This standard specifies a method for testing the flaking resistance of enamel layers on aluminum and aluminum alloys in moisture exposure or weathering exposure by accelerated test. Because flaking is caused by poor adhesion between the enamel layer and the base metal, the flaking test is also a test for adhesion. The more severe the flaking in this test, the greater the possibility that the product will flak during use. GB/T 19354-2003 Aluminum enamel - Determination of adhesion of porcelain layer on aluminum under the action of electrolyte (flaking test) GB/T19354-2003 standard download decompression password: www.bzxz.net
This standard specifies a method for testing the flaking resistance of enamel layers on aluminum and aluminum alloys in moisture exposure or weathering exposure by accelerated test. Because flaking is caused by poor adhesion between the enamel layer and the base metal, the flaking test is also a test for adhesion. The more severe the flaking in this test, the greater the possibility that the product will flak during use.

GH/T 19354--2003
National Standards Department
Normative references
Terms and definitions
Test procedures
Result statements
Test report
GB/T19354—2003
This standard amends 1) 13805: 1S9 (F) Determination of the density of the initial layer of aluminum under the action of electrolyte (test test> English version).
This standard re-edits SO19805 according to the requirements of GT/1.1. This standard makes the following modifications to 15) 15505. The foreword of IS13805 was eliminated and the second paragraph was supplemented; "this standard" was used instead of "this international standard" for the convenience of use. Some Chinese standards that are not equivalent to international standards were adopted: This standard was proposed by the Shandong Machinery Industry Federation. This standard was drafted by the National Metallurgical and Non-metallic Surface Standards Committee: The drafting unit of this standard is the China Machinery Industry Surface Producing Supervision and Inspection Center. The main drafters of this standard are: Zhong Lichang, An Xinhua, Lai Ling, GH/T 19354—2003
International Standard Introduction
Peeling of the aluminum substrate is a defect caused by poor adhesion, resulting in the separation of the aluminum substrate from the aluminum substrate. Therefore, the peeling test is used to control the quality of the ceramic process, including the preparation of ceramic defects, the processing of the base metal before screening, coating and firing, and the selection of the base alloy material.
Determination of the adhesion of the aluminum substrate under the action of electrolyte
Determination of the adhesion of the aluminum substrate (peeling test) GB/T 19354—2003
This standard specifies an accelerated test to test the spalling resistance of aluminum and aluminum alloys in moisture exposure or gas exposure. Since spalling is caused by the lack of adhesion between the coating and the base metal, the spalling test is also the most dangerous test. The more serious the spalling process is in this test, the greater the possibility of the product falling off during use. 2 Normative References
The following documents are the clauses of this standard through reference. All For dated references, all subsequent static copies (excluding replacement copies) or revised versions are applicable to this standard. However, the parties who have reached an agreement on the approval of this standard should consider whether the latest versions of these documents should be used. For undated references, the latest version is applicable to this standard. GB/T12804 Laboratory Glass Instruments (neg1SO4788) GB/T13724.1 Laboratory Glassware (neq1SU3819) 150) 10141 Sugar Glass 3. Terms and definitions This standard uses the terms and definitions given in ISO 10141. 4. Temperature treatment The notched aluminum ceramic specimen is placed in a potassium dioxide (S) aqueous solution with a concentration of 108/L and placed in an ambient temperature of 1828°C for 20 hours. 5. Indications The test method specified in this standard for determining the density of ceramic layers on aluminum alloys shall be as follows: ：Test GB/T133:\
6.1 Balance.
6.2 Pan, single DUDmI. in accordance with GBT128C4, 6.3 Beaker, in accordance with GB/T15724.1 or period beaker or appropriate plastic piercer, 6.4 Plastic and end of the about or rack, used to fix the sample into the filter. 6.5 Artificial sea braid
6.7 Steel needle
*S[118 (the full number after the fall is\3) 1380., hereby corrected. GB/T19354—2003www.bzxz.net
? Reagents
7.1 Test solution
The test chamber is an industrial pure trichloride (S1Cl) aqueous solution with a liquid density of 1g: To prepare: 1. Dissolve 1K potassium trichloride (S1Cl) in water with ice or deionized water and stir continuously. Note: The deionization will form a hydrochloric acid system (SbCl) and dihydrogen sulfide (SbO) which will precipitate or form a white precipitate. The test solution will not form a precipitate quickly.
The trichloride is hygroscopic and should be stored in a dry closed container. Do not use damp or wet trichloride. Prepare fresh test acid for each test. 7.2 Cleaning Solution The cleaning solution shall be a distilled or deionized aqueous solution of sodium sulfonate containing at least 1% of the active ingredient. 8 Sample 8.1 Selection of a sample or sample may be a commercial product or a portion thereof, or a special sample prepared in accordance with ISO 184. 8.2 Preparation of the Sample for Test Prepare at least one cutout on the selected sample, with the angle between the cutout and the sample surface being approximately 90°. If necessary, trim the cutout using (6.6). The direction of the cutout should be from the porcelain layer to the base metal. Use the test solution (6.7). I The entire length of the printed edge is completely lubricated, and a ten-point indentation is made over the entire surface of the sample (5.7). The indentation also reaches the base metal. 8.3 Cleanliness The test specimen should be free of grease or other additives, which may increase the test results. To this end, immerse the specimen in a dripping solution (7.2) at a temperature of approximately 4°C for 10 min, remove it and rinse it with distilled water, then rinse it with distilled deionized water: 9 Test procedure The amount of test chamber liquid depends on the size of the specimen. At least 3 mL of liquid is required per square meter of area. Hang the specimen on a plastic absorbent rack (6.4) and fill it with the test solution (7 .1> in a suitable beaker or plastic container (G.3), set at 20°C at a fineness of 18~2%! Test acid solution (7.1) except for the sample connection, do not come into contact with any other mesh: 201. After the test, remove the sample from the test tube (7.1): rinse in water + and use a protective sponge (6.5) to remove loose particles, then immerse in air. 1 auxiliary result table
new sample 23) 1mm daily observation with a test bar. And describe the damage type in the test report as follows (see 11): \) any exposed area of ​​the base metal is visible around the base metal, the location of this area is The distance from the edge of the specimen or the wave is less than 3mm, and the length is less than 1mm. There is no scratch area on the surface of the specimen, and the area is greater than 1mm. The number of scratches on the surface of the specimen is not less than 1mm. Even if the individual scratches are smaller than the hole, they are not included. 11. The test report should include the following information: Type of specimen: For the test of this standard, it is marked as "test GB/T19354", and the type of specimen is described in accordance with the provisions of Chapter 10. GB/T19354--2003
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