KR19980051150A - Powder ring and plating peeling measuring device and method of plated steel sheet - Google Patents

Abstract

The present invention, after performing the automatic cutting and cleaning of the plated steel sheet, automatically measuring the plating adhesion and powdering properties through the bender, sample transfer device and colorimeter, etc. The present invention relates to a method and apparatus for automatically measuring powdering and plating adhesion of a plated steel sheet, which enables to secure an improvement in plating quality by enabling feedback control and prevents a safety accident by eliminating manual inspection by an inspector. In addition, the apparatus of the present invention, in the apparatus for measuring the powder ring and plating peeling of the plated steel sheet, it is possible to move back and forth, left and right and shankdong, the water droplet member 23 is equipped with a means for fixing the specimen of the plated steel sheet Attachment and removal of the tape having a specimen conveying member (4) having a vertical member 29 capable of adsorbing the tape to be attached and removed on the surface of the specimen by a vacuum formed in the inner space, which can be moved back and forth, left and right, and vertical movement A member 14, a colorimeter 27 for measuring the whiteness of the plated chip or powder surface detached from the specimen, and the data value read by the colorimeter is converted into a peel index by powder index or weight difference. Pau of the plated steel sheet, characterized in that it comprises a means for automatically determining the quality grade 30 and the augment control means 31 for controlling the operation of the members Providing a ring and plating peeling measuring devices.

Description

Powder ring and plating peeling measuring apparatus and method of plated steel sheet.

The present invention relates to an apparatus and a method for automatically measuring the plating adhesion between the plated layer and the base iron after plating and the powdering (POWDERING) of the plated layer in the plated steel sheet, and more particularly, after the plating operation is completed The most important quality evaluation item relates to an apparatus and method for automatically extracting a specimen of a plated product and performing an ultrasonic cleaning and peeling test in order to evaluate the adhesion of the plating layer to the base iron and the powdering property of the plating layer itself.

Until now, the coating layer peeling test has been used to cut the plated steel sheet to a certain size, and then attach the scotch tape on the surface of the steel sheet and perform a Bendung test to bend it at a certain angle. There are two methods for measuring the difference in weight by visually inspecting or weighing the plated steel sheet with a primary weight followed by a comdrawing test.

Although the bending test is slightly different for each company and demand, it is an inaccurate method in terms of visual inspection of the inspector, and the drawing test method, which measures quantitatively, also generates errors depending on test conditions such as punching pressure and punching speed of the inspector. Have

The present invention has been made to solve such a conventional problem, the object of the test is to automatically determine the plated steel sheet after performing the automatic determination and cleaning of the coating adhesion and powdering through the vendor, sample transfer device and colorimeter, etc. It provides reliability and reproducibility, and provides automatic measuring device and method for powdering and plating adhesion of plated steel sheet which prevents safety accidents by enabling feedback control to the whole process in case of quality abnormality.

1 is a schematic view of an automatic powdering and plating peeling measuring apparatus according to an embodiment of the present invention,

Figure 2 is a bottom cross-sectional view of the drop member of the specimen transfer device provided in the apparatus according to Figure 1;

3 is a cross-sectional bottom view of the head portion of the tape conveying apparatus provided in the apparatus according to FIG.

4a is a schematic diagram of a bending tester used in the apparatus according to FIG.

4b is a schematic illustration of a comb drawing tester for use with the apparatus according to FIG.

Figure 5a is a flow chart for explaining a powdering property measuring method according to an embodiment of the present invention,

Figure 5b is a flow chart for explaining a plating peeling measuring method according to an embodiment of the present invention.

