CN113857639A - Automobile pipe beam welding process - Google Patents
Automobile pipe beam welding process Download PDFInfo
- Publication number
- CN113857639A CN113857639A CN202111265747.6A CN202111265747A CN113857639A CN 113857639 A CN113857639 A CN 113857639A CN 202111265747 A CN202111265747 A CN 202111265747A CN 113857639 A CN113857639 A CN 113857639A
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- 238000003466 welding Methods 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 33
- 230000006698 induction Effects 0.000 claims abstract description 37
- 239000011265 semifinished product Substances 0.000 claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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
- B23K13/00—Welding by high-frequency current heating
-
- 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
- B23K13/00—Welding by high-frequency current heating
- B23K13/01—Welding by high-frequency current heating by induction heating
- B23K13/02—Seam welding
- B23K13/025—Seam welding for tubes
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention discloses an automobile pipe beam welding process in the field of pipe beam welding, which comprises the steps of continuously conveying a metal plate strip raw material by using a rolling line, rolling and bending the metal plate strip to prepare a semi-finished product, and carrying out high-frequency induction welding on the semi-finished product by using a solid high-frequency induction welding machine and a welding clamp in the rolling and conveying process, wherein the welding frequency of the solid high-frequency induction welding machine is 280 +/-2 KHz, the welding power is 58 +/-3 KW, and the conveying speed of the rolling line is 17 m/min. The invention can solve the problems that the existing welding technology can not meet the welding requirement of the triangular tubular beam and the structural strength of the formed tubular beam product can not meet the requirement.
Description
Technical Field
The invention relates to the field of pipe beam welding, in particular to an automobile pipe beam welding process.
Background
A large number of tube beams are adopted in the automobile framework, wherein the A-column tube beam is used as a connecting column for connecting the roof and the front cabin in front of the automobile, so that personnel in the cockpit can be protected in an accident, and the requirement on the structural strength of the automobile framework is high. In order to meet the strength requirement of the A-column tubular beam, a triangular tubular beam with rounded corners at the edges is designed, a metal plate belt is rolled into a tubular shape with a welding seam along the length direction, and then the welding seam is welded to form the A-column tubular beam. The welding seam of the product is positioned at the apex edge of the triangle, the welding requirement meets the requirement that two sides of the welding seam are aligned, the quality of the welding seam formed by the welded welding seam is higher, the process for reliably welding the structure is lacked in the prior art, the welding requirement cannot be met, and the structural strength of the formed tubular beam product cannot meet the requirement.
Disclosure of Invention
The invention aims to provide an automobile tubular beam welding process to solve the problems that the existing welding technology cannot meet the welding requirements of the triangular tubular beam and the structural strength of a formed tubular beam product cannot meet the requirements.
In order to achieve the purpose, the basic technical scheme of the invention is as follows: a technology for welding the tubular beam of car includes such steps as continuously conveying the raw material of metal plate or band by roller, rolling and bending to obtain semi-finished product, high-frequency induction welding at 280 +/-2 KHz for welding power of 58 +/-3 KW and 17m/min for rolling.
The principle and the advantages of the scheme are as follows: during practical application, metal plate strip raw materials are continuously conveyed by a rolling line and are gradually rolled and formed into a semi-finished product with an isosceles triangle-shaped section in the conveying process, the top edge opening of the semi-finished product is a welding part, the semi-finished product is conveyed to a solid high-frequency induction welding machine to be heated through high-frequency induction, the heated semi-finished product is extruded by a welding fixture, the plate strip raw materials at the welding part are melted into a whole to complete welding, the welding is synchronously output on the rolling line after welding, stable and reliable welding of the plate strip raw materials in the continuous conveying process is guaranteed through the design of welding frequency, welding power and conveying speed, and the structural strength of a formed product meets requirements.
Further, the solid-state high-frequency induction welding machine comprises an induction coil and an impedor, the semi-finished product is arranged in the induction coil in a penetrating mode, the width of a gap between the induction coil and the semi-finished product is uniform, and the impedor is arranged in the semi-finished product in a penetrating mode. When the semi-finished product passes through the induction coil, induction current is generated inside the semi-finished product, the direction of the induction current in the semi-finished product is changed by the impeder, the induction current in the semi-finished product is gathered to two sides of the opening at the top, and the metal material at the opening is fully heated and melted, so that the induction welding efficiency is improved, and the welding quality is ensured.
