CN103706917A - Finishing end heating method capable of preventing finishing end cracks from being generated in PCB welding - Google Patents
Finishing end heating method capable of preventing finishing end cracks from being generated in PCB welding Download PDFInfo
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- CN103706917A CN103706917A CN201310728858.5A CN201310728858A CN103706917A CN 103706917 A CN103706917 A CN 103706917A CN 201310728858 A CN201310728858 A CN 201310728858A CN 103706917 A CN103706917 A CN 103706917A
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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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
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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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- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
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Abstract
The invention discloses a finishing end heating method capable of preventing finishing end cracks from being generated in FCB welding, and relates to the field of material forming and control. The finishing end heating method capable of preventing the finishing end cracks from being generated in the FCB welding comprises the steps that a temperature control area in an isosceles triangle is preset in a welding finishing end area, the vertex of the isosceles triangle is located on a longitudinal welding seam, the bottom side of the isosceles triangle is perpendicular to the longitudinal welding seam, the length of the height of the isosceles triangle is a, and the length of the bottom side of the isosceles triangle is 2b; three yield strength sections and four thickness sections of a steel plate to be welded are defined; the a, the b and a temperature range T of the temperature control area are preset according to the yield strength section where the yield strength p of the steel plate 1 to be welded is located and the thickness section where the thickness d of the steel plate 1 to be welded is located; the temperature control area is heated, the longitudinal welding seam is welded, and the temperature in the temperature control area reaches T when welding is reaches the vertex of the isosceles triangle from the initial welding end of the longitudinal welding seam; heating is stopped, and welding is stopped when welding reaches the welding finishing end of the longitudinal welding seam; cooling is carried out, and a welded steel plate sample is formed. According to the finishing end heating method capable of preventing the finishing end cracks from being generated in the FCB welding, the probability of generating cracks at the finishing end of the welding can be reduced, the phenomenon of arch cambers on a plate surface can be controlled, deformation can be reduced, and the technology can be simplified.
Description
Technical field
The present invention relates to forming materials and control field, be specifically related to the terminal heating means that a kind of FCB of preventing welding produces terminal crackle.
Background technology
FCB(Flux Cuprum Behind, reverse side solder flux and copper packing) welding is widely used in each large boats and ships heavy industry enterprise, it is the necessary links that forms flat section streamline, the performance degree of FCB welding welding usefulness forms directly impact to the production of flat section and manufacturing capacity, when at present FCB welding carries out terminal welding, using more is that terminal is restrained method.The terminal method of restraining mainly comprises terminal bottoming welding method, terminal oil pressure leash law, the contained three kinds of methods of method of arc-extinguishing plate terminal.
Terminal bottoming welding method, terminal oil pressure leash law, arc-extinguishing plate terminal are restrained method and are had respectively following shortcoming:
Terminal bottoming welding method is the backing welding of weld seam terminal part between first welding base metal, then carries out the welding of mother metal, last, removes backing welding, again backing welding position is welded.When carrying out terminal bottoming welding, first use CO
2gas shield adopts semiautomatic welding solder terminal backing welding partly simultaneously, and fusion length is not less than 300mm, and what backing welding thickness was thickness of slab is over half.Carrying out mother metal when welding, be soldered to terminal backing welding place, cut off first column electrode, with after with electrode, weld.Terminal bottoming welding method need first be carried out backing welding, and postwelding backing weld seam part will be removed and reweld.Terminal bottoming welding method operation is various, and welding process is complicated, if backing weld seam does not partly clean up, affects welding quality.
Terminal oil pressure leash law is to place oil gear at welding arc-extinguishing plate place, end, with fastening weldment, after having welded, then takes off oil gear.In the process that employing terminal oil pressure leash law is welded, weld seam terminal is subject to oil pressure constraint, very easily in welding process, produce very large stress, and terminal oil pressure leash law is higher to equipment requirement.
It is before welding that arc-extinguishing plate terminal is restrained method, has the arc-extinguishing plate of enough rigidity to restrain weld seam terminal, and then weld in the setting of weld seam terminal.Arc-extinguishing plate terminal is restrained method has particular requirement to arc-extinguishing plate size, and in welding process, arc-extinguishing plate terminal is restrained method and also need to the width of arc-extinguishing plate, be adjusted accordingly with weldment change in size.Arc-extinguishing plate terminal is restrained method makes weld seam terminal be subject to the constraint of arc-extinguishing plate, and the stress not only producing in welding process can be very concentrated, easily cracks, and, arc-extinguishing plate terminal is restrained the width that method needs constantly to adjust with weldment change in size arc-extinguishing plate, and operation is various, and welding efficiency is low.
