CN114473181A - Laser device for improving quality of welding seam of lap joint electric resistance welding machine - Google Patents
Laser device for improving quality of welding seam of lap joint electric resistance welding machine Download PDFInfo
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- CN114473181A CN114473181A CN202210137671.7A CN202210137671A CN114473181A CN 114473181 A CN114473181 A CN 114473181A CN 202210137671 A CN202210137671 A CN 202210137671A CN 114473181 A CN114473181 A CN 114473181A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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Abstract
A laser device for improving the weld joint quality of a lap resistance welding machine relates to the field of cold rolled silicon steel processing. This improve laser device of overlap joint resistance welding machine welding seam quality includes the welding carriage that can follow the rectilinear direction removal and is fixed in the welding frame of welding carriage, welding frame's top and bottom are connected with upper surface laser head and lower surface laser head through last frock clamp and lower frock clamp respectively, upper surface laser head and lower surface laser head are for the plane symmetric arrangement in order to locating belted steel upper surface and lower surface emission laser in the plane, welding frame still is connected with respectively with upper surface laser head and lower surface laser head through the optic fibre laser generator of fiber cable connection and the electrical control box of being connected with optic fibre laser generator one-to-one. The application provides an improve laser device of overlap joint resistance welding machine welding seam quality can high efficiency get rid of steel sheet surface impurity and add thermal treatment in advance to the steel sheet to improve overlap joint resistance welding machine welding seam quality.
Description
Technical Field
The application relates to the field of cold-rolled silicon steel processing, in particular to a laser device for improving the weld quality of a lap joint resistance welding machine.
Background
The continuous annealing heat treatment production operation of silicon steel has high requirements on the welding quality of the welding seam of the strip steel, because the annealing process is after the rolling process, the impurities such as oil stain, rust spot and coating existing on the surface of the silicon steel strip steel easily cause the resistance value change between strip steel layers to be uneven when the strip steel is lapped and resistance is welded, the welding current changes, and when the welding quality of the welding seam is unstable, the probability of strip breakage when the welding seam passes through a unit is increased, and huge economic loss is caused.
The existing processing method is that a unit operator manually polishes the surface of a steel plate by using abrasive paper for processing, and has the defects of high safety risk and easy hand injury safety accidents caused by the contact of people and strip steel; in order to ensure effective contact, the polishing area is large, and the labor intensity of workers is high. In addition, the Japanese TMEIC welding machine adopts a mechanical brushing mode of an upper brush wheel and a lower brush wheel to process the surface of a steel plate, and the welding belt head is ground and brushed to remove impurities through transverse movement of the welding machine, so that the defects that the strip steel is easily extruded, the abrasion and replacement frequency of the brush wheels is high, the equipment has more faults, and the production efficiency is influenced are overcome.
Meanwhile, mechanical residual stress exists in the silicon steel plate after rolling and shearing, which influences resistance fusion welding, and the surface of the steel plate needs to be preheated to eliminate the residual stress on the surface of the steel plate, so that the quality of a welding seam is improved during welding, and the welding stability is improved. The existing treatment method adopts an electromagnetic induction preheating device, and has higher cost.
Therefore, there is a need for an inexpensive apparatus for treating steel sheets to relieve residual stresses and improve weld quality.
Disclosure of Invention
An object of the application is to provide a laser device for improving lap joint resistance welder weld quality, can high efficiency get rid of steel sheet surface impurity and add thermal treatment in advance to the steel sheet to improve lap joint resistance welder weld quality, avoid operation personnel and belted steel direct contact, alleviate workman intensity of labour and improved the operation security.
The embodiment of the application is realized as follows:
the embodiment of the application provides a improve laser device of overlap joint resistance welding machine welding seam quality, it is including the welding carriage that can follow the rectilinear direction removal and be fixed in the welding frame of welding carriage, welding frame's top and bottom are connected with upper surface laser head and lower surface laser head through last frock clamp and lower frock clamp respectively, upper surface laser head and lower surface laser head are for the plane of level symmetrical arrangement in order to locating belted steel upper surface and lower surface emission laser in the horizontal plane, welding frame still is connected with respectively with upper surface laser head and lower surface laser head through the optic fibre laser generator of optic fibre cable connection and the electrical control box of being connected with optic fibre laser generator one-to-one.
