Tool and method for detecting weight and components of metal coating

Abstract

The invention provides a tool and method for detecting the weight and components of a metal coating, the tool comprises a base and a cup body, the top end of the base is provided with a clamping groove, the outer side of the bottom of the cup body is provided with a clamping block, and the clamping block is matched with the clamping groove; by means of the device, the plating layer can be accurately stripped from the sample, and the accuracy and stability of the weight and components of the plating layer are guaranteed; the weight of a coating of a product in a production line is regularly detected in a laboratory, samples on the operation side, the transmission side and the middle of the production line can be sequentially detected, and an online coating scanner is subjected to benchmarking and calibration by taking coating data of the laboratory as a standard; accuracy of data measured by the online scanner is guaranteed, and the weight of a coating of a single coil material produced each time meets the requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of coating production, and more specifically, to a detection tool and a detection method for the weight and composition of a metal coating. Background Art

[0002] The TKAS galvanized production line and aluminized production line can produce galvanized (GI / GA) products and aluminum (AS) products with a full range of specifications with a thickness of 0.38 - 3.5. Among them, there are sheet products such as hot base, automotive outer panel, high strength, and hot forming. Due to the influence of die stamping on the coating, customers have relatively high requirements for the coating weight and composition on the plate surface. Therefore, it is necessary to ensure the stability and accuracy of the coating weight and composition, and it is very necessary to ensure the test accuracy of the on-line testing instrument.

[0003] The existing detection of coating weight and composition has low efficiency, and the coating scanner has low accuracy. To ensure the stability and accuracy of the test results, that is, to ensure compliance with customer requirements and to ensure no waste of zinc ingots and aluminum ingots. A coating quantitative dissolution tester and a synchronous detection method are specifically designed. Summary of the Invention

[0004] The purpose of the present invention is to provide a detection tool and a detection method for the weight and composition of a metal coating, aiming to solve the problems of low efficiency in detecting the existing coating weight and composition and low accuracy of the coating scanner.

[0005] The present invention is realized through the following technical solutions: A detection tool for the weight and composition of a metal coating, comprising: a base and a cup body. A clamping groove is provided at the top end of the base, and a clamping block is provided on the outer side of the bottom of the cup body. The clamping block is adapted to the clamping groove.

[0006] To better implement the present invention, further, a bolt is provided inside the base, and a sample top plate is fixedly connected to the top end of the bolt.

[0007] To better implement the present invention, further, the sizes of the cup body and the base are adapted to the size of the test sample.

[0008] A detection method for the weight and composition of a metal coating, the detection method comprising the following steps:

[0009] a. Prepare a test sample;

[0010] b. Clean and dry the sample;

[0011] c. Weigh the test sample and record the original weight W 1；

[0012] d. Insert the test specimen between the cup body and the base, and tighten the bolt to form a closed cup body;

[0013] e. Select reaction reagents according to the coating type and accelerate dissolution through an oscillator;

[0014] f. Collect the solution and remove the test sample piece, clean and blow dry the test sample;

[0015] g. Weigh the test sample piece and record W2, and analyze the solution composition.

[0016] To better implement the present invention, further, in step b, the cleaning solution is anhydrous ethanol.

[0017] To better implement the present invention, further, in step e, for galvanized products as the coating type, the reaction reagents are hexamethylenetetramine and sulfuric acid.

[0018] To better implement the present invention, further, in step e, for galvanized products as the coating type, the reaction reagents are sodium hydroxide and hydrochloric acid for stepwise reaction.

[0019] To better implement the present invention, further, in step e, the oscillation rate of the oscillator is 200 revolutions per minute.

[0020] To better implement the present invention, further, in step g, the composition analysis uses ICP or potassium dichromate titration method.

