CN110926961A - Strip steel weld joint quality detection device and method - Google Patents
Strip steel weld joint quality detection device and method Download PDFInfo
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- CN110926961A CN110926961A CN201911219367.1A CN201911219367A CN110926961A CN 110926961 A CN110926961 A CN 110926961A CN 201911219367 A CN201911219367 A CN 201911219367A CN 110926961 A CN110926961 A CN 110926961A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
The invention discloses a strip steel weld joint quality detection device and a method, wherein the strip steel weld joint quality detection device comprises a cup-convex machine, a bending assembly and a base; the cup-convex machine and the bending assembly are both arranged on the base, and the cup-convex machine is used for carrying out cup-convex detection on the welding seam of the strip steel; the bending assembly is used for bending the same strip steel welding line, namely the crescent edge of the strip steel welding line after edge digging. When the welding seam detection is needed, the welding seam of the strip steel is obtained, then the welding seam of the strip steel is placed on a cup-convex machine for cup-convex detection, and then the crescent edge of the welding seam of the strip steel is placed at the bending component for bending. When the cup bulge and the bend pass, the quality of the welding line is qualified. The invention can realize the rapid detection of the quality of the welding seam of the strip steel and the accurate judgment of the quality of the welding seam of the strip steel, and can ensure that various strip steels welded in front and at back can smoothly pass through a stretching straightener, a steering roller and the like to be bent and steered for many times until the strip steels are smoothly rolled and taken off the line.
Description
Technical Field
The invention relates to the technical field of welding detection of cold rolling welding machines in the metallurgical industry, in particular to a device and a method for detecting the quality of a strip steel weld joint.
Background
The strip steel is welded by a welding machine, so that the continuous operation of the unit is ensured. At present, the weld joint detection uses a cup-convex machine to carry out a ball-convex method to check the weld joint quality. However, the weld quality of the weld detected by the cup bulge is not stable enough after the weld is turned by the steering roller of the unit and is subjected to scale breaking and extension treatment by straightening and withdrawal, and the weld is easy to break at the straightening and withdrawal position, so that the unit is stopped, and the production efficiency is influenced.
Therefore, how to effectively judge the stability of the weld joint is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a strip steel weld quality detection apparatus, which can effectively determine weld stability.
The second purpose of the invention is to provide a method for detecting the quality of the strip steel weld joint.
In order to achieve the first object, the present invention provides the following solutions:
the quality detection device for the strip steel weld joint comprises a cup-convex machine, a bending assembly and a base;
the cup-convex machine and the bending assembly are both arranged on the base, the cup-convex machine is used for carrying out cup-convex detection on a strip steel welding line, and the strip steel welding line is a welding line sample plate with crescent edges dug on two sides;
the bending assembly is used for detecting the cup bulge and bending the strip steel welding seam crescent edge through edge digging.
In a specific embodiment, the bending assembly comprises a movable cutter head, a fixed cutter head and a first driver;
the fixed cutter head is fixedly arranged on the base, the movable cutter head is arranged at the driving end of the first driver, and the first driver is arranged on the base;
a bending groove is formed in the fixed cutter head, and a bending bulge matched with the bending groove is formed in the movable cutter head;
the bending bulge is arranged in the bending groove and can tightly push the crescent edge of the welding seam of the strip steel under the action of the first driver.
In another specific embodiment, the bending groove is a V-shaped groove, and the bending protrusion is a V-shaped protrusion.
In another specific embodiment, the angle of the V-groove is 75 degrees.
In another specific embodiment, the first actuator is a first hydraulic cylinder.
In another specific embodiment, the cup-punch machine comprises a die, a punch, and a second driver;
the punch is fixed at the driving end of the second driver, and the second driver is fixed on the base;
the punch is driven by the second driver to tightly push the crescent edge of the strip steel weld joint and coincide with the punch.
In another specific embodiment, the die is a hemispherical die and the punch is a hemispherical punch.
In another specific embodiment, the second actuator is a second hydraulic cylinder.
