CN105463322A - Novel H steel and method for symmetry welding of H steel - Google Patents
Novel H steel and method for symmetry welding of H steel Download PDFInfo
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- CN105463322A CN105463322A CN201510907365.7A CN201510907365A CN105463322A CN 105463322 A CN105463322 A CN 105463322A CN 201510907365 A CN201510907365 A CN 201510907365A CN 105463322 A CN105463322 A CN 105463322A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention provides H steel. The H steel comprises a left side wing steel plate, a right side wing steel plate and a web steel plate. Steel adopted in each steel plate is prepared from, by weight percentage, 0.08-0.16 % of C, 0.68-0.75 % of Cr, 0.017-0.025 % of Nb, 0.29-0.32 % of Si, 1.25-1.30 % of Mn, 0.027-0.032 % of Ti, 0.28-0.31 % of Ni, 0.03-0.06 % of V, 0.02-0.04 % of N, 0.005-0.008 % of S, 0.013-0.018 % of P, 0.21-0.25 % of Cu and the balance Fe. The H steel is good in corrosion prevention effect and excellent in strength performance and vibration resistance, the adopted welding process can achieve better symmetry welding, and deformation is prevented.
Description
Technical field
The present invention relates to metallurgical technology field, particularly relate to a kind of novel H steel and be symmetrically welded the method for H steel.
Background technology
Along with the fast development of real estate industry of China, nigh-level synthesis thing all proposes new requirement to the H steel plate for making the structural part such as post, beam in intensity, fire resistance, corrosion resistance nature, anti-seismic performance etc.Use high strength steel grade can perfect frame hardness of steel grade, avoid in following process, welding process, producing quality problems because thickness of steel product is excessive, also can alleviate structural weight simultaneously, reduce laid down cost, reduce steel wastage, improve reliability of structure.On the other hand, use fire resistant excellent property, excellent earthquake resistance (i.e. low yield strength ratio) steel, the damage because the factor such as fire, earthquake causes structure can be reduced, extend personnel's evacuation time, reduce life and property loss, increase building safety use properties.
H steel is the one in construction steel structure, and being has three rectangle steel plate groups to stand to form, and is mainly used in the building trades such as factory building, high level, boiler, power plant.In three block plates of H steel, upper and lower two block plates are parallel to each other, and one piece of middle riser vertically stands between upper and lower two block plates, and vertical with upper and lower two block plates, form four weld seams to be welded between the lower edges of riser and upper and lower two block plates.
The topmost problem of welded H steel is welding distortion.The basic reason producing welding distortion is the ununiformity of welding thermal field, and in high-temperature soldering, district creates compressive plastic deformation, and this district of postwelding will shrink, and other position stops it to shrink, and thus produces welding residual stress and distortion.Due to the not equal factor of welded weld seam distribution, shrinkage strain, deflection deformation, angular distortion, wave transformation etc. can be produced.Main generation deflection deformation and angular distortion in large-scale H steel construction.
In addition, the steel heat zone of influence microstructure and property change of unlike material is more responsive to thermal weld stress, heat affected zone tendency of hardenability is large, therefore, a kind of suitable weldprocedure must be selected, and strict its welding process of control, to obtain the higher welding joint of a kind of comprehensive mechanical property, steel plate provided by the invention has special strength property and anti-seismic performance due to the change of material, therefore needs the appropriate weldprocedure matched with it, thus forms firm H steel.
For a long time in order to reduce the loss of corroding in the use procedure of H steel, people take a lot of measure, as the electrochemical protection method, corrosive medium facture, tectum protection method etc. of metal.But sfgd. general, most economical, the most practical up to now or coating protection, anticorrosion with coat with its easy construction, economic and practical, not by device area, shape constraint and there is the features such as certain decorative effect and be widely used.
For solving the problems of the technologies described above, the invention provides a kind of novel H steel and be symmetrically welded method, it can have good anticorrosion ability, strength property and excellent earthquake resistance, and adopt the weldprocedure of giving can realize better being symmetrically welded, prevent distortion.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of novel H steel and is symmetrically welded method, it can have good anticorrosion ability, strength property and excellent earthquake resistance, and adopt the weldprocedure of giving can realize better being symmetrically welded, prevent distortion.