In sum, terminal bottoming welding method, terminal oil pressure leash law, arc-extinguishing plate terminal are restrained method or complex process or need be had the corollary equipment of high requirement, welding production operation is complicated, welding efficiency is lower, and weld seam terminal suffers restraints, the Stress Release that is unfavorable for commissure, causes weldment to produce larger strain, and weldment plate face arching phenomenon is comparatively serious.
Summary of the invention
For the defect existing in prior art, the object of the present invention is to provide a kind of FCB of preventing welding to produce the terminal heating means of terminal crackle, not only can significantly reduce the occurrence probability of weld seam terminal crackle, control panel face arching phenomenon, effectively improve welding quality, reduce welding deformation, and the method can be simplified welding production technology.
For reaching above object, the technical scheme that the present invention takes is: a kind of FCB of preventing welding produces the terminal heating means of terminal crackle, comprises that following step is poly-:
A, arc-extinguishing plate is arranged on to the solder terminal bottom of the longitudinal seam that steel plate to be welded forms, run-on tab is arranged on to the bottom, welding top of longitudinal seam, the default temperature controlled region that is isosceles triangle in solder terminal region, the summit of described isosceles triangle is positioned on longitudinal seam, and away from arc-extinguishing plate, the base of isosceles triangle is vertical with longitudinal seam, and the height of isosceles triangle is a, and base length is 2b;
Three yield strength intervals of definition steel plate to be welded: the interval P1:[235MPa of the first yield strength, 275MPa]; The interval P2:(275MPa of the second yield strength, 345MPa]; The interval P3:(345MPa of the 3rd yield strength, 390MPa]; Between four caliper zones of definition steel plate to be welded: D1:[10mm between the first caliper zones, 16mm]; D2:(16mm between the second caliper zones, 22mm]; D3:(22mm between the 3rd caliper zones, 30mm]; D4:(30mm between the 4th caliper zones, 35mm];
B, according between the caliper zones at the thickness d place of the yield strength interval at the yield strength p place of steel plate to be welded and steel plate to be welded, the temperature range T of default a, b and temperature controlled region:
P ∈ P1, during d ∈ D1, default a=500mm, b=150mm, T=400～450 ℃;
P ∈ P1, during d ∈ D2, default a=500mm, b=200mm, T=550～600 ℃;
P ∈ P1, during d ∈ D3, default a=600mm, b=200mm, T=600～650 ℃;
P ∈ P1, during d ∈ D4, default a=650mm, b=200mm, T=600～650 ℃;
P ∈ P2, during d ∈ D1, default a=500mm, b=150mm, T=450～500 ℃;
P ∈ P2, during d ∈ D2, default a=550mm, b=200mm, T=580～630 ℃;
P ∈ P2, during d ∈ D3, default a=650mm, b=200mm, T=600～650 ℃;
P ∈ P2, during d ∈ D4, default a=650mm, b=200mm, T=630～680 ℃;
P ∈ P3, during d ∈ D1, default a=550mm, b=200mm, T=550～600 ℃;
P ∈ P3, during d ∈ D2, default a=600mm, b=200mm, T=600～650 ℃;
P ∈ P3, during d ∈ D3, default a=650mm, b=200mm, T=650～700 ℃;
P ∈ P3, during d ∈ D4, default a=700mm, b=200mm, T=650～700 ℃;
According to a, b mark temperature controlled region;
C, heating temperature control district, by FCB welding arc welding longitudinal seam, while being soldered to the summit of isosceles triangle from the welding top of longitudinal seam, the temperature of temperature controlled region reaches T;
D, stop heating, by FCB welding arc, from the summit of isosceles triangle, be soldered to the solder terminal of longitudinal seam, form welding steel crude product; Welding steel crude product is cooled to the temperature identical with surrounding environment, forms welding steel sample.
On the basis of technique scheme, further comprising the steps of between step B and step C: prediction FCB welding arc is soldered to the required time m1 in summit of isosceles triangle from the welding top of longitudinal seam, the temperature of prediction from beginning heating temperature control district to temperature controlled region reaches the required heat time m2 of T, judge whether m2 is less than m1, if, first start to weld longitudinal seam, rear beginning heating temperature control district; Otherwise, first start heating temperature control district, start to weld longitudinal seam afterwards.
On the basis of technique scheme, described prediction FCB welding arc the is soldered to isosceles triangle required time m1 in summit from the welding top of longitudinal seam comprises the following steps: according to the default speed of welding of the width of longitudinal seam, measure the welding top of longitudinal seam and the welding distance between the summit of isosceles triangle, described welding distance, divided by speed of welding, is obtained to m1.
