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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 38265.3-2022: Test methods for soft soldering fluxes - Part 3: Determination of acid value - Potentiometric and visual titration methods Status: Valid
Basic dataStandard ID: GB/T 38265.3-2022 (GB/T38265.3-2022)Description (Translated English): Test methods for soft soldering fluxes - Part 3: Determination of acid value - Potentiometric and visual titration methods Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J33 Classification of International Standard: 25.160.50 Word Count Estimation: 15,116 Date of Issue: 2022-10-12 Date of Implementation: 2022-10-12 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 38265.3-2022: Test methods for soft soldering fluxes - Part 3: Determination of acid value - Potentiometric and visual titration methods---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Test methods for soft soldering fluxes - Part 3.Determination of acid value - Potentiometric and visual titration methods ICS 25.160.50 CCSJ33 National Standards of People's Republic of China Soldering Flux Test Methods Part 3.Determination of Acid Value Potentiometric titration and visual titration (ISO 9455-3.2019, Softsolderingfluxes-Testmethods- Released on 2022-10-12 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Principle 2 5 Reagent 2 6 Instruments and equipment 2 7 Test Step 3 8 Experimental data processing 3 9 Precision 4 10 Test report 5 Appendix A (Informative) Comparison between this document and ISO 9455-3.2019 structure number 6 Reference 7forewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document is part 3 of GB/T 38265 "Test Methods for Soldering Flux". GB/T 38265 has released the following parts. --- Part 1.Gravimetric method for the determination of non-volatile matter content; --- Part 2.Determination of non-volatile matter content boiling point method; --- Part 3.Determination of acid value Potentiometric titration and visual titration; --- Part 5.Copper mirror test; --- Part 6.Determination of content of halides (excluding fluorides); --- Part 8.Determination of zinc content; --- Part 9.Determination of ammonia content; --- Part 10.Solder wetting performance spreading test method; --- Part 11.Solubility of flux residues; --- Part 13.Determination of flux splashing; --- Part 14.Evaluation of the adhesiveness of flux residues; --- Part 15.Copper corrosion test; --- Part 16.Solder wetting performance Wetting balance method; --- Part 17.Flux residue surface insulation resistance test and electrochemical migration test. This document is modified to adopt ISO 9455-3.2019 "Test methods for soldering flux - Part 3.Determination of acid value by potentiometric titration and purpose Visual Titration". Compared with ISO 9455-3.2019, this document has more structural adjustments. Comparison overview of structure number changes between two files See Appendix A for the table. The technical differences between this document and ISO 9455-3.2019 and their reasons are as follows. --- Increase the reference to GB/T 684 (see 5.1) to adapt to the technical conditions of our country and increase operability; --- Increase the reference to HG/T 2892 (see 5.2) to adapt to the technical conditions of our country and increase operability; --- Increase the reference to GB/T 678 (see 5.3) to adapt to the technical conditions of our country and increase operability; ---Changed the calibration method of potassium hydroxide ethanol solution (see 5.5) to increase operability and facilitate the application of this document; --- Changed the preparation method of phenolphthalein indicator solution (see 5.6) to adapt to the technical conditions of our country; --- Added "laboratory analytical balance" instrument (see 6.1) to facilitate the application of this document. ---Changed the solution used to titrate the solder solution in method A, and the corresponding solder sample mass (see 7.1.2, 7.2.1.2), add Increase operability and facilitate the application of this document; --- Added references to GB/T 38265.1 and GB/T 38265.2 (see 8.1) to adapt to my country's technical conditions and increase operability; ---Changed the calculation formula (see Chapter 8) to improve the accuracy of the calculation and facilitate the application of this document; --- Increase the reference to GB/T 6379 (all parts) (see 9.1, 9.2) to adapt to my country's technical conditions and increase operability. The following editorial changes have been made to this document. --- In order to coordinate with the existing standard, the name of the standard is changed to "Test method for soldering flux - Part 3.Determination of acid value by potentiometric titration method and visual titration"; --- Replaced ISO 9454-1 with the informative referenced GB/T 15829 (see Chapter 1). Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Welding Standardization Technical Committee (SAC/TC55). This document is drafted by. Zhejiang Yatong Welding Materials Co., Ltd., Harbin Welding Research Institute Co., Ltd., Suzhou Keshida Electronic Materials Co., Ltd. Company, Yichengda Technology (Jiangxi) Co., Ltd., Harbin Institute of Technology, Shenzhen Weite New Materials Co., Ltd., Yunnan Tin Industry Tin Materials Co., Ltd., Shaoxing Tianlong Tin Material Co., Ltd., Heilongjiang University of Science and Technology. The main drafters of this document. Gong Xiaobin, Chen Yongsheng, Li Chunfang, Xu Jinhua, He Peng, Li Weijun, Lu Hongbo, Li Zhenhua, Yang Haoquan, Lu Xiaochun, Sun Xiaomei.IntroductionAs the key supporting combination material in the soldering process, soldering agent has a decisive influence on the quality of soldered joints. The strong foundation project being implemented, the national science and technology major project "core electronic devices, high-end general-purpose chips and basic software products" and "ultra-large-scale Technology research and development of core electronic devices, high-end chips and integrated circuit complete sets of technology in the Special Project of Modular Integrated Circuit Manufacturing Equipment and Complete Processes Among them, solder is the key basic material, and the formulation of test method standards for its quality performance evaluation is of great significance. Since.2001, my country has promulgated and implemented GB/T 3131 "Sn-Lead Solder", GB/T 20422 "Lead-Free Solder", GB/T 15829 "Classification and Performance Requirements of Solder Fluxes" and GB/T 28770 "Test Methods for Solder Materials" and other supporting standards, solder As an important component of solder, solder not only has an important impact on the solderability and manufacturability of solder, but also affects the environment, the reliability of solder joints and And application is also very important. GB/T 38265 "Test Methods for Soldering Fluxes" is the general test method standard for soldering fluxes. It is proposed to be composed of the following parts constitute. --- Part 1.Gravimetric method for the determination of non-volatile matter content; --- Part 2.Determination of non-volatile matter content boiling point method; --- Part 3.Determination of acid value Potentiometric titration and visual titration; --- Part 5.Copper mirror test; --- Part 6.Determination of content of halides (excluding fluorides); --- Part 8.Determination of zinc content; --- Part 9.Determination of ammonia content; --- Part 10.Solder wetting performance spreading test method; --- Part 11.Solubility of flux residues; --- Part 13.Determination of flux splashing; --- Part 14.Evaluation of the adhesiveness of flux residues; --- Part 15.Copper corrosion test; --- Part 16.Solder wetting performance Wetting balance method; --- Part 17.Flux residue surface insulation resistance test and electrochemical migration test. This document uses potentiometric titration and visual titration to determine the acid value of solder. This method has the advantages of simple operation, strong applicability, and accurate results. With the advantages of reliability and reliability, it has become an important detection method in soldering flux products. --- Part 1.Gravimetric method for the determination of non-volatile matter content. The purpose is to specify the use of gravimetric method to determine the non-volatile Test method for substance content. --- Part 2.Determination of non-volatile matter content Boiling point method. The purpose is to stipulate the determination of the non-volatile oil in solder by the boiling point method. Test method for substance content. --- Part 3.Determination of acid value potentiometric titration and visual titration. The purpose is to specify the use of potentiometric titration and visual titration Standard test method for the determination of acid value in solder. --- Part 5.Copper mirror test. The purpose of this specification is to specify a test method for evaluating the aggressiveness of solder to copper by means of the copper mirror test. --- Part 