For solving the problems of the technologies described above, the invention provides a kind of H steel, it comprises left side flap steel plate, right side flap steel plate and abdomen steel plate, the steel that each steel plate adopts comprise the composition of following mass percent: C:0.08-0.16wt%, Cr:0.68-0.75wt%, Nb:0.017-0.025wt%, Si:0.29-0.32wt%, Mn:1.25-1.30wt%, Ti:0.027-0.032wt%, Ni0.28-0.31wt%, V:0.03-0.06wt%, N:0.02-0.04wt%, S:0.005-0.008wt%, P:0.013-0.018wt%, Cu:0.21-0.25wt%, surplus is Fe,
The preparation method of described steel plate is specially,
The first step, the pig iron added drop in stove and melt, carry out desulfurization, deoxidation, carry out refining;
Second step, puts in the refined products in the first step by Si, Mn;
3rd step, puts in the refined products in the first step after half an hour by Cr, Ni;
4th step, adds in the refined products of the first step by remaining alloying constituent after half an hour;
5th step, add in the product of the 4th step melt with the scrap iron of the weight such as the pig iron, refining refining again;
6th step, by the 5th step product first by room temperature with 180-190 DEG C/h of ramp to 640-650 DEG C, insulation 50-60 minute, then be cooled to 510-520 DEG C with 130-140 DEG C/h of speed, again with 220-230 DEG C/h of ramp to 950-960 DEG C, insulation 4-5 hour; 580-600 DEG C is cooled to again with 150-160 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 720-730 DEG C, then be cooled to 550-560 DEG C with 100-120 DEG C/h of speed, insulation 50-70 minute; Be cooled to 300-310 DEG C with 90-110 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product; .
Each steel plate is symmetrically welded the method forming H steel and comprises,
A walks, preheating, and the wing plate and web plate joint that apply the H steel before welding are carried out weld preheating, and preheating temperature is 200 DEG C-230 DEG C, prevents pore and crackle;
B walks, grooves of welding joints shaping, and welding junction is arranged to double V-groove, and angle is 80 DEG C, adopts planer finished edge with the welding distortion avoiding flame cutting to bring and slope surface oxidation, quench-hardened case;
C walks, the cleaning of grooves of welding joints, removes clean before weldering by the oil of butting grooves edge 30 ~ 50mm rust water, polish subsequently, make its visible metalluster, can the comparatively responsive magazine such as wipe oil, elegant water by cleaning, prevent interface from producing pore and splashing defect;
D walks, two blocks of wing plates and one block of web are arranged on securing supports, web on strut member is 20 DEG C ~ 30 DEG C relative to the angle of level ground, two blocks of wing plates on strut member are positioned at the both sides of web, vertical with web, erection stress reinforcement plate on two blocks of wing plates, be connected square position place at wing plate with web and triangle stress plate is installed, stress reinforcement plate and triangle stress plate all fix by stationary installation, assembly stress is defined in the both sides of wing plate by stress reinforcement plate and triangle stress plate, this stress is contrary with welding interior stress direction, thus realize being symmetrically welded, reduce welding stress and distortion,
E walks, and is arranged on by welding wire in wire feeding machine;
F walks, and uses wire feeding machine wire feed, adopts semi-automatic CO
2the method that shielded welding carries out one side welding with back formation is welded, first web is welded, then left wing plate is welded, finally weld right wing plate, during welding, electric arc adopts zig-zag or positive crescent to swing up and down, have a break when being rocked to upper and lower groove both sides, dead time is wanted suitably, burn or overlap to prevent the too high generation of groove Yin Wendu, groove temperature is low there is groove, when being welded to web and wing plate infall, note electric arc to stretch inward as far as possible, prevent infall weld seam from occurring dead angle, easy generation incomplete fusion defect, by impurity physical removals such as welding slags after having welded,
G walks, and after welding, removes the stationary installation of stress reinforcement plate and triangle stress plate, removes stress reinforcement plate and triangle stress plate, thus realizes being symmetrically welded H steel;
H walks, and is coated to by anticorrosive coating on H steel, obtains product;
The raw material of described anticorrosive coating comprises resol, epoxy resin, carbon black, ethylene glycol phenyl ether, hydroxypropyl-beta-cyclodextrin, N-Methyl pyrrolidone, tetramethylolmethane, polyvinyl butyral acetal, nano silicon, polymethacrylate resin, attapulgite and polydimethylsiloxane.