On the basis of technique scheme, the temperature of described prediction from beginning heating temperature control district to temperature controlled region reaches the required heat time m2 of T and comprises the following steps: choose heating tool, according to the parameter of heating tool, draw the programming rate of temperature controlled region, according to the programming rate of the minimum of a value of T and temperature controlled region, calculate, obtain m2.
On the basis of technique scheme, described heating tool is roasting of flame or thermocouple.
On the basis of technique scheme, step C is further comprising the steps of: by temperature measuring tool, monitor the temperature of temperature controlled region, if the temperature of temperature controlled region reaches the maximum of T, stop heating; If the temperature of temperature controlled region, lower than the minimum of a value of T, continues heating.
On the basis of technique scheme, described temperature measuring tool is some temperature meter or infrared thermometer.
Compared with prior art, the invention has the advantages that:
(1) in welding process, the temperature controlled region heating to steel plate to be welded solder terminal region, by FCB welding arc welding longitudinal seam, while being soldered to the summit of isosceles triangle from the welding top of longitudinal seam, the temperature of temperature controlled region reaches T; Stop heating, by FCB welding arc, from the summit of isosceles triangle, be soldered to the solder terminal of longitudinal seam.Heat butt-welding fitting terminal area, reduced in welding process, and the thermal stress that weldment terminal causes because of the temperature difference, thus effectively prevented that in FCB welding welding near the generation of terminal crackle weld seam terminal has improved the welding quality of FCB welding.
(2) do not need, by external force, steel plate to be welded is rigidly fixed to constraint, weld seam is in free state, the stress producing in welding is effectively discharged at solder terminal, the degree of stress concentration can effectively be fallen, thereby reduce the welding deformation that thermal stress cannot discharge generation, significantly reduce the plate face arching phenomenon of welding finished product.
(3) for reducing the generation of terminal crackle, only need to be in welding process to the heating of the temperature controlled region arranging in terminal area, row monitoring during to the heating state of temperature controlled region.Therefore, technique is simple, and easy operating has been avoided complicated front the preparation and after welding treatment work of weldering; Adopt roasting of flame or thermocouple to heat, adopt some temperature meter or infrared thermometer to monitor heating state, heating tool used is simple flame or resistance heating device, and temperature measuring tool is Handheld temperature instrument, therefore, to corollary equipment, require lower.
Accompanying drawing explanation
Fig. 1 is assembling schematic diagram when FCB welds in the embodiment of the present invention.
In figure: 1-steel plate to be welded, 2-arc-extinguishing plate, 3-run-on tab, 4-temperature controlled region, 5-longitudinal seam.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The embodiment of the present invention provides a kind of FCB of preventing welding to produce the terminal heating means of terminal crackle, comprises the following steps:
S1, arc-extinguishing plate 2 is arranged on to the solder terminal bottom of the longitudinal seam 5 that steel plate to be welded 1 forms, run-on tab 3 is arranged on to the bottom, welding top of longitudinal seam 5, the default temperature controlled region 4 that is isosceles triangle in solder terminal region, the summit of isosceles triangle is positioned on longitudinal seam 5, and away from arc-extinguishing plate 2, the base of isosceles triangle is vertical with longitudinal seam 5, and the height of isosceles triangle is a, and base length is 2b; Three yield strength intervals of definition steel plate to be welded 1: the interval P1:[235MPa of the first yield strength, 275MPa]; The interval P2:(275MPa of the second yield strength, 345MPa]; The interval P3:(345MPa of the 3rd yield strength, 390MPa]; Between four caliper zones of definition steel plate to be welded 1: D1:[10mm between the first caliper zones, 16mm]; Second bends D2:(16mm between caliper zones, 22mm]; D3:(22mm between the 3rd caliper zones, 30mm]; D4:(30mm between the 4th caliper zones, 35mm];
S2, ginseng are shown in Table 1, according to steel plate to be welded 1 the yield strength interval at yield strength p place and the caliper zones at the thickness d place of steel plate to be welded 1 between, the temperature range T of default a, b and temperature controlled region 4:
P ∈ P1, during d ∈ D1, default a=500mm, b=150mm, T=400～450 ℃;
P ∈ P1, during d ∈ D2, default a=500mm, b=200mm, T=550～600 ℃;
P ∈ P1, during d ∈ D3, default a=600mm, b=200mm, T=600～650 ℃;
P ∈ P1, during d ∈ D4, default a=650mm, b=200mm, T=600～650 ℃;
