CN103909322B - The welding procedure of motor-car dirt box hoisting structure - Google Patents
The welding procedure of motor-car dirt box hoisting structure Download PDFInfo
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- CN103909322B CN103909322B CN201410139217.0A CN201410139217A CN103909322B CN 103909322 B CN103909322 B CN 103909322B CN 201410139217 A CN201410139217 A CN 201410139217A CN 103909322 B CN103909322 B CN 103909322B
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- 238000003466 welding Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 230000007797 corrosion Effects 0.000 claims abstract description 5
- 238000005260 corrosion Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 63
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 42
- IADRPEYPEFONML-UHFFFAOYSA-N [Ce].[W] Chemical compound [Ce].[W] IADRPEYPEFONML-UHFFFAOYSA-N 0.000 claims description 21
- 229910052786 argon Inorganic materials 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 18
- 239000011229 interlayer Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000002537 cosmetic Substances 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 241000271559 Dromaiidae Species 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
-
- 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
- B23K9/32—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to a kind of welding procedure of motor-car dirt box hoisting structure, feature is, comprises following processing step: the welding of (1) little hanger: for the length dimension 2mm larger than required size of the two blocks of side plates and one piece of base plate that weld little hanger; Butt welded seam welds; (2) the welding of little hanger and L-type steel: little hanger and L-type steel point are fixedly assembled together, and on the below pad of little hanger the corrosion resistant plate of 2mm, make the 2mm larger than required size of the size between the lower surface of little hanger and L-type steel lower surface; Little hanger and L-type steel are assembled together and obtain hanger composition, two groups of hanger composition points are fixed together; Butt welded seam welds; (3) what L-type steel formed with flap seat welds: formed by hanger and form be assembled together with flap seat, butt welded seam welds.Invention increases the weld strength of hanger, reduce welding deformation, make casing have safe and reliable hoisting structure.
Description
Technical field
The present invention relates to a kind of welding procedure of casing hoisting structure, especially a kind of welding procedure of motor-car dirt box hoisting structure.
Background technology
CRH380BL type EMUs operation speed per hour is 350 kilometers, F-Zero is 380 kilometers; Motor-car dirt box, as the water system function of car load, hangs on below car body.Hanger is as the hoisting structure between car body and dirt box, and the welding quality of hanger is related to the safe operation of EMUs.
Hanger is as the hoisting structure of dirt box, and the pitch-row of its locating hole and flatness have certain requirement.The structure of hanging as shown in Figure 1, comprises flap seat composition 10 and hanger composition (little hanger 20 and L-type steel 30).The weld seam leg of hanger is very big, so just has very large welding deformation; If because distortion and causing hole distance and flatness overproof, be just installed to car body to casing and cause very large impact, the technique of hanger place weld industry and reversible deformation just seems particularly important.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of welding procedure of motor-car dirt box hoisting structure is provided, improve the weld strength of hanger, reduce welding deformation, make casing have safe and reliable hoisting structure.
According to technical scheme provided by the invention, a kind of welding procedure of motor-car dirt box hoisting structure, feature is, comprises following processing step:
(1) welding of little hanger: little hanger is the channel-shaped that two blocks of side plates and one piece of base plate are welded, for the length dimension 2mm larger than required size of the two blocks of side plates and one piece of base plate that weld little hanger; Detailed process is as follows:
A, retaining wall on slope: the side finished edge first contacting one end at base plate with L-type steel;
B, adopt frock to be assembled together the two blocks of side plates and one piece of base plate that are used for welding little hanger, a side of little hanger side plate and a contact aside of base plate, the bottom panel side between these two sides and the side of side plate are weld seam;
C, welding process comprise backing weld seam, packed layer weld seam and cap weld;
First carry out twice backing weld seam, welding parameter is: the cerium tungsten electrode of Φ 1.6mm, and electric current is 120 ~ 140A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
Then carry out 3 road packed layer weld seams, welding parameter is: the cerium tungsten electrode of Φ 2.0mm, and electric current is 150 ~ 180A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
Finally carry out 3 road cap welds, welding parameter is: the cerium tungsten electrode of Φ 2.4mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
(3) the welding of little hanger and L-type steel:
B is of a size of between the lower surface of a, little hanger and L-type steel lower surface, little hanger and L-type steel point are fixedly assembled together, and on the below pad of little hanger the corrosion resistant plate of 2mm, make the 2mm larger than required size B of the size between the lower surface of little hanger and L-type steel lower surface;