Wherein, in described coating, the weight part of each raw material is respectively resol 35 weight part ~ 45 weight part, epoxy resin 20 weight part ~ 30 weight part, carbon black 2 weight part ~ 5 weight part, ethylene glycol phenyl ether 5 weight part ~ 8 weight part, hydroxypropyl-beta-cyclodextrin 5 weight part ~ 9 weight part, N-Methyl pyrrolidone 3 weight part ~ 6 weight part, tetramethylolmethane 2 weight part ~ 5 weight part, polyvinyl butyral acetal 8 weight part ~ 12 weight part, nano silicon 1 weight part ~ 3 weight part, polymethacrylate resin 5 weight part ~ 10 weight part, attapulgite 1 weight part ~ 3 weight part and polydimethylsiloxane 0.5 weight part ~ 1.5 weight part.
Wherein, in described coating, the weight part of each raw material is respectively resol 40 weight part, epoxy resin 25 weight part, carbon black 3 weight part, ethylene glycol phenyl ether 6 weight part, hydroxypropyl-beta-cyclodextrin 8 weight part, N-Methyl pyrrolidone 5 weight part, tetramethylolmethane 3 weight part, polyvinyl butyral acetal 10 weight part, nano silicon 2 weight part, polymethacrylate resin 8 weight part, attapulgite 2 weight part and polydimethylsiloxane 1 weight part.
The preparation method of described coating, it comprises:
The first step, takes resol, epoxy resin, polymethacrylate resin according to above-mentioned weight, and is placed in mixing machine and stirs 10-20 minute at normal temperatures and pressures with the speed of 500-700 rev/min;
Second step, evenly adds ethylene glycol phenyl ether, polyvinyl butyral acetal, hydroxypropyl-beta-cyclodextrin and N-Methyl pyrrolidone by above-mentioned weight part in the mixture of the first step, stirs 15-30 minute at normal temperatures and pressures the speed of 200-500 rev/min;
3rd step, keeps the mixture of second step to be in the whipped state of 800-1000 rev/min, and evenly adds remaining feed composition by weight in the mixture, stir 20-30 minute at normal temperatures and pressures;
4th step, stirs the 3rd step with the speed of 1100-1300 rev/min at normal temperatures and pressures further and obtains mixture, evenly namely obtain required coating to whole system.
Beneficial effect of the present invention:
The invention provides a kind of novel H steel and be symmetrically welded method, it can have good anticorrosion ability, strength property and excellent earthquake resistance, and adopts the weldprocedure of giving can realize better being symmetrically welded, and prevents distortion.
Embodiment
The invention provides a kind of above-mentioned H steel and be symmetrically welded method, it comprises:
The first step, preheating, the wing plate and web plate joint that apply the H steel before welding are carried out weld preheating, and preheating temperature is 200 DEG C-230 DEG C, prevents pore and crackle;
Second step, grooves of welding joints shaping, welding junction is arranged to double V-groove, and angle is 80 DEG C, adopts planer finished edge with the welding distortion avoiding flame cutting to bring and slope surface oxidation, quench-hardened case;
3rd step, the cleaning of grooves of welding joints, removes clean by the oil of butting grooves edge 30 ~ 50mm rust water before weldering, polish subsequently, make its visible metalluster, can the comparatively responsive magazine such as wipe oil, elegant water by cleaning, prevent interface from producing pore and splashing defect;
4th step, two blocks of wing plates and one block of web are arranged on securing supports, web on strut member is 20 DEG C ~ 30 DEG C relative to the angle of level ground, two blocks of wing plates on strut member are positioned at the both sides of web, vertical with web, erection stress reinforcement plate on two blocks of wing plates, be connected square position place at wing plate with web and triangle stress plate is installed, stress reinforcement plate and triangle stress plate all fix by stationary installation, assembly stress is defined in the both sides of wing plate by stress reinforcement plate and triangle stress plate, this stress is contrary with welding interior stress direction, thus realize being symmetrically welded, reduce welding stress and distortion,
5th step, is arranged on welding wire in wire feeding machine;
6th step, uses wire feeding machine wire feed, adopts semi-automatic CO
2the method that shielded welding carries out one side welding with back formation is welded, first web is welded, then left wing plate is welded, finally weld right wing plate, during welding, electric arc adopts zig-zag or positive crescent to swing up and down, have a break when being rocked to upper and lower groove both sides, dead time is wanted suitably, burn or overlap to prevent the too high generation of groove Yin Wendu, groove temperature is low there is groove, when being welded to web and wing plate infall, note electric arc to stretch inward as far as possible, prevent infall weld seam from occurring dead angle, easy generation incomplete fusion defect, by impurity physical removals such as welding slags after having welded,
7th step, after welding, removes the stationary installation of stress reinforcement plate and triangle stress plate, removes stress reinforcement plate and triangle stress plate, thus realizes being symmetrically welded H steel.