P ∈ P2, during d ∈ D1, default a=500mm, b=150mm, T=450～500 ℃;
P ∈ P2, during d ∈ D2, default a=550mm, b=200mm, T=580～630 ℃;
P ∈ P2, during d ∈ D3, default a=650mm, b=200mm, T=600～650 ℃;
P ∈ P2, during d ∈ D4, default a=650mm, b=200mm, T=630～680 ℃;
P ∈ P3, during d ∈ D1, default a=550mm, b=200mm, T=550～600 ℃;
P ∈ P3, during d ∈ D2, default a=600mm, b=200mm, T=600～650 ℃;
P ∈ P3, during d ∈ D3, default a=650mm, b=200mm, T=650～700 ℃;
P ∈ P3, during d ∈ D4, default a=700mm, b=200mm, T=650～700 ℃;
According to a, b mark temperature controlled region 4;
Table 1, temperature controlled region and heating-up temperature scope are selected reference table
S3, prediction FCB welding arc are soldered to the required time m1 in summit of isosceles triangle from the welding top of longitudinal seam 5: according to the default speed of welding of the width of longitudinal seam 5, measure the welding top of longitudinal seam 5 and the welding distance between the summit of isosceles triangle, to weld distance divided by speed of welding, obtain m1; From starting heating temperature control district 4, to temperature controlled region, 4 temperature reaches the required heat time m2 of T in prediction: choose heating tool, heating tool is roasting of flame or thermocouple etc., according to the parameter of heating tool, draw the programming rate of temperature controlled region 4, according to the programming rate of the minimum of a value of T and temperature controlled region 4, calculate, obtain m2; Judge whether m2 is less than m1, if so, first start to weld longitudinal seam 5, rear beginning heating temperature control district 4; Otherwise, first start heating temperature control district 4, start to weld longitudinal seam 5 afterwards;
S4, heating temperature control district 4, by FCB welding arc welding longitudinal seam 5, while being soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches T; By temperature measuring tool, monitor the temperature of temperature controlled region 4, temperature measuring tool, for some temperature meter or infrared thermometer, if the temperature of temperature controlled region 4 reaches the maximum of T, stops heating; If the temperature of temperature controlled region 4, lower than the minimum of a value of T, continues heating;
S5, stop heating, by FCB welding arc, from the summit of isosceles triangle, be soldered to the solder terminal of longitudinal seam 5, form welding steel crude product; Welding steel crude product is cooled to the temperature identical with surrounding environment, forms welding steel sample.
Below by 27 specific embodiments, describe method of the present invention in detail.
The present embodiment provides a kind of FCB of preventing welding to produce the terminal heating means of terminal crackle, comprises the following steps:
Step 101, arc-extinguishing plate 2 is arranged on to the solder terminal bottom of the longitudinal seam 5 that steel plate to be welded 1 forms, run-on tab 3 is arranged on to the bottom, welding top of longitudinal seam 5, the default temperature controlled region 4 that is isosceles triangle in solder terminal region, the summit of isosceles triangle is positioned on longitudinal seam 5, and away from arc-extinguishing plate 2, the base of isosceles triangle is vertical with longitudinal seam 5, and the height of isosceles triangle is a, and base length is 2b; Three yield strength interval: P1:[235MPa of definition steel plate to be welded 1,275MPa]; P2:(275MPa, 345MPa]; P3:(345MPa, 390MPa]; Between four caliper zones of definition steel plate to be welded 1: D1:[10mm, 16mm]; D2:(17mm, 22mm]; D3:(23mm, 30mm]; D4:(31mm, 35mm].
The steel plate of selecting in step 102, the present embodiment is Q235 steel, specification is 13000 * 2200 * 14(length * wide * thickness), yield strength p is 235MPa, thickness d is 14mm, meet structural steel > > requirement for GB712-2011 < < boats and ships and ocean engineering, be p ∈ P1, d ∈ D1, ginseng is shown in Table 2, default a=500mm, b=150mm, T=400～450 ℃, according to a, b mark temperature controlled region 4.
Step 103, according to the default speed of welding of the width of longitudinal seam 5, measure the welding top and the welding distance between the summit of isosceles triangle of longitudinal seam 5, will weld apart from divided by speed of welding, obtain m1; Choose roasting of flame and according to the parameter of heating tool, draw the programming rate of temperature controlled region 4 as heating tool, according to the programming rate of the minimum of a value of T and temperature controlled region 4, calculate, obtain m2; M2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 104, by FCB welding arc welding longitudinal seam 5, temperature controlled region 4 is heated, meanwhile, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result, referring to table 3, when the temperature of temperature controlled region 4 reaches 450 ℃, stops heating; The temperature of temperature controlled region 4 during lower than 400 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 400 ℃～450 ℃.