B, little hanger and L-type steel being assembled together obtains hanger composition, is fixed together by two groups of hangers composition points; That is, by the little hanger notch of one group of hanger composition upwards, the little hanger notch of another group hanger composition is downward, is fixed together respectively at the both ends of the L-type steel of two groups of hanger compositions;
The both sides of c, little hanger and L-type steel junction are weld seam, and welding process comprises backing weld seam, packed layer weld seam and cap weld;
First carry out twice backing weld seam in the side of little hanger and L-type steel junction, welding parameter is: the cerium tungsten electrode of Φ 1.6mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
Then 3 road packed layer weld seams are carried out at the opposite side of little hanger and L-type steel junction, backing weld seam carries out 2 road packed layer weld seams, welding parameter is: the cerium tungsten electrode of Φ 2.0mm, electric current is 160 ~ 190A, gas is the argon gas of concentration 99.99%, gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
Finally on the packed layer weld seam of both sides, carry out 2 road cap weld gaps respectively, welding parameter is: the cerium tungsten electrode of Φ 2.4mm, and electric current is 150 ~ 180A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
D, treat weld seam cool to room temperature, use flame heating hanger composition, adopt hammering method to carry out straightening, make being of the required size of little hanger and L-type steel;
(4) what L-type steel formed with flap seat welds:
A, hanger composition is formed be assembled together with flap seat, and adopt frock to fix;
B, welding process comprise backing weld seam and cap weld, and welding parameter is: the cerium tungsten electrode of Φ 2.0mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
C, treat weld seam cool to room temperature, use flame heating hanger composition, adopt hammering method to carry out straightening, hanger is formed and flap seat forms is of the required size.
The material of described hoisting structure is AISI304 stainless steel; Described welding material is ER308 welding wire.
Described weld seam both sides 20mm is without greasy dirt, rusty stain.
The welding procedure of motor-car dirt box hoisting structure of the present invention, can improve the weld strength of hanger and reduce welding deformation, making this casing have safe and reliable hoisting structure; And reduce welding deformation to lifting size and the impact of flatness, and then the work difficulty reduced when casing and car body are installed and workload.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of described hoisting structure.
Fig. 2 is the front view of described little hanger.
Fig. 3 is the axonometric drawing of described little hanger.
Fig. 4 is the front view of described hoisting structure.
Fig. 5 is the I enlarged drawing of Fig. 4.
Fig. 6 is the welding schematic diagram of described little hanger weld seam.
Fig. 7 is the scale diagrams that described little hanger and flap seat form.
Fig. 8 is that the point of two groups of little hangers and L-type steel assembly fixes schematic diagram.
Fig. 9 be little hanger with L-type steel weld seam weld schematic diagram.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the invention will be further described.
Embodiment: a kind of welding procedure of motor-car dirt box hoisting structure, comprises following processing step:
(1) raw material are selected: select AISI304 stainless steel as the raw material of hoisting structure, select ER308 welding wire as welding material;
(2) welding of little hanger: the channel-shaped that little hanger is welded by two blocks of side plates and one piece of base plate, because component weld thickness is comparatively large, and is multilayer welding, has welded rear parts and had contraction; Therefore, for the length dimension C 2mm larger than required size of the two blocks of side plates and one piece of base plate that weld little hanger, as shown in Figure 2; Detailed process is as follows:
A, retaining wall on slope: the side finished edge first contacting one end at base plate with L-type steel, as shown in Figure 4, Figure 5;
B, frock is adopted to be assembled together the two blocks of side plates and one piece of base plate (corrosion resistant plate) that are used for welding little hanger, a side of little hanger side plate and a contact aside (as shown in Figure 6) of base plate, bottom panel side between these two sides and the side of side plate are weld seam, ensure that weld seam both sides 20mm is without the dirt such as greasy dirt, rusty stain; Frock is welded, can welding deformation be reduced like this;
C, as shown in Figure 6, welding process comprises backing weld seam, packed layer weld seam and cap weld;
First carry out twice backing weld seam (in Fig. 6 1a and 8a), welding parameter is: the cerium tungsten electrode of Φ 1.6mm, and electric current is 120 ~ 140A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
Then carry out 3 roads packed layer weld seam (in Fig. 6 2a, 3a and 4a), welding parameter is: the cerium tungsten electrode of Φ 2.0mm, and electric current is 150 ~ 180A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
Finally carry out 3 road cap welds (in Fig. 6 5a, 6a, 7a), welding parameter is: the cerium tungsten electrode of Φ 2.4mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
