CN111975201B - Steel strip threading welding method - Google Patents
Steel strip threading welding method Download PDFInfo
- Publication number
- CN111975201B CN111975201B CN202010601599.XA CN202010601599A CN111975201B CN 111975201 B CN111975201 B CN 111975201B CN 202010601599 A CN202010601599 A CN 202010601599A CN 111975201 B CN111975201 B CN 111975201B
- Authority
- CN
- China
- Prior art keywords
- steel
- belt
- steel strip
- strip
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- 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
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The invention relates to a steel strip threading welding method. The welding method comprises the following steps: the first steel belt and the second steel belt are sequentially transported on a conveying roller way according to the process flow; after the tail part of the first steel belt moves to a first set position, controlling the first steel belt to stop conveying; after the head of the second steel belt moves to a second set position, controlling the second steel belt to stop conveying, wherein the second set position is located on the rear side of the first set position in the process flow direction; the steel type of the third steel plate is different from that of the first steel belt and the second steel belt, and the third steel plate is controlled to be arranged between the tail part of the first steel belt and the head part of the second steel belt; welding two ends of a third steel plate with the tail of the first steel belt and the head of the second steel belt respectively; and controlling the tail part of the welded first steel strip and the second steel strip to be continuously transported on the conveying roller way. The invention can improve the mechanical property of the welding line, reduce the belt breakage accidents of the welding line in the wearing process and improve the production efficiency and the yield of the unit.
Description
Technical Field
The invention belongs to the technical field of welding, and particularly relates to a steel strip threading welding method.
Background
The threading welding of the steel strip is one of the key technologies of cold-rolled sheet production, and means that the head of the current steel strip and the tail of the previous steel strip are welded together in production lines of cold-rolling pickling, continuous annealing, galvanizing and the like, so that the steel strip is ensured to continuously pass through a unit, and the purpose of continuous production is achieved.
Because the steel belt is subjected to complex stress processes such as repeated stretching, bending and the like in production, if the mechanical property of the welding seam between the head of the current steel belt and the tail of the previous steel belt is poor, the welding seam is easy to have a belt breakage accident in the production process, and the production efficiency and the yield of a unit are directly influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a steel strip threading welding method, which aims to solve the technical problems that the mechanical property of the welding seam between the head of the current steel strip and the tail of the previous steel strip is poor, the strip breakage accident of the welding seam occurs in the production process, and the production efficiency and the yield of a unit are directly influenced.
The technical scheme of the invention is as follows:
a method of threading welding a steel strip, the welding method comprising:
providing a first steel belt and a second steel belt which are the same in steel type, wherein the first steel belt and the second steel belt are sequentially transported on a conveying roller way according to the process flow;
after the tail of the first steel belt moves to a first set position, controlling the first steel belt to stop conveying;
after the head of the second steel belt runs to a second set position, controlling the second steel belt to stop conveying, wherein the second set position is located on the rear side of the first set position in the process flow direction;
providing a third steel plate, wherein the third steel plate is easy to weld, the steel type of the third steel plate is different from the steel types of the first steel belt and the second steel belt, and the third steel plate is controlled to be arranged between the tail part of the first steel belt and the head part of the second steel belt;
welding two ends of the third steel plate with the tail part of the first steel belt and the head part of the second steel belt respectively;
and controlling the tail part of the first steel strip and the second steel strip which are welded to be continuously transported on the conveying roller way.
Further, after the tail of the first steel belt runs to a first set position, the first steel belt is controlled to stop conveying, and the method specifically comprises the following steps:
the first set position is provided with a first position sensor, when the tail of the first steel strip runs to the first set position, the first position sensor sends a first reaching signal to the controller, the controller sends a first stopping instruction to the first pinch roll, and the first pinch roll stops running to enable the first steel strip to stop conveying.
Further, after the head of the second steel belt moves to a second setting position, controlling the second steel belt to stop conveying specifically comprises:
and a second position sensor is arranged at the second set position, when the head of the second steel strip runs to the second set position, the second position sensor sends a second reaching signal to the controller, the controller sends a second stopping instruction to the second pinch roll, and the second pinch roll stops running to stop conveying the second steel strip.