The steel that described H steel adopts comprise the composition of following mass percent: C:0.08-0.16wt%, Cr:0.68-0.75wt%, Nb:0.017-0.025wt%, Si:0.29-0.32wt%, Mn:1.25-1.30wt%, Ti:0.027-0.032wt%, Ni0.28-0.31wt%, V:0.03-0.06wt%, N:0.02-0.04wt%, S:0.005-0.008wt%, P:0.013-0.018wt%, Cu:0.21-0.25wt%, surplus is Fe.
The preparation method of the steel that described H steel adopts is specially:
The first step, the pig iron added drop in stove and melt, carry out desulfurization, deoxidation, carry out refining;
Second step, puts in the refined products in the first step by Si, Mn;
3rd step, puts in the refined products in the first step after half an hour by Cr, Ni;
4th step, adds in the refined products of the first step by remaining alloying constituent after half an hour;
5th step, add in the product of the 4th step melt with the scrap iron of the weight such as the pig iron, refining refining again;
6th step, by the 5th step product first by room temperature with 180-190 DEG C/h of ramp to 640-650 DEG C, insulation 50-60 minute, then be cooled to 510-520 DEG C with 130-140 DEG C/h of speed, again with 220-230 DEG C/h of ramp to 950-960 DEG C, insulation 4-5 hour; 580-600 DEG C is cooled to again with 150-160 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 720-730 DEG C, then be cooled to 550-560 DEG C with 100-120 DEG C/h of speed, insulation 50-70 minute; Be cooled to 300-310 DEG C with 90-110 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.
Present invention also offers the coating being coated in above-mentioned H steel, it comprises resol, epoxy resin, carbon black, ethylene glycol phenyl ether, hydroxypropyl-beta-cyclodextrin, N-Methyl pyrrolidone, tetramethylolmethane, polyvinyl butyral acetal, nano silicon, polymethacrylate resin, attapulgite and polydimethylsiloxane.
In described coating, the weight part of each raw material is respectively resol 35 weight part ~ 45 weight part, epoxy resin 20 weight part ~ 30 weight part, carbon black 2 weight part ~ 5 weight part, ethylene glycol phenyl ether 5 weight part ~ 8 weight part, hydroxypropyl-beta-cyclodextrin 5 weight part ~ 9 weight part, N-Methyl pyrrolidone 3 weight part ~ 6 weight part, tetramethylolmethane 2 weight part ~ 5 weight part, polyvinyl butyral acetal 8 weight part ~ 12 weight part, nano silicon 1 weight part ~ 3 weight part, polymethacrylate resin 5 weight part ~ 10 weight part, attapulgite 1 weight part ~ 3 weight part and polydimethylsiloxane 0.5 weight part ~ 1.5 weight part.
