CN112846514A - Method for judging welding quality through parameter setting of welding seam quality detection system - Google Patents
Method for judging welding quality through parameter setting of welding seam quality detection system Download PDFInfo
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- CN112846514A CN112846514A CN202011576063.3A CN202011576063A CN112846514A CN 112846514 A CN112846514 A CN 112846514A CN 202011576063 A CN202011576063 A CN 202011576063A CN 112846514 A CN112846514 A CN 112846514A
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- 238000003466 welding Methods 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000000137 annealing Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 230000035515 penetration Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000004093 laser heating Methods 0.000 claims abstract description 4
- 238000005457 optimization Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000002253 acid Substances 0.000 description 7
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005554 pickling Methods 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- 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
-
- 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
- B23K31/12—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 investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Quality & Reliability (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a method for judging welding quality through parameter setting of a welding seam quality detection system, which comprises the following steps: butting the cut sections of the strip steel after front and back cutting by a clamping device, carrying out laser heating on the butted laser beams from the operation side to the transmission side, and rolling and flattening the welding seam behind a rolling roller; the unique parameter settings of the weld detection optimization system include: setting a welding seam allowance parameter to be-1 mm, setting a height difference parameter to be-0.8 mm, setting a welding seam undercut parameter to be 0-3 mm, and setting a penetration rate to be 1.8G-60G; welding process parameters, wherein the laser power is 10-12 KW; the welding speed is 4-15 m/min; the pressure of the laser welding head is 20-80 KN; the butt joint clearance parameter is 0-0.15 mm; the preheating power is 1-12.5 KW, and the post-annealing power is 1-12.5 KW. The invention controls the welding quality and improves the stability of the welding quality.
Description
Technical Field
The invention belongs to the technical field of strip steel welding, and particularly relates to a method for judging welding quality through parameter setting of a welding seam quality detection system.
Background
The continuous pickling and continuous rolling production line is a production line for realizing continuous production by welding strip steel, and is an important technological means for improving the production efficiency and reducing the production cost of modern iron and steel enterprises. A laser welder belongs to the field of laser welding, and relates to a welding method for melting and combining weldments by using energy generated by laser. For steel with poor welding incoming material plate shape, high alloy content, high carbon equivalent and strong hardenability after welding, the hardness of a weld heat affected zone is high, the weldability is poor, and a belt breakage accident along a weld joint easily occurs in a high-tension and high-temperature environment, a general steel mill generally adopts a cup-convex experiment to verify the quality and strength of the weld joint, the production time is delayed, and which influence factor causes poor welding quality cannot be determined.
Patent CN 207746572U "online collection device for weld quality of laser welder" can be seen from its embodiment, only the online collection device is introduced, and the setting range of related detection parameters is not mentioned, which cannot provide an effective method for judging weld quality.
Disclosure of Invention
The invention aims to provide a method for judging welding quality through parameter setting of a welding quality detection system, which avoids the defect of manual experience setting of welding parameters by scientifically and reasonably setting the welding quality detection parameters, scientifically and reasonably controls the welding quality and improves the stability of the welding quality.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for judging welding quality through parameter setting of a welding seam quality detection system comprises the following steps:
the method comprises the following steps of (1) butting the cut sections of the strip steel after front and back cutting by a clamping device, setting a certain gap, carrying out laser heating on the butted laser beam from an operation side to a transmission side, and grinding and flattening the welding seam behind a grinding roller to obtain a high-strength welding seam, so that the strip steel can be continuously produced;
wherein the unique parameter settings of the weld detection optimization system include: setting a welding seam allowance parameter to be-1 mm, setting a height difference parameter to be-0.8 mm, setting a welding seam undercut parameter to be 0-3 mm, setting a penetration rate to be 1.8G-60G, determining that qualified welding seams are located within the upper and lower limit ranges after welding is completed, and determining that unqualified welding seams are not met;
welding process parameters, wherein the laser power is 10-12 KW; the welding speed is 4-15 m/min; the pressure of the laser welding head is 20-80 KN; the butt joint clearance parameter is 0-0.15 mm; the preheating power is 1-12.5 KW, and the post-annealing power is 1-12.5 KW.
The invention has the following beneficial effects: according to the method for judging the welding quality through the parameter setting of the welding quality detection system, the welding quality detection parameters are scientifically and reasonably set, the defect that the welding parameters are set through manual experience is overcome, the welding quality is scientifically and reasonably controlled, and the stability of the welding quality is improved. The requirement of the production process can be met by one-time welding, the phenomena of stopping and reducing speed caused by welding in the continuous production process are avoided, and the stability of the product quality of the production line is ensured.
