CN114509554B - Steel plate blanking quality judging method and terminal equipment - Google Patents
Steel plate blanking quality judging method and terminal equipment Download PDFInfo
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- CN114509554B CN114509554B CN202210120268.3A CN202210120268A CN114509554B CN 114509554 B CN114509554 B CN 114509554B CN 202210120268 A CN202210120268 A CN 202210120268A CN 114509554 B CN114509554 B CN 114509554B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 124
- 239000010959 steel Substances 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000004080 punching Methods 0.000 claims abstract description 329
- 238000010008 shearing Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 10
- 238000011161 development Methods 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 235000012431 wafers Nutrition 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001303 quality assessment method Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/204—Structure thereof, e.g. crystal structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention discloses a steel plate blanking quality judging method and terminal equipment, wherein the method comprises the following steps: s1, obtaining a steel plate sample to be blanked with a preset thickness; s2, mounting a steel plate sample to be blanked on a punching die and mounting a punching male die and a punching female die; s3, setting punching speed; s4, starting punching equipment, and punching a to-be-punched steel plate sample to obtain a punched sample; s5, repeatedly executing the S1 to S4 to obtain a first group of punching sample wafers; s6, replacing the punching male die and/or the punching female die i times, and repeatedly executing the steps S1 to S4 after each replacement to obtain i groups of punching sample sheets; s7, shearing each punching sample piece in the plurality of groups of punching sample pieces along the punching circle center to obtain a plurality of groups of semicircular punching sections; and S8, determining that the blanking quality corresponding to the steel plate sample to be blanked is good when judging that layering phenomenon does not exist in the semicircular blanking sections. By adopting the invention, convenience and high efficiency of blanking quality judgment can be realized.
Description
Technical Field
The invention relates to the technical field of steel plate blanking, in particular to a steel plate blanking quality judging method and terminal equipment.
Background
The hot-rolled pickled steel plate is obtained by taking hot-rolled steel as a raw material, removing oxidized iron scales on the surface through an pickling process, and then carrying out trimming and finishing procedures. The thickness is generally larger than that of a cold-rolled steel sheet, nonmetallic impurities in the material are pressed into a sheet shape, layering phenomenon or strip-shaped hollows occur, and the tensile property of the hot-rolled pickled steel sheet along the thickness direction is greatly weakened. Therefore, the establishment of the evaluation or judgment method for the blanking quality of the high-strength acid-washed steel plate is the basis and key for researching the edge forming performance of the high-strength acid-washed steel plate.
Disclosure of Invention
According to the embodiment of the application, the steel plate blanking quality judging method is provided, so that the study on the edge forming performance of the steel plate is realized.
In one aspect, the present application provides, by an embodiment of the present application, a method for determining blanking quality of a steel plate, the method including:
s1, obtaining a steel plate sample to be blanked with a preset thickness;
s2, mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die and a punching female die on the punching die;
s3, setting the punching speed of the punching equipment;
s4, starting the punching equipment, and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample;
s5, repeatedly executing the steps S1-S4 (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer;
s6, replacing the punching male die and/or the punching female die i times, and repeating after each replacementExecution b i Step S1-S4 is repeated to correspondingly obtain i groups of punching sample pieces, wherein each group of punching sample pieces comprises b i Each of the punched coupons, i and b i The sizes of the punching male dies are all positive integers, the sizes of the punching female dies are sequentially increased, and the sizes of the punching female dies are sequentially increased;
s7, shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections;
and S8, determining that the blanking quality corresponding to the steel plate sample to be blanked is good when judging that layering phenomenon does not exist in the first group of semicircular blanking sections and the i group of semicircular blanking sections.
Optionally, before the step S8, the method further includes:
judging whether layering exists in the bright band and the tearing band of each semicircular blanking section in the first group of semicircular blanking sections and the i group of semicircular blanking sections, and determining the target number of the semicircular blanking sections in which layering occurs.
Optionally, the step S8 further includes:
and if the target number is lower than a first threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is good.
Optionally, the method further comprises:
and if the layering phenomenon exists in the first group of semicircular blanking sections and the i group of semicircular blanking sections or the target number exceeds a second threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is poor.
Optionally, the step S1 includes:
acquiring a material steel plate with a preset thickness;
and cutting the material steel plate according to the size of the blanking die to obtain the steel plate sample to be blanked with the size.