Step 105, stop heating, by FCB welding arc, from the summit of isosceles triangle, be soldered to the solder terminal of longitudinal seam 5, form welding steel crude product; Welding steel crude product is cooled to the temperature identical with surrounding environment, forms welding steel sample.
The present embodiment provides a kind of FCB of preventing welding to produce the terminal heating means of terminal crackle, comprises the following steps:
Step 201, this step are identical with the step 101 in embodiment 1.
The steel plate of selecting in step 202, the present embodiment is Q390 steel, specification is 10000 * 2000 * 25(length * wide * thickness), yield strength p is 390MPa, and thickness d is 25mm, meets structural steel > > requirement for GB712-2011 < < boats and ships and ocean engineering, be p ∈ P3, d ∈ D3, ginseng is shown in Table 2, default a=650mm, b=200mm, T=650～700 ℃; According to a, b mark temperature controlled region 4.
Step 203, according to the default speed of welding of the width of longitudinal seam 5, measure the welding top and the welding distance between the summit of isosceles triangle of longitudinal seam 5, will weld apart from divided by speed of welding, obtain m1; Choose thermocouple as heating tool, according to the parameter of heating tool, draw the programming rate of temperature controlled region 4, according to the programming rate of the minimum of a value of T and temperature controlled region 4, calculate, obtain m2; M1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 204, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, monitor the surface of steel plate temperature at 4 places, temperature controlled region by infrared thermometer, monitoring result, referring to table 3, when the temperature of temperature controlled region 4 reaches 700 ℃, stops heating; The temperature of temperature controlled region 4 during lower than 650 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 650～700 ℃.
Step 205, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 3 comprise the following steps:
Step 301, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 302, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 303, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 304, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 450 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 400 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 400～450 ℃.
Step 305, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 4 comprise the following steps:
Step 401, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 402, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 403, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 404, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 450 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 400 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 400～450 ℃.
Step 405, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 5 comprise the following steps:
Step 501, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 502, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 503, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 504, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 600 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 550 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 550～600 ℃.
Step 505, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 6 comprise the following steps:
Step 601, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 602, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 603, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 604, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 600 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 550 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 550～600 ℃.
Step 605, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 7 comprise the following steps:
Step 701, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 702, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 703, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 704, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 705, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 8 comprise the following steps:
Step 801, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 802, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 803, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 804, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 805, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 9 comprise the following steps:
Step 901, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 902, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 903, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 904, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 905, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 10 comprise the following steps:
Step 1001, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1002, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1003, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 1004, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 1005, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 11 comprise the following steps:
Step 1101, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1102, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1103, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 1104, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result, referring to table 3, when the temperature of temperature controlled region 4 reaches 500 ℃, stops heating, the temperature of temperature controlled region 4 during lower than 450 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 450～500 ℃.
Step 1105, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 12 comprise the following steps:
Step 1201, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1202, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1203, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 1204, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 500 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 450 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 450～500 ℃.
Step 1205, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 13 comprise the following steps:
Step 1301, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1302, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1303, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 1304, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 500 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 450 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 450～500 ℃.
Step 1305, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 14 comprise the following steps:
Step 1401, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1402, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1403, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 1404, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 630 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 580 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 580～630 ℃.
Step 1405, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 6 comprise the following steps:
Step 1501, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1502, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1503, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 1504, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 630 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 580 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 580～630 ℃.
Step 1505, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 16 comprise the following steps:
Step 1601, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1602, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1603, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 1604, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 1605, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 17 comprise the following steps:
Step 1701, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1702, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1703, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 1704, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 1705, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 18 comprise the following steps:
Step 1801, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1802, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1803, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 1804, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 680 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 630 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 630～680 ℃.
Step 1805, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 19 comprise the following steps:
Step 1901, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 1902, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 1903, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 1904, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 680 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 630 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 630～680 ℃.
Step 1905, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 20 comprise the following steps:
Step 2001, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2002, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2003, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 2004, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 600 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 550 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 550～600 ℃.
Step 2005, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 21 comprise the following steps:
Step 2101, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2102, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2103, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 2104, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 600 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 550 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 550～600 ℃.
Step 2105, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 22 comprise the following steps:
Step 2201, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2202, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2203, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 2204, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 600 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 550 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 550～600 ℃.
Step 2205, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 23 comprise the following steps:
Step 2301, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2302, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2303, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 2304, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by a surface of steel plate temperature at temperature meter monitoring 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 2305, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 24 comprise the following steps:
Step 2401, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2402, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2403, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 2404, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 650 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 600 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 600～650 ℃.
