CN117444443A - Steel plate point-to-point welding process and equipment - Google Patents
Steel plate point-to-point welding process and equipment Download PDFInfo
- Publication number
- CN117444443A CN117444443A CN202311294051.5A CN202311294051A CN117444443A CN 117444443 A CN117444443 A CN 117444443A CN 202311294051 A CN202311294051 A CN 202311294051A CN 117444443 A CN117444443 A CN 117444443A
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- point
- welded
- workbench
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- 238000003466 welding Methods 0.000 title claims abstract description 130
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 88
- 239000010959 steel Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000005496 tempering Methods 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 56
- 230000000630 rising effect Effects 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
Abstract
The invention relates to the field of steel plate welding, in particular to a steel plate point-to-point welding process and equipment, which comprises the following steps of (1) removing impurities and greasy dirt on a surface to be welded of a steel plate to obtain a pretreated steel plate; (2) Preheating the pretreated steel plate to obtain a preheated steel plate; (3) The two groups of pre-heated steel plates to be welded are aligned and clamped on a workbench, welding is carried out by utilizing welding equipment, and the welding speed is controlled to be 250-350mm/min; (4) Cooling the welded steel plate, tempering at high temperature, preserving heat, and cooling to room temperature. The method can reduce hardening tendency and welding stress by preheating treatment in advance, and effectively reduce the generation of welding cracks; by high-temperature tempering treatment, the welding stress is reduced, the plasticity and toughness are improved, the escape of harmful gases such as hydrogen and the like is facilitated, and the tensile strength is improved.
Description
Technical Field
The invention relates to the technical field of steel plate welding, in particular to a steel plate point-to-point welding process and equipment.
Background
Welding is a manufacturing process and technique that joins metals or other thermoplastic materials by heat, high temperature or high pressure. There are a number of sources of energy for modern welding, including gas flames, electric arcs, lasers, electron beams, friction, etc.
In the existing steel plate welding process, hydrogen is easy to gather in a welding line and a heat affected zone, so that a welding line is cold-cracked and reheat-cracked, the problems of high welding hardening tendency and high welding stress exist, and the strength of a product is seriously influenced; and the existing welding equipment is difficult to adapt to welding of gaps with various widths. For this purpose, we propose a steel plate spot welding process and apparatus.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a steel plate point-to-point welding process and equipment, overcomes the defects of the prior art, improves the tensile strength of products, and can better meet the actual welding requirements.
(II) in order to achieve the above purpose, the invention is realized by the following technical scheme: a point-to-point welding process for steel plates comprises the following steps,
(1) Removing impurities and greasy dirt on the surface to be welded of the steel plate to obtain a pretreated steel plate;
(2) Preheating the pretreated steel plate to obtain a preheated steel plate;
(3) The two groups of pre-heated steel plates to be welded are aligned and clamped on a workbench, welding is carried out by utilizing welding equipment, and the welding speed is controlled to be 250-350mm/min;
(4) Cooling the welded steel plate, tempering at high temperature, preserving heat, and cooling to room temperature.
Preferably, in the step (2), the preheating temperature is 180-220 ℃.
Preferably, in step (3), an H08Mn2SiA wire is used during the welding process.
Preferably, in the step (4), the steel plate is cooled to 80-100 ℃ before high-temperature tempering; then controlling the temperature rising speed to be 5 ℃/min, and preserving the heat for 0.5-1h at the temperature of 700-800 ℃.
The invention also provides a steel plate point-to-point welding device, which comprises a cabinet body, wherein a workbench is fixed on the cabinet body, an electric heating wire is arranged in the workbench, a clamping mechanism and a lifting mechanism are arranged on the workbench, a moving mechanism is connected to the lifting mechanism, and a welding mechanism is connected to the moving mechanism;
the welding mechanism comprises a shell, a rotating shaft is rotatably arranged on the shell, a motor II for driving the rotating shaft is arranged on the shell, a rotating column is detachably arranged on the rotating shaft, a continuous guide channel is formed in the rotating column, a guide rod is arranged in the guide channel, a connecting rod is fixed on the guide rod, a bearing rod which is slidably arranged with the shell is fixed on the connecting rod, and a welding head is arranged on the bearing rod.