Further, controlling the third steel plate to be arranged between the tail portion of the first steel strip and the head portion of the second steel strip specifically includes:
and a plurality of third steel plates are stacked outside the conveying roller way, and are sequentially arranged on the conveying roller way between the tail part of the first steel belt and the head part of the second steel belt according to the welding production rhythm by utilizing a feeding robot.
Further, the welding the two ends of the third steel plate with the tail of the first steel strip and the head of the second steel strip respectively specifically includes:
a first clamp and a second clamp are respectively arranged between the first setting position and the second setting position, and the second clamp and the first clamp are sequentially arranged along the process flow direction;
when the third steel plate is arranged between the tail of the first steel belt and the head of the second steel belt, the first clamp clamps one end, facing the first steel belt, of the third steel plate, the second clamp clamps one end, facing the second steel belt, of the third steel plate, and welding between the third steel plate and the tail of the first steel belt and between the third steel plate and the head of the second steel belt is completed through a welding machine.
Further, after the welding of the two ends of the third steel plate with the tail portion of the first steel strip and the head portion of the second steel strip, the method further includes:
and a shearing machine is arranged outside the conveying roller way, and the shearing machine is used for shearing the third steel plate with the welding seam at the tail part of the first steel belt and the welding seam at the head part of the second steel belt respectively.
Further, the tensile strength of the third steel sheet is not less than 50% of the tensile strength of the first steel sheet and the second steel sheet.
Further, the width difference between the third steel plate and the first steel belt is less than 200mm, the distance between the tail part of the first steel belt and the head part of the first steel belt is matched with the length of the third steel plate, and the thickness difference between the third steel plate and the first steel belt is less than 0.5 mm.
Optionally, the first steel strip and the second steel strip are hot formed steels and the third steel plate is a dual phase steel.
Optionally, the first steel strip and the second steel strip are dual phase steels and the third steel plate is a low alloy high strength steel.
The invention has the beneficial effects that:
according to the steel strip threading welding method provided by the invention, the tail part of the first steel strip is welded with the head part of the second steel strip by using the third steel plate, the steel type of the third steel plate is different from the steel types of the first steel strip and the second steel strip, and the third steel plate is an easily-welded steel type, so that the easily-welded steel type can be selected to complete the welding between the head part of the former steel strip and the tail part of the latter steel strip, the mechanical property of a welding seam is improved, the occurrence of strip breakage accidents in the wearing process of the welding seam is reduced, and the production efficiency and the yield of a unit are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a steel strip threading welding method according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an arrangement of an apparatus used in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
The embodiment of the invention provides a steel strip threading welding method, which aims to solve the technical problems that the mechanical property of a welding seam between the head of a current steel strip and the tail of the previous steel strip is poor, the strip breakage accident of the welding seam occurs in the production process, and the production efficiency and the yield of a unit are directly influenced in the prior art.
Fig. 1 is a schematic flow chart of a steel strip threading welding method according to an embodiment of the present invention, and in conjunction with fig. 1, the welding method includes:
s1: providing a first steel belt and a second steel belt which are the same in steel type, and transporting the first steel belt and the second steel belt on a conveying roller bed in sequence according to the process flow;
s2: after the tail part of the first steel belt moves to a first set position, controlling the first steel belt to stop conveying;
s3: after the head of the second steel belt moves to a second set position, controlling the second steel belt to stop conveying, wherein the second set position is located on the rear side of the first set position in the process flow direction;
s4: providing a third steel plate, wherein the third steel plate is easy to weld, the steel type of the third steel plate is different from the steel types of the first steel belt and the second steel belt, and the third steel plate is controlled to be arranged between the tail part of the first steel belt and the head part of the second steel belt;
s5: welding two ends of a third steel plate with the tail of the first steel belt and the head of the second steel belt respectively;
s6: and controlling the tail part of the welded first steel strip and the second steel strip to be continuously transported on the conveying roller way.
According to the steel strip threading welding method provided by the embodiment of the invention, the tail part of the first steel strip and the head part of the second steel strip are welded by using the third steel plate, the steel type of the third steel plate is different from the steel types of the first steel strip and the second steel strip, and the third steel plate is an easily-welded steel type, so that the easily-welded steel type can be selected to complete the welding between the head part of the previous steel strip and the tail part of the next steel strip, the mechanical property of a welding line is improved, the strip breakage accident of the welding line in the wearing process is reduced, and the production efficiency and the yield of a unit are improved.