Step 2405, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 25 comprise the following steps:
Step 2501, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2502, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2503, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m2 is less than m1, determines and first starts to weld longitudinal seam 5, rear beginning heating temperature control district 4.
Step 2504, first start by FCB welding arc welding longitudinal seam 5, then heating temperature control district 4, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 700 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 650 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 650～700 ℃.
Step 2505, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 26 comprise the following steps:
Step 2601, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2602, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2603, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 2604, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 700 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 650 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 650～700 ℃.
Step 2605, this step are identical with the step 105 in embodiment 1.
The terminal heating means of embodiment 27 comprise the following steps:
Step 2701, this step are identical with the step 101 in embodiment 1.
The parameters such as the yield strength of step 2702, the present embodiment light plate, specification, heating-up temperature interval, temperature controlled region are as shown in Table 2 below, according to a in table 2, b mark temperature controlled region 4.
The heating tool of selecting in step 2703, the present embodiment is as shown in Table 2 below, according to the step 103 in embodiment 1, obtains m1, m2, and m1 is less than m2, determines and first to start heating temperature control district 4, starts to weld longitudinal seam 5 afterwards.
Step 2704, first start heating temperature control district 4, then by FCB welding arc welding longitudinal seam 5, by infrared thermometer, monitor the surface of steel plate temperature at 4 places, temperature controlled region, monitoring result is referring to table 3, when the temperature of temperature controlled region 4 reaches 700 ℃, stop heating, the temperature of temperature controlled region 4 during lower than 650 ℃, continues heating; When FCB welding arc is soldered to the summit of isosceles triangle from the welding top of longitudinal seam 5, the temperature of temperature controlled region 4 reaches 650～700 ℃.
Step 2705, this step are identical with the step 105 in embodiment 1.
The steel plate that embodiment 1～27 selects all meets structural steel > > requirement for GB712-2011 < < boats and ships and ocean engineering, selects the parameters such as yield strength, specification, heating-up temperature interval, temperature controlled region, heating tool of steel plate as shown in Table 2 below in embodiment 1～27.
Parameter and the heating tool table of the yield strength of table 2, embodiment 1～27 light plate, specification, heating-up temperature interval, temperature controlled region
Temperature monitoring situation record sheet in table 3, embodiment 1～27
After steel plate to be welded welding in embodiment 1～27, take out weldment, make to weld sample in free state, in the both sides apart from longitudinal seam center 50mm, along welding the local flatness of sample in fusion length orientation measurement embodiment 1～27, detect in embodiment 1～27 and weld in sample and choose arbitrarily in the scope that length is L, weld the maximum irregularity degree distortion K of sample in embodiment 1～27, the testing result ginseng of embodiment 1～27 is shown in Table 3.
Welding sample maximum distortion testing result table in table 4 embodiment 1～30
According to CB/T3958～2004 < < boats and ships steel weld seam magnetic, detect respectively, infiltration characterization processes and quality grading > >, GB3323～2005 < < metal molten weldering welding point radiography > >, GB11345～89 < < steel weld seam manual ultrasonic method of detection and result of detection classification > >, blow-out terminal to the welding sample of embodiment 1～27 is carried out Non-Destructive Testing, all reach II level criterion of acceptability.