D, according to drawing requirement, to welding after little hanger carry out dimension control and weld inspection, guarantee part dimension and weld seam zero defect;
(3) the welding of little hanger and L-type steel:
A, as shown in Figure 7, size A=33mm between the upper surface that the lower surface of little hanger and flap seat form, size B=40mm between the lower surface of little hanger and L-type steel lower surface, size A joins the critical size in weldering process, the tolerance required is ± 1mm, if carry out joining weldering according to theoretical size, the existence due to welding deformation has been welded this size rear and has been become 36mm; In order to ensure this size, little hanger and L-type steel point are fixedly assembled together, and on the below pad of little hanger the corrosion resistant plate of 2mm, make the size B=42mm between the lower surface of little hanger and L-type steel lower surface;
B, as shown in Figure 8, is assembled together little hanger and L-type steel and obtains hanger composition, is fixed together by two groups of hangers composition points; That is, by the little hanger notch of one group of hanger composition upwards, the little hanger notch of another group hanger composition is downward, is fixed together respectively at the both ends of the L-type steel of two groups of hanger compositions, can reaches the effect of mutual reversible deformation like this;
C, as shown in Figure 9, the both sides of little hanger and L-type steel junction are weld seam, and guarantee that the weld seam left and right 20mm of little hanger and L-type steel is without the dirt such as greasy dirt, rusty stain, welding process comprises backing weld seam, packed layer weld seam and cap weld;
First carry out twice backing weld seam (in Fig. 9 1b and 2b) in the side of little hanger and L-type steel junction, welding parameter is: the cerium tungsten electrode of Φ 1.6mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
Then 3 roads packed layer weld seam (in Fig. 9 3b, 4b and 5b) are carried out at the opposite side of little hanger and L-type steel junction, backing weld seam carries out 2 roads packed layer weld seam (in Fig. 9 6b and 7b), welding parameter is: the cerium tungsten electrode of Φ 2.0mm, electric current is 160 ~ 190A, gas is the argon gas of concentration 99.99%, gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
Finally on the packed layer weld seam of both sides, carry out 2 roads cap weld gap (in Fig. 9 8b, 9b, 10b and 11b) respectively, welding parameter is: the cerium tungsten electrode of Φ 2.4mm, and electric current is 150 ~ 180A, and gas is the argon gas of concentration 99.99%, gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
D, treat weld seam cool to room temperature, use flame to be heated to 1000 DEG C and hanger is formed be heated to shiny red, adopt hammering method to carry out straightening, make being of the required size of little hanger and L-type steel;
E, according to drawing requirement, to welding after hanger composition carry out dimension control and weld inspection, guarantee part dimension and weld seam zero defect;
(4) what L-type steel formed with flap seat welds:
A, hanger composition form be assembled together with flap seat, and adopt frock to fix, prevent from being out of shape;
The weld seam both sides 20mm of b, guarantee flap seat composition and L-type steel is without the dirt such as greasy dirt, rusty stain, welding process comprises backing weld seam and cap weld, and welding parameter is: the cerium tungsten electrode of Φ 2.0mm, and electric current is 140 ~ 170A, gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
C, treat weld seam cool to room temperature, use flame to be heated to 1000 DEG C and hanger is formed be heated to shiny red, adopt hammering method to carry out straightening, hanger is formed and flap seat forms is of the required size;
D, according to drawing requirement, to welding after hanger composition and flap seat composition carry out dimension control and weld inspection, guarantee part dimension and weld seam zero defect.
Claims (3)
1. a welding procedure for motor-car dirt box hoisting structure, is characterized in that, comprises following processing step:
(1) welding of little hanger: little hanger is the channel-shaped that two blocks of side plates and one piece of base plate are welded, for the length dimension 2mm larger than required size of the two blocks of side plates and one piece of base plate that weld little hanger; Detailed process is as follows:
A, retaining wall on slope: the side finished edge first contacting one end at base plate with L-type steel;
B, adopt frock to be assembled together the two blocks of side plates and one piece of base plate that are used for welding little hanger, a side of little hanger side plate and a contact aside of base plate, the bottom panel side between these two sides and the side of side plate are weld seam;
C, welding process comprise backing welding, packed layer weldering and cosmetic welding;
First carry out twice backing welding, welding parameter is: the cerium tungsten electrode of Φ 1.6mm, and electric current is 120 ~ 140A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
Then carry out 3 road packed layer welderings, welding parameter is: the cerium tungsten electrode of Φ 2.0mm, and electric current is 150 ~ 180A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
Finally carry out 3 road cosmetic weldings, welding parameter is: the cerium tungsten electrode of Φ 2.4mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