Based on the method, the embodiment of the invention improves the existing device. Fig. 2 is a schematic layout diagram of a device used in an embodiment of the present invention, and referring to fig. 2, the device includes an uncoiler 1, a second pinch roll 2, a second clamp 3, a first clamp 4, a first pinch roll 5, a plurality of rollgang tables 6 are arranged in the directions of the second pinch roll 2 and the first pinch roll 5, which are sequentially arranged in an installation process, a steel strip produced by the uncoiler 1 is sequentially driven by the second pinch roll 2 and the first pinch roll 5 to move on the rollgang tables 6 in the process flow direction, a first position sensor is arranged at a first set position, a second position sensor is arranged at a second set position, the first position sensor and the second position sensor are arranged between the first pinch roll 2 and the first pinch roll 5, and a feeding robot 7, a welding machine 8 and a shearing machine 12 are arranged outside the rollgang tables 6.
Based on the foregoing apparatus, with reference to fig. 2, S2 in the embodiment of the present invention specifically includes:
when the tail of the first steel strip 9 moves to a first set position, the first position sensor sends a first reaching signal to the controller, the controller sends a first stopping instruction to the first pinch roll 5, the first pinch roll 5 stops running, the first steel strip 9 stops conveying, the automatic operation characteristic is achieved, and at the moment, the tail of the first steel strip 9 protrudes out of the first pinch roll 5 by a certain size.
Similarly, with reference to fig. 2, S3 in the embodiment of the present invention specifically includes:
when the head of the second steel strip 10 moves to a second set position, the second position sensor sends a second reaching signal to the controller, the controller sends a second stopping instruction to the second pinch roll 2, the second pinch roll 2 stops moving, and the second steel strip 10 stops conveying.
With reference to fig. 2, S4 in the embodiment of the present invention specifically includes:
and a plurality of third steel plates 11 are stacked outside the conveying roller way 6, and when the second pinch roll 2 stops operating, the third steel plates 11 are sequentially arranged on the conveying roller way between the tail part of the first steel strip 9 and the head part of the second steel strip 10 according to the welding production rhythm by using the feeding robot 7.
In this step, the third steel plate 11 is arranged on the roller conveyor by the feeding robot 7, and the third steel plate can be programmed and automatically operated.
With reference to fig. 2, S5 in the embodiment of the present invention specifically includes:
when the third steel plate 11 is arranged between the tail part of the first steel belt 9 and the head part of the second steel belt 10, the first clamp 4 clamps one end of the third steel plate 11 facing the first steel belt 9, the second clamp 3 clamps one end of the third steel plate 11 facing the second steel belt 10, and the welding between the third steel plate 11 and the tail part of the first steel belt 9 and the welding between the third steel plate 11 and the head part of the second steel belt 10 are completed by the welding machine 8.
In the embodiment of the present invention, the welding of the third steel plate 11 and the tail of the first steel strip 9 and the head of the second steel strip 10 may be laser welding, and the parameters of the laser welding are as follows: welding laser power: 10000-12000W; welding speed: 3-5.5 m/min; preheating power: 13.5-18 kw; post heat power: 9-15 kw; filling materials: 50S-6 for gas shielded welding, with the diameter of 1.0 mm; filling speed: 3-6 m/min.
Further, after S5, the method further includes: and shearing the third steel plate 11 with the welding seams at the tail part of the first steel belt 9 and the head part of the second steel belt 10 by using a shearing machine 12, so as to reduce the problems of stress concentration, scraping and the like caused by the width difference of the steel plates, and thus the threading welding of two coils of steel belts difficult to weld can be completed.
In the embodiment of the invention, the width difference between the third steel plate and the first steel strip is preferably less than 200mm, the distance between the tail part of the first steel strip and the head part of the first steel strip is matched with the length of the third steel plate, and the thickness difference between the thickness of the third steel plate and the thickness of the first steel strip is preferably less than 0.5mm, so that the welding reliability is improved.
Further, in the embodiment of the invention, the tensile strength of the third steel sheet is not less than 50% of the tensile strength of the first steel sheet and the second steel sheet.
