right cylindrical; And perpendicular to the steel surface of position; Gradient is less than 1/20, and the no burr of its hole periphery breaks; Horn mouth or concavo-convex vestige, smear metal is removed clean; The number of degrees of groove of connecting material are controlled in the setting ± 5 ° scope;
The rectification of c, component is that gagging and flame straightening are heat straightening to the part of the distortion after shearing or the flame cutting, bending and the part employing machinery rectification that the flexural deformation meeting of preceding road influences the next procedure quality; The attachments such as slag of cleaning steel surface before machinery is corrected, anti-mouthful of equating of shearing prevents when machinery overstocks, to be absorbed in the steel; Form pockmark, structural carbon steel and low-alloy structural steel are when heat straightening, and heating-up temperature is no more than 900 ℃; Low-alloy structural steel is cooling naturally after adding heat straightening, reduce to room temperature before, must not hammering steel material and water quenching; Cold slowly afterburning when strong, room temperature should not be lower than-5 ℃, and cold strong total deformation rate must not must not coldly be rectified greater than the pulling force rod member that 2% o'clock impact value does not meet the demands; Steel surface after the rectification does not have tangible indenture or damage, and scratch depth is not more than 0.5mm, and is not more than 1/2 of the negative allowable variation of steel plate thickness;
D, steel column assembling, steel column is assembled on the steel mould base of lining, and the post bottom surface is welded allowance for shrinkage to platform bracket supporting surface apart from reserving, and the datum of steel column assembling is gone up the plane with the support of shaft axis peace dummy cow leg and is as the criterion; Bearing diagonal is as the criterion with meld line, carries out reinforcement measure before the welding when steel column platform bracket is longer, prevents welding deformation, when bracket and steel column welding; The top flange weld seam belongs to the tensile region, the weld seam through welding, and do ultrasonic testing/ ultrasonic examination; Joint face is straight, edges of boards, and the Kong Bianwu burr is to guarantee the closely connected contact of rubbing surface; Rubbing surface must not have iron oxide, paint, greasy dirt and earth;
E, steel work welding, wherein:
The manual electric arc welding welding condition:
The welding technique of submerged arc welding parameter:
Ar-CO
2The gas shielded arc welding welding condition:
F, steel work application, steel column, crane girder, the application of roof girder steel construction piece, wherein: steel work priming paint uses aqueous inorganic spelter coating, application twice, its build 100 μ m; The transition zone lacquer uses epoxy to connect lacquer, build 25 μ m; Intermediate coat uses coating in the epoxy micaceous iron, build 30 μ m; But finish paint uses overcoating polyurethane finish, application twice, its build 30 μ m; Airless spraying is adopted in application; The precoating of edge and sectional repair can adopt spread coating and roll coating process; All members all spray priming paint before dispatching from the factory, must not be greater than 3 hours to priming paint spray time interval after derusting by sandblasting is accomplished.
Benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method of the present invention can also adopt following technical measures further to realize.
Aforesaid method during the joint face of wherein said steps d steel column assembling is straight, is selected phase proximal end face height during the post beam butt joint of the steel platform of being made by rolled section steel, in order to avoid the control misalignment.
Aforesaid method, during the joint face of wherein said steps d steel column assembling was straight, smoothing was to eliminate stress on levelling machine before assembling for the cover plate of steel platform, and the stress after the minimizing welding is concentrated and is caused distortion.
Aforesaid method during the joint face of wherein said steps d steel column assembling is straight, to steel platform surface part plan degree finished product timing, is carried out flame correction with the form of roasting plum blossom point.
After adopting technique scheme, benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method of the present invention has the following advantages:
1, making step is reasonable in design, simple to operate;
2, workmanship is safe and reliable;
3, reduce engineering cost.
The specific embodiment
Below further specify the present invention through specific embodiment.