[0021] The beneficial effects of the present invention are: Through the device of the present invention, the coating can be accurately stripped from the sample, ensuring the accurate and stable weight and composition of the coating;

[0022] Timely detect the coating weight of products on the production line in the laboratory, and can sequentially detect the samples on the operation side, drive side, and middle of the production line, and calibrate and standardize the on-line coating scanner based on the laboratory coating data; Ensure the accuracy of the data measured by the on-line scanner and ensure that the coating weight of each single coil produced meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions of the present invention, the following will briefly introduce the drawings required in the present invention. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of the base in the present invention;

[0025] Figure 2 For Figure 1 the side view structural diagram;

[0026] Figure 3 is Figure 1 the attached view structural schematic diagram of

[0027] Figure 4 is the structural schematic diagram of the cup body in the present invention;

[0028] Figure 5 is Figure 4 the attached view structural schematic diagram of

[0029] Figure 6 is Figure 4 the side view structural schematic diagram of

[0030] Icon: 1. Base; 2. Cup body; 3. Bolt; 4. Sample top plate. Specific embodiments

[0031] Next, the technical solutions in the present invention will be described in conjunction with the drawings in the present invention.

[0032] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0033] Example 1 (the test sample is galvanized sheet):

[0034] Please refer to Figures 1-6 , Figure 1 which is a detection tool for the weight and composition of a metal coating provided by the present invention. The detection tool for the weight and composition of the metal coating includes a base 1 and a cup body 2. A card slot is provided at the top end of the base 1, and a card block is provided on the outer side of the bottom of the cup body 2. The card block is adapted to the card slot.

[0035] Furthermore, a bolt 3 is provided inside the base 1, and a sample top plate 4 is fixedly connected to the top end of the bolt 3. The sizes of the cup body 2 and the base 1 are adapted to the size of the test sample. The material of the base 1 is 304 stainless steel, and the material of the cup body 2 is glass silicone.

[0036] In this embodiment, a base 1 and a cup body 2 are provided for rapid sample detection. A clamping groove is provided at the top end of the base 1, and a clamping block is provided at the bottom of the cup body 2, which facilitates the quick snap-fit installation of the base 1 and the cup body 2. The test sample is inserted between the cup body 2 and the base 1, and then the bolt 3 is tightened upward. The top plate 4 presses the test sample upward against the bottom of the cup body 2. The cup body 2 is provided with openings at both the top and the bottom. The bottom opening facilitates the cooperation with the top plate 4 in the base 1. The bottom of the cup body 2 forms a closed cup body, which facilitates the plating layer of the test sample to be fully exposed at the bottom of the cup body 2, facilitating the addition of reagents to fully react with the metal plating layer of the test sample, and at the same time ensuring the stability of the test sample.

[0037] Among them, the sizes of the cup body 2 and the base 1 are adapted to the sizes of the test samples. In this embodiment, the test sample is selected as a circular sample with a diameter of 80 mm (or a square sample with a side length of 80 mm) taken from the original plate on the production line. The base body of the appliance base is 90 mm, the bolt is φ5 mm and the height is 62 mm. The diameter of the barrel groove cup body is φ70 mm and the height is 63 mm.

[0038] A method for detecting the weight and composition of a metal plating layer, the detection method comprising the following steps:

[0039] a. Prepare test samples;

[0040] b. Clean and dry the samples;

[0041] c. Weigh the test samples and record the original weight W 1；

[0042] d. Insert the test specimen between the cup body and the base, tighten the bolt to form a closed cup body;

[0043] e. Select a reaction reagent according to the type of plating layer and accelerate the dissolution through an oscillator;

[0044] f. Collect the solution and remove the test specimen, clean and dry the test sample;

[0045] g. Weigh the test specimen and record W2, and analyze the composition of the solution.