Preferably, the lifting mechanism comprises a bearing plate fixed on the workbench, a slideway is arranged on the bearing plate, a sliding block is slidably arranged in the slideway, and a hydraulic rod for driving the sliding block is arranged on the bearing plate.
Preferably, the moving mechanism comprises a supporting plate fixed with the sliding block, a sliding groove is formed in the supporting plate, a moving block fixed with the shell is arranged in the sliding groove in a sliding mode, a screw rod rotationally connected with the sliding groove is arranged on the moving block in a threaded mode, and a first motor for driving the screw rod is arranged on the supporting plate.
Preferably, the two groups of clamping mechanisms are symmetrically arranged;
each group of clamping mechanism comprises two groups of electric push rods arranged on the workbench, and the movable ends of the two groups of electric push rods are fixed with the same group of clamping plates.
Preferably, the rotating shaft is provided with a slot, the rotating column is fixedly provided with an inserting block matched with the slot, and the rotating shaft is provided with a bolt for locking the inserting block.
The invention provides a steel plate point-to-point welding process and equipment, which have the following beneficial effects:
(1) The method can reduce hardening tendency and welding stress by preheating treatment in advance, and effectively reduce the generation of welding cracks; by high-temperature tempering treatment, the welding stress is reduced, the plasticity and toughness are improved, the escape of harmful gases such as hydrogen and the like is facilitated, and the tensile strength is improved.
(2) According to the invention, by adding the welding mechanism, a direct welding mode can be adopted for the condition of narrow welding gaps, and the motor II is started for the condition of wide welding gaps, so that the welding head can be driven to reciprocate in a small amplitude, and the welding head swinging back and forth can weld the steel plates with wide gaps, thereby improving the welding firmness; the welding mechanism can weld various gap widths, and can better meet actual welding requirements.
Drawings
FIG. 1 is a schematic diagram of a welding apparatus according to the present invention;
FIG. 2 is a schematic view of another view angle structure of the welding apparatus of the present invention;
FIG. 3 is a schematic view of a moving mechanism according to the present invention;
FIG. 4 is a cross-sectional view of the welding mechanism of the present invention;
FIG. 5 is a schematic diagram of a spin column according to the present invention;
FIG. 6 is a schematic diagram of a spin column of different dimensions according to the present invention.
In the figure: 1. a cabinet body; 2. a work table; 3. a lifting mechanism; 31. a carrying plate; 32. a slideway; 33. a slide block; 34. a hydraulic rod; 4. a moving mechanism; 41. a support plate; 42. a chute; 43. a screw; 44. a first motor; 45. a moving block; 5. a welding mechanism; 51. a housing; 52. a spin column; 53. a guide way; 54. a guide rod; 55. a rotating shaft; 56. a second motor; 57. a connecting rod; 58. a receiving rod; 59. welding head; 6. a clamping mechanism; 61. an electric push rod; 62. a clamping plate; 7. a slot; 8. inserting blocks; 9. and (5) a bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
As shown in fig. 1-6, a steel plate point-to-point welding device comprises a cabinet body 1, a workbench 2 is fixed on the cabinet body 1, an electric heating wire is installed in the workbench 2, a clamping mechanism 6 and a lifting mechanism 3 are arranged on the workbench 2, a moving mechanism 4 is connected to the lifting mechanism 3, and a welding mechanism 5 is connected to the moving mechanism 4. The two groups of steel plates to be welded are placed on the workbench 2, so that the surfaces to be welded are close, then the two groups of steel plates are locked by the clamping mechanism 6 for subsequent stable welding, firstly, the electric heating wire is started to preheat the workbench 2 and the steel plates on the workbench, so that the hardening tendency and the welding stress can be reduced, the generation of welding cracks can be effectively reduced, after the preheating is finished, the lifting mechanism 3 is controlled to enable the welding mechanism 5 to be positioned on a gap between the two groups of steel plates, the moving mechanism 4 is started to drive the welding mechanism 5 to slowly move, and the welding mechanism 5 can weld the two groups of steel plates together; for thicker steel sheets, double-sided welding may be performed.
