CN1569378A - Angular end-to-end welding method for super long and thick steel plates - Google Patents
Angular end-to-end welding method for super long and thick steel plates Download PDFInfo
- Publication number
- CN1569378A CN1569378A CN 200410017908 CN200410017908A CN1569378A CN 1569378 A CN1569378 A CN 1569378A CN 200410017908 CN200410017908 CN 200410017908 CN 200410017908 A CN200410017908 A CN 200410017908A CN 1569378 A CN1569378 A CN 1569378A
- Authority
- CN
- China
- Prior art keywords
- welding
- steel plate
- ultra
- weld
- moulding bed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 170
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000000465 moulding Methods 0.000 claims description 50
- 210000001503 joint Anatomy 0.000 claims description 24
- 238000007689 inspection Methods 0.000 claims description 9
- 239000006247 magnetic powder Substances 0.000 claims description 8
- 230000007547 defect Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 238000007664 blowing Methods 0.000 abstract 1
- 230000004807 localization Effects 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to weld method for angle joint between ultra-thick and very long steel boards. It uses narrow gap submerged arc automatic weld process and double face asymmetrical narrow gap '' u'' type weld chamfer. The steps include: 1. processes the double face asymmetrical narrow gap ''U'' type weld chamfer. 2. Produces assembly jig for assembly and positive and reverse weld assembly jigs; 3. Assembles localization steel boards on the jig, and assembles strengthening boards at two ends of the steel board, assembles arc strike and arc blowing out boards between the jointing seam between the two boards; 4. Preheats the steel boards before weld; 5. According to the welding standards, uses narrow gap submerged arc automatic weld to weld the two steel boards on the two jigs. The weld quality is excellent.
Description
Technical field
The present invention relates to welding method, particularly a kind of ultra-long and ultra-thick steel plate has angle butt joint welding method.
Background technology
The ultra-long and ultra-thick steel plate has angle butt joint welding, 18PC2-6 support plate jam welding as shown in Figure 1, the characteristics of its weld seam are long for butt-weld length, the loading of weld seam is big, and the heat distortion amount that produces when for this reason welding is also big, and distortion is difficult to control, as control bad, deflection surpasses regulation, and the upper and lower plane of this part will can't process, and remedial measure is extremely difficult especially.Simultaneously, this weld seam is very high for the requirement of weld seam internal soundness, and the weld seam grade is the E2 level, is with highest-ranking in the standard, requires complete penetraction and fusion in welding, and does 100% UT (Ultrasonic Testing) and magnetic powder inspection.Existing have general two-sided asymmetric " V " type groove that adopts of angle butt joint welding method to weld with Lincoln weld for this ultra-long and ultra-thick steel plate, owing to weld with general Lincoln weld, for thicker be the steel plate of 160mm as thickness, it is very big that its groove need be opened, as shown in Figure 2, wherein α=135 °, β=40～45 °, otherwise can't weld, yet the distortion of the big more generation of groove is also just big more, and therefore existing welding method has been difficult to satisfy the requirement of product.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of ultra-long and ultra-thick steel plate that angle butt joint welding method is arranged,, reduce welding deformation, and improve productivity effect, minimizing welding material to guarantee welding quality.
For achieving the above object, the invention provides a kind of ultra-long and ultra-thick steel plate has angle butt joint welding method, is characterized in:
1.. adopt narrow gap technology of automatic submerged arc;
2.. the slope type of the two steel plate abutment joints that weld is two-sided asymmetric narrow gap " U " type bevel for welding.
Described ultra-long and ultra-thick steel plate has angle butt joint welding method to comprise the following steps:
1.. two-sided asymmetric narrow gap " U " the type bevel for welding of machining two steel plates;
2.. make and assemble with moulding bed and positive and negative welding moulding bed;
3.. assembling with moulding bed on assembling and positioning two steel plates, and install stiffening plate additional at the steel plate two ends, install at two steel plate abutment joint two ends draw, the blow-out plate, the slope type of this plate is with the abutment joint groove;
4.. the steel plate weld preheating;
5.. according to welding conditions, weld this two steel plate with the Lincoln weld of narrow gap on moulding bed in positive and negative welding.