Optionally, the preset thickness is between 1.0mm and 6.0 mm.
Optionally, in the step S2, a punching gap corresponding to the punching die is 12% of the preset thickness.
Optionally, after the punching male die and/or the punching female die are replaced for the first time in the step S6, a punching gap corresponding to the punching die is 20% of the preset thickness.
Optionally, after the punching male die and/or the punching female die are replaced for the second time in the step S6, a punching gap corresponding to the punching die is 28% of the preset thickness.
Optionally, the method is applied to room temperature test conditions, and the room temperature is 10-35 ℃.
In another aspect, the present application provides a steel plate blanking quality determining apparatus according to an embodiment of the present application, the apparatus including an acquisition module, an installation module, a setting module, a blanking module, a replacement module, a shearing module, and a determination module, wherein,
the acquisition module is used for acquiring a steel plate sample to be punched with a preset thickness;
the mounting module is used for mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die and a punching female die on the punching die;
the setting module is used for setting the punching speed of the punching equipment;
the blanking module is used for starting the punching equipment, and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample; repeating the steps executed by the acquisition module, the installation module, the setting module and the blanking module (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer;
the replacing module is used for replacing the punching male die and/or the punching female die for i times, and b is repeatedly executed after each replacement i Performing the related steps to obtain i groups of punched sample pieces, wherein each group of punched sample pieces comprisesb i Each of the punched coupons, i and b i The sizes of the punching male dies are all positive integers, the sizes of the punching female dies are sequentially increased, and the sizes of the punching female dies are sequentially increased;
the shearing module is used for shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections;
and the determining module is used for determining that the blanking quality corresponding to the steel plate sample to be blanked is good when the layering phenomenon does not exist in the first group of semicircular blanking sections and the i group of semicircular blanking sections.
For what is not described or described in the present application, reference may be made to the relevant description in the foregoing method embodiments, which is not repeated herein.
In another aspect, the present application provides, according to an embodiment of the present application, a terminal device, including: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through the bus and complete communication with each other; the memory stores executable program code; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for executing the steel plate blanking quality determining method as described above.
In another aspect, the present application provides a computer-readable storage medium storing a program that, when run on a terminal device, performs the steel plate blanking quality determining method as described above.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages: s1, obtaining a steel plate sample to be blanked with preset thickness; s2, mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die and a punching female die on the punching die; s3, setting the punching speed of the punching equipment; s4, starting stationThe punching equipment is used for punching and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample; s5, repeatedly executing the steps S1-S4 (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer; s6, replacing the punching male die and/or the punching female die i times, and repeatedly executing the step b after each replacement i Step S1-S4 is repeated to correspondingly obtain i groups of punching sample pieces, wherein each group of punching sample pieces comprises b i Each of the punched coupons, i and b i The sizes of the punching male dies are all positive integers, the sizes of the punching female dies are sequentially increased, and the sizes of the punching female dies are sequentially increased; s7, shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections; and S8, determining that the blanking quality corresponding to the steel plate sample to be blanked is good when judging that layering phenomenon does not exist in the first group of semicircular blanking sections and the i group of semicircular blanking sections. The steel plate blanking quality judging method is simple to operate, stable in blanking quality and high in inspection efficiency, stable in blanking quality can be guaranteed, and convenience and high efficiency in blanking quality judgment can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for determining blanking quality of a steel plate according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a punching die provided in an embodiment of the application.
Fig. 3 is a flow chart of another method for determining blanking of a steel plate according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a steel plate blanking quality determining apparatus according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
During the course of the applicant's presentation of this application it was found that: because the high-strength acid washing steel plate has higher strength and lower plasticity, the cutting edge of the blanking die is extremely easy to wear. In addition, the gap of the blanking concave-convex die is different, the quality of the section after blanking is poor, the bright band is uneven in specific width, the tearing band is rough, burrs are accompanied at the edge of the tearing band, and blanking layering phenomenon can occur in the tearing band area when the edge of the tearing band is severe, so that the forming performance of the follow-up edge of the part is greatly affected.