In another specific embodiment, the device for detecting the quality of the strip steel weld seam further comprises a speed regulating valve;
the speed regulating valve is respectively connected with the first hydraulic cylinder and the second hydraulic cylinder.
The various embodiments according to the invention can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the invention and are part of the specific embodiments of the invention.
Without being limited to any theory, the disclosure shows that, when the strip steel weld joint quality detection device disclosed by the invention is used, the strip steel weld joint is placed on a cup-convex machine for cup-convex detection, and then the crescent edge of the strip steel weld joint is placed at the bending component for bending detection. When the cup bulge and the bend pass, the quality of the welding line is qualified. The invention can realize the rapid detection of the quality of the welding seam of the strip steel and the accurate judgment of the quality of the welding seam of the strip steel.
Specifically, after the edges of the welding line of the strip steel are dug at two sides and the cup is qualified, the welding line can be ensured to smoothly pass through all steering rollers and the tension leveler until the rolling mill is discharged, the strip breakage of the rolling mill or midway is avoided, the production efficiency is greatly improved, and great economic benefits are brought to an acid rolling unit of a plate mill. The method has great popularization significance for continuous production of an acid rolling unit, a continuous annealing unit and the like.
In order to achieve the second object, the present invention provides the following solutions:
a strip steel weld joint quality detection method comprises the following steps:
placing a strip steel welding line on a cup-convex machine to carry out cup-convex detection, wherein the strip steel welding line is a welding line sample plate with crescent edges dug on two sides;
and placing the crescent edge of the strip steel welding seam subjected to cup bulge detection on a bending assembly for bending detection.
Without being limited to any theory, the disclosure shows that when the weld joint detection is needed, the weld joint of the strip steel is firstly sheared by a welding machine through a double-cutting shear to cut a weld joint sample plate, and simultaneously, an edge cutting machine is used for cutting the edge of the weld joint of the strip steel to form a crescent edge; then, the strip steel welding seam is placed on a cup-convex machine for cup-convex detection, and the crescent edge of the strip steel welding seam is placed at the bending component for bending detection. When the cup bulge and the bend pass, the quality of the welding line is qualified. The invention can realize the rapid detection of the quality of the welding seam of the strip steel and the accurate judgment of the quality of the welding seam of the strip steel, and can ensure that various strip steels welded in front and at back can smoothly pass through a stretching straightener, a steering roller and the like to be bent and steered for many times until the strip steels are smoothly rolled and taken off the line.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a front view of a device for detecting the quality of a weld joint of strip steel provided by the invention;
FIG. 2 is a schematic view of a top view structure of the device for detecting the quality of the weld joint of the strip steel provided by the invention.
Wherein, in fig. 1-2:
the tool comprises a base 1, a movable tool bit 2, a fixed tool bit 3, a first driver 4, a die 5, a punch 6 and a second driver 7.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying fig. 1-2 and the detailed description.
Example one
The invention discloses a strip steel weld joint quality detection device which comprises a cup-bulging machine, a bending assembly and a base 1.
The cup convex machine and the bending assembly are both arranged on the base 1 and are designed integrally. The cup-convex machine is used for carrying out cup-convex detection on the welding seam of the strip steel. Specifically, the strip steel welding line is a welding line sample plate with edges dug at two sides, and the dug edges are crescent edges. And welding the two rolls of strip steel by a welding machine to form a strip steel welding seam, digging the two sides of the strip steel welding seam into crescent edges by an edge digging machine, and shearing by a double-cutting shear of the welding machine.
The bending assembly is used for bending the crescent edge of the strip steel welding seam subjected to the cup convex detection.
When the quality detection device for the strip steel welding seam needs to perform welding seam detection, the strip steel welding seam is placed on a cup-convex machine to perform cup-convex detection, and then the crescent edge of the strip steel welding seam is placed at a bending component to perform bending detection. When the cup bulge and the bend pass, the quality of the welding line is qualified. The invention can realize the rapid detection of the quality of the welding seam of the strip steel and the accurate judgment of the quality of the welding seam of the strip steel, and can ensure that various strip steels welded in front and at back can smoothly pass through a stretching straightener, a steering roller and the like to be bent and steered for many times until the strip steels are smoothly rolled and taken off the line. The invention can realize the rapid detection of the quality of the welding seam of the strip steel and the accurate judgment of the quality of the welding seam of the strip steel.
