CN112620350A - Weld joint cutting method for oriented silicon steel coil - Google Patents
Weld joint cutting method for oriented silicon steel coil Download PDFInfo
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- CN112620350A CN112620350A CN202011484349.9A CN202011484349A CN112620350A CN 112620350 A CN112620350 A CN 112620350A CN 202011484349 A CN202011484349 A CN 202011484349A CN 112620350 A CN112620350 A CN 112620350A
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- 238000000034 method Methods 0.000 title claims abstract description 82
- 238000005520 cutting process Methods 0.000 title claims abstract description 47
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 117
- 238000004080 punching Methods 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000000137 annealing Methods 0.000 claims abstract description 17
- 230000000052 comparative effect Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/12—Equipment for indicating where to cut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0092—Welding in the rolling direction
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- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The invention discloses a method for cutting off a welding seam of an oriented silicon steel coil, which comprises the steps of punching a hole at a position away from the welding seam by a preset distance after the steel coil is welded by a welding unit; then, when the steel coil reaches the finished product annealing process, detecting the weld seam punching by using a hole detection device, obtaining the weld seam position according to the weld seam punching, and recording the weld seam position; and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position. Therefore, the method utilizes the welding seam to punch holes, combines the hole detection device, and transmits the welding seam position information to the slitting process, so that the welding seam identification and removal rate is higher, the problem that the oriented silicon steel welding seam cannot be accurately positioned and removed is effectively solved, and the multi-process combination and accurate removal of the welding seam in the coil is realized.
Description
Technical Field
The invention belongs to the technical field of oriented silicon steel, and particularly relates to a method for cutting a weld joint of an oriented silicon steel coil.
Background
The conventional production flow of the oriented silicon steel comprises the following steps in sequence: steel making, hot rolling, normalizing, cold rolling, decarburization annealing, high-temperature annealing, finished product annealing, slitting and packaging. Wherein the problem of strip breakage is easily caused by the influence of factors such as components, edge quality and the like in the cold rolling process. The conventional treatment method is that after the strip is broken, the strip is rolled in sections, and then the strip is spliced into a large coil by a splicing welder to carry out the working procedures of subsequent decarburization annealing, high-temperature annealing and the like. Considering the production continuity effect, the splice welds in such rolls are generally not cut in the intermediate process, and are left to be cut in the slitting and packaging process. Punching processing is not usually carried out in the tailor-welding process so as to avoid influencing the welding seam tracking procedure of the post-procedure. However, the welding seam has extremely low recognition rate in the slitting and packaging process, and is very easy to be rolled into a finished product to influence the use of downstream users, so that the welding seam in the oriented silicon steel coil cannot be accurately cut at present.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for cutting the welding seam of the oriented silicon steel coil so as to at least partially solve the technical problem that the oriented silicon steel welding seam in the prior art can not be accurately positioned and cut.
The invention realizes the purpose through the following technical scheme:
a weld excision method for oriented silicon steel coils, the method comprising:
punching a hole at a position away from a welding line by a preset distance after the welding unit finishes welding the steel coil;
when the steel coil reaches the finished product annealing process, detecting the weld seam punching by using a hole detection device, obtaining the weld seam position according to the weld seam punching, and recording the weld seam position;
and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
Further, the location of the punch is either in front of the weld or behind the weld.
Further, the preset distance between the punching position and the welding line is 10-200 mm.
Further, the aperture size of the punch is not equal to the conventional inter-roll weld punch size.
Further, the diameter d <15mm of the punched hole, or the diameter d >30 mm.
Further, the hole detection device is a light curtain or a high-speed camera, the diameter of a hole prestored in the equipment is compared with the detected punching diameter, if the diameter of the hole is consistent with the detected punching diameter, the current position is considered to be a welding line, and the position of the welding line is recorded.
In one or more specific embodiments, the method for cutting off the weld seam of the oriented silicon steel coil provided by the invention comprises the following technical effects:
according to the method for cutting the welding line of the oriented silicon steel coil, the steel coil is welded by the welding unit, and then the steel coil is punched at the position away from the welding line by the preset distance; then, when the steel coil reaches the finished product annealing process, detecting the weld seam punching by using a hole detection device, obtaining the weld seam position according to the weld seam punching, and recording the weld seam position; and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position. Therefore, the method utilizes the welding seam to punch holes, combines the hole detection device, and transmits the welding seam position information to the slitting process, so that the welding seam identification and removal rate is higher, the problem that the oriented silicon steel welding seam cannot be accurately positioned and removed is effectively solved, and the multi-process combination and accurate removal of the welding seam in the coil is realized.
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 flow chart of one embodiment of a weld removal method provided by the present invention;
fig. 2 is a schematic view of a steel coil using the method shown in fig. 1.