[0046] In this embodiment, a circular sample with a diameter of 80 mm is taken from the original plate on the production line. The sample is cleaned with anhydrous ethanol and dried with a hair dryer; the weight of the sample is weighed with a balance, and the original weight W1 = 15.32 g is recorded; the sample is inserted between the cup body 2 and the base 1, and the bolt 3 is tightened to form a closed cup body. The screw is tightened in the clockwise direction, and 1 ml of 5% hexamethylenetetramine and 20 ml of 5% sulfuric acid are added; the container is placed on a circular oscillator and shaken (200 revolutions per minute) until no bubbles emerge (about 5 minutes); the sample is removed, the two sides of the sample are cleaned with distilled water, the sample is cleaned with anhydrous ethanol and dried, and then the weight of the sample is weighed with a balance, and W2 = 14.85 g is recorded. The area of the sample is about 5026.55 mm 2 , and the unit coating weight can be calculated to be about 93.5 g / m through the difference between the two weighings and the test area 2 .

[0047] Through the device of the present invention, the coating can be accurately peeled off from the sample, ensuring the accurate and stable weight and composition of the coating.

[0048] In the laboratory, the coating weight of the products on the production line is detected every 8 hours. The samples on the operation side, the transmission side, and the middle of the production line can be detected in sequence, and the online coating scanner is calibrated and calibrated based on the coating data in the laboratory; ensuring the accuracy of the data measured by the online scanner and ensuring that the coating weight of each single coil produced meets the requirements.

[0049] Example 2 (the test sample is an aluminum-plated plate):

[0050] Please refer to Figures 1-6 , Figure 1 , which is a detection tool for the weight and composition of a metal coating provided by the present invention. The detection tool for the weight and composition of the metal coating includes a base 1 and a cup body 2. A card slot is provided at the top of the base 1, and a card block is provided on the outer side of the bottom of the cup body 2. The card block is adapted to the card slot.

[0051] Furthermore, a bolt 3 is provided inside the base 1. The top end of the bolt 3 is fixedly connected to a sample top plate 4. The sizes of the cup body 2 and the base 1 are adapted to the sizes of the test samples. The material of the base 1 is 304 stainless steel, and the material of the cup body 2 is glass silicone.

[0052] In this embodiment, a base 1 and a cup body 2 are provided for rapid sample detection. A card slot is provided at the top of the base 1, and a card block is provided at the bottom of the cup body 2, facilitating the quick snap-fit installation of the base 1 and the cup body 2. The test sample is inserted between the cup body 2 and the base 1, and then the bolt 3 is tightened upward. The top plate 4 presses the test sample upward against the bottom of the cup body 2. The cup body 2 is provided with openings at both the top and the bottom. The bottom opening facilitates cooperation with the top plate 4 in the base 1. The bottom of the cup body 2 forms a closed cup body, facilitating the full exposure of the plated layer of the test sample at the bottom of the cup body 2, facilitating the addition of reagents to fully react with the metal plated layer of the test sample, and ensuring the stability of the test sample at the same time.

[0053] Among them, the sizes of the cup body 2 and the base 1 are adapted to the size of the test sample. In this embodiment, a circular sample with a diameter of 80 mm (or a square sample with a side length of 80 mm) is selected from the original plate on the production line as the test sample. The base of the appliance base body is 90 mm, the bolt is φ5 mm and the height is 62 mm. The diameter of the barrel groove cup body is φ70 mm and the height is 63 mm.

[0054] A method for detecting the weight and composition of a metal coating, the detection method comprising the following steps:

[0055] a. Prepare a test sample;

[0056] b. Clean and dry the sample;

[0057] c. Weigh the test sample and record the original weight W 1；

[0058] d. Insert the test specimen between the cup body and the base, tighten the bolt to form a closed cup body;

[0059] e. Select a reaction reagent according to the coating type and accelerate dissolution through an oscillator;

[0060] f. Collect the solution and remove the test specimen, clean and dry the test sample;

[0061] g. Weigh the test specimen and record W2, and analyze the composition of the solution.