In order to meet the requirements of enterprise production efficiency and edge forming quality, the method for evaluating/judging the blanking quality of the high-strength acid-washed steel plate is studied intensively. Particularly punching and blanking a high-strength acid washing steel plate with a certain thickness by using a punching die of a plate comprehensive forming test machine; the punching male die is unchanged, and the blanking annular sections (namely semicircular blanking sections) with different punching gap sizes are obtained by blanking the high-strength acid washing steel plates with the same thickness by changing the diameter of the female die. Firstly, observing whether the annular section of the tearing belt has layering cracking phenomenon parallel to the plate surface or not by a macroscopic observation method; secondly, if the annular belt surface of the tearing belt has no obvious layering cracking phenomenon, the annular belt surface is cut in a straight shape through a hole center of a punching hole, and whether the annular section has cracks extending to the core part of the plate is observed under an electron microscope. The scheme can be used for detecting the quality problem of the high-strength acid washed steel plate on the blanking interruption surface, and plays a role in guiding significance in actual production.
The embodiment of the application solves the technical problems that the prior art cannot realize steel plate quality judgment and steel plate edge forming performance evaluation by providing the steel plate blanking quality judgment method.
The technical scheme of the embodiment of the application aims to solve the technical problems, and the overall thought is as follows: s1, obtaining a steel plate sample to be blanked with preset thicknessA sheet; s2, mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die and a punching female die on the punching die; s3, setting the punching speed of the punching equipment; s4, starting the punching equipment, and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample; s5, repeatedly executing the steps S1-S4 (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer; s6, replacing the punching male die and/or the punching female die for i times, and repeatedly executing the step b after each replacement i Step S1-S4 is repeated to correspondingly obtain i groups of punching sample pieces, wherein each group of punching sample pieces comprises b i Each of the punched coupons, i and b i The sizes of the punching male dies are all positive integers, the sizes of the punching female dies are sequentially increased, and the sizes of the punching female dies are sequentially increased; s7, shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections; and S8, determining that the blanking quality corresponding to the steel plate sample to be blanked is good when judging that layering phenomenon does not exist in the first group of semicircular blanking sections and the i group of semicircular blanking sections.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
First, the term "and/or" appearing herein is merely an association relationship describing associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Fig. 1 is a schematic flow chart of a steel plate blanking quality determining method according to an embodiment of the present application. The method as shown in fig. 1 comprises the following implementation steps:
s1, obtaining a steel plate sample to be blanked with a preset thickness.
The application determines that the test is performed at room temperature in the range of 10 ℃ to 35 ℃. The punching position is determined on the high-acid-washing steel plate with a certain thickness specification t, and the steel plate is cut into one or more steel plate sample pieces to be punched, which are in a size required by a blanking die (also called a plate die). The predetermined thickness t is not limited, and may be, for example, between 1.0mm (millimeter) and 6.0mm, and it is preferable to take a steel sheet of high pickling material to have a thickness of 2.0mm. The size of the blanking die is not limited herein, and may be 90mm by 90mm, for example.
S2, mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die with a preset first size and a punching female die with a preset second size on the punching die.
According to the method, based on the steel plate sample to be punched with the preset thickness t, a punching die is installed according to the inner diameter size of the punching die (namely, the punching die with the preset second size) recommended by the national standard of the national standard GBT24524-2009 metal material sheet and thin strip reaming test method, and the corresponding punching gap is about 12% of the preset thickness. And mounting the steel plate sample to be punched on a punching die, mounting a punching male die with a preset first size on the punching die, and determining the guidance of the male die during movement by matching with the punching female die.
The preset first size and the preset second size are set by a system in a self-defined manner, and the application is not limited. For example, a steel sheet of 2.0mm gauge is recommended to use a blanking punch die of 10.5mm, a punch die of 10mm (deviation of about/up-down of 0.02 mm) size, and the like.
For example, please refer to fig. 2, which is a schematic diagram illustrating punching according to an embodiment of the present application. The drawing shown in fig. 2 includes a steel plate 201 washed with strong acid, a punching die 202, and a punching punch 203. In the drawing, a steel plate 201 is installed between the punching die 202 and the punching punch 203.
S3, setting the punching speed of the punching equipment.
The punching speed is not limited in this application, and preferably the punching speed may be 10mm/min.
S4, starting the punching equipment, and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample;
s5, repeating the step S1-S4 of the step (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer.
The application starts the punching equipment, and after the punching action is completed, the corresponding punching sample is taken out. Repeating the experimental step (a-1) for a plurality of times to obtain a first group of punched dailies, wherein a is a positive integer set by system user definition, for example, a=4, etc.