Further preferably, in described coating, the weight part of each raw material is respectively resol 40 weight part, epoxy resin 25 weight part, carbon black 3 weight part, ethylene glycol phenyl ether 6 weight part, hydroxypropyl-beta-cyclodextrin 8 weight part, N-Methyl pyrrolidone 5 weight part, tetramethylolmethane 3 weight part, polyvinyl butyral acetal 10 weight part, nano silicon 2 weight part, polymethacrylate resin 8 weight part, attapulgite 2 weight part and polydimethylsiloxane 1 weight part.
Present invention also offers the preparation method of above-mentioned coating, it comprises:
The first step, takes resol, epoxy resin, polymethacrylate resin according to above-mentioned weight, and is placed in mixing machine and stirs 10-20 minute at normal temperatures and pressures with the speed of 500-700 rev/min;
Second step, evenly adds ethylene glycol phenyl ether, polyvinyl butyral acetal, hydroxypropyl-beta-cyclodextrin and N-Methyl pyrrolidone by above-mentioned weight part in the mixture of the first step, stirs 15-30 minute at normal temperatures and pressures the speed of 200-500 rev/min;
3rd step, keeps the mixture of second step to be in the whipped state of 800-1000 rev/min, and evenly adds remaining feed composition by weight in the mixture, stir 20-30 minute at normal temperatures and pressures;
4th step, stirs the 3rd step with the speed of 1100-1300 rev/min at normal temperatures and pressures further and obtains mixture, evenly namely obtain required coating to whole system.
On the wing plate steel that prepared coating is ejected into H steel by the present invention and web steel, then carry out welding and can obtain H steel.
Below adopt embodiment to describe embodiments of the present invention in detail, to the present invention, how utilisation technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.
The preparation of embodiment 1 steel plate
The pig iron is added drop in stove and melt, carry out desulfurization, deoxidation, carry out refining, by Si, Mn puts in refined products above, by Cr after half an hour, Ni puts in the refined products in the first step, after half an hour, remaining alloying constituent is added in refined products above, add subsequently and melt with the scrap iron of the weight such as the pig iron, refining refining again, subsequently first by room temperature with 180-190 DEG C/h of ramp to 640-650 DEG C, insulation 50-60 minute, 510-520 DEG C is cooled to again with 130-140 DEG C/h of speed, again with 220-230 DEG C/h of ramp to 950-960 DEG C, insulation 4-5 hour, 580-600 DEG C is cooled to again with 150-160 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 720-730 DEG C, then be cooled to 550-560 DEG C with 100-120 DEG C/h of speed, insulation 50-70 minute, be cooled to 300-310 DEG C with 90-110 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.
After testing, the chemical composition in steel except principal constituent Fe is (%)
Embodiment 2 coating
Take resol 40g, epoxy resin 25g, polymethacrylate resin 8g, and be placed in mixing machine and stir 20 minutes at normal temperatures and pressures with the speed of 600 revs/min, ethylene glycol phenyl ether 6g is evenly added in the mixture obtained above, polyvinyl butyral acetal 10g, hydroxypropyl-beta-cyclodextrin 8g and N-Methyl pyrrolidone 5g, 30 minutes are stirred at normal temperatures and pressures the speed of 300 revs/min, the mixture obtained is kept to be in the whipped state of 1000 revs/min, and evenly add carbon black 3g in the mixture, tetramethylolmethane 3g, nano silicon 2g, attapulgite 2g and polydimethylsiloxane 1g, stir 30 minutes at normal temperatures and pressures, stir with the speed of 1200 revs/min at normal temperatures and pressures subsequently and obtain mixture, evenly required coating is namely obtained to whole system.