The welding mechanism 5 comprises a shell 51, a rotating shaft 55 is rotatably arranged on the shell 51, a motor II 56 for driving the rotating shaft 55 is arranged on the shell 51, a rotating column 52 is detachably arranged on the rotating shaft 55, a continuous guide channel 53 is formed in the rotating column 52, a guide rod 54 is arranged in the guide channel 53, a connecting rod 57 is fixed on the guide rod 54, a bearing rod 58 which is slidably arranged with the shell 51 is fixed on the connecting rod 57, and a welding head 59 is arranged on the bearing rod 58. Wherein, for the case of narrower welding gap, a direct welding mode can be adopted, namely, the moving mechanism 4 is controlled to drive the welding head 59 to move along a straight line, so that two groups of steel plates can be welded together;
under the condition of wider welding gaps, the second motor 56 is started to drive the rotating shaft 55 to rotate, then the rotating column 52 is driven to rotate, the connecting rod 57 and the bearing rod 58 on the connecting rod 57 can be driven to reciprocate through the transmission of the guide channel 53 and the guide rod 54, so that the welding head 59 can be driven to reciprocate in a small amplitude, and the welding head 59 swinging back and forth can weld steel plates with wider gaps in the process that the moving mechanism 4 drives the welding head 59 to move, so that the welding firmness is improved;
the welding mechanism 5 can weld various gap widths, and can better meet actual welding requirements.
In this embodiment, the lifting mechanism 3 includes a bearing plate 31 fixed on the workbench 2, a slideway 32 is provided on the bearing plate 31, a sliding block 33 is slidably mounted in the slideway 32, and a hydraulic rod 34 for driving the sliding block 33 is mounted on the bearing plate 31. After the two groups of steel plates are installed, the hydraulic rod 34 is started to drive the sliding block 33 to move downwards, and then the moving mechanism 4 and the welding mechanism 5 on the moving mechanism are driven to move downwards until the welding head 59 contacts with gaps between the two groups of steel plates; similarly, after the welding is completed, the welding mechanism 5 can be moved upward by the hydraulic rod 34, and at this time, the worker can take off the welded steel plate.
In this embodiment, the moving mechanism 4 includes a support plate 41 fixed to the slider 33, a sliding groove 42 is formed in the support plate 41, a moving block 45 fixed to the housing 51 is slidably mounted in the sliding groove 42, a screw 43 rotatably connected to the sliding groove 42 is mounted on the moving block 45, and a first motor 44 for driving the screw 43 is mounted on the support plate 41. The first motor 44 is started to drive the screw 43 to rotate, and then drive the moving block 45 to move, so that the welding mechanism 5 can be driven to move along the straight line to finish welding of the steel plate.
In the embodiment, two groups of clamping mechanisms 6 are arranged, and the two groups of clamping mechanisms 6 are symmetrically arranged; each group of clamping mechanism 6 comprises two groups of electric push rods 61 arranged on the workbench 2, and the movable ends of the two groups of electric push rods 61 are fixed with the same group of clamping plates 62. After the steel plates are aligned and located below the welding mechanism 5, the worker starts the electric push rods 61 on two sides to drive the clamping plates 62 on two sides to move inwards, so that the steel plates can be locked, and the stability during welding is improved.
Further, a slot 7 is formed on the rotating shaft 55, an insert 8 matched with the slot 7 is fixed on the rotating column 52, and a bolt 9 for locking the insert 8 is arranged on the rotating shaft 55. The bolt 9 is unscrewed, the insert block 8 is pulled out of the slot 7, the rotary column 52 can be taken down, and the rotary column 52 can be installed by reverse operation;
the welding head 59 can be welded by adopting a small-size rotating column 52 with a slightly wider facing gap and smaller swing amplitude; the large-size rotating column 52 is adopted to make the swing amplitude of the welding head 59 larger so as to finish welding, and the practicability is better.
