CN103909322A - Welding technology for sewage tank lifting structure of bullet train - Google Patents
Welding technology for sewage tank lifting structure of bullet train Download PDFInfo
- Publication number
- CN103909322A CN103909322A CN201410139217.0A CN201410139217A CN103909322A CN 103909322 A CN103909322 A CN 103909322A CN 201410139217 A CN201410139217 A CN 201410139217A CN 103909322 A CN103909322 A CN 103909322A
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- welding
- hanger
- weld seam
- type steel
- little
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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
Abstract
The invention relates to a welding technology for a sewage tank lifting structure of a bullet train. The welding technology is characterized by including the following steps: (1), welding small lifting lugs and weld seams, wherein length dimensions of two side plates and a bottom plate both used for welding the small lifting lugs are 2mm larger than the size as needed; (2); assembling the small lifting lugs and L-shaped steel together in a point fixation manner to acquire two lifting lug components, putting 2mm stainless steel plates under the small lifting lugs to enable the dimensions between the lower surfaces of the small lifting lugs and the lower surface of the L-shaped steel to be 2mm larger than the dimension as needed, fixing the lifting lug components together in a point manner, and welding weld seams; (3), assembling the lifting lug components and lifting seat components together and welding weld seams. By the welding technology, welding strength of the lifting lugs is improved, welding deformation is reduced, and the safe and reliable lifting structure of a tank body is guaranteed.
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 operations speed per hour is that 350 kilometers, F-Zero are 380 kilometers; Motor-car dirt box, as the water system function of car load, hangs on car body below.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 cause pitch-row and flatness overproof because of distortion, just casing is installed to car body and has caused very large impact, the technique of the welding deformation control of hanger place 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 be provided, improved hanger weld strength, reduce welding deformation, make casing there is 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 to comprise following processing step:
(1) welding of little hanger: little hanger is two blocks of side plates and a groove shape that base plate is welded, for welding two blocks of side plates of little hanger and the length dimension of a base plate than the large 2mm of required size; Detailed process is as follows:
A, groove processing: a side finished edge that first contacts one end at base plate with L-type steel;
B, will adopt frocks be assembled together for welding three corrosion resistant plates of little hanger, a side of little hanger side plate contacts with a side of base plate, and the base plate 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 6～9 L/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 ℃;
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 ℃;
(2) welding of little hanger and L-type steel:
Between the lower surface of a, little hanger and L-type steel lower surface, be of a size of B, little hanger and L-type steel point are fixedly assembled together, and below little hanger the corrosion resistant plate of 2mm on pad, make size between lower surface and the L-type steel lower surface of little hanger than the large 2mm of required size B;
B, little hanger and L-type steel are assembled together and obtain hanger composition, two groups of hangers composition points are fixed together; , by the little hanger notch of one group of hanger composition upwards, the little hanger notch of another group hanger composition is downward, and the both ends of the L-type steel of two groups of hanger compositions are fixed together respectively;
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 a 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 6～9 L/min;
Then carry out 3 road packed layer weld seams at the opposite side of little hanger and L-type steel junction, on backing weld seam, carry out 2 roads and fill out order layer weld seam, 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 ℃;
Finally on the packed layer weld seam of both sides, carry out respectively 2 road cap weld gaps, 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 ℃;
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) welding of L-type steel and flap seat composition:
A, hanger composition and flap seat composition are assembled together, 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 6～9 L/min;
C, treat weld seam cool to room temperature, use flame heating hanger composition, adopt hammering method to carry out straightening, what make that hanger composition and flap seat form 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, makes this casing have safe and reliable hoisting structure; And reduce the impact of welding deformation on lifting size and flatness, and then work difficulty and workload while reducing casing with car body installation.
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 size schematic diagram of described little hanger and flap seat composition.
Fig. 8 is the fixing schematic diagram of the point of two groups of little hangers and L-type steel assembly.
Fig. 9 is the welding schematic diagram of little hanger and L-type steel weld seam.