Drawings
FIG. 1 is a graph of a weld quality qualification test of example 1;
FIG. 2 is a topographical view of a qualified weld of example 1;
FIG. 3 is a graph of a qualified weld inspection in example 2;
FIG. 4 is a topographical map of a qualified weld of example 2;
FIG. 5 is a graph of a qualified weld inspection in example 3;
FIG. 6 is a topographical map of a qualified weld of example 3;
FIG. 7 is a graph of a qualified weld inspection in example 4;
FIG. 8 is a topographical map of a qualified weld of example 4;
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
A method for judging welding quality through parameter setting of a welding seam quality detection system comprises the following steps:
the method comprises the following steps of (1) butting the cut sections of the strip steel after front and back cutting by a clamping device, setting a certain gap, carrying out laser heating on the butted laser beam from an operation side to a transmission side, and grinding and flattening the welding seam behind a grinding roller to obtain a high-strength welding seam, so that the strip steel can be continuously produced;
wherein the unique parameter settings of the weld detection optimization system include: setting a welding seam allowance parameter to be-1 mm, setting a height difference parameter to be-0.8 mm, setting a welding seam undercut parameter to be 0-3 mm, setting a penetration rate to be 1.8G-60G, determining that qualified welding seams are located within the upper and lower limit ranges after welding is completed, and determining that unqualified welding seams are not met;
welding process parameters, wherein the laser power is 10-12 KW; the welding speed is 4-15 m/min; the pressure of the laser welding head is 20-80 KN; the butt joint clearance parameter is 0-0.15 mm; the preheating power is 1-12.5 KW, and the post-annealing power is 1-12.5 KW.
Example 1
As shown in fig. 1 and 2, the production variety: DC01 straight carbon steel and DC01 straight carbon steel
Specification: 4.0 x 1280mm and 3.5 x 1287.
Welding the strip steel on a laser welding machine of a continuous acid rolling production line;
the welding process comprises the following steps: cutting the head and the tail of the strip steel through an inlet shear, presetting a gap value, moving a welding machine trolley to perform laser welding, and performing rolling and heat treatment on the weld;
the welding process comprises the following steps: the welding speed is 5.4m/min, the laser power is 11.8KW, the focal position is-2 mm, the pressure of a laser head is 30KN, the leveling pressure is 25KN, the preheating power is 1.3KW, the side gap of the welding operation is 0.04mm, and the side gap of the driving side is 0.04 mm;
all parameters after welding meet four requirements: the welding seam allowance parameter is set to be-1 mm, the height difference parameter is set to be-0.8 mm, the welding seam undercut parameter is set to be 0-3 mm, and the penetration rate is set to be 1.8G-60G.
The strip steel welded by the welding process passes through an acid pickling section of an acid rolling line, a loop, a withdrawal and straightening machine and a rolling mill, and a finished product is finally produced, wherein the quality of a welding seam after the strip steel is off-line is good, and no crack or damage exists.
Example 2
As shown in fig. 3 and 4, the production varieties: CR340/DP590 cold-rolled dual-phase steel and CR1000/1500HS hot-forming steel
Specification: 2.75 × 1500mm and 2.8 × 1525 mm.
Welding the strip steel by adopting a laser welding machine on a continuous production line;
the welding process comprises the following steps: cutting the head and the tail of the strip steel through an inlet shear, presetting a gap value, moving a welding machine trolley to perform laser welding, and performing rolling and heat treatment on the weld;
the welding process comprises the following steps: the welding speed is 6.6m/min, the laser power is 11.6KW, the focal position is-1.5 mm, the laser head pressure is 20KN, the leveling pressure is 20KN, the preheating power is 6.5KW, the post-annealing power is 9.1KW, the welding operation side gap is 0.03mm, and the driving side gap is 0.03 mm;
all parameters after welding meet four requirements: the welding seam allowance parameter is set to be-1 mm, the height difference parameter is set to be-0.8 mm, the welding seam undercut parameter is set to be 0-3 mm, and the penetration rate is set to be 1.8G-60G.
The strip steel welded by the welding process passes through an acid pickling section of an acid rolling line, a loop, a withdrawal and straightening machine and a rolling mill, and a finished product is finally produced, wherein the quality of a welding seam after the strip steel is off-line is good, and no crack or damage exists.
Example 3
As shown in fig. 5 and 6, the production varieties: SR250P1 cold-rolled phosphorus-containing high-strength steel dual-phase steel and CR1000/1500HS hot-formed steel
Specification: 4.0 x 1086mm and 3.2 x 1040 mm.