S6, replacing the punching male die and/or the punching female die for i times, and repeatedly executing the step b after each replacement i Step S1-S4 is repeated to correspondingly obtain i groups of punching sample pieces, wherein each group of punching sample pieces comprises b i Each of the punched coupons, i and b i The size of the punching male die after each replacement is larger than the preset first size, and the size of the punching female die after each replacement is larger than the preset second size.
According to the method, the punching female die and/or the punching male die with larger sizes can be replaced for multiple times, and the steel plate sample pieces with the same preset thickness specification are tested according to the steps S1-S4, so that multiple groups of punching sample pieces are obtained. Wherein the punching female die and/or the punching male die which are replaced each time are sequentially increased.
For example, after a first group of punching sample pieces are obtained, replacing a punching female die with a larger size, and testing the steel plate sample pieces with the same preset thickness specification according to the steps S1-S4 to obtain a second group of punching sample pieces. And then continuously increasing the size of the punching female die, and repeating the steps S1-S4 to perform the test to obtain a third group of punching sample pieces. Optionally, after the first die replacement, the punching gap corresponding to the punching die is 20% of the preset thickness. After the die is replaced for the second time, the punching gap corresponding to the punching die is 28% of the preset thickness.
S7, shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections.
The application cuts the obtained multiple groups of punching sample pieces (specifically, the first group of punching sample pieces and the i group of punching sample pieces) along the punching circle center to obtain the corresponding semicircular blanking section.
And S8, determining that the blanking quality corresponding to the steel plate sample to be blanked is good when judging that layering phenomenon does not exist in the first group of semicircular blanking sections and the i group of semicircular blanking sections.
Before S8, the method can judge whether layering exists in the bright band and the tearing band of each semicircular blanking section in the first group of semicircular blanking sections and the i group of semicircular blanking sections, and determine the target number of semicircular blanking sections in which layering occurs. Further, the quality of the steel sheet sample to be blanked can be determined according to the determined target number.
Specifically, the method can put the multiple groups of semicircular blanking sections under an electron microscope to observe whether layering phenomenon exists in the bright band and the tearing band of each semicircular blanking section, and if not, the blanking quality is judged to be good; otherwise, the blanking quality is poor. Or when the target number is lower than a first threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is good. Otherwise, determining that the blanking quality corresponding to the steel plate sample to be blanked is poor. The first threshold is a value set by the system in a self-defining manner, for example, it may be 0. When the first threshold value is 0, the layering phenomenon is shown or not in the semicircular blanking section.
Through implementing this application, have following beneficial effect:
1. the guiding performance of the male die during movement is determined by being matched with the female die, so that the uniformity of blanking quality around a punching hole is ensured.
2. The feasibility of the scheme is ensured by referring to the national standard GBT24524-2009 metal material sheet and thin strip reaming test method.
3. By setting the punching speed (10 mm/min), under the condition that the brittleness of the steel plate is unchanged, cracks near the cutting edge of the female die can be expanded for a sufficient time until the cracks break, thereby ensuring the initiation and development of microcracks at various stress concentration points and laying a foundation for blanking quality evaluation.
4. The blanking clearance is controlled by increasing the size of the punching female die, the bending moment in the material deformation zone near the blanking cutting edge is increased, the stress mainly becomes tensile stress, and cracks generated near the upper cutting edge and the lower cutting edge of the material are not overlapped. After blanking is finished, the bright area of the section is reduced, and the tearing area is coarser, so that the section quality assessment is more visual.
To assist the user in better understanding the present application, a specific example is described below. For example, 980HE high Kong Kuo steel is selected in the present application, and fig. 3 is a schematic flow chart of another method for determining blanking of a steel plate according to an embodiment of the present application. The method as shown in fig. 3 comprises the following implementation steps:
s31, selecting a high-strength acid washing material steel plate with the thickness of 2.0mm, cutting the material steel plate by a plate shearing machine to obtain a size 90mm required by a Chen Laliao die, and recommending a blanking female die with the size of 10.5mm for a steel plate with the size of 2.0mm by referring to a national standard GBT24524-2009 metal material sheet and thin strip reaming test method.