Embodiment 1
Benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method of the present invention is characterized in that may further comprise the steps:
A, component processing utilize threedimensional model and other computer software to carry out the accurate setting-out of size, fully carry out rational surplus according to specification, the size of welding method, welding sequence, welding point form and part and reserve; Batching should be followed first main part; Rear attachment, order is from big to small carried out discharge, fully rationally utilizes material; Span, deadweight requirement according to construction drawing and beam; Preparatory arch camber is set on the web of beam, and the camber line arch camber is taked in arch camber in advance, to guarantee the acceptance requirement of final beam camber;
B, setting-out, line, cutting and drilling, number material pronucleus is to steel specification, material, and the check surface quality of steel, and is uneven as finding steel; Dirts such as corrosion, paint are arranged, correct after the cleaning number material again, number material will leave the cutting surplus, and the dirt removal with steel cutting area surface before the cutting is clean; Slag and splash are removed in cutting back, and it is steady that steel plate is set level pad, leave the space below the slot; Bull bar straightener cutting in the blanking of vertical bar plate, numerical control cutting machine in the arc plate blanking, diaphragm and endoporus thereof adopt NC flame cutting; To guarantee cutting accuracy, prevent breach during cutting, the part edge of main bearing member does not allow breach; The part edge breach of general member is not more than 2mm, and excessive defect carries out repair welding and polishes smooth, otherwise inaccurate inflow next procedure; Steel column and beam connecting hole and crane girder and automatically the plate connecting hole by three-dimension numerical controlled drilling machine drilling, the crane girder end plate be connected plate hole by the numerical control plane drill press drilling, the bolt hole of processing is a right cylindrical; And perpendicular to the steel surface of position; Gradient is less than 1/20, and the no burr of its hole periphery breaks; Horn mouth or concavo-convex vestige, smear metal is removed clean; The number of degrees of groove of connecting material are controlled in the setting ± 5 ° scope;
The rectification of c, component is that gagging and flame straightening are heat straightening to the part of the distortion after shearing or the flame cutting, bending and the part employing machinery rectification that the flexural deformation meeting of preceding road influences the next procedure quality; The attachments such as slag of cleaning steel surface before machinery is corrected, anti-mouthful of equating of shearing prevents when machinery overstocks, to be absorbed in the steel; Form pockmark, structural carbon steel and low-alloy structural steel are when heat straightening, and heating-up temperature is no more than 900 ℃; Low-alloy structural steel is cooling naturally after adding heat straightening, reduce to room temperature before, must not hammering steel material and water quenching; Cold slowly afterburning when strong, room temperature should not be lower than-5 ℃, and cold strong total deformation rate must not must not coldly be rectified greater than the pulling force rod member that 2% o'clock impact value does not meet the demands; Steel surface after the rectification does not have tangible indenture or damage, and scratch depth is not more than 0.5mm, and is not more than 1/2 of the negative allowable variation of steel plate thickness;
D, steel column assembling, steel column is assembled on the steel mould base of lining, and the post bottom surface is welded allowance for shrinkage to platform bracket supporting surface apart from reserving, and the datum of steel column assembling is gone up the plane with the support of shaft axis peace dummy cow leg and is as the criterion; Bearing diagonal is as the criterion with meld line, carries out reinforcement measure before the welding when steel column platform bracket is longer, prevents welding deformation, when bracket and steel column welding; The top flange weld seam belongs to the tensile region, the weld seam through welding, and do ultrasonic testing/ ultrasonic examination; Joint face is straight, edges of boards, and the Kong Bianwu burr is to guarantee the closely connected contact of rubbing surface; Rubbing surface must not have iron oxide, paint, greasy dirt and earth; The post beam of said steel platform is a rolled section steel, and the end face height of rolled section steel often has positive and negative deviation, will select phase proximal end face height during its butt joint, in order to avoid the control misalignment; Smoothing is to eliminate stress on levelling machine before assembling for the cover plate of steel platform, and the stress after the minimizing welding is concentrated and caused distortion; To steel platform surface part plan degree finished product timing, carry out flame correction with the form of roasting plum blossom point.