The present invention is not limited to above-mentioned embodiment, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, within these improvements and modifications are also considered as protection scope of the present invention.The content not being described in detail in this description belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. prevent that FCB welding from producing terminal heating means for terminal crackle, it is characterized in that, comprise that following step is poly-:
A, arc-extinguishing plate (2) is arranged on to the solder terminal bottom of the longitudinal seam (5) that steel plate to be welded (1) forms, run-on tab (3) is arranged on to the bottom, welding top of longitudinal seam (5), the default temperature controlled region (4) that is isosceles triangle in solder terminal region, the summit of described isosceles triangle is positioned on longitudinal seam (5), and away from arc-extinguishing plate (2), the base of isosceles triangle is vertical with longitudinal seam (5), and the height of isosceles triangle is a, and base length is 2b;
Three yield strength intervals of definition steel plate to be welded (1):
The interval P1:[235MPa of the first yield strength, 275MPa];
The interval P2:(275MPa of the second yield strength, 345MPa];
The interval P3:(345MPa of the 3rd yield strength, 390MPa];
Between four caliper zones of definition steel plate to be welded (1):
D1:[10mm between the first caliper zones, 16mm];
D2:(16mm between the second caliper zones, 22mm];
D3:(22mm between the 3rd caliper zones, 30mm];
D4:(30mm between the 4th caliper zones, 35mm];
Between the caliper zones at the thickness d place of B, and steel plate to be welded (1) interval according to the yield strength at the yield strength p place of steel plate to be welded (1), preset the temperature range T of a, b and temperature controlled region (4):
P ∈ P1, during d ∈ D1, default a=500mm, b=150mm, T=400～450 ℃;
P ∈ P1, during d ∈ D2, default a=500mm, b=200mm, T=550～600 ℃;
P ∈ P1, during d ∈ D3, default a=600mm, b=200mm, T=600～650 ℃;
P ∈ P1, during d ∈ D4, default a=650mm, b=200mm, T=600～650 ℃;
P ∈ P2, during d ∈ D1, default a=500mm, b=150mm, T=450～500 ℃;
P ∈ P2, during d ∈ D2, default a=550mm, b=200mm, T=580～630 ℃;
P ∈ P2, during d ∈ D3, default a=650mm, b=200mm, T=600～650 ℃;
P ∈ P2, during d ∈ D4, default a=650mm, b=200mm, T=630～680 ℃;
P ∈ P3, during d ∈ D1, default a=550mm, b=200mm, T=550～600 ℃;
P ∈ P3, during d ∈ D2, default a=600mm, b=200mm, T=600～650 ℃;
P ∈ P3, during d ∈ D3, default a=650mm, b=200mm, T=650～700 ℃;
P ∈ P3, during d ∈ D4, default a=700mm, b=200mm, T=650～700 ℃;
According to a, b mark temperature controlled region (4);
C, heating temperature control district (4), by FCB welding arc welding longitudinal seam (5), while being soldered to the summit of isosceles triangle from the welding top of longitudinal seam (5), the temperature of temperature controlled region (4) reaches T;
D, stop heating, by FCB welding arc, from the summit of isosceles triangle, be soldered to the solder terminal of longitudinal seam (5), form welding steel crude product; Welding steel crude product is cooled to the temperature identical with surrounding environment, forms welding steel sample.
2. as claimed in claim 1ly prevent that FCB welding from producing the terminal heating means of terminal crackle, it is characterized in that: further comprising the steps of between step B and step C: prediction FCB welding arc is soldered to the required time m1 in summit of isosceles triangle from the welding top of longitudinal seam (5), from starting heating temperature control district (4), to temperature controlled region, the temperature of (4) reaches the required heat time m2 of T in prediction, judge whether m2 is less than m1, if, first start to weld longitudinal seam (5), rear beginning heating temperature control district (4); Otherwise, first start heating temperature control district (4), start to weld longitudinal seam (5) afterwards.
3. as claimed in claim 2ly prevent that FCB welding from producing the terminal heating means of terminal crackle, it is characterized in that: described prediction FCB welding arc the is soldered to isosceles triangle required time m1 in summit from the welding top of longitudinal seam (5) comprises the following steps: according to the default speed of welding of the width of longitudinal seam (5), measure the welding top of longitudinal seam (5) and the welding distance between the summit of isosceles triangle, described welding distance, divided by speed of welding, is obtained to m1.
4. as claimed in claim 2ly prevent that FCB welding from producing the terminal heating means of terminal crackle, it is characterized in that: from starting heating temperature control district (4), to temperature controlled region, the temperature of (4) reaches the required heat time m2 of T and comprises the following steps in described prediction: choose heating tool, according to the parameter of heating tool, draw the programming rate of temperature controlled region (4), according to the programming rate of the minimum of a value of T and temperature controlled region (4), calculate, obtain m2.
5. the terminal heating means that prevent FCB welding generation terminal crackle as claimed in claim 4, is characterized in that: described heating tool is roasting of flame or thermocouple.
6. the FCB welding that prevents as described in any one in claim 1 to 5 produces the terminal heating means of terminal crackle, it is characterized in that: step C is further comprising the steps of: the temperature of monitoring temperature controlled region (4) by temperature measuring tool, if the temperature of temperature controlled region (4) reaches the maximum of T, stop heating; If the temperature of temperature controlled region (4), lower than the minimum of a value of T, continues heating.