The preparation of embodiment 3H steel
The wing plate and web plate joint that apply the H steel before welding are carried out weld preheating, preheating temperature is 200 DEG C, prevent pore and crackle, welding junction is arranged to double V-groove, angle is 80 DEG C, adopt planer finished edge with the welding distortion avoiding flame cutting to bring and slope surface oxidation, quench-hardened case, the cleaning of grooves of welding joints, before weldering, the oil of butting grooves edge 50mm rust water is removed clean, polish subsequently, make its visible metalluster, can wipe oil by cleaning, the magazine that elegant water etc. are comparatively responsive, prevent interface from producing pore and splashing defect, two blocks of wing plates and one block of web are arranged on securing supports, web on strut member is 30 DEG C relative to the angle of level ground, two blocks of wing plates on strut member are positioned at the both sides of web, vertical with web, erection stress reinforcement plate on two blocks of wing plates, be connected square position place at wing plate with web and triangle stress plate is installed, stress reinforcement plate and triangle stress plate all fix by stationary installation, assembly stress is defined in the both sides of wing plate by stress reinforcement plate and triangle stress plate, this stress is contrary with welding interior stress direction, thus realize being symmetrically welded, reduce welding stress and distortion, welding wire is arranged in wire feeding machine, use wire feeding machine wire feed, adopt semi-automatic CO
2the method that shielded welding carries out one side welding with back formation is welded, first web is welded, then left wing plate is welded, finally weld right wing plate, during welding, electric arc adopts zig-zag or positive crescent to swing up and down, have a break when being rocked to upper and lower groove both sides, dead time is wanted suitably, burn or overlap to prevent the too high generation of groove Yin Wendu, groove temperature is low there is groove, when being welded to web and wing plate infall, note electric arc to stretch inward as far as possible, prevent infall weld seam from occurring dead angle, easy generation incomplete fusion defect, by impurity physical removals such as welding slags after having welded, after welding, remove the stationary installation of stress reinforcement plate and triangle stress plate, remove stress reinforcement plate and triangle stress plate, thus realize being symmetrically welded H steel, paint spay-coating embodiment 2 prepared subsequently is on this H steel thus obtain novel H steel.
Embodiment 4H Steel Properties is tested
4.1 outward appearance test and Mechanics Performance Testings
According to welding joint examination criteria, first carry out weld shape detection, weld face becomes the fish scale-shaped ripple of rule, does not have undercut, crackle and pore etc.Carry out radiographic test detection by JB/T4730.2-2005 " bearing device nondestructive testing ", result is that I level is qualified.
Tension test is tested according to GB/T2651-2008 " welding joint stretching test method ", and test-results is in table 1.The fracture of tension test is all away from fusion area, and this illustrates that welding joint belongs to equal strength matched junction substantially, and from intensity angle, the structure and properties of fusion area is qualified, and the welding joint tensile property namely adopting this weldprocedure to weld meets design requirement.
The tension test of table 1 welding joint
The sample of Charpy impact test is longitudinal intercepting, size of sample 10mm × 5mm × 55mm, test temperature 20 DEG C, concrete test-results is in table 2, can be found out by table 2, the ballistic work measured value of this test is all greater than standard-required value, shows the impelling strength that whole welding joint is good.
Table 2 Charpy impact test result
Erosion resistance evaluation method
The size of welding metal length 20mm, length 40mm is cut into from the H steel after embodiment 4 applies coating.Cut off end face and implement sand paper wet grinding process, put into experimental liquid subsequently, experimental liquid is set to 600ppmCl
-, 20ppmCu
2+composition, at 80 DEG C, is blown into oxygen and continuous impregnating 2 weeks.The crevice corrosion degree of depth uses depth of focus method to measure.In addition, for interstitial structure material, by incision welding metal portion, opening clearance portion measures the corrosion in gap, the results are shown in Table 3.
As a comparison, the steel plate that another cutting is identical, difference is the coating not applying embodiment 2 preparation.
Table 3 erosion resistance compares
Adopt the steel plate in traditional Q235B carbon steel steel plate and the embodiment of the present invention 1 to carry out performance, both are measure-alike.