※ Explanation of Signs of Major Parts of Drawings

1: steel plate 2a, 2b: knife

4: Specimen Feeder 8: Cleaning Tank

9: dryer 10: weighing scale

11: bending tester 12: drawing drawing tester

14: tape feeder 25: tape storage tank

26: Tape 27: colorimeter

30: Product judgment computer 31: Central control unit

In order to achieve the above object, the present invention as a first side, in the apparatus for measuring the powder ring and plating peeling of the plated steel, means for moving back and forth, left and right and shangdong means for fixing the specimen of the plated steel sheet A vertical transfer member (4) having a vertical member (23) mounted thereon, and a vertical member capable of adsorbing a tape to be attached to and removed from the surface of the specimen by vacuum formed in the inner space, and capable of moving back and forth, left and right and vertically. A tape attachment and removal member 14 having a 29, a color metric 27 for measuring the whiteness of the surface of the tape with the plating chip or powder detached from the specimen, and a data value read by the colorimeter. It is made by committing the means 30 for automatically determining the quality grade in terms of the peeling index by the index or the weight difference, and the increasing control means 31 for controlling the operation of the members. It provides the coated steel sheet powdering and plating separation measuring device according to claim.

In addition, the present invention as a second aspect, in the method of measuring the powdering property of the plated steel sheet, the step of washing and drying the specimen taken from the plated steel sheet, the step of attaching a tape to the dried specimen and the bending test and And measuring the whiteness of the surface of the long-term tape with a colorimeter by removing the tape from the specimen, and automatically determining the quality grade by converting the data value read by the colorimeter into a withdrawal index. Provides a method for measuring powdering of steel sheet.

In addition, the present invention is a third aspect, in the method for measuring the plating adhesion of the plated steel sheet, washing the specimen taken from the plated steel sheet and drying the specimen, and after checking the weight of the dried specimen cup Drawing test, washing and drying the tested specimens, drying and checking the weight, subtracting the checked weight after the comdrawing test from the weight checked before the cup drawing test, and calculating the peeling amount; It provides a method of measuring the adhesion of the plated steel sheet comprising the step of determining the product grade from the peel amount value.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the attached drawings.

1 is a block diagram schematically showing a powder ring and plating peeling magnetic measuring device of a plated steel sheet according to the present invention.

Referring to Fig. 1, the apparatus is installed at a place suitable for the peeling test of the steel sheet 1 on one side of the steel sheet of the plating line, and the knife is connected to the knife 2a and 2b for cutting the steel sheet to an appropriate size. (17a) (17b) and cylindrical support members (18, 18a) fixed on a fixed base and connected to the specimen transfer device (4) or the tape transfer device (14), respectively. The upper inner side of the support member 18 connected to the specimen transfer member 4 is fitted with a horizontal rotating member 19 so as to be rotatable, and the horizontal member 19 is mounted on the upper side of the support member 18. It is installed to be rotatable in a horizontal state.

One end of the first link member 21 is rotatably mounted by the servo motor 52 at the upper end of the horizontal rotating member 19, and the rotation direction of the first link member 21 is the other end thereof. The direction of rotation of the image in the upper and lower directions. At the other end of the second link member 22, the upper end of the water drop member 23 is rotatable by the servo motor 24, and an electromagnet (not shown) for fixing the specimen is embedded therein.

On the other hand, there is a washing tank (8) containing a sodium compound-based cleaner on one side for cleaning the sample, and then there is a dryer (9) for drying hot air to remove moisture after cleaning. Weighing machine (10) weighing the plated steel plate washed successively, the bending tester (11) having a 'V' shape at a predetermined angle for the powdering test, or the drawing tester (12) for the plating layer peeling test, And a tape storage box 25 to be supplied to the plated steel sheet is provided. After the peeling test, there is a tape attaching and removing device 14 equipped with an air inhaler 28 which removes the attached tape and transfers it to the colorimeter 27. The structure of the tape attaching and removing device 14 is a supporting member 18a. ), The horizontal rotation member 19a, the servo motors (20a, 52a, 24a) and the first link member 21a and the second link member 22a in that it is similar to the sample transfer device (4), but the head portion ( 29) The difference is that the air intake is attached to the inside instead of the electromagnet. One side of the tape feeder 14 has a tape reservoir and a tape 26. The tape is lubricated on the upper side to facilitate separation from the tape at the bottom, and the lower side is attached to the specimen with adhesive. In addition, the colorimeter (27) for measuring the whiteness of the tape coated with the plating chip or powder, and the product judgment computer 30 for receiving and storing the value read by the colorimeter and the value measured by the weight scale, and a series of such The central control unit 31 for continuously performing the work is provided in the apparatus.