Example 2
A point-to-point welding process for steel plates comprises the following steps,
(1) Removing impurities and greasy dirt on the surface to be welded of the steel plate to obtain a pretreated steel plate;
(2) Preheating the pretreated steel plate to 200 ℃ to obtain a preheated steel plate;
(3) The method comprises the steps of aligning and clamping two groups of preheated steel plates to be welded on a workbench, and welding by using welding equipment, wherein in the welding process, H08Mn2SiA welding wires are adopted, and the welding speed is controlled to be 300mm/min;
(4) Cooling the welded steel plate to 100 ℃, tempering at high temperature, preserving heat, and cooling to room temperature. Wherein, the temperature rising speed is controlled to be 5 ℃/min, and the temperature is kept for 0.5h at 750 ℃.
Example 3
A point-to-point welding process for steel plates comprises the following steps,
(1) Removing impurities and greasy dirt on the surface to be welded of the steel plate to obtain a pretreated steel plate;
(2) Preheating the pretreated steel plate to 180 ℃ to obtain a preheated steel plate;
(3) The method comprises the steps of aligning and clamping two groups of preheated steel plates to be welded on a workbench, and welding by using welding equipment, wherein in the welding process, H08Mn2SiA welding wires are adopted, and the welding speed is controlled to be 320mm/min;
(4) Cooling the welded steel plate to 90 ℃, tempering at high temperature, preserving heat, and cooling to room temperature. Wherein, the temperature rising speed is controlled to be 5 ℃/min, and the temperature is kept for 0.7h at 730 ℃.
Comparative example 1
A point-to-point welding process for steel plates comprises the following steps,
(1) Removing impurities and greasy dirt on the surface to be welded of the steel plate to obtain a pretreated steel plate;
(2) The method comprises the steps of aligning and clamping two groups of pre-treated steel plates to be welded on a workbench, and welding by using welding equipment, wherein in the welding process, H08Mn2SiA welding wires are adopted, and the welding speed is controlled to be 320mm/min;
(3) Cooling the welded steel plate to 90 ℃, tempering at high temperature, preserving heat, and cooling to room temperature. Wherein, the temperature rising speed is controlled to be 5 ℃/min, and the temperature is kept for 0.7h at 730 ℃.
Comparative example 2
A point-to-point welding process for steel plates comprises the following steps,
(1) Removing impurities and greasy dirt on the surface to be welded of the steel plate to obtain a pretreated steel plate;
(2) Preheating the pretreated steel plate to 180 ℃ to obtain a preheated steel plate;
(3) The method comprises the steps of aligning and clamping two groups of preheated steel plates to be welded on a workbench, and welding by using welding equipment, wherein in the welding process, H08Mn2SiA welding wires are adopted, and the welding speed is controlled to be 320mm/min;
(4) And cooling the welded steel plate to room temperature.
Comparative example 3
A point-to-point welding process for steel plates comprises the following steps,
(1) Removing impurities and greasy dirt on the surface to be welded of the steel plate to obtain a pretreated steel plate;
(2) The method comprises the steps of aligning and clamping two groups of pre-treated steel plates to be welded on a workbench, and welding by using welding equipment, wherein in the welding process, H08Mn2SiA welding wires are adopted, and the welding speed is controlled to be 320mm/min;
(3) And cooling the welded steel plate to room temperature.
Quality inspection
1. The products of examples 2 to 3 and comparative examples 1 to 3 (unified thickness of 10 mm) were subjected to strength test by using an electronic universal tester, and specific results are shown in the following table.
TABLE 1 tensile Strength
| Group of | Tensile strength/MPa |
| Example 2 | 574.7 |
| Example 3 | 586.3 |
| Comparative example 1 | 552.4 |
| Comparative example 2 | 530.9 |
| Comparative example 3 | 510.6 |
All kinds of parts used in the application file are standard parts, the standard parts can be purchased from the market, the specific connection mode of all parts adopts conventional means such as mature bolts, rivets and welding in the prior art, and the mechanical, part and electrical equipment all adopt conventional models in the prior art.
The embodiments of the present invention are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various extensions and modifications can be made without departing from the spirit of the present invention.