Described two steel plate angles are 135 °, the groove symmetry of two steel plates, and two-sided asymmetric narrow gap " U " the type bevel for welding of its abutment joint simultaneously is 30 ° in 135 ° of angles of steel plate, and another side is 10 °, and the groove bottom is the circular arc of 10mm for radius.
Described ultra-long and ultra-thick steel plate requires when angle butt joint welding method is arranged with narrow gap Lincoln weld welding steel:
1.. play low weldering with the Lincoln weld of narrow gap on just welding with moulding bed, the road number is together;
2.. after having beaten back welding, carry out back root cleaning, polishing, and do magnetic powder inspection, guarantee to hang anti-welding with welding on the moulding bed behind the zero defect;
3.. every weldering finishes one deck, checks that promptly welding bead has zero defect, in time repairs as defectiveness;
4.. in the time of welding, in time utilize the model of respective shapes to measure the angular distortion situation of steel plate, when deflection 〉=5mm, stop at this welding with the welding on the moulding bed, weld with welding on the moulding bed and steel plate is translated into another:
5.. weld seam first three/welding capacity when welding in time stand up welding more;
6.. in the time of welding, measure the deflection of steel plate length direction,, steel plate is translated into anti-welding with welding on the moulding bed when steel plate produces length direction on just welding with moulding bed distortion; The distortion that produces length direction when steel plate on instead welding with moulding bed is translated into steel plate and is just welded with welding on the moulding bed.
Described steel plate weld preheating is to carry out on just welding with moulding bed, and minimum preheat temperature is 100～120 ℃.
Described welding conditions are: welding current: 370～450A, and voltage: 26～34V, speed of welding: 18～23m/h, the maximum interlayer temperature of weld seam is 230～270 ℃.
Described ultra-long and ultra-thick steel plate has angle to dock the distortion situation of in time measuring the welding generation in the welding process of welding method, controls the angle of steel plate and the distortion of length direction to stand up to weld more.
Described ultra-long and ultra-thick steel plate has angle butt joint welding method light plate welding back with asbestos cloth insulation back cooling, then polishes and does UT (Ultrasonic Testing) and magnetic powder inspection.
Technique effect of the present invention is:
1.. the present invention adopts narrow gap technology of automatic submerged arc, welding quality is (presentation quality and the internal soundness that comprise weld seam) better, compare with general technology of automatic submerged arc, the deflection of narrow crack Lincoln weld is littler, and welding deformation is more regular, the in addition controlled deformation of being more convenient for shooting the arrow at the target, the depth of penetration of this welding technology is that (general welding method is 2～3mm), satisfies the requirement of seam inspection about 4mm in addition;
2.. the present invention adopts two-sided asymmetric narrow gap " U " type bevel for welding, not only effectively controlled deformation, solve problem on deformation, and compare with original two-sided asymmetric " V " type bevel for welding, about a loading young waiter in a wineshop or an inn/one of its weld seam, can will shorten weld interval about half, thereby improve productivity effect greatly, reduce welding material, and the minimizing of loading also means the minimizing of distortion, therefore also reduced steel plate deformed;
3.. the present invention constantly measures the distortion situation that welding produces in when welding, standing up the angle of controlling steel plate and the distortion of length direction, thereby has reduced deflection more, guarantees welding quality.
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is the structural representation of existing support plate butt joint.
Fig. 2 is the structural representation of existing support plate abutment joint welding groove.
Fig. 3 is the structural representation of the support plate abutment joint welding groove of the embodiment of the invention.
Fig. 4 places the front elevation of assembling with moulding bed for the support plate of the embodiment of the invention.
Fig. 5 places welding with just welding the front elevation of using moulding bed for the support plate of the embodiment of the invention.
Fig. 6 places the welding front elevation of anti-welding with moulding bed for the support plate of the embodiment of the invention.
Fig. 7 is just welding the synoptic diagram that welds generation angular distortion with moulding bed for the support plate of the embodiment of the invention.
Fig. 8 is that the support plate of the embodiment of the invention produces the synoptic diagram of angular distortion in anti-welding with the moulding bed welding.
Synoptic diagram when Fig. 9 is soldered to 1/3rd welding capacity for the support plate of the embodiment of the invention.
Figure 10 is just welding the synoptic diagram that produces length deformation with the moulding bed welding for the support plate of the embodiment of the invention.