In some alternative embodiments, the distance between the upper surface laser head and the lower surface laser head and the upper surface and the lower surface of the horizontal plane are respectively 250 mm and 300mm and 150 mm and 200 mm.
In some alternative embodiments, the upper surface laser head and the lower surface laser head are at distances of 254mm and 160mm from the upper and lower surfaces of the horizontal plane, respectively.
In some optional embodiments, the welding frame is further connected with a strip edge inspection device for detecting the end of the strip.
In some optional embodiments, the strip edge inspection device comprises a laser transmitter and a laser receiver respectively connected to the top and the bottom of the welding frame, and the laser receiver is used for receiving laser emitted by the laser transmitter and transmitting a laser signal.
In some optional embodiments, the fiber laser generator has a central wavelength of 1055-1070nm, an average power of 100W or more, a repetition frequency of 1-1000KHz, a full power frequency range of 66-1000KHz, a pulse width of 10-400ns, a single pulse energy of 1.5mJ, an output power adjustment range of 0% -100%, a beam mass of (M2) < 1.6, an output spot diameter of 6-9mm, an output beam ellipticity of > 90%, an output beam offset of < 1.0mm, an output beam divergence angle of < 0.5mrad, and a power stability of < 3%.
In some alternative embodiments, the upper surface laser head and the lower surface laser head emit laser light with a focused spot diameter of 0.1 to 0.15 mm.
The beneficial effect of this application is: the application provides an improve laser device of overlap joint resistance welding machine welding seam quality includes the welding carriage that can follow the rectilinear direction removal and is fixed in the welding frame of welding carriage, welding frame's top and bottom are connected with upper surface laser head and lower surface laser head through last frock clamp and lower frock clamp respectively, upper surface laser head and lower surface laser head are for the horizontal plane symmetrical arrangement in order to locating belted steel upper surface and lower surface emission laser in the horizontal plane, welding frame still is connected with respectively with upper surface laser head and lower surface laser head through the optic fibre laser generator of fiber optic cable connection and the electrical control box of being connected with optic fibre laser generator one-to-one. The application provides an improve laser device of overlap joint resistance welding machine welding seam quality can high efficiency get rid of steel sheet surface impurity and add thermal treatment in advance to the steel sheet to improve overlap joint resistance welding machine welding seam quality, avoid operation personnel and belted steel direct contact, alleviate workman intensity of labour and improved the operation security.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic partial structural diagram of a laser device for improving the quality of a weld joint of a lap resistance welding machine according to an embodiment of the present application.
In the figure: 100. welding a trolley; 110. welding the frame; 120. mounting a tool clamp; 130. a lower tool clamp; 140. an upper surface laser head; 150. a lower surface laser head; 160. a fiber optic cable; 170. a fiber laser generator; 180. an electrical control box; 190. a laser transmitter; 200. a laser receiver.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The characteristics and performance of the laser device for improving the weld quality of the lap resistance welding machine according to the present application will be described in further detail with reference to the following examples.
As shown in fig. 1, the embodiment of the present application provides a laser device for improving the quality of a weld joint of a lap resistance welding machine, which includes a welding trolley 100 capable of moving in a linear direction and a welding frame 110 fixed to the welding trolley 100, wherein the top and the bottom of the welding frame 110 are respectively connected with an upper surface laser head 140 and a lower surface laser head 150 through an upper tool clamp 120 and a lower tool clamp 130, the upper surface laser head 140 and the lower surface laser head 150 are symmetrically arranged relative to a horizontal plane to emit laser to the upper surface and the lower surface of a strip steel arranged in the horizontal plane, the welding frame 110 is further connected with an optical fiber laser generator 170 respectively connected with the upper surface laser head 140 and the lower surface laser head through an optical fiber cable 160, and an electrical control box 180 connected with the optical fiber laser generator 170 in a one-to-one correspondence; the distances from the upper surface laser head 140 and the lower surface laser head 150 to the upper surface and the lower surface of the horizontal plane are 254mm and 160mm, respectively. The welding frame 110 is further connected with a strip steel edge inspection device for detecting the end part of the strip steel, the strip steel edge inspection device comprises a laser transmitter 190 and a laser receiver 200 which are respectively connected to the top and the bottom of the welding frame 110, and the laser receiver 200 is used for receiving laser emitted by the laser transmitter 190 and transmitting a laser signal; the center wavelength of the fiber laser generator 170 is 1055-1070nm, the average power is more than or equal to 100W, the repetition frequency is 1-1000KHz, the full power frequency range is 66-1000KHz, the set pulse width is 10-400ns, the single pulse energy is 1.5mJ, the output power adjustment range is 0-100%, the beam quality is (M2) < 1.6, the output spot diameter is 6-9mm, the output beam ellipticity is more than 90%, the output beam offset is less than 1.0mm, the output beam divergence angle is less than 0.5mrad, the power stability is less than 3%, and the focused spot diameter of the laser emitted by the upper surface laser head 140 and the lower surface laser head 150 is 0.12 mm.