Further, welding jig includes the base, it is connected with vertical first running roller to rotate on the base, sliding connection has left slider on the left base of first running roller, it is connected with the second running roller to rotate on the slider of a left side, sliding connection has right slider on the base on first running roller right side, sliding connection has the third running roller on the slider of the right side, sliding connection has supporting mechanism on the base, vertical sliding connection has fourth running roller and fifth running roller on the supporting mechanism, the fourth running roller is located second running roller top, the fifth running roller is located third running roller top, five running rollers enclose to close and form extrusion space. The base provides a whole bottom support, the first roller supports and shapes the bottom of the semi-finished tubular beam, the left slider supports and can be transversely adjusted for the second roller, the right slider supports and can be transversely adjusted for the third roller, the second roller supports and shapes on the left side, and the third roller supports and shapes on the right side. The fourth roller and the fifth roller provide upper extrusion shaping, and the supporting mechanism provides adjusting support for the fourth roller and the fifth roller. Five running rollers enclose to close and form the extrusion space, and the semi-manufactured goods tubular beams after the heating of welding mechanism gets into the extrusion space, and five running rollers extrude the design from five directions semi-manufactured goods tubular beams, and the semi-manufactured goods tubular beams welding seam after the heating is closed by fourth running roller and fifth running roller extrusion, and fourth running roller and fifth running roller can be followed the top both sides and are extruded the material of welding seam department and align, can effectively reliable completion tubular beams's welding.
Further, the distance between the induction coil and the second roller wheel and the distance between the induction coil and the third roller wheel are 8 +/-2 mm. Preferably, the semi-finished product can be quickly and sufficiently heated in the welding area of the semi-finished product before entering the second roller and the third roller under the action of the induction coil, so that the welding quality is ensured.
Further, the distance between the impedor and the extrusion central line between the second roller and the third roller is 25 +/-5 mm. Preferably, the impeder is capable of better concentrating the induced current on the weld fusion surface of the semi-finished product, which is beneficial to improving the induction welding efficiency.
Further, the welding process continues with a cooling water rinse at the induction coil and impeder. Preferably, the impeder and the induction coil are maintained at a low and constant temperature during the high-frequency welding process, so that the impeder has a high magnetic permeability and remains unchanged.
Furthermore, the second roller, the third roller, the fourth roller and the fifth roller are used for extruding and closing the welding seam of the semi-finished product in the welding process, the second roller and the third roller control the height of the outer welding rib at the welding seam to be less than 1.5mm, the width of the melting part at the lower end of the inner welding rib to be less than 1.6mm, and the inner contraction at the root of the inner welding rib to be less than 0.2 mm. As the preferred second running roller and the extrusion of third running roller from the side direction like this, extrude from the top through fourth running roller and fifth running roller, can be to the accurate, stable extrusion of semi-manufactured goods welding seam, the size of welding the muscle through the extrusion force control welding seam department of second running roller and third running roller, guarantee that welding seam department welds the muscle size controllable, the welding seam quality is controllable.
Furthermore, the fourth roller and the fifth roller are used for controlling the alignment of the material edges at the welding seam and the rising angle of the flow line to be 55 +/-10 degrees in the welding process. The extrusion force on the material edges at the welding seam can be controlled through the height of the fourth roller and the height of the fifth roller preferably, the material edges at two sides of the welding seam are ensured to be in butt joint neatly, the top edge of the formed tubular beam product is neat in appearance, and the forming quality is higher.
Furthermore, the second roller and the fourth roller are adjusted to be aligned with the third roller and the fifth roller in the welding process, so that the distance from the center of the weld line to the material thickness center line is less than 0.1 mm. The two sides of the welding seam can be ensured to be symmetrically formed as the optimization, and the welding seam forming quality is better.
Furthermore, the width difference of the root parts of the inner welding rib and the outer welding rib at the welding seam is controlled to be less than or equal to 0.5mm by adjusting the second roller and the third roller in the welding process. Preferably, the weld forming is controlled more stably from the side direction, and the weld forming quality is better.
Drawings
FIG. 1 is a front view of a welding fixture in an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a base 1, a first lead screw 2, a right slider 3, an ear plate 4, a third roller 5, a first roller 6, a right supporting arm 7, a fifth roller 8, a sliding rail 9, a second adjusting nut 10, a door-shaped frame 11, a first adjusting nut 12, a first bolt 13, a second bolt 14, a pressing strip 15, a supporting block 16, a fourth roller 17, a left supporting arm 18, a second roller 19 and a left slider 20.
The embodiment is basically as shown in the attached figure 1: a technology for welding the tubular beam of car includes such steps as continuously conveying the raw material of metal plate or band by roller, rolling and bending to obtain semi-finished product, high-frequency induction welding at 280 +/-2 KHz for welding power of 58 +/-3 KW and 17m/min for rolling.
