CN110919136A - Welding process for thick plate and thin plate - Google Patents
Welding process for thick plate and thin plate Download PDFInfo
- Publication number
- CN110919136A CN110919136A CN201911278470.3A CN201911278470A CN110919136A CN 110919136 A CN110919136 A CN 110919136A CN 201911278470 A CN201911278470 A CN 201911278470A CN 110919136 A CN110919136 A CN 110919136A
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- plate
- thick plate
- thick
- welding
- thin plate
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Classifications
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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
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
- B23K9/0043—Locally welding a thin plate to a thick piece
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention aims to provide a thick plate and thin plate welding process, which comprises the steps of positioning and clamping a thick plate, heating a position 1.5mm away from the welding position of the thick plate and the thin plate by 300A current, wherein the angle between a welding wire and the thick plate is 45-55 degrees, the angle is an angle far away from the direction of the welding position of the thick plate and the thin plate, heating until the thick plate gradually starts to melt, conducting heat to the welding position of the thick plate and the thin plate, detecting the temperature, welding the thin plate and the thick plate together when the temperature is the melting point of the thin plate, finally observing whether the welding position is complete, and carrying out flaw detection and strength test.
Description
Technical Field
The invention relates to the field of welding of automobile chassis parts, in particular to a welding process of thick plates and thin plates of an automobile chassis part.
Background
The welding position is very important as a processing technology in the mechanical manufacturing process; the welding is an integral body, and in the welding process, two parts need to be melted and welded together through high-temperature heating. The welding machine for the automobile chassis part comprises a thick plate and a thin plate, wherein the thick plate is heated by adopting a current of 300A, the thin plate is heated by adopting a current below 100A, but the current of 300A is certainly used for heating and welding when the thick plate and the thin plate are welded at present, but the thin plate is quickly melted under the condition, so that the welding effect is seriously influenced. Therefore, it is necessary to solve this problem.
Disclosure of Invention
In order to solve the problems, the invention provides a process for welding a thick plate and a thin plate of an automobile chassis part, which comprises the steps of positioning and clamping the thick plate, heating the position, 1.5mm away from the welding position of the thick plate and the thin plate, of the thick plate by adopting 300A current, wherein the angle between a welding wire and the thick plate is 45-55 degrees, the angle is the angle away from the direction of the welding position of the thick plate and the thin plate, heating until the thick plate gradually starts to melt, conducting heat to the welding position of the thick plate and the thin plate, detecting the temperature, welding the thin plate and the thick plate together when the temperature is the melting point of the thin plate, finally observing whether the welding position is complete, and carrying out flaw detection and strength test.
The invention aims to provide a welding process of a thick plate and a thin plate, which comprises the following steps:
the method comprises the following steps: placing the thick plate on a clamp to clamp the thick plate, and clamping the thick plate;
step two: heating the position 1.5mm away from the welding position of the thick plate and the thin plate by adopting an electric arc welding gun;
step three: heating a position 1.5mm away from the welding position of the thick plate and the thin plate by using a welding wire of an electric arc welding gun by adopting 300A current, gradually melting the thick plate when the thick plate reaches a melting point, and stopping heating;
step four: the molten heat is conducted to the welding position of the thick plate and the thin plate, and the thin plate and the welding position of the thick plate and the thin plate are contacted, so that the thin plate and the thick plate are molten and welded together;
step five: cooling the welded thick plate and thin plate, observing whether the welded part is intact, and performing flaw detection on the welded part by using a flaw detector;
step six: and (5) carrying out strength test on the welded thick plate and thin plate, and discharging after the welded thick plate and thin plate are qualified.
The further improvement lies in that: and the angle between the welding wire of the arc welding gun and the thick plate is 45-55 degrees, and the angle is an angle far away from the welding position of the thick plate and the thin plate.
The further improvement lies in that: and fourthly, detecting the temperature of the welding position of the thick plate and the thin plate before welding, and waiting for the temperature to be reduced to the melting point of the thin plate if the temperature is higher than the melting point of the thin plate, wherein the temperature is monitored at the moment in the process.
The invention has the beneficial effects that: the method comprises the steps of firstly positioning and clamping a thick plate, then heating a position, 1.5mm away from the welding position of the thick plate and a thin plate, of the thick plate by adopting 300A current, wherein the angle between a welding wire and the thick plate is 45-55 degrees, the angle is an angle far away from the direction of the welding position of the thick plate and the thin plate, heating until the thick plate gradually starts to melt, conducting heat to the welding position of the thick plate and the thin plate, detecting the temperature, welding the thin plate and the thick plate together when the temperature is the melting point of the thin plate, finally observing whether the welding position is complete, and then carrying out flaw detection and strength test.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
The embodiment provides a welding process of a thick plate and a thin plate, which comprises the following steps:
the method comprises the following steps: placing the thick plate on a clamp to clamp the thick plate, and clamping the thick plate;
step two: heating the position 1.5mm away from the welding position of the thick plate and the thin plate by adopting an electric arc welding gun;
step three: heating a position 1.5mm away from the welding position of the thick plate and the thin plate by using a welding wire of an electric arc welding gun by adopting 300A current, gradually melting the thick plate when the thick plate reaches a melting point, and stopping heating;
step four: the molten heat is conducted to the welding position of the thick plate and the thin plate, and the thin plate and the welding position of the thick plate and the thin plate are contacted, so that the thin plate and the thick plate are molten and welded together;
step five: cooling the welded thick plate and thin plate, observing whether the welded part is intact, and performing flaw detection on the welded part by using a flaw detector;
step six: and (5) carrying out strength test on the welded thick plate and thin plate, and discharging after the welded thick plate and thin plate are qualified.