When the laser device for improving the welding seam quality of the lap resistance welding machine provided by the embodiment of the application is used, after the head and the tail of the steel strip to be lapped are spliced by the clamp of the welding machine, the welding trolley 100 is controlled to move along the linear direction, when the strip edge inspection device connected to the welding frame 110 of the welding carriage 100 detects the end of the strip, sends a signal instruction to control the two electrical control boxes 180 to respectively start the two fiber laser generators 170 and send laser to the upper surface and the lower surface of the steel plate with steel through the upper surface laser head 140 and the lower surface laser head 150 for surface cleaning and preheating operation, when the welding tractor 100 moves in the linear direction to the end part of the other end of the strip steel detected by the edge finding, a signal instruction is sent out, the two electrical control boxes 180 are controlled to respectively close the two optical fiber laser generators 170 so as to close the two optical fiber laser generators 170, and the welding machine continues to move next step to lap the head and the tail of the strip steel plate and perform welding.
The working principle of the strip steel edge inspection device is that the laser emitter 190 connected to the top of the welding frame 110 emits laser, and the laser receiver 200 connected to the bottom of the welding frame 110 receives the laser, and when the laser receiver 200 receives or cannot receive the laser emitted by the laser emitter 190, the laser emitted by the laser emitter 190 is located at the edge of the end of the strip steel.
The upper surface laser head 140 and the lower surface laser head 150 emit laser to the upper surface and the lower surface of the steel plate of the strip steel for surface cleaning and preheating operation, the laser is absorbed by an impurity layer on the surface of the steel plate to be treated, and the absorption of large energy forms sharply expanded plasma (highly ionized unstable gas) shock waves, which can change the impurities such as oil stain, iron powder and coating on the surface of the steel plate into fragments and remove the fragments, thereby cleaning the surface of the steel plate of the strip steel, the upper surface laser head 140 and the lower surface laser head 150 have the characteristics of available first pulse, stable output peak value, large pulse energy, high peak power, good light beam quality, high repetition frequency and the like, and are ideal light sources for realizing high-speed cleaning; when the laser beams emitted by the upper surface laser head 140 and the lower surface laser head 150 move at the speed of 10mm/s, the steel plate with the thickness of less than 0.5mm can be rapidly heated to about 200 ℃, and the effect of preheating before welding and eliminating the internal stress is achieved; an optical component is arranged in the upper surface laser head 140 and the lower surface laser head 150 and is a vibrating mirror, when the upper surface laser head 140 and the lower surface laser head 150 work, the vibrating mirror can perform high-frequency vibration to reflect laser to be linear laser beam output, and when the output laser energy stays in a certain interval, the surface of a steel plate can generate heat energy due to energy concentration to realize a preheating function.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (7)
1. The utility model provides an improve laser device of overlap joint resistance welder welding seam quality, its characterized in that, it includes the welding carriage that can follow the rectilinear direction and remove and is fixed in welding carriage's welding frame, welding frame's top and bottom are connected with upper surface laser head and lower surface laser head through last frock clamp respectively with lower frock clamp, the upper surface laser head with the lower surface laser head for the horizontal plane symmetrical arrangement in order to locating belted steel upper surface and lower surface emission laser in the horizontal plane, welding frame still be connected with respectively with the upper surface laser head with the lower surface laser head pass through fiber laser generator that fiber optic cable connects and with the electrical control box that fiber laser generator one-to-one is connected.
2. The laser device for improving the weld quality of a lap resistance welding machine as claimed in claim 1, wherein the distances between the upper surface laser head and the lower surface laser head and the upper surface and the lower surface of the horizontal plane are respectively 250-300mm and 150-200 mm.