The comparison of table 4 plate property
All above-mentioned this intellecture properties of primary enforcement, not setting restriction this product innovation of other forms of enforcement and/or novel method.Those skilled in the art will utilize this important information, and foregoing is revised, to realize similar implementation status.But all modifications or transformation belong to the right of reservation based on product innovation of the present invention.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (4)
1. a H steel, it is characterized in that: comprise left side flap steel plate, right side flap steel plate and abdomen steel plate, the steel that each steel plate adopts comprise the composition of following mass percent: C:0.08-0.16wt%, Cr:0.68-0.75wt%, Nb:0.017-0.025wt%, Si:0.29-0.32wt%, Mn:1.25-1.30wt%, Ti:0.027-0.032wt%, Ni0.28-0.31wt%, V:0.03-0.06wt%, N:0.02-0.04wt%, S:0.005-0.008wt%, P:0.013-0.018wt%, Cu:0.21-0.25wt%, surplus is Fe;
The preparation method of described steel plate is specially,
The first step, the pig iron added drop in stove and melt, carry out desulfurization, deoxidation, carry out refining;
Second step, puts in the refined products in the first step by Si, Mn;
3rd step, puts in the refined products in the first step after half an hour by Cr, Ni;
4th step, adds in the refined products of the first step by remaining alloying constituent after half an hour;
5th step, add in the product of the 4th step melt with the scrap iron of the weight such as the pig iron, refining refining again;
6th step, by the 5th step product first by room temperature with 180-190 DEG C/h of ramp to 640-650 DEG C, insulation 50-60 minute, then be cooled to 510-520 DEG C with 130-140 DEG C/h of speed, again with 220-230 DEG C/h of ramp to 950-960 DEG C, insulation 4-5 hour; 580-600 DEG C is cooled to again with 150-160 DEG C/h of speed, then with 170-190 DEG C/h of ramp to 720-730 DEG C, then be cooled to 550-560 DEG C with 100-120 DEG C/h of speed, insulation 50-70 minute; Be cooled to 300-310 DEG C with 90-110 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product;
Each steel plate is symmetrically welded the method forming H steel and comprises,
A walks, preheating, and the wing plate and web plate joint that apply the H steel before welding are carried out weld preheating, and preheating temperature is 200 DEG C-230 DEG C, prevents pore and crackle;
B walks, grooves of welding joints shaping, and welding junction is arranged to double V-groove, and angle is 80 DEG C, adopts planer finished edge with the welding distortion avoiding flame cutting to bring and slope surface oxidation, quench-hardened case;
C walks, the cleaning of grooves of welding joints, removes clean before weldering by the oil of butting grooves edge 30 ~ 50mm rust water, polish subsequently, make its visible metalluster, can the comparatively responsive magazine such as wipe oil, elegant water by cleaning, prevent interface from producing pore and splashing defect;
D walks, two blocks of wing plates and one block of web are arranged on securing supports, web on strut member is 20 DEG C ~ 30 DEG C relative to the angle of level ground, two blocks of wing plates on strut member are positioned at the both sides of web, vertical with web, erection stress reinforcement plate on two blocks of wing plates, be connected square position place at wing plate with web and triangle stress plate is installed, stress reinforcement plate and triangle stress plate all fix by stationary installation, assembly stress is defined in the both sides of wing plate by stress reinforcement plate and triangle stress plate, this stress is contrary with welding interior stress direction, thus realize being symmetrically welded, reduce welding stress and distortion,
E walks, and is arranged on by welding wire in wire feeding machine;
F walks, and uses wire feeding machine wire feed, adopts semi-automatic CO
2the method that shielded welding carries out one side welding with back formation is welded, first web is welded, then left wing plate is welded, finally weld right wing plate, during welding, electric arc adopts zig-zag or positive crescent to swing up and down, have a break when being rocked to upper and lower groove both sides, dead time is wanted suitably, burn or overlap to prevent the too high generation of groove Yin Wendu, groove temperature is low there is groove, when being welded to web and wing plate infall, note electric arc to stretch inward as far as possible, prevent infall weld seam from occurring dead angle, easy generation incomplete fusion defect, by impurity physical removals such as welding slags after having welded,
G walks, and after welding, removes the stationary installation of stress reinforcement plate and triangle stress plate, removes stress reinforcement plate and triangle stress plate, thus realizes being symmetrically welded H steel;
H walks, and is coated to by anticorrosive coating on H steel, obtains product;
The raw material of described anticorrosive coating comprises resol, epoxy resin, carbon black, ethylene glycol phenyl ether, hydroxypropyl-beta-cyclodextrin, N-Methyl pyrrolidone, tetramethylolmethane, polyvinyl butyral acetal, nano silicon, polymethacrylate resin, attapulgite and polydimethylsiloxane.