S32, installing a punching male die with the size ofmm, checking whether the cutting edge of the male die is severely worn and ensuring the coaxial matching of the male die and the female die, and particularly referring to fig. 2.
S33, placing the steel plate sheet with the size of 90 x 90mm according to the position of the locating pin of the punching die, starting the punching equipment, and taking out the punching sample sheet after the punching action is completed. Repeating the steps S31-S33 for three times to obtain a first group of punching sample pieces.
S34, replacing the blanking punching die with the thickness of 10.8mm, and testing the steel plate sample pieces with the same thickness specification according to the steps S31-S33 to obtain a second group of punching sample pieces.
S35, replacing the blanking punching die with the thickness of 11.1mm, and testing the steel plate sample pieces with the same thickness specification according to the steps S31-S33 to obtain a third group of punching sample pieces.
S36, shearing the three groups of punching sample pieces along the punching circle center to obtain corresponding semicircular blanking sections. And (3) putting the three groups of semicircular blanking sections under an electron microscope to observe whether layering phenomenon exists in the bright band and the tearing band.
If no delamination occurs, it is determined that the blanking quality of the steel sheet is good.
S38, if layering occurs, the blanking quality of the steel plate can be judged to be poor.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages: s1, obtaining a steel plate sample to be blanked with preset thickness; s2, mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die with a preset first size and a punching female die with a preset second size on the punching die; s3, setting the punching speed of the punching equipment; s4, starting the punching equipment, and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample; repeating the steps S1-S4 (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer; s5, replacing the punching male die and/or the punching female die i times, and repeatedly executing the step b after each replacement i Step S1-S4 is repeated to correspondingly obtain i groups of punching sample pieces, wherein each group of punching sample pieces comprises b i Each of the punched coupons, i and b i The sizes of the punching male dies after each replacement are all positive integers, and the sizes of the punching female dies after each replacement are all larger than the preset first size; s6, shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections; s7, determining the steel to be blanked when no layering phenomenon exists in the first group of semicircular blanking sections and the i group of semicircular blanking sectionsThe corresponding blanking quality of the plate sample is good. The steel plate blanking quality judging method is simple to operate, stable in blanking quality and high in inspection efficiency, stable in blanking quality can be guaranteed, and convenience and high efficiency in blanking quality judgment can be realized.
Based on the same inventive concept, another embodiment of the present application provides an apparatus and a terminal device for implementing the method for determining blanking quality of a steel plate in the embodiment of the present application.
Fig. 4 is a schematic structural diagram of a steel plate blanking quality determining apparatus according to an embodiment of the present application. The apparatus 40 as shown in fig. 4 comprises an acquisition module 401, an installation module 402, a setting module 403, a blanking module 404, a replacement module 405, a shearing module 406 and a determination module 407, wherein,
the obtaining module 401 is configured to obtain a steel plate sample to be blanked with a preset thickness;
the mounting module 402 is used for mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die and a punching female die on the punching die;
the setting module 403 is configured to set a punching speed of the punching device;
the blanking module 404 is configured to start the punching device, and perform blanking and punching on the steel plate sample to be blanked by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample; repeating the steps performed by the obtaining module 401, the installing module 402, the setting module 403 and the blanking module 404 (a-1) for a plurality of times to obtain a first set of punched samples, wherein the first set of punched samples comprises a number of punched samples, and a is a positive integer;
the replacing module 405 is configured to replace the punching male die and/or the punching female die i times, and repeatedly perform b after each replacement i The steps performed by the obtaining module 401, the installing module 402, the setting module 403, and the blanking module 404 are repeated to obtain i groups of punched samples, each group of punched samples including b i Each of the punched coupons, i and b i Are allThe size of the punching male die is sequentially increased by a positive integer, and the size of the punching female die is sequentially increased by a positive integer;
the shearing module 406 is configured to shear each of the first set of punched sample pieces and the i set of punched sample pieces along a punching circle center to obtain a corresponding first set of semicircular blanking sections and i set of semicircular blanking sections;
the determining module 407 is configured to determine that the blanking quality corresponding to the steel plate sample to be blanked is good when it is determined that no layering phenomenon exists in the first set of semicircular blanking sections and the i set of semicircular blanking sections.