For cold rolled products, cold rolled products can be classified into 5 grades (welding properties are gradually decreased in order) according to welding properties: low and ultra-low carbon steels, high strength IF and bake-hardened steels, low alloy high strength steels, dual phase steels and TRIP steels, hot formed steels. Therefore, when selecting the matched easy-to-weld steel plates, considering that the fluctuation of the rolling process is reduced as much as possible, the mechanical property difference is too large and is not too large, and steel types with higher welding performance and first grade are sequentially selected, for example, when the first steel strip and the second steel strip are hot forming steel, the third steel plate is selected to be dual-phase steel, the first steel strip and the second steel strip are dual-phase steel, and the third steel plate is selected to be low-alloy high-strength steel.
Adopt the difficult welding steel type (first steel band and second steel band) and the welding that easily welds the board kind (third steel plate), the element that is harmful to welding performance among the difficult welding steel type is diluted 50% at most, is higher than the dilution rate who adopts filler material far away, and because difficult welding steel type only accounts for the welding seam district half, the welding seam heat affected zone that the performance is relatively poor also only is half when original difficult welding steel type butt welding, the welding seam mechanical properties has been improved, thereby reducible welding seam takes place the strip breakage accident in the wearing process, with the production efficiency and the output that improve the unit.
The specific application is as follows:
to produce 50 coils of 1500MPa hot formed steel of size 4.5mm 1200mm, a suitable easy weldable steel grade of 4.0mm 1300mm dual phase steel DP600 was selected, and 49 pieces of steel were blanked out of size 1500mm and placed on a stack. During production, a feeding robot grabs and places the steel on a conveying roller way according to the production rhythm, and the steel is respectively welded with the head and the tail of the steel which is difficult to weld. Welding laser power: 11000W; welding speed: 5 m/min; preheating power: 16 kw; post heat power: 13 kw; filling materials: 50S-6 for gas shielded welding, with the diameter of 1.0 mm; filling speed: 5 m/min.
The specific application is as follows:
to produce WKD930 bundle 60 rolls of steel strip 3.5mm by 1400mm, which is 930MPa strong, a suitable easy-to-weld steel grade of 420LA low-alloy high-strength steel with a size of 4.0mm by 1450mm was selected, and 59 pieces of steel with a length of 1500mm were blanked and placed on a stack. During production, the upper robot grabs and places the steel on a roller way according to the production rhythm, and the steel is respectively welded with the head and the tail of the steel which are difficult to weld. Welding laser power: 10000W; welding speed: 4 m/min; preheating power: 15 kw; post heat power: 12 kw; filling materials: 50S-6 for gas shielded welding, with the diameter of 1.0 mm; filling speed: 4.5 m/min.
The concrete application is three:
to produce a roll of 4.5mm x 1500mm d W250P1 high phosphorous steel 55, this steel grade contains a high P content and is not easily weldable. Because of the bake-hardened steel series, the matching easy-welding steel grade was selected as DC04 mild steel, size 5.0mm 1450mm, and placed on the stack after blanking 54 pieces with length size 1500 mm. During production, a feeding robot grabs and places the steel on a roller way according to the production rhythm, and the steel is respectively welded with the head and the tail of the steel which are difficult to weld. Welding laser power: 11500W; welding speed: 5.5 m/min; preheating power: 18 kw; post heat power: 15 kw; filling material: 50S-6 for gas shielded welding, with the diameter of 1.0 mm; filling speed: 5.5 m/min.
The first table is a welding performance comparison table of the threading welding mode of the embodiment of the invention and the threading welding mode of directly welding two steel belts in the prior art, and the first table shows that the threading welding mode of the embodiment of the invention has high qualification rate and good reliability and practicability.
The following embodiments are provided for the purpose of illustrating the present invention and are not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the technical features of the present invention can be modified or changed in some ways without departing from the scope of the present invention.
Claims (8)
1. A steel strip threading welding method is characterized by comprising the following steps:
providing a first steel belt and a second steel belt which are the same in steel type, wherein the first steel belt and the second steel belt are sequentially transported on a conveying roller way according to the process flow;
after the tail part of the first steel belt moves to a first set position, controlling the first steel belt to stop conveying;
after the head of the second steel belt runs to a second set position, controlling the second steel belt to stop conveying, wherein the second set position is located on the rear side of the first set position in the process flow direction;
providing a third steel plate, wherein the third steel plate is easy to weld, the steel type of the third steel plate is different from the steel types of the first steel belt and the second steel belt, and the third steel plate is controlled to be arranged between the tail part of the first steel belt and the head part of the second steel belt;
welding two ends of the third steel plate with the tail part of the first steel belt and the head part of the second steel belt respectively;
controlling the tail part of the welded first steel strip and the second steel strip to be continuously transported on a conveying roller way;
wherein the tensile strength of the third steel plate is not less than 50% of the tensile strength of the first steel strip and the tensile strength of the second steel strip; the width difference between the third steel plate and the first steel strip is smaller than 200mm, the distance between the tail of the first steel strip and the head of the first steel strip is matched with the length of the third steel plate, and the thickness difference between the thickness of the third steel plate and the thickness of the first steel strip is smaller than 0.5 mm.