3. The laser device for improving the weld quality of a lap resistance welding machine according to claim 1, wherein the distances between the upper surface laser head and the lower surface laser head and the upper surface and the lower surface of the horizontal plane are 254mm and 160mm, respectively.
4. The laser device for improving the weld quality of the lap resistance welding machine according to claim 1, wherein the welding frame is further connected with a strip steel edge inspection device for detecting the end part of the strip steel.
5. The laser device for improving the weld quality of the lap resistance welding machine according to claim 4, wherein the strip edge inspection device comprises a laser transmitter and a laser receiver which are respectively connected to the top and the bottom of the welding frame, and the laser receiver is used for receiving laser emitted by the laser transmitter and transmitting laser signals.
6. The laser device for improving the weld quality of a lap resistance welding machine according to claim 1, wherein the center wavelength of the fiber laser generator is 1055-1070nm, the average power is not less than 100W, the repetition frequency is 1-1000KHz, the full power frequency range is 66-1000KHz, the set pulse width is 10-400ns, the single pulse energy is 1.5mJ, the output power adjustment range is 0-100%, the beam quality is (M2) < 1.6, the output spot diameter is 6-9mm, the output beam ellipticity is > 90%, the output beam offset is < 1.0mm, the output beam divergence angle is < 0.5mrad, and the power stability is < 3%.
7. The laser device for improving the weld quality of a lap resistance welding machine according to claim 1, wherein the focused spot diameter of the laser emitted by the upper surface laser head and the lower surface laser head is 0.1-0.15 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210137671.7A CN114473181A (en) | 2022-02-15 | 2022-02-15 | Laser device for improving quality of welding seam of lap joint electric resistance welding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210137671.7A CN114473181A (en) | 2022-02-15 | 2022-02-15 | Laser device for improving quality of welding seam of lap joint electric resistance welding machine |
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| CN114473181A true CN114473181A (en) | 2022-05-13 |
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| CN202210137671.7A Pending CN114473181A (en) | 2022-02-15 | 2022-02-15 | Laser device for improving quality of welding seam of lap joint electric resistance welding machine |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11319911A (en) * | 1998-05-14 | 1999-11-24 | Nippon Steel Corp | Continuous welding method of band steel plate welded in longitudinal direction and welding equipment |
| CN103894836A (en) * | 2012-12-25 | 2014-07-02 | 武汉凯奇特种焊接设备有限责任公司 | Welding machine combining electric resistance welding and laser welding |
| CN107598371A (en) * | 2017-09-21 | 2018-01-19 | 中国科学院长春光学精密机械与物理研究所 | A kind of welding method of coppersmith part |
| CN111318807A (en) * | 2020-03-11 | 2020-06-23 | 邯郸钢铁集团有限责任公司 | Online slag removing device and method for welding wheel of laser welding machine |
| CN111545906A (en) * | 2020-05-13 | 2020-08-18 | 南京航空航天大学 | Mirror image laser welding device and method for optimizing weld joint molten pool forming |
| CN213827507U (en) * | 2020-11-24 | 2021-07-30 | 武汉宝悍焊接设备有限公司 | Strip steel production line laser strip removing coating device |
-
2022
- 2022-02-15 CN CN202210137671.7A patent/CN114473181A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11319911A (en) * | 1998-05-14 | 1999-11-24 | Nippon Steel Corp | Continuous welding method of band steel plate welded in longitudinal direction and welding equipment |
| CN103894836A (en) * | 2012-12-25 | 2014-07-02 | 武汉凯奇特种焊接设备有限责任公司 | Welding machine combining electric resistance welding and laser welding |
| CN107598371A (en) * | 2017-09-21 | 2018-01-19 | 中国科学院长春光学精密机械与物理研究所 | A kind of welding method of coppersmith part |
| CN111318807A (en) * | 2020-03-11 | 2020-06-23 | 邯郸钢铁集团有限责任公司 | Online slag removing device and method for welding wheel of laser welding machine |
| CN111545906A (en) * | 2020-05-13 | 2020-08-18 | 南京航空航天大学 | Mirror image laser welding device and method for optimizing weld joint molten pool forming |
| CN213827507U (en) * | 2020-11-24 | 2021-07-30 | 武汉宝悍焊接设备有限公司 | Strip steel production line laser strip removing coating device |
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