Optionally, the apparatus further comprises a judging module 408, wherein:
the judging module 408 is configured to judge whether a layering phenomenon exists in the bright band and the tearing band of each of the first set of semi-circular blanking sections and the i set of semi-circular blanking sections, and determine a target number of semi-circular blanking sections in which the layering phenomenon occurs.
Optionally, the determining module 407 is specifically configured to:
and if the target number is lower than a first threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is good.
Optionally, the determining module 407 is further configured to:
and if the layering phenomenon exists in the first group of semicircular blanking sections and the i group of semicircular blanking sections or the target number exceeds a first threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is poor.
Optionally, the obtaining module 401 is specifically configured to:
acquiring a material steel plate with a preset thickness;
and cutting the material steel plate according to the size of the blanking die to obtain the steel plate sample to be blanked with the size.
Optionally, the punching gap corresponding to the punching die in the mounting module 402 is 12% of the preset thickness.
Optionally, after the punching male die and/or the punching female die are replaced for the first time in the replacing module 405, a punching gap corresponding to the punching die is 20% of the preset thickness.
Optionally, after the punching male die and/or the punching female die are replaced for the second time in the replacing module 405, a punching gap corresponding to the punching die is 28% of the preset thickness.
Optionally, the device is applied to room temperature test conditions, and the room temperature is 10-35 ℃.
Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device 50 shown in fig. 5 includes: at least one processor 501, communication interface 502, user interface 503, and memory 504, the processor 501, communication interface 502, user interface 503, and memory 504 may be connected via a bus or otherwise, as exemplified by the embodiments of the present invention being connected via bus 505. Wherein,
the processor 501 may be a general purpose processor such as a central processing unit (Central Processing Unit, CPU).
The communication interface 502 may be a wired interface (e.g., an ethernet interface) or a wireless interface (e.g., a cellular network interface or using a wireless local area network interface) for communicating with other terminals or websites. In the embodiment of the present invention, the communication interface 502 is specifically used for punching speed and the like.
The user interface 503 may specifically be a touch panel, including a touch screen and a touch screen, for detecting an operation instruction on the touch panel, and the user interface 503 may also be a physical key or a mouse. The user interface 503 may also be a display screen for outputting, displaying images or data.
The Memory 504 may include Volatile Memory (Volatile Memory), such as random access Memory (Random Access Memory, RAM); the Memory may also include a Non-Volatile Memory (Non-Volatile Memory), such as a Read-Only Memory (ROM), a Flash Memory (Flash Memory), a Hard Disk (HDD), or a Solid State Drive (SSD); memory 504 may also include a combination of the types of memory described above. The memory 504 is used for storing a set of program codes, and the processor 501 is used for calling the program codes stored in the memory 504 to perform the following operations:
s1, obtaining a steel plate sample to be blanked with a preset thickness;
s2, mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die and a punching female die on the punching die;
s3, setting the punching speed of the punching equipment;
s4, starting the punching equipment, and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample;
s5, repeatedly executing the steps S1-S4 (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer;
s6, replacing the punching male die and/or the punching female die for i times, and repeatedly executing the step b after each replacement i Step S1-S4 is repeated to correspondingly obtain i groups of punching sample pieces, wherein each group of punching sample pieces comprises b i Each of the punched coupons, i and b i The sizes of the punching male dies which are replaced each time are sequentially increased, and the sizes of the punching female dies which are replaced each time are sequentially increased;
s7, shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections;
and S8, determining that the blanking quality corresponding to the steel plate sample to be blanked is good when judging that layering phenomenon does not exist in the first group of semicircular blanking sections and the i group of semicircular blanking sections.
Optionally, before the step S8, the processor 501 is further configured to:
judging whether layering exists in the bright band and the tearing band of each semicircular blanking section in the first group of semicircular blanking sections and the i group of semicircular blanking sections, and determining the target number of the semicircular blanking sections in which layering occurs.
Optionally, the processor 501 is further configured to:
and if the target number is lower than a first threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is good.
Optionally, the processor 501 is further configured to:
and if the layering phenomenon exists in the first group of semicircular blanking sections and the i group of semicircular blanking sections or the target number exceeds a second threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is poor.
Optionally, the step S1 includes:
acquiring a material steel plate with a preset thickness;
and cutting the material steel plate according to the size of the blanking die to obtain the steel plate sample to be blanked with the size.
Optionally, the preset thickness is between 1.0mm and 6.0 mm.