E, steel work welding, wherein:
The manual electric arc welding welding condition is seen table 1;
Table 1 manual electric arc welding welding condition
The welding technique of submerged arc welding parameter is seen table 2;
Table 2 welding technique of submerged arc welding parameter
Ar-CO
2The gas shielded arc welding welding condition is seen table 3;
Table 3Ar-CO
2The gas shielded arc welding welding condition
F, steel work application, steel column, crane girder, the application of roof girder steel construction piece, wherein: steel work priming paint uses aqueous inorganic spelter coating, application twice, its build 100 μ m; The transition zone lacquer uses epoxy to connect lacquer, build 25 μ m; Intermediate coat uses coating in the epoxy micaceous iron, build 30 μ m; But finish paint uses overcoating polyurethane finish, application twice, its build 30 μ m; Airless spraying is adopted in application; The precoating of edge and sectional repair can adopt spread coating and roll coating process; All members all spray priming paint before dispatching from the factory, must not be greater than 3 hours to priming paint spray time interval after derusting by sandblasting is accomplished.
Above embodiment only supplies to explain the present invention's usefulness, but not limitation of the present invention, the technician in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
Claims (4)
1. benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method is characterized in that may further comprise the steps:
A,, utilize threedimensional model and other computer software to carry out the accurate setting-out of size, fully carry out rational surplus and reserve according to specification, the size of welding method, welding sequence, welding point form and part; Batching should be followed first main part, rear attachment, and order is from big to small carried out discharge; Fully rationally utilize material, span, deadweight requirement according to construction drawing and beam are provided with preparatory arch camber on the web of beam; The camber line arch camber is taked in arch camber in advance, to guarantee the acceptance requirement of final beam camber;
B, setting-out, line, cutting and drilling, number material pronucleus is to steel specification, material, and the check surface quality of steel, and is uneven as finding steel; Dirts such as corrosion, paint are arranged, correct after the cleaning number material again, number material will leave the cutting surplus, and the dirt removal with steel cutting area surface before the cutting is clean; Slag and splash are removed in cutting back, and it is steady that steel plate is set level pad, leave the space below the slot; Bull bar straightener cutting in the blanking of vertical bar plate, numerical control cutting machine in the arc plate blanking, diaphragm and endoporus thereof adopt NC flame cutting; To guarantee cutting accuracy, prevent breach during cutting, the part edge of main bearing member does not allow breach; The part edge breach of general member is not more than 2mm, and excessive defect carries out repair welding and polishes smooth, otherwise inaccurate inflow next procedure; Steel column and beam connecting hole and crane girder and automatically the plate connecting hole by three-dimension numerical controlled drilling machine drilling, the crane girder end plate be connected plate hole by the numerical control plane drill press drilling, the bolt hole of processing is a right cylindrical; And perpendicular to the steel surface of position; Gradient is less than 1/20, and the no burr of its hole periphery breaks; Horn mouth or concavo-convex vestige, smear metal is removed clean; The number of degrees of groove of connecting material are controlled in the setting ± 5 ° scope;
The rectification of c, component is that gagging and flame straightening are heat straightening to the part of the distortion after shearing or the flame cutting, bending and the part employing machinery rectification that the flexural deformation meeting of preceding road influences the next procedure quality; The attachments such as slag of cleaning steel surface before machinery is corrected, anti-mouthful of equating of shearing prevents when machinery overstocks, to be absorbed in the steel; Form pockmark, structural carbon steel and low-alloy structural steel are when heat straightening, and heating-up temperature is no more than 900 ℃; Low-alloy structural steel is cooling naturally after adding heat straightening, reduce to room temperature before, must not hammering steel material and water quenching; Cold slowly afterburning when strong, room temperature should not be lower than-5 ℃, and cold strong total deformation rate must not must not coldly be rectified greater than the pulling force rod member that 2% o'clock impact value does not meet the demands; Steel surface after the rectification does not have tangible indenture or damage, and scratch depth is not more than 0.5mm, and is not more than 1/2 of the negative allowable variation of steel plate thickness;