Specifically, both sides of a strip steel welding seam are dug, bending detection is performed, and after cup bulge detection is qualified, the welding seam can be guaranteed to smoothly pass through all steering rolls and a tension leveler until a rolling mill is taken off line, so that midway or strip breakage of the rolling mill is avoided, the production efficiency is greatly improved, and great economic benefits are brought to an acid rolling unit of a plate mill. The method has great popularization significance for continuous production of an acid rolling unit, a continuous annealing unit and the like.
Example two
In the second embodiment provided by the present invention, the structure of the strip steel weld quality detection apparatus in the present embodiment is similar to that of the strip steel weld quality detection apparatus in the first embodiment, and the same parts are not repeated and only differences are introduced.
In the embodiment, the invention specifically discloses that the bending assembly comprises a movable cutter head 2, a fixed cutter head 3 and a first driver 4.
The fixed cutter head 3 is fixedly arranged on the base 1, the movable cutter head 2 is arranged at the driving end of the first driver 4, and the first driver 4 is arranged on the base 1.
The fixed cutter head 3 is provided with a bending groove, and the movable cutter head 2 is provided with a bending bulge matched with the bending groove.
The bending bulge can tightly push the crescent edge of the welding seam of the strip steel into the bending groove under the action of the first driver 4.
Specifically, the first actuator 4 is a power member such as a first hydraulic cylinder or an air cylinder.
Furthermore, the invention discloses that the bending groove is a V-shaped groove, and the bending bulge is a V-shaped bulge.
Specifically, the invention discloses that the angle of the V-shaped groove is 75 degrees.
Further, the present invention discloses a cup-bulging machine comprising a die 5, a punch 6 and a second driver 7.
The die 5 is fixed on the base 1, the punch 6 is fixed at the driving end of a second driver 7, and the second driver 7 is fixed on the base 1;
the punch 6 can tightly push the crescent edge of the strip steel welding seam under the driving of the second driver 7 and is overlapped with the punch 6.
Specifically, the invention discloses that the die 5 is a semi-spherical die 5, and the punch 6 is a semi-spherical punch 6.
Further, the present invention discloses that the second actuator 7 is a second hydraulic cylinder.
Further, the invention discloses a device for detecting the quality of the strip steel weld joint, which further comprises a speed regulating valve, wherein the speed regulating valve is respectively connected with the first hydraulic cylinder and the second hydraulic cylinder. The speed regulating valve is used for controlling the speed of the bending bulge and the punch 6.
EXAMPLE III
The invention provides a strip steel weld joint quality detection method, which comprises the following steps:
step S1: and (3) placing the strip steel welding line on a cup-convex machine to carry out cup-convex detection, wherein the strip steel welding line is a welding line sample plate with crescent edges dug at two sides.
Step S2: and (4) placing the crescent edge of the strip steel welding seam subjected to cup bulge detection on the bending component for bending detection.
When the quality detection method of the strip steel weld joint needs to detect the weld joint, firstly, the weld joint of the strip steel is sheared by a welding machine through a double-cutting shear, and simultaneously, an edge digging machine is used for digging the edge of the strip steel weld joint to form a crescent edge; then, the strip steel welding seam is placed on a cup-convex machine for cup-convex detection, and the crescent edge of the strip steel welding seam is placed at the bending component for bending detection. When the cup bulge and the bend pass, the quality of the welding line is qualified. The invention can realize the rapid detection of the quality of the welding seam of the strip steel and the accurate judgment of the quality of the welding seam of the strip steel, and can ensure that various strip steels welded in front and at back can smoothly pass through a stretching straightener, a steering roller and the like to be bent and steered for many times until the strip steels are smoothly rolled and taken off the line.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and inventive features disclosed herein.