Figure 11 is the support plate of the embodiment of the invention produces length deformation with the moulding bed welding in anti-welding a synoptic diagram.
Embodiment
When ultra-long and ultra-thick steel plate of the present invention has angle butt joint welding method to be used for support plate jam welding, comprise the following steps:
1.. two-sided asymmetric narrow gap " U " the type bevel for welding of 1 liang of member of machining support plate 11,12, as shown in Figure 3, two members, 11,12 angle α 1 are 135 °, the groove symmetry of two members 11,12, two-sided asymmetric narrow gap " U " the type bevel for welding of its abutment joint 13 is 30 ° in 135 ° of angle one sides of member β 1, another side β 2 is 10 °, and the groove bottom is the circular arc of 10mm for radius R, stays root 5mm (so that back chipping, polishing of assembling and groove) in the middle of the groove; During machine work,, can make a groove model and be used for ruling, according to line processing, after the machine work groove be carried out magnetic powder inspection then in order to prevent the asymmetric and dimensional discrepancy of two member grooves;
2.. make assembling with moulding bed 2 and positive and negative welding moulding bed 3,4, shown in Fig. 4,5,6;
3.. at assembling 1 liang of member of assembling and positioning support plate 11,12 on the moulding bed 2, and install stiffening plate 5 additional at support plate 1 two ends, preventing that tacking bursts apart in handling, install at the two ends of two members, 11,12 abutment joints draw, blow-out plate (figure does not show), the slope type of this plate is with the abutment joint groove;
4.. support plate 1 weld preheating: support plate 1 winched to just weld with carrying out preheating on the moulding bed 3, preheating should make whole support plate 1 thermally equivalent, and minimum preheat temperature is 100～120 ℃;
5.. according to welding conditions, positive and negative welding with on the moulding bed 3,4 with narrow gap Lincoln weld welded support plate two members 11,12:
Above-mentioned welding conditions are: welding current: 370～450A, and voltage: 26～34V, speed of welding: 18～23m/h, the maximum interlayer temperature of weld seam is 270 ℃;
On positive and negative welding usefulness moulding bed 3,4, require with narrow gap Lincoln weld welded support plate two members:
A. play low weldering with the Lincoln weld of narrow gap on just welding with moulding bed 3, the road number of backing welding is together;
B. after having beaten back welding, hang down moulding bed and carry out back root cleaning, polishing, and do magnetic powder inspection, guarantee to hang anti-welding with welding on the moulding bed 4 behind the zero defect;
C. every weldering finishes one deck, checks that in time welding bead has zero defect, should in time repair if any defectives such as pore, seamings;
At any time measure the angular distortion situation of support plate 1 when d. welding, when for example on just welding, welding with moulding bed 3, measure with model 6, (A is to being deformation direction as shown in Figure 7, B is to being the welding wire injection direction), when deflection s 〉=5mm, stop welding, support plate 1 is translated into anti-welding with welding on the moulding bed 4; When welding on instead welding with moulding bed 4, measure with model 7, (C is to being deformation direction) as shown in Figure 8 when deflection f 〉=5mm, stops welding equally, translates into and just welding with welding on the moulding bed 3, welding by that analogy;
E. weld seam first three/welding capacity when welding should in time stand up welding more: because weld seam weldering first three/during a welding capacity, its deflection is maximum, two the soldering angle distortion of its excess-three branch is minimum, that is to say first three/quality of welding capacity control is directly connected to the quality of the Deformation control of whole support plate 1, therefore first three/should accomplish in time to stand up welding during welding capacity welding, that turns over is many more, it is good more that its deflection is controlled, can be referring to Fig. 9 (wherein L is total welding capacity);
F. in addition, also should measure the deflection of support plate 1 length direction, shown in Figure 10,11, its control principle is substantially with the control of angular distortion, when this distortion mainly appears at the welding capacity of back 2/3rds,, support plate 1 uses the distortion that produces length direction on the moulding bed 3 when just welding, and deflection t 〉=5mm, when (D is to being deformation direction), support plate 1 should be translated into anti-welding with welding on the moulding bed 4 as shown in figure 10; When support plate 1 in anti-welding with the distortion that produces length direction on the moulding bed 4, and deflection t 〉=5mm when (E is to being deformation direction), should translates into and just weld with welding on the moulding bed 3 as shown in figure 11, controls the distortion of length direction with this.