6.Determination of halide (excluding fluoride) content. The purpose is to specify the use of three quantitative methods for the determination of solder flux Ionic Halide Content and a Qualitative Method Test Method for the Presence of Ionic Halides in Solder Fluxes. --- Part 8.Determination of zinc content. The purpose is to specify the test for the determination of zinc content in soldering flux by EDTA titration method method. --- Part 9.Determination of ammonia content. The purpose of this document is to specify a test method for the determination of ammonia content in solder fluxes by distillation. --- Part 10.Solder wetting performance spreading test method. The purpose is to specify the use of spreading method to evaluate the wetting performance of solder test method. --- Part 11.Solubility of flux residues. The purpose is to specify a qualitative method for the evaluation of solder residues in selected solvents Solubility test method. --- Part 13.Determination of flux splashing. Its purpose is to specify a test method for evaluating the spattering properties of solder fluxes on steel test pieces. --- Part 14.Evaluation of the adhesiveness of flux residues. The purpose is to specify the use of chalk powder for the evaluation of residues after soldering after soldering. Adhesive test method. --- Part 15.Copper corrosion test. The purpose is to specify the qualitative evaluation of the surface of copper plates using the copper corrosion test under controlled environmental conditions. Test method for corrosivity of solder residues. --- Part 16.Solder wetting properties Wetting balance method. The purpose is to specify the use of wetting balance method to evaluate the wettability of solder capable test method. --- Part 17.Flux residue surface insulation resistance comb test and electrochemical migration test. The purpose is to specify the use of surface Insulation resistance comb test and electrochemical migration test to evaluate the corrosion of flux residues on the surface of the test piece after soldering method. Soldering Flux Test Methods Part 3.Determination of Acid Value Potentiometric titration and visual titration1 ScopeThis document specifies the determination methods for the acid value of solder --- potentiometric titration and visual titration, including principles, reagents, instruments and equipment, test methods Test steps, test data processing, precision, test report, etc. This document applies to Type 1 and Type 2 solder fluxes defined in GB/T 15829.2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 678 Chemical Reagent Ethanol (Dehydrated Ethanol) (GB/T 678-2002, ISO 6353-2.1983, NEQ) GB/T 684 chemical reagent toluene (GB/T 684-1999, ISO 6353-2.1983, NEQ) GB/T 6379 (all parts) Accuracy (trueness and precision) of measurement methods and results [ISO 5725 (all parts), IDT] Note. GB/T 6379.1-2004 Accuracy of measurement methods and results (trueness and precision) Part 1.General principles and definitions (ISO 5725-1.1994, IDT); GB/T 6379.2-2004 Accuracy of measurement methods and results (trueness and precision) Part 2.Determining the repeatability and repeatability of standard measurement methods The basic method of presentability (ISO 5725-2.1994, IDT); GB/T 6379.3-2004 Accuracy of measurement methods and results (trueness and precision) Part 3.Intermediate degree of precision of standard measurement methods Quantity (ISO 5725-3.1994, IDT); GB/T 6379.4-2006 Accuracy of measurement methods and results (trueness and precision) Part 4.Basis for determining the accuracy of standard measurement methods This method (ISO 5725-4.1994, IDT); GB/T 6379.5-2006 Accuracy of measurement methods and results (trueness and precision) Part 5.The reliability of determining the precision of standard measurement methods alternative method (ISO 5725-5.1998, IDT); GB/T 6379.6-2004 Accuracy of measurement methods and results (trueness and precision) Part 6.Practical application of accuracy values (ISO 5725-6.1994, IDT). GB/T 38265.1 Test methods for solder fluxes Part 1.Gravimetric method for the determination of non-volatile matter content (GB/T 38265.1- 2019, ISO 9455-1.1990, MOD) GB/T 38265.2 Soldering Flux Test Methods Part 2.Determination of Non-volatile Matter Content by Boiling Point Method (GB/T 38265.2- 2019, ISO 9455-2.1993, MOD) HG/T 2892 Chemical Reagent Isopropanol (HG/T 2892-2020, ISO 6353-3.1987, NEQ)3 Terms and DefinitionsThis document does not have terms and definitions that need to be defined. ...... |