2. The steel strip threading welding method according to claim 1, wherein the controlling of the first steel strip to stop conveying after the tail of the first steel strip moves to a first set position specifically comprises:
the first set position is provided with a first position sensor, when the tail of the first steel strip runs to the first set position, the first position sensor sends a first reaching signal to the controller, the controller sends a first stopping instruction to the first pinch roll, and the first pinch roll stops running to enable the first steel strip to stop conveying.
3. The steel strip threading welding method according to claim 1, wherein the step of controlling the second steel strip to stop conveying after the head of the second steel strip moves to the second set position specifically comprises the steps of:
and a second position sensor is arranged at the second set position, when the head of the second steel strip runs to the second set position, the second position sensor sends a second reaching signal to the controller, the controller sends a second stopping instruction to the second pinch roll, and the second pinch roll stops running to stop conveying the second steel strip.
4. The steel strip threading welding method according to claim 1, wherein the controlling of the third steel plate to be disposed between the tail portion of the first steel strip and the head portion of the second steel strip specifically comprises:
and a plurality of third steel plates are stacked outside the conveying roller way, and the third steel plates are sequentially arranged on the conveying roller way between the tail part of the first steel belt and the head part of the second steel belt according to the welding production rhythm by using a feeding robot.
5. The steel strip threading welding method according to claim 1, wherein the welding of the two ends of the third steel plate to the tail portion of the first steel strip and the head portion of the second steel strip respectively comprises:
a first clamp and a second clamp are respectively arranged between the first setting position and the second setting position, and the second clamp and the first clamp are sequentially arranged along the process flow direction;
when the third steel plate is arranged between the tail of the first steel belt and the head of the second steel belt, the first clamp clamps one end, facing the first steel belt, of the third steel plate, the second clamp clamps one end, facing the second steel belt, of the third steel plate, and welding between the third steel plate and the tail of the first steel belt and between the third steel plate and the head of the second steel belt is completed through a welding machine.
6. The steel strip threading welding method according to claim 1, further comprising, after welding both ends of the third steel plate to the tail portion of the first steel strip and the head portion of the second steel strip, respectively:
and a shearing machine is arranged outside the conveying roller way, and the shearing machine is used for shearing the third steel plate with the welding seam at the tail part of the first steel belt and the welding seam at the head part of the second steel belt respectively.
7. The steel strip threading welding method according to any one of claims 1 to 6, characterized in that the first steel strip and the second steel strip are hot formed steels and the third steel plate is a dual phase steel.