In addition, because welding interval is longer, need strict control variation of temperature situation during welding, the maximum interlayer temperature of weld seam is 270 ℃, when if when welding, maximum interlayer temperature was soon near 270 ℃, should stop welding and be incubated, weld again after making temperature reduce to 100 ℃ naturally.After having welded, also uses same whole support plate asbestos cloth insulation back cooling.
Polish after welding finishes and do UT (Ultrasonic Testing) and magnetic powder inspection.
Ultra-long and ultra-thick steel plate of the present invention has angle butt joint welding method also to can be used for having between other kinds ultra-long and ultra-thick steel plate angle welding or flat butt joint welding.
Claims (8)
1, a kind of ultra-long and ultra-thick steel plate has angle butt joint welding method, it is characterized in that:
1.. adopt narrow gap technology of automatic submerged arc;
2.. the slope type of the two steel plate abutment joints that weld is two-sided asymmetric narrow gap " U " type bevel for welding.
2, ultra-long and ultra-thick steel plate according to claim 1 has angle butt joint welding method, it is characterized in that comprising the following steps:
1.. two-sided asymmetric narrow gap " U " the type bevel for welding of machining two steel plates;
2.. make and assemble with moulding bed and positive and negative welding moulding bed;
3.. assembling with moulding bed on assembling and positioning two steel plates, and install stiffening plate additional at the steel plate two ends, install at two steel plate abutment joint two ends draw, the blow-out plate, the slope type of this plate is with the abutment joint groove;
4.. the steel plate weld preheating;
5.. according to welding conditions, weld this two steel plate with the Lincoln weld of narrow gap on moulding bed in positive and negative welding.
3, ultra-long and ultra-thick steel plate according to claim 1 and 2 has angle butt joint welding method, it is characterized in that described two steel plate angles are 135 °, the groove symmetry of two steel plates, two-sided asymmetric narrow gap " U " the type bevel for welding of its abutment joint simultaneously is 30 ° in 135 ° of angles of steel plate, another side is 10 °, and the groove bottom is the circular arc of 10mm for radius.
4, ultra-long and ultra-thick steel plate according to claim 2 has angle butt joint welding method, requires when it is characterized in that with narrow gap Lincoln weld welding steel:
1.. play low weldering with the Lincoln weld of narrow gap on just welding with moulding bed, the road number is together;
2.. after having beaten back welding, carry out back root cleaning, polishing, and do magnetic powder inspection, guarantee to hang anti-welding with welding on the moulding bed behind the zero defect;
3.. every weldering finishes one deck, checks that promptly welding bead has zero defect, in time repairs as defectiveness;
4.. in the time of welding, in time utilize the model of respective shapes to measure the angular distortion situation of steel plate, when deflection 〉=5mm, stop at this welding with the welding on the moulding bed, weld with welding on the moulding bed and steel plate is translated into another:
5.. weld seam first three/welding capacity when welding in time stand up welding more;
6.. in the time of welding, measure the deflection of steel plate length direction,, steel plate is translated into anti-welding with welding on the moulding bed when steel plate produces length direction on just welding with moulding bed distortion; The distortion that produces length direction when steel plate on instead welding with moulding bed is translated into steel plate and is just welded with welding on the moulding bed.
5, ultra-long and ultra-thick steel plate according to claim 2 has angle butt joint welding method, it is characterized in that described steel plate weld preheating is to carry out on just welding with moulding bed, and minimum preheat temperature is 100～120 ℃.
6, ultra-long and ultra-thick steel plate according to claim 2 has angle butt joint welding method, it is characterized in that described welding conditions are: welding current: 370～450A, voltage: 26～34V, speed of welding: 18～23m/h, the maximum interlayer temperature of weld seam is 230～270 ℃.
7, ultra-long and ultra-thick steel plate according to claim 1 has angle butt joint welding method, it is characterized in that in time measuring in the welding process distortion situation that welding produces, and controls the angle of steel plate and the distortion of length direction to stand up welding more.