2 is a cross-sectional view of the drop member 23 of the specimen conveying apparatus 4 for conveying the determined specimen 1. Referring to Figure 2, the lower end of the vertical member 23 is mounted to the head portion 33 to form a closed inner space 36. And the lower end of the head portion is equipped with an electromagnet 43 is operable by a power source (not shown) and attach the specimen through the rod 32 connected to the electromagnet. The outer surface angular side of the vertical rod 33a is hinged so that the cylinders 44, such as oil pressure, are rotatably opposed to each other, and each rod 34 end of the cylinder is formed in a 'c' shape and has one end end The hinge part is rotatably connected to the head and the specimen noise clamp 35 is configured to hold the specimen so that the bent inner sides face each other.

Fig. 3 is a cross sectional view of the drop member of the tape attaching and removing device for attaching the tape onto the specimen surface. Referring to FIG. 3, a head portion 38 is formed at the lower end of the water drop member 29 to form a closed inner space 37, and the upper side of the head portion, i.e., the lower portion of the vertical rod 38a, adsorbs the tape. The member 39 is coupled, and the tape adsorption member forms a space therein, the space 37 forms a vacuum by the vacuum pump 40, and the vacuum tube 41 is appropriately provided with a plurality of air on the upper side thereof. It was connected to the suction port 45 to allow the tape to be adsorbed. In addition, both sides of the outer surface of the vertical rod 3Sa are hinged so that cylinders 42, such as hydraulic pressure, can rotate to face each other. In addition, the 'c' shaped portion 42b is formed at an end of each rod 42a of the cylinder and is hinged to the vertical rod 38a so as to be rotatable, and the inner side is bent toward the lower side of the 'c' shaped portion. Tape noise clamps 44 are formed so as to face each other.

Figure 4a is a side view of the bending tester for the powdering test, the plated layer 3 is placed on a die 45 having a constant angle and bent test under a constant load by a punch 46 having a plane biaxial or triaxial plating plated layer When fine plating chips or powders are generated in the tape, the tape is blackened, and the blackening becomes more severe. Whiteness is measured by a colorimeter designed to have an exponent ranging from 0 to 100 and closer to black approaching the exponential zero, and conversely closer to white.

FIG. 4B is a side view of the drawing drawing tester for evaluating the adhesion of the plating, and when the drawing of the specimen of a certain size is carried out at a predetermined load, the portion of the die 47 and the punch 48 in contact with each other or the portion 49 subjected to compression or tensile force is If the plated layer is inferior in adhesion with the base steel, peeling of the plated layer occurs, and the peeled amount is calculated by dividing the weight difference before and after cup drawing by the cross section of the specimen.

Referring to the operation of the present invention having the above configuration is as follows.

First, in order to evaluate the plating adhesion of the plated steel sheet 1 using the apparatus shown in Figs. (2) cut the steel sheet 1 to a predetermined size to make the specimen (3), and then the specimen transfer device (4) is operated to stick the specimen to the specimen attachment rod (32) connected to the electromagnet (43) In order to remove foreign substances on the surface of the specimen by the rotating member 19, it is sent to a washing liquid tank 8 made of sodium compound for ultrasonic degreasing, and the dryer 9 for the subsequent drying, the specimen gravimetric 10 and the bending tester ( 11) or to the drawing machine 12. First, in the bending test for the powdering test, when the test piece sensor 13 detects that the test piece is located in the bending tester, the tape transfer device 14 for attaching the tape to the test piece operates on the opposite side. When the sensing sensor 15 detects that the specimen is located in the bending tester, the tape feeder 14 is operated by operating the servo motors 50, 53, 54 of the tape feeder on the table prepared in the tape box 25. Moves to the tape box position and operates the vacuum pump 40 connected to the tape adsorption member in such a state, the vacuum generated by the vacuum pump causes the internal space 37 of the tape adsorption member to be evacuated through the vacuum tube 41. Change to phase.