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 method for cutting the welding seam of the oriented silicon steel coil provided by the invention utilizes the welding seam punching and combines the hole detection device to transmit the welding seam position information to the cutting process, so that the welding seam identification cutting rate is higher, the problem that the oriented silicon steel welding seam cannot be accurately positioned and cut is effectively solved, and the multi-process combined accurate cutting of the welding seam in the coil is realized.
In one embodiment, as shown in fig. 1 and 2, the method for cutting off the weld seam of the oriented silicon steel coil provided by the invention comprises the following steps:
s1: punching a hole at a position away from a welding line by a preset distance after the welding unit finishes welding the steel coil; that is, the first and second coil sections 1 and 2 adjacent to each other in fig. 2 are welded, and the punched hole 4 is punched at a predetermined position from the welded joint 3.
S2: when the steel coil reaches the finished product annealing process, detecting the weld seam punching by using a hole detection device, obtaining the weld seam position according to the weld seam punching, and recording the weld seam position;
s3: and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
Specifically, in step S1, the punching position is in front of the welding seam or at the back of the welding seam, and the preset distance between the punching position and the welding seam is 10-200 mm.
In order to avoid confusion with the punching size of the conventional inter-roll welding seam and improve the identification accuracy, the aperture size of the punched hole is not equal to the punching size of the conventional inter-roll welding seam. In particular, the diameter d <15mm, or the diameter d >30mm, of the punched hole.
The hole detection device is a light curtain or a high-speed camera, the hole diameter and the detected punching diameter are prestored in comparison equipment, if the hole diameter and the detected punching diameter are consistent, the current position is considered to be a welding line, and the position of the welding line is recorded. The obtained welding seam position record can be the distance from the head or the tail of the strip steel, so that accurate cutting can be carried out in the coil dividing process according to the distance from the welding seam to the head or the tail of the strip steel.
In order to better explain the technical effects of the present invention, the main contents of the present invention are further illustrated below with reference to specific examples, but the contents of the present invention are not limited to the following examples.
Example 1
A light curtain is used as a hole detection device, the position w of a punched hole of a welding seam is set to be 100mm, the diameter of the punched hole is set to be 14mm, and the position of the welding seam is identified and cut off in a coil dividing process.
The method comprises the following specific steps:
s11: after the welding unit finishes the welding of the steel coil, punching a hole at a position 100mm away from a welding seam, wherein the diameter of the punched hole is 14 mm;
s12: when the steel coil reaches the finished product annealing process, detecting the weld punching hole by using an optical curtain, obtaining the position of the weld according to the optical curtain, and recording the position of the weld;
s13: and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
After the cutting, the weld cutting rate is verified to be 100% as shown in table 1.
Example 2
A light curtain is used as a hole detection device, the position w of a punched hole of a welding seam is set to be 150mm, the diameter of the punched hole is set to be 14mm, and the position of the welding seam is identified and cut off in a coil dividing process.
The method comprises the following specific steps:
s21: after the welding unit finishes the welding of the steel coil, punching a hole at a position 150mm away from the welding line, wherein the diameter of the punched hole is 14 mm;
s22: when the steel coil reaches the finished product annealing process, detecting the weld punching hole by using an optical curtain, obtaining the position of the weld according to the optical curtain, and recording the position of the weld;
s23: and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
After the cutting, the weld cutting rate is verified to be 100% as shown in table 1.
Example 3
A light curtain is used as a hole detection device, the position w of a punched hole of a welding seam is set to be 180mm, the diameter of the punched hole is set to be 34mm, and the position of the welding seam is identified and cut off in a coil dividing process.
The method comprises the following specific steps:
s31: after the welding unit finishes the welding of the steel coil, punching a hole at a position 180mm away from a welding seam, wherein the diameter of the punched hole is 34 mm;
s32: when the steel coil reaches the finished product annealing process, detecting the weld punching hole by using an optical curtain, obtaining the position of the weld according to the optical curtain, and recording the position of the weld;
s33: and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
After the cutting, the weld cutting rate is verified to be 100% as shown in table 1.
Comparative examples 1 to 3 were those in which the method of the present invention was not used, and the weld was directly cut off in the coil dividing step according to experience, and after the cut-off, the weld cutting-off rates of comparative examples 1 to 3 were 48%, 37%, and 41% in this order, as shown in table 1.
The weld removal ratios of examples 1-3 and comparative examples 1-3 were compared as shown in table 1:
TABLE 1 weld bead removal ratio of examples 1-3 and comparative examples 1-3
According to the embodiment, when the light curtain is used as the hole detection device and the method provided by the invention is adopted, the welding line identification and cutting rate reaches 100%, the problem that the oriented silicon steel welding line cannot be accurately positioned and cut is effectively solved, and the multi-process combined accurate cutting of the welding line in the coil is realized.
Example 4
A high-speed camera is used as a hole detection device, a welding seam punching position w is set to be 110mm, the punching diameter is set to be 10mm, and welding seam position identification and cutting are carried out in a coil dividing process.