Claims (10)
1. The quality detection device for the strip steel weld joint comprises a cup-convex machine and is characterized by also comprising a bending assembly and a base (1);
the cup-convex machine and the bending assembly are both arranged on the base (1), the cup-convex machine is used for carrying out cup-convex detection on a strip steel welding line, and the strip steel welding line is a welding line sample plate with crescent edges dug on two sides;
the bending assembly is used for bending and detecting the crescent edges of the strip steel welding seams, which are subjected to cup convex detection.
2. The strip steel weld joint quality detection device according to claim 1, wherein the bending assembly comprises a movable cutter head (2), a fixed cutter head (3) and a first driver (4);
the fixed cutter head (3) is fixedly arranged on the base (1), the movable cutter head (2) is arranged at the driving end of the first driver (4), and the first driver (4) is arranged on the base (1);
a bending groove is formed in the fixed cutter head (3), and a bending bulge matched with the bending groove is formed in the movable cutter head (2);
the bending bulge can tightly push the crescent edge of the welding seam of the strip steel into the bending groove under the action of the first driver (4).
3. The device for detecting the quality of the weld joint of the strip steel as claimed in claim 2, wherein the bending groove is a V-shaped groove, and the bending protrusion is a V-shaped protrusion.
4. The device for detecting the quality of the weld joint of the strip steel as claimed in claim 3, wherein the angle of the V-shaped groove is 75 degrees.
5. The strip weld quality detecting apparatus according to any one of claims 2 to 4, wherein the first actuator (4) is a first hydraulic cylinder.
6. The strip steel weld quality detecting device according to claim 5, characterized in that the cup-bulging machine comprises a die (5), a punch (6) and a second driver (7);
the punch die (5) is fixed on the base (1), the punch head (6) is fixed at the driving end of the second driver (7), and the second driver (7) is fixed on the base (1);
the punch head (6) is driven by the second driver (7) to tightly push the crescent edge of the strip steel weld joint and coincide with the punch head (6).
7. The device for detecting the quality of the strip steel weld joint according to claim 6, wherein the die (5) is a semi-sphere die, and the punch (6) is a semi-sphere punch.
8. The strip steel weld quality detection device according to claim 6, wherein the second actuator (7) is a second hydraulic cylinder.
9. The strip steel weld quality detection device according to claim 8, further comprising a speed regulating valve;
the speed regulating valve is respectively connected with the first hydraulic cylinder and the second hydraulic cylinder.
10. The method for detecting the quality of the strip steel weld joint is characterized by comprising the following steps:
placing a strip steel welding line on a cup-convex machine to carry out cup-convex detection, wherein the strip steel welding line is a welding line sample plate with crescent edges dug on two sides;
and placing the crescent edge of the strip steel welding seam subjected to cup bulge detection on a bending assembly for bending detection.
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| CN201911219367.1A CN110926961A (en) | 2019-12-03 | 2019-12-03 | Strip steel weld joint quality detection device and method |
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| CN201911219367.1A CN110926961A (en) | 2019-12-03 | 2019-12-03 | Strip steel weld joint quality detection device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222184A (en) * | 2020-10-09 | 2021-01-15 | 河钢乐亭钢铁有限公司 | Cold-rolled strip steel weld joint quality on-line detection device |
| CN113695719A (en) * | 2021-08-26 | 2021-11-26 | 攀钢集团西昌钢钒有限公司 | Weld quality inspection method and system |
| CN113751530A (en) * | 2021-09-28 | 2021-12-07 | 攀钢集团攀枝花钢钒有限公司 | Method for inspecting adhesive force of plating layer of hot-dip plated strip steel for stamping |
| CN114406685A (en) * | 2022-02-15 | 2022-04-29 | 宝钢湛江钢铁有限公司 | Automatic strip steel welding method |
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| CN113695719A (en) * | 2021-08-26 | 2021-11-26 | 攀钢集团西昌钢钒有限公司 | Weld quality inspection method and system |
| CN113751530A (en) * | 2021-09-28 | 2021-12-07 | 攀钢集团攀枝花钢钒有限公司 | Method for inspecting adhesive force of plating layer of hot-dip plated strip steel for stamping |
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Application publication date: 20200327 |