Claims (9)
1. A steel plate point-to-point welding process is characterized by comprising the following steps,
(1) Removing impurities and greasy dirt on the surface to be welded of the steel plate to obtain a pretreated steel plate;
(2) Preheating the pretreated steel plate to obtain a preheated steel plate;
(3) The two groups of pre-heated steel plates to be welded are aligned and clamped on a workbench, welding is carried out by utilizing welding equipment, and the welding speed is controlled to be 250-350mm/min;
(4) Cooling the welded steel plate, tempering at high temperature, preserving heat, and cooling to room temperature.
2. A process for spot welding of steel sheets as claimed in claim 1 wherein in step (2) said preheating temperature is 180-220 ℃.
3. A steel plate spot welding process as claimed in claim 1 wherein in step (3) an H08Mn2SiA wire is used during the welding process.
4. The process for spot-welding steel sheets according to claim 1, wherein in the step (4), the steel sheets are cooled to 80-100 ℃ before tempering at high temperature; then controlling the temperature rising speed to be 5 ℃/min, and preserving the heat for 0.5-1h at the temperature of 700-800 ℃.
5. The steel plate point-to-point welding equipment is characterized by comprising a cabinet body (1), wherein a workbench (2) is fixed on the cabinet body (1), an electric heating wire is arranged in the workbench (2), a clamping mechanism (6) and a lifting mechanism (3) are arranged on the workbench (2), a moving mechanism (4) is connected to the lifting mechanism (3), and a welding mechanism (5) is connected to the moving mechanism (4);
the welding mechanism (5) comprises a shell (51), a rotating shaft (55) is rotatably arranged on the shell (51), a motor II (56) for driving the rotating shaft (55) is arranged on the shell (51), a rotating column (52) is detachably arranged on the rotating shaft (55), a continuous guide channel (53) is arranged on the rotating column (52), a guide rod (54) is arranged in the guide channel (53), a connecting rod (57) is fixed on the guide rod (54), a bearing rod (58) which is slidably arranged with the shell (51) is fixed on the connecting rod (57), and a welding head (59) is arranged on the bearing rod (58).
6. A steel plate spot-welding apparatus as claimed in claim 5, wherein the lifting mechanism (3) comprises a carrier plate (31) fixed on the table (2), a slide (32) is provided on the carrier plate (31), a slider (33) is slidably mounted on the slide (32), and a hydraulic rod (34) for driving the slider (33) is mounted on the carrier plate (31).
7. A steel plate spot-welding apparatus as set forth in claim 5 wherein the moving mechanism (4) comprises a support plate (41) fixed to the slide block (33), a slide groove (42) is provided on the support plate (41), a moving block (45) fixed to the housing (51) is slidably mounted in the slide groove (42), a screw (43) rotatably connected to the slide groove (42) is screwed to the moving block (45), and a motor one (44) for driving the screw (43) is mounted on the support plate (41).
8. A steel plate spot welding apparatus as claimed in claim 5, wherein said clamping means (6) are provided in two groups, the clamping means (6) of two groups being symmetrically arranged;
each group of clamping mechanism (6) comprises two groups of electric push rods (61) arranged on the workbench (2), and the movable ends of the two groups of electric push rods (61) are fixed with the same group of clamping plates (62).
9. The steel plate point-to-point welding equipment according to claim 5, wherein the rotating shaft (55) is provided with a slot (7), the rotating column (52) is fixedly provided with an inserting block (8) matched with the slot (7), and the rotating shaft (55) is provided with a bolt (9) for locking the inserting block (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311294051.5A CN117444443A (en) | 2023-10-09 | 2023-10-09 | Steel plate point-to-point welding process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311294051.5A CN117444443A (en) | 2023-10-09 | 2023-10-09 | Steel plate point-to-point welding process and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117444443A true CN117444443A (en) | 2024-01-26 |
Family
ID=89582573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311294051.5A Pending CN117444443A (en) | 2023-10-09 | 2023-10-09 | Steel plate point-to-point welding process and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117444443A (en) |
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2023
- 2023-10-09 CN CN202311294051.5A patent/CN117444443A/en active Pending
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