Optionally, in the step S2, a punching gap corresponding to the punching die is 12% of the preset thickness.
Optionally, after the punching male die and/or the punching female die are replaced for the first time in the step S6, a punching gap corresponding to the punching die is 20% of the preset thickness.
Optionally, after the punching male die and/or the punching female die are replaced for the second time in the step S6, a punching gap corresponding to the punching die is 28% of the preset thickness.
Optionally, the terminal equipment is applied to room temperature test conditions, and the temperature range of the room temperature is 10-35 ℃.
Since the terminal device described in this embodiment is a terminal device used for implementing the method for determining blanking quality of a steel plate in this embodiment, based on the determination of blanking quality of a steel plate described in this embodiment, those skilled in the art will be able to understand the specific implementation of the terminal device in this embodiment and various modifications thereof, so how this terminal device is implemented in this embodiment will not be described in detail herein. The terminal equipment used for determining the blanking quality of the steel plate in the embodiment of the present application is within the scope of protection intended by the present application.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages: the steel plate blanking quality judging method is simple to operate, stable in blanking quality and high in inspection efficiency, stable in blanking quality can be guaranteed, and convenience and high efficiency in blanking quality judgment can be realized.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A steel plate blanking quality judging method, characterized by comprising:
s1, obtaining a steel plate sample to be punched with a preset thickness, wherein the preset thickness is 1.0 mm-6.0 mm;
s2, mounting the steel plate sample to be punched on a punching die in punching equipment, and mounting a punching male die and a punching female die on the punching die;
s3, setting the punching speed of the punching equipment to be 10mm/min, and under the condition that the brittleness of the steel plate is unchanged, allowing sufficient time for cracks near the cutting edge of the female die to expand until the cracks break, so that the initiation and development of microcracks at various stress concentration points are ensured;
s4, starting the punching equipment, and punching the steel plate sample to be punched by using the punching male die and the punching female die at the punching speed to obtain a corresponding punched sample;
s5, repeatedly executing the steps S1-S4 (a-1) for a plurality of times to obtain a first group of punching sample pieces, wherein the first group of punching sample pieces comprises a number of punching sample pieces, and a is a positive integer;
s6, replacing the punching female die for i times, and repeatedly executing b after each replacement i Step S1-S4 is repeated to correspondingly obtain i groups of punching sample pieces, wherein each group of punching sample pieces comprises b i Each of the punched coupons, i and b i The sizes of the punching female dies which are replaced each time are sequentially increased;
s7, shearing each punching sample piece in the first group of punching sample pieces and the i group of punching sample pieces along the punching circle center to obtain a corresponding first group of semicircular blanking sections and i group of semicircular blanking sections;
and S8, determining that the blanking quality corresponding to the steel plate sample to be blanked is good when judging that layering phenomenon does not exist in the first group of semicircular blanking sections and the i group of semicircular blanking sections.
2. The method according to claim 1, characterized in that before said step S8, the method further comprises:
judging whether layering exists in the bright band and the tearing band of each semicircular blanking section in the first group of semicircular blanking sections and the i group of semicircular blanking sections, and determining the target number of the semicircular blanking sections in which layering occurs.
3. The method according to claim 2, wherein said step S8 comprises:
and if the target number is lower than a first threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is good.
4. The method according to claim 2, wherein the method further comprises:
and if the layering phenomenon exists in the first group of semicircular blanking sections and the i group of semicircular blanking sections or the target number exceeds a first threshold value, determining that the blanking quality corresponding to the steel plate sample to be blanked is poor.
5. The method according to claim 1, wherein the step S1 comprises:
acquiring a material steel plate with a preset thickness;
and cutting the material steel plate according to the size of the blanking die to obtain the steel plate sample to be blanked with the size.
6. The method according to claim 1, wherein the punching gap corresponding to the punching die in the step S2 is 12% of the preset thickness.
7. The method according to claim 1, wherein the punching die has a punching gap of 20% of the predetermined thickness after the first replacement of the punching die in step S6.
8. The method according to claim 7, wherein the punching die has a punching gap of 28% of the predetermined thickness after the second replacement of the punching die in step S6.
9. A terminal device, comprising: a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface are connected through the bus and complete communication with each other; the memory stores executable program code; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for performing the steel plate blanking quality determining method as set forth in any one of the preceding claims 1-8.
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