(2) the welding of little hanger and L-type steel:
B is of a size of between the lower surface of a, little hanger and L-type steel lower surface, little hanger and L-type steel point are fixedly assembled together, and on the below pad of little hanger the corrosion resistant plate of 2mm, make the 2mm larger than required size B of the size between the lower surface of little hanger and L-type steel lower surface;
B, little hanger and L-type steel being assembled together obtains hanger composition, is fixed together by two groups of hangers composition points; That is, by the little hanger notch of one group of hanger composition upwards, the little hanger notch of another group hanger composition is downward, is fixed together respectively at the both ends of the L-type steel of two groups of hanger compositions;
The both sides of c, little hanger and L-type steel junction are weld seam, and welding process comprises backing welding, packed layer weldering and cosmetic welding;
First carry out twice backing welding in the side of little hanger and L-type steel junction, welding parameter is: the cerium tungsten electrode of Φ 1.6mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
Then carry out 3 road packed layer welderings at the opposite side of little hanger and L-type steel junction, backing welding carries out 2 road packed layer welderings, and welding parameter is: the cerium tungsten electrode of Φ 2.0mm, electric current is 160 ~ 190A, gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
Last burn-oning at the packed layer of both sides carries out 2 road cosmetic weldings respectively, and welding parameter is: the cerium tungsten electrode of Φ 2.4mm, and electric current is 150 ~ 180A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min, interlayer temperature≤150 DEG C;
D, treat weld seam cool to room temperature, use flame heating hanger composition, adopt hammering method to carry out straightening, make being of the required size of little hanger and L-type steel;
(3) what L-type steel formed with flap seat welds:
A, hanger composition is formed be assembled together with flap seat, and adopt frock to fix;
B, welding process comprise backing welding and cosmetic welding, and welding parameter is: the cerium tungsten electrode of Φ 2.0mm, and electric current is 140 ~ 170A, and gas is the argon gas of concentration 99.99%, and gas flow is 6 ~ 9L/min;
C, treat weld seam cool to room temperature, use flame heating hanger composition, adopt hammering method to carry out straightening, hanger is formed and flap seat forms is of the required size.
2. the welding procedure of motor-car dirt box hoisting structure as claimed in claim 1, is characterized in that: the material of described hoisting structure is AISI304 stainless steel; Welding material is ER308 welding wire.
3. the welding procedure of motor-car dirt box hoisting structure as claimed in claim 1, is characterized in that: described weld seam both sides 20mm is without greasy dirt, rusty stain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139217.0A CN103909322B (en) | 2014-04-08 | 2014-04-08 | The welding procedure of motor-car dirt box hoisting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139217.0A CN103909322B (en) | 2014-04-08 | 2014-04-08 | The welding procedure of motor-car dirt box hoisting structure |
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| Publication Number | Publication Date |
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| CN103909322A CN103909322A (en) | 2014-07-09 |
| CN103909322B true CN103909322B (en) | 2016-01-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3704822A (en) * | 1970-03-20 | 1972-12-05 | Nippon Kokan Kk | Apparatus for forming t-welds between mutually perpendicular plates |
| JPS6478677A (en) * | 1987-09-21 | 1989-03-24 | Ishikawajima Harima Heavy Ind | Variable shielding box for welding |
| DE102007042475A1 (en) * | 2007-09-06 | 2009-03-12 | Universal-Mb Ltd. | Automatic machine for vertical filet welding, used to join steel plates in construction and shipbuilding, includes carrier for welding equipment, pneumatic clamps and spindle drive |
| CN101497157A (en) * | 2009-02-19 | 2009-08-05 | 唐山轨道客车有限责任公司 | Assembly welding device for high-speed motor train set underframe |
| CN103495793A (en) * | 2013-10-09 | 2014-01-08 | 永升建设集团有限公司 | Improved construction method for hoisting and welding large-tonnage cast steel component complex joints |
-
2014
- 2014-04-08 CN CN201410139217.0A patent/CN103909322B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3704822A (en) * | 1970-03-20 | 1972-12-05 | Nippon Kokan Kk | Apparatus for forming t-welds between mutually perpendicular plates |
| JPS6478677A (en) * | 1987-09-21 | 1989-03-24 | Ishikawajima Harima Heavy Ind | Variable shielding box for welding |
| DE102007042475A1 (en) * | 2007-09-06 | 2009-03-12 | Universal-Mb Ltd. | Automatic machine for vertical filet welding, used to join steel plates in construction and shipbuilding, includes carrier for welding equipment, pneumatic clamps and spindle drive |
| CN101497157A (en) * | 2009-02-19 | 2009-08-05 | 唐山轨道客车有限责任公司 | Assembly welding device for high-speed motor train set underframe |
| CN103495793A (en) * | 2013-10-09 | 2014-01-08 | 永升建设集团有限公司 | Improved construction method for hoisting and welding large-tonnage cast steel component complex joints |
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| Publication number | Publication date |
|---|---|
| CN103909322A (en) | 2014-07-09 |
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