[0062] In this embodiment, a square sample with a side length of 80 mm is taken from the original plate on the production line. The sample is cleaned with absolute ethanol and dried with a hair dryer. The weight of the sample is measured with a balance, and the original weight W1 = 18.76 g is recorded. The sample is inserted between the cup body 2 and the base 1, and the bolt 3 is tightened to form a closed cup body. The screw is tightened in the clockwise direction, and 20 ml of hot 40% sodium hydroxide is added. The container is placed on a circular oscillator and shaken (200 revolutions per minute). After the reaction stops bubbling, it is poured out. Then, ml of 1:1 hydrochloric acid solution is added. After the reaction stops bubbling, it is poured out. The sample is removed, the two sides of the sample are washed with distilled water, the sample is washed with absolute ethanol and dried, and then the weight of the sample is measured with a balance, and W2 = 18.21 g is recorded. The unit coating weight can be calculated as 85.9 g / m through the difference between the two weighings and the test area. 2 。

[0063] Through the device of the present invention, the coating can be accurately peeled off from the sample, ensuring the accurate and stable weight and composition of the coating.

[0064] In the laboratory, the coating weight of the products on the production line is detected every 8 hours. The samples on the operation side, the drive side, and the middle of the production line can be detected in sequence, and the online coating scanner is calibrated and calibrated based on the coating data in the laboratory. This ensures the accuracy of the data measured by the online scanner and ensures that the coating weight of each single coil produced meets the requirements.

[0065] Example 3 (the test sample is a galvanized alloy product containing aluminum-zinc alloy):

[0066] Please refer to Figures 1-6 , Figure 1 which is a detection tool for the weight and composition of a metal coating provided by the present invention. The detection tool for the weight and composition of the metal coating includes a base 1 and a cup body 2. A card slot is provided at the top end of the base 1, and a card block is provided on the outer side of the bottom of the cup body 2. The card block is adapted to the card slot.

[0067] Furthermore, a bolt 3 is provided inside the base 1. The top end of the bolt 3 is fixedly connected to a sample top plate 4. The sizes of the cup body 2 and the base 1 are adapted to the sizes of the test samples. The material of the base 1 is 304 stainless steel, and the material of the cup body 2 is glass silicone.

[0068] In this embodiment, a base 1 and a cup body 2 are provided for rapid sample detection. A card slot is provided at the top of the base 1, and a card block is provided at the bottom of the cup body 2, facilitating the quick snap-fit installation of the base 1 and the cup body 2. The test sample is inserted between the cup body 2 and the base 1, and then the bolt 3 is tightened upward. The top plate 4 presses the test sample upward against the bottom of the cup body 2. The cup body 2 is provided with openings at both the top and the bottom. The bottom opening facilitates cooperation with the top plate 4 in the base 1. The bottom of the cup body 2 forms a closed cup body, facilitating the full exposure of the plated layer of the test sample at the bottom of the cup body 2, facilitating the addition of reagents to fully react with the metal plated layer of the test sample, and ensuring the stability of the test sample at the same time.

[0069] Among them, the sizes of the cup body 2 and the base 1 are adapted to the size of the test sample. In the embodiment, a circular sample with a diameter of 80 mm (or a square sample with a side length of 80 mm) is selected from the original plate on the production line as the test sample. The base of the appliance base body is 90 mm, the bolt is φ5 mm and the height is 62 mm. The diameter of the barrel groove cup body is φ70 mm and the height is 63 mm.

[0070] A method for detecting the weight and composition of a metal plating layer, the detection method comprising the following steps:

[0071] a. Prepare a test sample;

[0072] b. Clean and dry the sample;

[0073] c. Weigh the test sample and record the original weight W 1；

[0074] d. Insert the test specimen between the cup body and the base, tighten the bolt to form a closed cup body;

[0075] e. Select a reaction reagent according to the plating type and accelerate the dissolution through an oscillator;

[0076] f. Collect the solution and remove the test specimen, clean and dry the test sample;

[0077] g. Weigh the test specimen and record W2, and analyze the composition of the solution.