The solid high-frequency induction welding machine comprises an induction coil and an impedor, wherein the semi-finished product is arranged in the induction coil in a penetrating mode, the width of a gap between the induction coil and the semi-finished product is uniform, and the impedor is arranged on the inner side of the semi-finished product in a penetrating mode. Welding jig includes base 1, is equipped with first spout and second spout on the base 1 side by side, and sliding connection has left slider 20 and right slider 3 in the first spout, and bolted connection has two otic placodes 4 on the first spout between left slider 20 and the right slider 3, and round pin hub connection has first running roller 6 between two otic placodes 4. Wear to be equipped with first lead screw 2 in the first spout, be equipped with on the first lead screw 2 and revolve to two opposite screw thread sections, left slider 20 and right slider 3 are connected with two screw thread sections on the first lead screw 2 respectively. The left slide block 20 is connected with a second roller 19 through a rotating shaft, and the right slide block 3 is connected with a third roller 5 through a rotating shaft. A sliding seat is connected in the second sliding groove in a sliding mode, a door-shaped frame 11 is connected to the sliding seat through bolts, a second lead screw is arranged in the second sliding groove, and the sliding seat is connected to the second lead screw in a threaded mode. A base is arranged on the inner side of the door-shaped frame 11 in a sliding mode, a first bolt 13 is fixed to the top of the base, and the first bolt 13 penetrates through the top of the door-shaped frame 11 and is connected with a first adjusting nut 12. The side wall of the door-shaped frame 11 close to the first sliding groove is connected with two parallel pressing strips 15 through bolts, the side ends of the pressing strips 15 are wedge-shaped, a guide groove is formed between the inclined surface of each pressing strip 15 and the side wall of the door-shaped frame 11, and a guide rail extending into the guide groove is integrally formed on the base. The base has two sets of slide rails 9 towards bolted connection side by side on the lateral wall of first spout, and the vertical setting of slide rail 9, the top bolted connection of every group slide rail 9 has the roof, and equal sliding connection has supporting shoe 16 between every group slide rail 9, and 16 top welded fastening of supporting shoe have second bolt 14, and second bolt 14 passes the roof and is connected with second adjusting nut 10. Be located integrated into one piece on left supporting shoe 16 and have left branch arm 18, integrated into one piece has right branch arm 7 on the supporting shoe 16 that is located the right side, left branch arm 18 stretches out second running roller 19 top, right branch arm 7 stretches out third running roller 5 top, the end of left branch arm 18 is connected with fourth running roller 17 through the pivot, the end of right branch arm 7 is connected with fifth running roller 8 through the pivot, fourth running roller 17 and the equal slope setting of fifth running roller 8, the wheel face that fourth running roller 17 and fifth running roller 8 are close to each other radially extends and forms the extrusion portion. The first roller 6 carries out bottom support, and the second roller 19 and the third roller 5 carry out the side direction extrusion support, and the fourth roller 17 and the fifth roller 8 provide the extrusion at top, and five rollers enclose to close like this and form the extrusion space.
The induction coil is spaced apart from the second roller 19 and the third roller 58 by + -2 mm. The impeder is 25 + -5 mm from the pinch center line between the second roller 19 and the third roller 5. The welding process was continued with a cooling water rinse at the induction coil and impeder.
The second roller 19, the third roller 5, the fourth roller 17 and the fifth roller 8 are used for extruding and closing the semi-finished welding seam in the welding process, the second roller 19 and the third roller 5 are used for controlling the height of an outer welding rib at the welding seam to be smaller than 1.5mm, the width of a melting part at the lower end of an inner welding rib to be smaller than 1.6mm, and the inner contraction at the root of the inner welding rib to be smaller than 0.2 mm. The fourth roller 17 and the fifth roller 8 are used for controlling the alignment of the material edges at the welding seam and the rising angle of the flow line is 55 +/-10 degrees. The distance from the center of the weld line to the material thickness center line is less than 0.1mm by adjusting the second roller 19 and the fourth roller 17 to be aligned with the third roller 5 and the fifth roller 8. The width difference between the root parts of the inner welding rib and the outer welding rib at the welding seam is controlled to be less than or equal to 0.5mm by adjusting the second roller 19 and the third roller 5.
The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A welding process for an automobile tubular beam is characterized by comprising the following steps: continuously conveying a metal plate strip raw material by using a rolling line, rolling and bending the metal plate strip to prepare a semi-finished product, and performing high-frequency induction welding on the semi-finished product by using a solid high-frequency induction welding machine and a welding clamp in the rolling and conveying process, wherein the welding frequency of the solid high-frequency induction welding machine is 280 +/-2 KHz, the welding power is 58 +/-3 KW, and the conveying speed of the rolling line is 17 m/min.
2. The automobile pipe beam welding process according to claim 1, wherein: the solid high-frequency induction welding machine comprises an induction coil and an impedor, wherein the semi-finished product is arranged in the induction coil in a penetrating mode, the width of a gap between the induction coil and the semi-finished product is uniform, and the impedor is arranged in the semi-finished product in a penetrating mode.