The specific embodiment
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 the raw material of AISI304 stainless steel as hoisting structure, select ER308 welding wire as welding material;
(2) welding of little hanger: little hanger, by two blocks of side plates and a groove shape that base plate is welded, because parts throat depth is larger, and is multilayer welding, has welded rear parts and has had contraction; Therefore, for welding two blocks of side plates of little hanger and the length dimension C of a base plate than the large 2mm of required size, as shown in Figure 2; Detailed process is as follows:
A, groove processing: first contact a side finished edge of one end with L-type steel at base plate, as shown in Figure 4, Figure 5;
B, will adopt frocks be assembled together for welding three corrosion resistant plates of little hanger, a side of little hanger side plate 11 contacts (as shown in Figure 6) with a side of base plate 12, base plate 12 sides between these two sides and the side of side plate 11 are weld seam, guarantee that weld seam both sides 20mm is without the dirt such as greasy dirt, rusty stain; In frock, weld, can reduce like this welding deformation;
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 (1a and 8a in Fig. 6), 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 6～9 L/min;
Then carry out 3 road packed layer weld seams (2a, 3a and 4a in Fig. 6), 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 ℃;
Finally carry out 3 road cap welds (5a, 6a, 7a in Fig. 6), 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 ℃;
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) welding of little hanger and L-type steel:
A, as shown in Figure 7, size A=33mm between the upper surface of the lower surface of little hanger and flap seat composition, size B=40mm between the lower surface of little hanger and L-type steel lower surface, size A is the critical size of joining in weldering process, the tolerance requiring is ± 1mm, if join weldering according to theoretical size, due to the existence of welding deformation welded after this size become 36mm; In order to guarantee this size, little hanger and L-type steel point are fixedly assembled together, and below little hanger the corrosion resistant plate of 2mm on pad, make the size B=42mm between lower surface and the L-type steel lower surface of little hanger;
B, as shown in Figure 8, is assembled together little hanger and L-type steel to obtain hanger composition, and two groups of hangers composition points are fixed together; , by the little hanger notch of one group of hanger composition upwards, the little hanger notch of another group hanger composition is downward, and the both ends of the L-type steel of two groups of hanger compositions are fixed together respectively, can reach like this effect of mutual reversible deformation;
C, as shown in Figure 9, the both sides of little hanger and L-type steel junction are weld seam, 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 (1b and 2b in Fig. 9) in a 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 6～9 L/min;
Then carry out 3 road packed layer weld seams (3b, 4b and 5b in Fig. 9) at the opposite side of little hanger and L-type steel junction, on backing weld seam, carry out 2 roads and fill out order layer weld seam (6b and 7b in Fig. 9), 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 ℃;
The last 2 road cap weld gaps (8b, 9b, 10b and 11b in Fig. 9) of carrying out respectively on the packed layer weld seam of both sides, welding parameter is: the cerium tungsten electrode of Φ 2.4mm, and electric current is 150～180A, gas is the argon gas of concentration 99.99%, gas flow is 6～9L/min, interlayer temperature≤150 ℃;
D, treat weld seam cool to room temperature, use flame to be heated to 1000 ℃ and makes hanger composition 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, the hanger composition after welding is carried out to dimension control and weld inspection, guarantee part dimension and weld seam zero defect;
(4) welding of L-type steel and flap seat composition:
A, hanger composition and flap seat composition are assembled together, and adopt frock to fix, prevent distortion;
The weld seam both sides 20mm of b, assurance 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 6～9 L/min;
C, treat weld seam cool to room temperature, use flame to be heated to 1000 ℃ and makes hanger composition be heated to shiny red, adopt hammering method to carry out straightening, what make that hanger composition and flap seat form is of the required size;
D, according to drawing requirement, the hanger composition after welding and flap seat are formed and 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 two blocks of side plates and a groove shape that base plate is welded, for welding two blocks of side plates of little hanger and the length dimension of a base plate than the large 2mm of required size; Detailed process is as follows:
A, groove processing: a side finished edge that first contacts one end at base plate with L-type steel;
B, will adopt frocks be assembled together for welding three corrosion resistant plates of little hanger, a side of little hanger side plate contacts with a side of base plate, and the base plate 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 6～9 L/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 ℃;
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 ℃;
(2) welding of little hanger and L-type steel:
Between the lower surface of a, little hanger and L-type steel lower surface, be of a size of B, little hanger and L-type steel point are fixedly assembled together, and below little hanger the corrosion resistant plate of 2mm on pad, make size between lower surface and the L-type steel lower surface of little hanger than the large 2mm of required size B;
B, little hanger and L-type steel are assembled together and obtain hanger composition, two groups of hangers composition points are fixed together; , by the little hanger notch of one group of hanger composition upwards, the little hanger notch of another group hanger composition is downward, and the both ends of the L-type steel of two groups of hanger compositions are fixed together respectively;
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 a 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 6～9 L/min;
Then carry out 3 road packed layer weld seams at the opposite side of little hanger and L-type steel junction, on backing weld seam, carry out 2 roads and fill out order layer weld seam, 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 ℃;
Finally on the packed layer weld seam of both sides, carry out respectively 2 road cap weld gaps, 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 ℃;
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) welding of L-type steel and flap seat composition:
A, hanger composition and flap seat composition are assembled together, 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 6～9 L/min;
C, treat weld seam cool to room temperature, use flame heating hanger composition, adopt hammering method to carry out straightening, what make that hanger composition and flap seat form 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; Described 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN103909322A true CN103909322A (en) | 2014-07-09 |
| CN103909322B 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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| CN103909322B (en) | 2016-01-06 |
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