[0078] In this embodiment, a galvanized alloyed round piece (Zn-Al alloy coating) with a diameter of 80 mm is taken from the original plate on the production line. The sample piece is cleaned with anhydrous ethanol and dried with a hair dryer. The weight of the sample is measured with a balance, and the original weight W1 = 17.62 g is recorded. The sample is inserted between the cup body 2 and the base 1, and the fastening bolt 3 is tightened to form a closed cup body. The screw is tightened in the clockwise direction. First, 1 ml of 5% hexamethylenetetramine and 20 ml of 5% sulfuric acid are added. The container is placed on a circular oscillator and shaken (200 revolutions per minute) until no bubbles are generated. Then, 20 ml of hot 40% sodium hydroxide is added. The container is placed on a circular oscillator and shaken (200 revolutions per minute). After the reaction stops bubbling, it is poured out. Then, ml of 1:1 hydrochloric acid solution is added. After the reaction stops bubbling, it is poured out. The sample piece is removed, and both sides of the sample piece are cleaned with distilled water, then cleaned with anhydrous ethanol and dried. The weight of the sample piece is measured with a balance again, and W2 = 17.02 g is recorded. The unit coating weight can be calculated as 119.3 g / m through the difference between the two weighings and the test area. 2 By analyzing the dissolution solution by potassium dichromate titration method: the zinc content is 85.6%, the aluminum content is 13.1%, and other metals are 1.3%.

[0079] Through the device of the present invention, the coating can be accurately peeled off from the sample, ensuring the accurate and stable coating weight and composition.

[0080] In the laboratory, the coating weight of the products on the production line is detected every 8 hours. The samples on the operation side, drive side, and middle of the production line can be detected in sequence, and the online coating scanner is calibrated and aligned based on the coating data in the laboratory. This ensures the accuracy of the data measured by the online scanner and ensures that the coating weight of each single coil produced meets the requirements.

[0081] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A detection tool for the weight and composition of a metal coating, characterized in that, Comprising: A base (1) and a cup body (2), a clamping groove is provided at the top end of the base (1), and a clamping block is provided on the outer side of the bottom of the cup body (2), and the clamping block is adapted to the clamping groove.

2. The detection tool for the weight and composition of a metal coating according to claim 1, characterized in that: A bolt (3) is provided inside the base (1), and a sample top plate (4) is fixedly connected to the top end of the bolt (3).

3. A detection tool for the weight and composition of a metal coating according to claim 1, characterized in that: The sizes of the cup body (2) and the base (1) are adapted to the size of the test sample.

4. A detection tool for the weight and composition of a metal coating according to claim 1, characterized in that: The base (1) is made of 304 stainless steel, and the cup body (2) is made of glass silicone.

5. A method for detecting the weight and composition of a metal coating, characterized in that, Using the detection tool for the weight and composition of the metal coating according to any one of claims 1-4, the detection method comprises the following steps: a. Preparing a test sample; b. Cleaning and drying the sample; c. Weigh the test sample and record the original weight W 1； d. Inserting the test piece between the cup body and the base, and tightening the bolt to form a closed cup body; e. Selecting a reaction reagent according to the coating type and accelerating dissolution through an oscillator; f. Collecting the solution and removing the test piece, and cleaning and drying the test sample; g. Weighing the test piece and recording W2, and analyzing the composition of the solution.

6. A method for detecting the weight and composition of a metal coating according to claim 5, characterized in that: In step b, the cleaning solution is anhydrous ethanol.

7. A method for detecting the weight and composition of a metal coating according to claim 5, characterized in that: In step e, when the coating type is a galvanized product, the reaction reagent is hexamethylenetetramine and sulfuric acid.

8. A method for detecting the weight and composition of a metal coating according to claim 5, characterized in that: In step e, when the coating type is a galvanized product, the reaction reagent is sodium hydroxide and hydrochloric acid for stepwise reaction.

9. The detection method of the weight and composition of a metal coating according to claim 5, characterized in that: In step e, the oscillation rate of the oscillator is 200 revolutions per minute.

10. A method for detecting the weight and composition of a metal coating according to claim 5, characterized in that: In step g, the composition analysis is performed by ICP or potassium dichromate titration method.

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