D, steel column assembling, steel column is assembled on the steel mould base of lining, and the post bottom surface is welded allowance for shrinkage to platform bracket supporting surface apart from reserving, and the datum of steel column assembling is gone up the plane with the support of shaft axis peace dummy cow leg and is as the criterion; Bearing diagonal is as the criterion with meld line, carries out reinforcement measure before the welding when steel column platform bracket is longer, prevents welding deformation, when bracket and steel column welding; The top flange weld seam belongs to the tensile region, the weld seam through welding, and do ultrasonic testing/ ultrasonic examination; Joint face is straight, edges of boards, and the Kong Bianwu burr is to guarantee the closely connected contact of rubbing surface; Rubbing surface must not have iron oxide, paint, greasy dirt and earth;
E, steel work welding, wherein:
Manual electric arc welding welding condition:
The welding technique of submerged arc welding parameter:
Ar-CO
2The gas shielded arc welding welding condition:
F, steel work application, steel column, crane girder, the application of roof girder steel construction piece, wherein: steel work priming paint uses aqueous inorganic spelter coating, application twice, its build 100 μ m; The transition zone lacquer uses epoxy to connect lacquer, build 25 μ m; Intermediate coat uses coating in the epoxy micaceous iron, build 30 μ m; But finish paint uses overcoating polyurethane finish, application twice, its build 30 μ m; Airless spraying is adopted in application; The precoating of edge and sectional repair can adopt spread coating and roll coating process; All members all spray priming paint before dispatching from the factory, must not be greater than 3 hours to priming paint spray time interval after derusting by sandblasting is accomplished.
2. benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method as claimed in claim 1; It is characterized in that; During the joint face of said steps d steel column assembling is straight, select phase proximal end face height during the post beam butt joint of the steel platform of making by rolled section steel, in order to avoid the control misalignment.
3. benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method as claimed in claim 1; It is characterized in that; During the joint face of said steps d steel column assembling was straight, smoothing was to eliminate stress on levelling machine before assembling for the cover plate of steel platform, and the stress after the minimizing welding is concentrated and caused distortion.
4. benzene hydrogenation engineering benzene hydrogenation master device steel structure frame preparation method as claimed in claim 1; It is characterized in that; During the joint face of said steps d steel column assembling is straight,, carry out flame correction with the form of roasting plum blossom point to steel platform surface part plan degree finished product timing.
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| CN103481022A (en) * | 2013-08-20 | 2014-01-01 | 合肥万众交通工程有限公司 | Manufacturing method of pier column template |
| CN103567709A (en) * | 2012-07-25 | 2014-02-12 | 昆山荣科钣金科技有限公司 | High-precision testing device frame manufacturing process |
| CN103801911A (en) * | 2014-02-26 | 2014-05-21 | 宁波万金现代钣金有限公司 | Method for processing table frame of operating table |
| CN106475700A (en) * | 2016-12-23 | 2017-03-08 | 中国二冶集团有限公司 | A kind of manufacture method of fusiformis roof girder |
| CN108930366A (en) * | 2017-05-27 | 2018-12-04 | 北京智慧云建科技有限公司 | A kind of steel reinforced concrete abnormity overlapping sheet-pile production technology |
| CN108930362A (en) * | 2017-05-27 | 2018-12-04 | 北京智慧云建科技有限公司 | A kind of steel reinforced concrete abnormity sheet-pile production technology |
| CN109079438A (en) * | 2018-08-17 | 2018-12-25 | 云南宏盛铁塔实业有限公司 | A kind of steel structure processing technology |
| CN109822303A (en) * | 2019-01-17 | 2019-05-31 | 宁波晨旭建筑科技有限公司 | A kind of PC mold technological process of production |
| CN110480283A (en) * | 2019-09-17 | 2019-11-22 | 福建天安建筑钢铁制品有限公司 | A kind of production technology of high usage, precision steel structures |
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| CN103567709A (en) * | 2012-07-25 | 2014-02-12 | 昆山荣科钣金科技有限公司 | High-precision testing device frame manufacturing process |
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| CN109822303A (en) * | 2019-01-17 | 2019-05-31 | 宁波晨旭建筑科技有限公司 | A kind of PC mold technological process of production |
| CN110480283A (en) * | 2019-09-17 | 2019-11-22 | 福建天安建筑钢铁制品有限公司 | A kind of production technology of high usage, precision steel structures |
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