And the angle between the welding wire of the arc welding gun and the thick plate is 50 degrees, and the angle is an angle far away from the welding position of the thick plate and the thin plate. And fourthly, detecting the temperature of the welding position of the thick plate and the thin plate before welding, and waiting for the temperature to be reduced to the melting point of the thin plate if the temperature is higher than the melting point of the thin plate, wherein the temperature is monitored at the moment in the process.
The method comprises the steps of firstly, positioning and clamping a thick plate, heating a position, 1.5mm away from a welding position of the thick plate and a thin plate, of the thick plate by adopting 300A current, wherein the angle between a welding wire and the thick plate is 50 degrees, the angle is an angle far away from the direction of the welding position of the thick plate and the thin plate, the thick plate is heated to gradually melt until the thick plate is welded with the thin plate, heat is conducted to the welding position of the thick plate and the thin plate, the temperature of the welding position is detected, when the temperature is the melting point of the thin plate, the thin plate and the thick plate are welded together, finally, whether the welding position is complete or not is observed, flaw detection and strength test are carried out, so that the thick plate and the thin plate can be well welded, the welding quality is ensured.
Claims (3)
1. A welding process of thick plates and thin plates is characterized in that: the method comprises the following steps:
the method comprises the following steps: placing the thick plate on a clamp to clamp the thick plate, and clamping the thick plate;
step two: heating the position 1.5mm away from the welding position of the thick plate and the thin plate by adopting an electric arc welding gun;
step three: heating a position 1.5mm away from the welding position of the thick plate and the thin plate by using a welding wire of an electric arc welding gun by adopting 300A current, gradually melting the thick plate when the thick plate reaches a melting point, and stopping heating;
step four: the molten heat is conducted to the welding position of the thick plate and the thin plate, and the thin plate and the welding position of the thick plate and the thin plate are contacted, so that the thin plate and the thick plate are molten and welded together;
step five: cooling the welded thick plate and thin plate, observing whether the welded part is intact, and performing flaw detection on the welded part by using a flaw detector;
step six: and (5) carrying out strength test on the welded thick plate and thin plate, and discharging after the welded thick plate and thin plate are qualified.
2. A process for welding thick and thin sheets as claimed in claim 1, wherein: and the angle between the welding wire of the arc welding gun and the thick plate is 45-55 degrees, and the angle is an angle far away from the welding position of the thick plate and the thin plate.
3. A process for welding thick and thin sheets as claimed in claim 1, wherein: and fourthly, detecting the temperature of the welding position of the thick plate and the thin plate before welding, and waiting for the temperature to be reduced to the melting point of the thin plate if the temperature is higher than the melting point of the thin plate, wherein the temperature is monitored at the moment in the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911278470.3A CN110919136A (en) | 2019-12-13 | 2019-12-13 | Welding process for thick plate and thin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911278470.3A CN110919136A (en) | 2019-12-13 | 2019-12-13 | Welding process for thick plate and thin plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110919136A true CN110919136A (en) | 2020-03-27 |
Family
ID=69860322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911278470.3A Pending CN110919136A (en) | 2019-12-13 | 2019-12-13 | Welding process for thick plate and thin plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110919136A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03243276A (en) * | 1990-02-21 | 1991-10-30 | Toshiba Corp | Welding method for aluminum alloys |
| JPH06198437A (en) * | 1992-12-28 | 1994-07-19 | Kawasaki Steel Corp | Horizontal butt arc welding method for metallic materials having different thickness |
| JP2002224830A (en) * | 2001-02-02 | 2002-08-13 | Honda Motor Co Ltd | Tig filler welding equipment |
| CN102581428A (en) * | 2012-02-22 | 2012-07-18 | 象王重工股份有限公司 | Ultra-thick forge piece and thin plate butt welding process |
| CN105397297A (en) * | 2015-12-07 | 2016-03-16 | 中色科技股份有限公司 | Laser welding method for aluminum alloy tailor-welded blanks with unequal thicknesses |
| CN106363282A (en) * | 2016-11-22 | 2017-02-01 | 苏州哈工众志自动化科技有限公司 | Method for overlapping welding of inconstant-thickness aluminum alloy |
-
2019
- 2019-12-13 CN CN201911278470.3A patent/CN110919136A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03243276A (en) * | 1990-02-21 | 1991-10-30 | Toshiba Corp | Welding method for aluminum alloys |
| JPH06198437A (en) * | 1992-12-28 | 1994-07-19 | Kawasaki Steel Corp | Horizontal butt arc welding method for metallic materials having different thickness |
| JP2002224830A (en) * | 2001-02-02 | 2002-08-13 | Honda Motor Co Ltd | Tig filler welding equipment |
| CN102581428A (en) * | 2012-02-22 | 2012-07-18 | 象王重工股份有限公司 | Ultra-thick forge piece and thin plate butt welding process |
| CN105397297A (en) * | 2015-12-07 | 2016-03-16 | 中色科技股份有限公司 | Laser welding method for aluminum alloy tailor-welded blanks with unequal thicknesses |
| CN106363282A (en) * | 2016-11-22 | 2017-02-01 | 苏州哈工众志自动化科技有限公司 | Method for overlapping welding of inconstant-thickness aluminum alloy |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200327 |
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| RJ01 | Rejection of invention patent application after publication |