8, ultra-long and ultra-thick steel plate according to claim 2 has angle butt joint welding method, it is characterized in that steel plate welding back with asbestos cloth insulation back cooling, then polishes and does UT (Ultrasonic Testing) and magnetic powder inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017908 CN1267240C (en) | 2004-04-23 | 2004-04-23 | Angular end-to-end welding method for super long and thick steel plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017908 CN1267240C (en) | 2004-04-23 | 2004-04-23 | Angular end-to-end welding method for super long and thick steel plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1569378A true CN1569378A (en) | 2005-01-26 |
| CN1267240C CN1267240C (en) | 2006-08-02 |
Family
ID=34479230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410017908 Expired - Lifetime CN1267240C (en) | 2004-04-23 | 2004-04-23 | Angular end-to-end welding method for super long and thick steel plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1267240C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434222C (en) * | 2006-08-10 | 2008-11-19 | 上海人造板机器厂有限公司 | Welding process and apparatus for major diameter roller |
| CN100450692C (en) * | 2006-08-25 | 2009-01-14 | 中国核工业第二三建设公司 | Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method |
| CN100460120C (en) * | 2007-04-11 | 2009-02-11 | 山东齐鲁电机制造有限公司 | Technique of welding connection ring for empty inner-cooled turbogenerator |
| CN101234447B (en) * | 2007-01-18 | 2011-06-29 | 株式会社Ihi | Vertical-position welding method |
| CN102240841A (en) * | 2011-06-30 | 2011-11-16 | 首钢总公司 | Submerged-arc welding process for T-type joint for extra thick steel plate |
| CN102861972A (en) * | 2012-10-10 | 2013-01-09 | 青岛北海船舶重工有限责任公司 | Welding method for vertically spliced super-thick steel plate |
| CN102922102A (en) * | 2012-10-10 | 2013-02-13 | 浙江国盛钢结构有限公司 | Steel plate welding method |
| CN105436749A (en) * | 2014-09-26 | 2016-03-30 | 任丘市永基建筑安装工程有限公司 | Novel steel plate welding method |
| CN106735990A (en) * | 2016-12-29 | 2017-05-31 | 浙江久立特材科技股份有限公司 | A kind of splicing of predeformation slab vertical masonry joint weldering adjusting apparatus and its welding method |
| CN106881518A (en) * | 2015-12-15 | 2017-06-23 | 嘉兴五洲阀门有限公司 | A kind of welding procedure of valve body circumferential welded seam |
| CN110824005A (en) * | 2019-11-07 | 2020-02-21 | 中车长春轨道客车股份有限公司 | Ultrasonic detection process for welding seam backing welding of bogie frame |
-
2004
- 2004-04-23 CN CN 200410017908 patent/CN1267240C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434222C (en) * | 2006-08-10 | 2008-11-19 | 上海人造板机器厂有限公司 | Welding process and apparatus for major diameter roller |
| CN100450692C (en) * | 2006-08-25 | 2009-01-14 | 中国核工业第二三建设公司 | Large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method |
| CN101234447B (en) * | 2007-01-18 | 2011-06-29 | 株式会社Ihi | Vertical-position welding method |
| CN100460120C (en) * | 2007-04-11 | 2009-02-11 | 山东齐鲁电机制造有限公司 | Technique of welding connection ring for empty inner-cooled turbogenerator |
| CN102240841A (en) * | 2011-06-30 | 2011-11-16 | 首钢总公司 | Submerged-arc welding process for T-type joint for extra thick steel plate |
| CN102240841B (en) * | 2011-06-30 | 2013-04-17 | 首钢总公司 | Submerged-arc welding process for T-type joint for extra thick steel plate |
| CN102861972A (en) * | 2012-10-10 | 2013-01-09 | 青岛北海船舶重工有限责任公司 | Welding method for vertically spliced super-thick steel plate |
| CN102922102A (en) * | 2012-10-10 | 2013-02-13 | 浙江国盛钢结构有限公司 | Steel plate welding method |
| CN105436749A (en) * | 2014-09-26 | 2016-03-30 | 任丘市永基建筑安装工程有限公司 | Novel steel plate welding method |
| CN106881518A (en) * | 2015-12-15 | 2017-06-23 | 嘉兴五洲阀门有限公司 | A kind of welding procedure of valve body circumferential welded seam |
| CN106735990A (en) * | 2016-12-29 | 2017-05-31 | 浙江久立特材科技股份有限公司 | A kind of splicing of predeformation slab vertical masonry joint weldering adjusting apparatus and its welding method |