The method comprises the following specific steps:
s41: after the welding unit finishes the welding of the steel coil, punching a hole at a position 110mm away from a welding seam, wherein the diameter of the punched hole is 10 mm;
s42: when the steel coil reaches the finished product annealing process, detecting the weld seam punching hole by using a high-speed camera, obtaining the weld seam position according to the light curtain cloth, and recording the weld seam position;
s43: and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
After the cutting, the weld cutting rate is verified to be 100% as shown in table 2.
Example 5
A high-speed camera is used as a hole detection device, a welding seam punching position w is set to be 170mm, the punching diameter is set to be 30mm, and welding seam position identification and cutting are carried out in a coil dividing process.
The method comprises the following specific steps:
s51: after the welding unit finishes the welding of the steel coil, punching a hole at a position 170mm away from the welding line, wherein the diameter of the punched hole is 30 mm;
s52: when the steel coil reaches the finished product annealing process, detecting the weld seam punching hole by using a high-speed camera, obtaining the weld seam position according to the light curtain cloth, and recording the weld seam position;
s53: and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
After the cutting, the weld cutting rate is verified to be 100% as shown in table 2.
Example 6
A high-speed camera is used as a hole detection device, the welding seam punching position w is set to be 190mm, the punching diameter is set to be 30mm, and welding seam position identification and cutting are carried out in the coil dividing process.
The method comprises the following specific steps:
s61: after the welding unit finishes the welding of the steel coil, punching a hole at a position 190mm away from the welding line, wherein the diameter of the punched hole is 30 mm;
s62: when the steel coil reaches the finished product annealing process, detecting the weld seam punching hole by using a high-speed camera, obtaining the weld seam position according to the light curtain cloth, and recording the weld seam position;
s63: and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
After the cutting, the weld cutting rate is verified to be 100% as shown in table 2.
Comparative examples 4 to 6 were those in which the method according to the present invention was not used, and the weld was directly cut off in the coil dividing step according to experience, and after the cut-off, it was verified that the weld cutting-off rates of comparative examples 4 to 6 were 43%, 52%, and 45% in this order, as shown in table 2.
The weld removal ratios of examples 4-6 and comparative examples 4-6 were compared as shown in table 1:
TABLE 2 weld bead removal ratio of examples 4 to 6 and comparative examples 4 to 6
According to the embodiment, when the high-speed camera is used as the hole detection device and the method provided by the invention is adopted, the welding line identification and cutting rate reaches 100%, the problem that the oriented silicon steel welding line cannot be accurately positioned and cut is effectively solved, and the multi-process combined accurate cutting of the welding line in the coil is realized.
Therefore, according to the method for cutting the welding seam of the oriented silicon steel coil, the steel coil is welded by the welding unit, and then the hole is punched at the position away from the welding seam by the preset distance; then, when the steel coil reaches the finished product annealing process, detecting the weld seam punching by using a hole detection device, obtaining the weld seam position according to the weld seam punching, and recording the weld seam position; and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position. Therefore, the method utilizes the welding seam to punch holes, combines the hole detection device, and transmits the welding seam position information to the slitting process, so that the welding seam identification and removal rate is higher, the problem that the oriented silicon steel welding seam cannot be accurately positioned and removed is effectively solved, and the multi-process combination and accurate removal of the welding seam in the coil is realized.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above-mentioned embodiments are only for convenience of description of the invention, and are not intended to limit the invention in any way, and those skilled in the art will recognize that the invention can be practiced without departing from the spirit and scope of the invention.
Claims (6)
1. A method of weld excision for oriented silicon steel coils, characterized in that it comprises:
punching a hole at a position away from a welding line by a preset distance after the welding unit finishes welding the steel coil;
when the steel coil reaches the finished product annealing process, detecting the weld seam punching by using a hole detection device, obtaining the weld seam position according to the weld seam punching, and recording the weld seam position;
and in the coil splitting procedure, cutting off the welding seam according to the recorded welding seam position.
2. The weld removal method of claim 1 wherein the punch is located at the front of the weld or at the back of the weld.
3. The weld cutting method according to claim 2, wherein the predetermined distance between the punching position and the weld is 10 to 200 mm.
4. The weld removal method of claim 1, wherein the punched hole has an aperture size that is not equal to a conventional inter-coil weld punch size.
5. The weld removal method of claim 4, wherein the punched hole has a diameter d <15mm or a diameter d >30 mm.
6. The weld seam cutting method according to claim 1, wherein the hole detection device is a light curtain or a high-speed camera, the diameter of a hole prestored in the equipment is compared with the detected punching diameter, if the diameter of the hole is consistent with the detected punching diameter, the current position is regarded as the weld seam, and the position of the weld seam is recorded.
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| CN116274422A (en) * | 2023-03-23 | 2023-06-23 | 首钢智新迁安电磁材料有限公司 | Method and device for detecting connecting weld joint |
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