3. The automobile pipe beam welding process according to claim 2, wherein: welding jig includes the base, it is connected with vertical first running roller to rotate on the base, sliding connection has left slider on the left base of first running roller, it is connected with the second running roller to rotate on the slider of a left side, sliding connection has right slider on the base on first running roller right side, sliding connection has the third running roller on the slider of the right side, sliding connection has supporting mechanism on the base, vertical sliding connection has fourth running roller and fifth running roller on the supporting mechanism, the fourth running roller is located second running roller top, the fifth running roller is located third running roller top, five running rollers enclose to close and form the extrusion space.
4. The automobile pipe beam welding process according to claim 3, wherein: the distance between the induction coil and the second roller wheel is 8 +/-2 mm.
5. The automobile pipe beam welding process according to claim 4, wherein: the distance between the impedor and the extrusion central line between the second roller and the third roller is 25 +/-5 mm.
6. The automobile pipe beam welding process according to claim 5, wherein: the welding process was continued with a cooling water rinse at the induction coil and impeder.
7. The automobile pipe beam welding process according to claim 6, wherein: and in the welding process, the second roller, the third roller, the fourth roller and the fifth roller are used for extruding and closing the welding seam of the semi-finished product, the second roller and the third roller control the height of the outer welding rib at the welding seam to be less than 1.5mm, the width of the melting part at the lower end of the inner welding rib to be less than 1.6mm and the inner contraction at the root of the inner welding rib to be less than 0.2 mm.
8. The automobile pipe beam welding process according to claim 7, wherein: in the welding process, the fourth roller and the fifth roller are used for controlling the alignment of the material edges at the welding seam and the ascending angle of the flow line to be 55 +/-10 degrees.
9. The automobile pipe beam welding process according to claim 8, wherein: and in the welding process, the second roller and the fourth roller are adjusted to be aligned with the third roller and the fifth roller, so that the distance from the center of the weld line to the material thickness center line is less than 0.1 mm.
10. The automobile pipe beam welding process according to claim 9, wherein: in the welding process, the width difference of the root parts of the inner welding rib and the outer welding rib at the welding seam is controlled to be less than or equal to 0.5mm by adjusting the second roller and the third roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265747.6A CN113857639A (en) | 2021-10-28 | 2021-10-28 | Automobile pipe beam welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265747.6A CN113857639A (en) | 2021-10-28 | 2021-10-28 | Automobile pipe beam welding process |
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| Publication Number | Publication Date |
|---|---|
| CN113857639A true CN113857639A (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111265747.6A Pending CN113857639A (en) | 2021-10-28 | 2021-10-28 | Automobile pipe beam welding process |
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| CN (1) | CN113857639A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5862694A (en) * | 1997-08-19 | 1999-01-26 | Union Metal Corporation | Tapered tube manufacturing apparatus and process |
| CN106041288A (en) * | 2016-07-26 | 2016-10-26 | 江苏薪泽奇机械股份有限公司 | High-frequency induction welding mechanism for metal clad wire rods |
| CN109500615A (en) * | 2018-12-17 | 2019-03-22 | 凌云西南工业有限公司 | A kind of progressive forming device for the connecting column being used to form on automobile |
| CN112123248A (en) * | 2020-10-16 | 2020-12-25 | 凌云西南工业有限公司 | Clamp apparatus |
| CN112474869A (en) * | 2020-10-31 | 2021-03-12 | 济钢集团有限公司 | Three-roller extrusion device for welding sharp-angled square steel |
-
2021
- 2021-10-28 CN CN202111265747.6A patent/CN113857639A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5862694A (en) * | 1997-08-19 | 1999-01-26 | Union Metal Corporation | Tapered tube manufacturing apparatus and process |
| CN106041288A (en) * | 2016-07-26 | 2016-10-26 | 江苏薪泽奇机械股份有限公司 | High-frequency induction welding mechanism for metal clad wire rods |
| CN109500615A (en) * | 2018-12-17 | 2019-03-22 | 凌云西南工业有限公司 | A kind of progressive forming device for the connecting column being used to form on automobile |
| CN112123248A (en) * | 2020-10-16 | 2020-12-25 | 凌云西南工业有限公司 | Clamp apparatus |
| CN112474869A (en) * | 2020-10-31 | 2021-03-12 | 济钢集团有限公司 | Three-roller extrusion device for welding sharp-angled square steel |
Non-Patent Citations (2)
| Title |
|---|
| 刘爱民等: "影响高频直缝焊管工艺要素的分析", 《焊管》 * |
| 罗刚等: "用现代化焊接工艺制造高质量高频焊管", 《焊管》 * |
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Application publication date: 20211231 |