7. the terminal heating means that prevent FCB welding generation terminal crackle as claimed in claim 6, is characterized in that: described temperature measuring tool is some temperature meter or an infrared thermometer.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289822A (en) * | 2014-09-29 | 2015-01-21 | 中国航空工业集团公司北京航空制造工程研究所 | Large thickness structure to-be-welded workpiece and welding method thereof |
| CN104475921A (en) * | 2014-12-10 | 2015-04-01 | 青岛北海船舶重工有限责任公司 | Welding layout structure for enlarging welding range of three-wire FCB (Flux Copper Backing) method and technological method |
| CN110465722A (en) * | 2019-08-29 | 2019-11-19 | 广船国际有限公司 | A method of passing through FCB welding Y type groove plate |
| CN110508910A (en) * | 2019-09-06 | 2019-11-29 | 上海外高桥造船有限公司 | Longitudinal bulkhead welding method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005125348A (en) * | 2003-10-22 | 2005-05-19 | Nippon Steel Corp | Large heat input butt welded joint superior in brittle fracture characteristic resistance |
| JP2005131708A (en) * | 2003-10-08 | 2005-05-26 | Nippon Steel Corp | Welded structure having excellent brittle crack propagation resistance and its welding method |
| JP2007326147A (en) * | 2006-05-12 | 2007-12-20 | Jfe Steel Kk | Welded structure excellent in brittle fracture propagation-stopping characteristics |
| EP1997578A1 (en) * | 2006-03-22 | 2008-12-03 | Nippon Steel Corporation | High heat input butt-welded joint excelling in brittle fracturing resisting performance and method of verifying brittle fracturing resisting performance of high heat input butt-welded joint |
| CN101435050A (en) * | 2007-11-12 | 2009-05-20 | 株式会社神户制钢所 | Low temperature tenacity excellent low yield ratio high intensity steel plate for welding heat influenced part and mother plate, and manufacturing method thereof |
| CN102271861A (en) * | 2009-01-14 | 2011-12-07 | 新日本制铁株式会社 | Weld structure having brittle fracture arresting characterstics |
| CN102489889A (en) * | 2011-12-14 | 2012-06-13 | 扬州大洋造船有限公司 | High-efficiency welding method for shipbuilding |
| CN103008852A (en) * | 2012-12-28 | 2013-04-03 | 广州广船国际股份有限公司 | Submerged arc welding process |
-
2013
- 2013-12-25 CN CN201310728858.5A patent/CN103706917B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005131708A (en) * | 2003-10-08 | 2005-05-26 | Nippon Steel Corp | Welded structure having excellent brittle crack propagation resistance and its welding method |
| JP2005125348A (en) * | 2003-10-22 | 2005-05-19 | Nippon Steel Corp | Large heat input butt welded joint superior in brittle fracture characteristic resistance |
| EP1997578A1 (en) * | 2006-03-22 | 2008-12-03 | Nippon Steel Corporation | High heat input butt-welded joint excelling in brittle fracturing resisting performance and method of verifying brittle fracturing resisting performance of high heat input butt-welded joint |
| JP2007326147A (en) * | 2006-05-12 | 2007-12-20 | Jfe Steel Kk | Welded structure excellent in brittle fracture propagation-stopping characteristics |
| CN101435050A (en) * | 2007-11-12 | 2009-05-20 | 株式会社神户制钢所 | Low temperature tenacity excellent low yield ratio high intensity steel plate for welding heat influenced part and mother plate, and manufacturing method thereof |
| CN102271861A (en) * | 2009-01-14 | 2011-12-07 | 新日本制铁株式会社 | Weld structure having brittle fracture arresting characterstics |
| CN102489889A (en) * | 2011-12-14 | 2012-06-13 | 扬州大洋造船有限公司 | High-efficiency welding method for shipbuilding |
| CN103008852A (en) * | 2012-12-28 | 2013-04-03 | 广州广船国际股份有限公司 | Submerged arc welding process |
Non-Patent Citations (3)
| Title |
|---|
| 唐连元: "FCB法焊接终端裂纹和背面焊缝表面裂纹控制的技术研究", 《金属加工(热加工)》 * |
| 李晓泉等: "FCB焊接缺陷的工艺控制", 《造船技术》 * |
| 鲍光辉等: "FCB法焊接外在质量影响因素分析", 《造船技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289822A (en) * | 2014-09-29 | 2015-01-21 | 中国航空工业集团公司北京航空制造工程研究所 | Large thickness structure to-be-welded workpiece and welding method thereof |
| CN104475921A (en) * | 2014-12-10 | 2015-04-01 | 青岛北海船舶重工有限责任公司 | Welding layout structure for enlarging welding range of three-wire FCB (Flux Copper Backing) method and technological method |
| CN110465722A (en) * | 2019-08-29 | 2019-11-19 | 广船国际有限公司 | A method of passing through FCB welding Y type groove plate |
| CN110508910A (en) * | 2019-09-06 | 2019-11-29 | 上海外高桥造船有限公司 | Longitudinal bulkhead welding method |
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