| CN110824005A (en) * | 2019-11-07 | 2020-02-21 | 中车长春轨道客车股份有限公司 | Ultrasonic detection process for welding seam backing welding of bogie frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1267240C (en) | 2006-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1267240C (en) | Angular end-to-end welding method for super long and thick steel plates | |
| CN108788507B (en) | Groove structure for welding steel plate and welding process | |
| CN102240841B (en) | Submerged-arc welding process for T-type joint for extra thick steel plate | |
| CN102950370A (en) | Submerged-arc welding process method for welding H-shaped steel with web plate more than 16mm thick | |
| CN109877485B (en) | Welding method of composite steel plate of coal scuttle in power plant | |
| CN1931500A (en) | CO2 gas protected single-sided welding and double-sided forming process | |
| CN1880699A (en) | Friction stir welding method and structure body formed | |
| CN104259634A (en) | Full penetration fillet weld back-gouging-free welding technology | |
| CN106112263A (en) | Using T2 red copper as the titanium steel composite board laser of transition zone silk filling butt welding method | |
| CN110253118B (en) | Welding method for 917 steel plate and aluminum-titanium steel composite material | |
| CN106903401A (en) | Obliquity buried arc welding method | |
| CN108544062B (en) | Automatic welding method for aluminum alloy sheet | |
| CN113369660A (en) | Method for eliminating defect of electron beam welding air hole | |
| CN113878204A (en) | Welding method of stainless steel composite plate | |
| CN111604593A (en) | Laser mirror image welding method | |
| CN114769882A (en) | Welding equipment and steel plate welding method | |
| CN1228166C (en) | Low-speed diesel engine frame welding method | |
| CN104139229A (en) | Welding method for forming T-joints | |
| CN1827285A (en) | Welding method for steel rail and ship deck | |
| CN114309891A (en) | Method for improving welding efficiency of vertical butt welding of thick plate | |
| CN112620944A (en) | laser-MIG (Metal-inert gas) composite welding method for ship aluminum alloy medium plate | |
| CN1267241C (en) | Angle-to-angle welding method for super thick plates | |
| CN110539059A (en) | Double-wire MIG welding method for aluminum alloy material | |
| CN116393823A (en) | Laser welding method | |
| CN111014905A (en) | Mechanical welding method for header close-packed pipe joints |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA SHIPBUILDING INDUSTRY CO. Free format text: FORMER NAME OR ADDRESS: HUDONG HEAVY MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 200129 Research Institute of machine building, Pudong Road, Shanghai, 2851 Patentee after: China State Shipbuilding Corp. Address before: 200129 No. 2851, Pudong Avenue, Shanghai Patentee before: HUDONG HEAVY MACHINERY Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: HUDONG HEAVY MACHINERY CO., LTD. Free format text: FORMER OWNER: CHINA SHIPBUILDING INDUSTRY CO. Effective date: 20080201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080201 Address after: No. 2851 Pudong road Shanghai Machine Building Research Institute Patentee after: HUDONG HEAVY MACHINERY Co.,Ltd. Address before: No. 2851 Pudong road Shanghai Machine Building Research Institute Patentee before: China State Shipbuilding Corp. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090703 Address after: No. 2851 Pudong Road, Shanghai, Research Institute of machine building, zip code: 200129 Co-patentee after: SHANGHAI HULIN HEAVY INDUSTRY Co.,Ltd. Patentee after: HUDONG HEAVY MACHINERY Co.,Ltd. Address before: No. 2851 Pudong Road, Shanghai, Research Institute of machine building, zip code: 200129 Patentee before: HUDONG HEAVY MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200129 Research Institute of machine building, Pudong Road, Shanghai, 2851 Patentee after: HUDONG HEAVY MACHINERY Co.,Ltd. Patentee after: CSSC MARINE POWER COMPONENTS Co.,Ltd. Address before: 200129 Research Institute of machine building, Pudong Road, Shanghai, 2851 Patentee before: HUDONG HEAVY MACHINERY Co.,Ltd. Patentee before: SHANGHAI HULIN HEAVY INDUSTRY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060802 |
|
| CX01 | Expiry of patent term |