Welding the strip steel by adopting a laser welding machine on a continuous annealing production line;
the welding process comprises the following steps: cutting the head and the tail of the strip steel through an inlet shear, presetting a gap value, moving a welding machine trolley to perform laser welding, and performing rolling and heat treatment on the weld;
the welding process comprises the following steps: the welding speed is 4.8m/min, the laser power is 11.8KW, the focal position is-2 mm, the laser head pressure is 30KN, the leveling pressure is 30KN, the preheating power is 6.5KW, the post-annealing power is 5.1KW, the welding operation side gap is 0.04mm, and the driving side gap is 0.04 mm;
all parameters after welding meet four requirements: the welding seam allowance parameter is set to be-1 mm, the height difference parameter is set to be-0.8 mm, the welding seam undercut parameter is set to be 0-3 mm, and the penetration rate is set to be 1.8G-60G.
The strip steel welded by the welding process passes through an acid pickling section of an acid rolling line, a loop, a withdrawal and straightening machine and a rolling mill, and a finished product is finally produced, wherein the quality of a welding seam after the strip steel is off-line is good, and no crack or damage exists.
Example 4
As shown in fig. 7 and 8, the production varieties: DC01 plain carbon steel and SPCC plain carbon steel
Specification: 3.5 x 1240mm and 2.75 x 1240 mm.
Welding the strip steel by adopting a laser welding machine on a continuous annealing production line;
the welding process comprises the following steps: cutting the head and the tail of the strip steel through an inlet shear, presetting a gap value, moving a welding machine trolley to perform laser welding, and performing rolling and heat treatment on the weld;
the welding process comprises the following steps: the welding speed is 6m/min, the laser power is 11.8KW, the focal position is-2 mm, the pressure of a laser head is 20KN, the leveling pressure is 10KN, the preheating power is 2.5KW, the welding operation side gap is 0.04mm, and the driving side gap is 0.04 mm;
the parameters after welding do not meet four requirements: the height difference parameter is set to be-0.8 mm, and the actual value reaches 0.95 mm. The band steel welded by the welding process has poor welding seam quality and cracks and damages.
Claims (1)
1. A method for judging welding quality through parameter setting of a welding seam quality detection system is characterized by comprising the following steps:
the method comprises the following steps of (1) butting the cut sections of the strip steel after front and back cutting by a clamping device, setting a certain gap, carrying out laser heating on the butted laser beam from an operation side to a transmission side, and grinding and flattening the welding seam behind a grinding roller to obtain a high-strength welding seam, so that the strip steel can be continuously produced;
wherein the unique parameter settings of the weld detection optimization system include: setting a welding seam allowance parameter to be-1 mm, setting a height difference parameter to be-0.8 mm, setting a welding seam undercut parameter to be 0-3 mm, setting a penetration rate to be 1.8G-60G, determining that qualified welding seams are located within the upper and lower limit ranges after welding is completed, and determining that unqualified welding seams are not met;
welding process parameters, wherein the laser power is 10-12 KW; the welding speed is 4-15 m/min; the pressure of the laser welding head is 20-80 KN; the butt joint clearance parameter is 0-0.15 mm; the preheating power is 1-12.5 KW, and the post-annealing power is 1-12.5 KW.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941774A (en) * | 2021-11-23 | 2022-01-18 | 山东钢铁集团日照有限公司 | Method, device and equipment for setting parameter threshold of welding seam detection system and storage medium |
| CN114226939A (en) * | 2022-02-11 | 2022-03-25 | 山东钢铁集团日照有限公司 | Method for judging weld joint quality of strip steel welded by narrow lap welder |
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| CN109909615A (en) * | 2019-03-28 | 2019-06-21 | 武汉钢铁有限公司 | The laser threading welding jig and its welding method of deformed steel strip steel band |
| CN110961821A (en) * | 2018-09-30 | 2020-04-07 | 宝山钢铁股份有限公司 | Method for realizing automatic judgment and release of strip steel laser splicing weld inspection |
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2020
- 2020-12-28 CN CN202011576063.3A patent/CN112846514A/en active Pending
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| CN103542819A (en) * | 2012-07-17 | 2014-01-29 | 宝山钢铁股份有限公司 | Detection and quality judgment method for strip steel weld surface appearance |
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| JP2015219124A (en) * | 2014-05-19 | 2015-12-07 | Ｊｆｅスチール株式会社 | Method and device for detecting weld seam part of electroseamed steel pipe |
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| CN110961821A (en) * | 2018-09-30 | 2020-04-07 | 宝山钢铁股份有限公司 | Method for realizing automatic judgment and release of strip steel laser splicing weld inspection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113941774A (en) * | 2021-11-23 | 2022-01-18 | 山东钢铁集团日照有限公司 | Method, device and equipment for setting parameter threshold of welding seam detection system and storage medium |
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| CN114226939A (en) * | 2022-02-11 | 2022-03-25 | 山东钢铁集团日照有限公司 | Method for judging weld joint quality of strip steel welded by narrow lap welder |
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Application publication date: 20210528 |