That is, the outer surface portion of the tape adsorption member connected to the plurality of through holes 45 in the inner space is changed to a state of vacuum to attract the object, and thus the tape is adsorbed semicircularly on the lower surface of the tape adsorption member. The tape adsorbed continuously is moved to the place where the specimen is placed by the specimen detection sensor 13, and the tape adsorption member is moved to put the tape on the specimen surface and the vacuum state of the adsorption member is released. The punch 46 is then lowered to a constant load on the die 45 of the bending tester. If the plating layer is not strong, fine plating powder is pulled off from the outer surface of the plating layer and attached to the tape, and the tester catches the specimen. When it is in place, the tape removal clamp is activated to grab the tape hand part 51 which contains the fluorescent material and raise it from the specimen. When it is detected that it is located in the colorimeter, the colorimeter measures the whiteness on the tape and transmits this data to the product judgment computer. The grade is determined according to the degree of blackening of the product.

Then, in the case of plating peeling test for plating adhesion test, after cleaning the specimen, it is sent to the weighing scale for weighing first, read the value to the product determination computer, and immediately sent to the comdrawing tester (12). If it is recognized by the specimen detecting sensor that it is located in the comb drawing tester 12, the punch 48 falls on the die 47 of the comb drawing tester with a constant load. In this state, the specimen feeder of the specimen feeder sends the specimen back to the weighing machine, reads the secondary weight value, and sends it to the product judgment computer to calculate the weight difference and peeling amount before and after the drawing process. According to the product grade, the operator can change the plating working condition appropriately while checking the quality grade of the plated steel sheet.

Although the present invention has been described and illustrated with reference to one preferred embodiment thereof, it will be apparent to those skilled in the art that various changes and modifications can be made to the above embodiments without departing from the gist of the present invention.

As described above, according to the powdering and plating peeling automatic measuring apparatus and method of the plated steel sheet according to the present invention, the powder ring ang by the colorimeter by the automated device and the measurement to measure the plating adhesion of the plated steel sheet It is possible to measure plating quality by converting the quantity into quantitative value such as calculating the amount of peeling due to the difference in weight, and accurately measuring the plating adhesion and powdering property of the coated steel sheet and using it for process control to measure the current quality level. Judging and feeding back to the plating process quickly in case of quality abnormality can drastically reduce the quality defects, and has a good practical effect to prevent the risk of safety accidents of the tester by eliminating the conventional manual test.

Claims (2)

Apparatus for measuring powdering and plating peeling of a plated steel sheet, the specimen conveying member (4) having a vertical member (23) which can be moved back and forth, left and right and vertically and equipped with means for fixing the specimen of the plated steel sheet (4) And a tape attaching and removing member 14 having a water drop member 29 capable of adsorbing a tape to be attached and removed on the surface of the specimen by vacuum formed in the inner space. Colorimeter 27 for measuring the whiteness of the surface of the plating chip or powder attached to the specimen and the tape attached to the powder, and converting the data value read by the colorimeter into the peeling index by powder index or weight difference to automatically determine the quality grade. Powdering and plating peeling measuring apparatus of the plated steel sheet, characterized in that the cover comprises means 30 and the central control means 31 for controlling the operation of the members In the method of measuring the powdering property of the coated steel sheet, washing the specimen taken from the plated steel sheet and drying it, attaching a tape to the dried specimen and bending it, removing the tape from the specimen, and then using a colorimeter. Measuring the whiteness of the surface of the tape and converting the data value read by the colorimeter into a powder index to automatically determine the quality grade.