2. H steel as claimed in claim 1, it is characterized in that: in described coating, the weight part of each raw material is respectively resol 35 weight part ~ 45 weight part, epoxy resin 20 weight part ~ 30 weight part, carbon black 2 weight part ~ 5 weight part, ethylene glycol phenyl ether 5 weight part ~ 8 weight part, hydroxypropyl-beta-cyclodextrin 5 weight part ~ 9 weight part, N-Methyl pyrrolidone 3 weight part ~ 6 weight part, tetramethylolmethane 2 weight part ~ 5 weight part, polyvinyl butyral acetal 8 weight part ~ 12 weight part, nano silicon 1 weight part ~ 3 weight part, polymethacrylate resin 5 weight part ~ 10 weight part, attapulgite 1 weight part ~ 3 weight part and polydimethylsiloxane 0.5 weight part ~ 1.5 weight part.
3. H steel as claimed in claim 1 or 2, is characterized in that: in described coating, the weight part of each raw material is respectively resol 40 weight part, epoxy resin 25 weight part, carbon black 3 weight part, ethylene glycol phenyl ether 6 weight part, hydroxypropyl-beta-cyclodextrin 8 weight part, N-Methyl pyrrolidone 5 weight part, tetramethylolmethane 3 weight part, polyvinyl butyral acetal 10 weight part, nano silicon 2 weight part, polymethacrylate resin 8 weight part, attapulgite 2 weight part and polydimethylsiloxane 1 weight part.
4. H steel as claimed in claim 1, is characterized in that: the preparation method of described coating, comprises,
The first step, takes resol, epoxy resin, polymethacrylate resin according to above-mentioned weight, and is placed in mixing machine and stirs 10-20 minute at normal temperatures and pressures with the speed of 500-700 rev/min;
Second step, evenly adds ethylene glycol phenyl ether, polyvinyl butyral acetal, hydroxypropyl-beta-cyclodextrin and N-Methyl pyrrolidone by above-mentioned weight part in the mixture of the first step, stirs 15-30 minute at normal temperatures and pressures the speed of 200-500 rev/min;
3rd step, keeps the mixture of second step to be in the whipped state of 800-1000 rev/min, and evenly adds remaining feed composition by weight in the mixture, stir 20-30 minute at normal temperatures and pressures;
4th step, stirs the 3rd step with the speed of 1100-1300 rev/min at normal temperatures and pressures further and obtains mixture, evenly namely obtain required coating to whole system.
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|---|---|---|---|---|
| CN107283136A (en) * | 2017-08-14 | 2017-10-24 | 合肥明英富海生物科技有限公司 | A kind of processing technology of the circular knife of installation for fermenting |
| CN114833427A (en) * | 2022-06-08 | 2022-08-02 | 安徽精工钢结构有限公司 | Welding method for column limbs of groove-shaped section of building steel structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235469A (en) * | 2008-02-28 | 2008-08-06 | 武汉钢铁(集团)公司 | High-strength easy-formation atmospheric corrosion resisting steel |
| CN101402159A (en) * | 2008-11-07 | 2009-04-08 | 江苏科技大学 | Device and method for testing weldability for rolled steel for vessel |
| CN104985280A (en) * | 2015-06-17 | 2015-10-21 | 昆明理工大学 | Welding procedure method for ore pulp pipe to slip mass, collapse body and earthquake fault zone |
-
2015
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235469A (en) * | 2008-02-28 | 2008-08-06 | 武汉钢铁(集团)公司 | High-strength easy-formation atmospheric corrosion resisting steel |
| CN101402159A (en) * | 2008-11-07 | 2009-04-08 | 江苏科技大学 | Device and method for testing weldability for rolled steel for vessel |
| CN104985280A (en) * | 2015-06-17 | 2015-10-21 | 昆明理工大学 | Welding procedure method for ore pulp pipe to slip mass, collapse body and earthquake fault zone |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107283136A (en) * | 2017-08-14 | 2017-10-24 | 合肥明英富海生物科技有限公司 | A kind of processing technology of the circular knife of installation for fermenting |
| CN114833427A (en) * | 2022-06-08 | 2022-08-02 | 安徽精工钢结构有限公司 | Welding method for column limbs of groove-shaped section of building steel structure |
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