8. The method of strip threading welding of any one of claims 1 to 6 wherein the first and second steel strips are dual phase steels and the third steel plate is a low alloy high strength steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010601599.XA CN111975201B (en) | 2020-06-28 | 2020-06-28 | Steel strip threading welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010601599.XA CN111975201B (en) | 2020-06-28 | 2020-06-28 | Steel strip threading welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111975201A CN111975201A (en) | 2020-11-24 |
| CN111975201B true CN111975201B (en) | 2022-08-16 |
Family
ID=73441686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010601599.XA Active CN111975201B (en) | 2020-06-28 | 2020-06-28 | Steel strip threading welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111975201B (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201136089Y (en) * | 2008-01-09 | 2008-10-22 | 曹全有 | Dowelling device at ends of band steel for butt welding machine |
| CN101633071B (en) * | 2009-05-26 | 2011-06-29 | 山西太钢不锈钢股份有限公司 | Butting welding method of stainless steel plate |
| CN102699465B (en) * | 2012-06-20 | 2014-05-21 | 河南晶泰航空航天高新材料科技有限公司 | Laser induced nanometer brazing method of silicon carbide particle reinforced aluminum matrix composite with high volume fraction |
| CN203304895U (en) * | 2013-06-26 | 2013-11-27 | 武汉钢铁(集团)公司 | Double-station automatic welding machine |
| EA028399B1 (en) * | 2015-02-20 | 2017-11-30 | Белорусский Национальный Технический Университет | Method for laser welding of parts made of dissimilar metals |
| CN104801856B (en) * | 2015-05-07 | 2017-01-04 | 马钢(集团)控股有限公司 | Continuous tailor-welding device and tailor-welding method for thin steel plates |
| CN105057867A (en) * | 2015-08-21 | 2015-11-18 | 南昌航空大学 | Cross resistance welding process for heterogeneous wires |
| CN206925555U (en) * | 2017-03-28 | 2018-01-26 | 海盐哈特惠机械五金制品有限公司 | A kind of steel band shears welder |
| CN207048691U (en) * | 2017-07-11 | 2018-02-27 | 西安向阳航天材料股份有限公司 | A kind of compound oil well pipe of metallurgy type |
| CN107127454B (en) * | 2017-07-11 | 2018-10-02 | 吉林大学 | Using titanium alloy-stainless steel dissimilar metal laser welding method of composite interlayer |
| CN107442915B (en) * | 2017-09-21 | 2020-08-04 | 武汉钢铁有限公司 | Narrow lap welding method for 440 MPa-grade cold-rolled phosphorus-containing high-strength IF steel |
| CN207431545U (en) * | 2017-10-30 | 2018-06-01 | 武汉钢铁有限公司 | The preset material apparatus of laser welding |
| CN108705198A (en) * | 2018-06-28 | 2018-10-26 | 南京中高知识产权股份有限公司 | A kind of welding method of stainless steel materials |
| CN109202245B (en) * | 2018-09-17 | 2021-06-22 | 武汉钢铁有限公司 | Resistance spot welding method suitable for three-layer plate with aluminum-silicon coating as intermediate layer for hot forming steel |
-
2020
- 2020-06-28 CN CN202010601599.XA patent/CN111975201B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111975201A (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3835681A (en) | Continuous rolling mill | |
| US4377732A (en) | Method of and apparatus for the production of profile members and hollow bodies from a plurality of metal strips of constant thickness | |
| US10207303B2 (en) | Cold rolling apparatus | |
| CN108500566B (en) | Multipurpose welded pipe production equipment and multipurpose welded pipe production process | |
| CN111185482A (en) | Stretch bending straightening mechanical system with over-weld self-adaptive function | |
| CN111975201B (en) | Steel strip threading welding method | |
| CN106807752B (en) | A kind of preparation of composite metal plate and rolling integrated-type production system and preparation method | |
| US20160045974A1 (en) | Open-pipe weld shielding system for electric resistance welded steel pipe or tube | |
| US3860781A (en) | Method of and apparatus for continuously producing welded light construction beam sections, in particular I- or T-beams | |
| US3837559A (en) | Strip joining apparatus for rolling mills and the like | |
| KR100212296B1 (en) | Method and device for joining billets | |
| KR101938442B1 (en) | Entry section of a pickling line, of a continuous continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation | |
| CN112846514A (en) | Method for judging welding quality through parameter setting of welding seam quality detection system | |
| CN114888525A (en) | Production process of C or U-shaped steel photovoltaic support | |
| CN206415418U (en) | A kind of middle base attachment means and system | |
| CN110666320A (en) | 300-series stainless steel Taylor double-welding-wheel resistance seam welding process | |
| WO2022172516A1 (en) | Laser cutting method for steel strip, laser cutting equipment, cold rolling method, and manufacturing method of cold-rolled steel strip | |
| CN112872106B (en) | Method for straightening low-carbon steel by using withdrawal and straightening machine | |
| CN1277629C (en) | Band steel lath hot continuous rolling process | |
| JP3115353B2 (en) | Hot plate joining method, joining equipment and rolling method | |
| JPH0716683B2 (en) | Continuous warm rolling equipment for stainless steel strip | |
| JP2010274285A (en) | Apparatus for manufacturing large-sized coil for electroseamed steel pipe | |
| CN119282620A (en) | A method for producing silicon steel based on a preparation unit | |
| CN118595605A (en) | A laser welding method for hot-rolled substrate of 1200MPa grade cold-rolled high-strength steel | |
| CN207139123U (en) | A kind of laser welding system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |