GB/T 11419-2008 English PDFUS$134.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 11419-2008: Vitreous and porcelain enamels -- Enamelled cooking utensils -- Determination of resistance to thermal shock Status: Valid GB/T 11419: Historical versions
Basic dataStandard ID: GB/T 11419-2008 (GB/T11419-2008)Description (Translated English): Vitreous and porcelain enamels -- Enamelled cooking utensils -- Determination of resistance to thermal shock Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Y26 Classification of International Standard: 25.220.50; 97.040.60 Word Count Estimation: 7,790 Date of Issue: 2008-12-23 Date of Implementation: 2009-06-01 Older Standard (superseded by this standard): GB/T 11419-1989 Adopted Standard: ISO 2747-1998, IDT Regulation (derived from): National Standard Approval Announcement 2008 No.21 (Total No.134) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the method for measuring temperature enamel cookware acute degeneration. Determination of enamel cookware performance under conditions of sudden temperature changes through continuous thermal shock test. GB/T 11419-2008: Vitreous and porcelain enamels -- Enamelled cooking utensils -- Determination of resistance to thermal shock---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. Vitreous and porcelain enamels. Enamelled cooking utensils. Determination of resistance to thermal shock ICS 25.220.50; 97.040.60 Y26 National Standards of People's Republic of China GB/T 11419-2008/ISO 2747.1998 Replacing GB/T 11419-1989 Enamel cookware denaturation temperature measurement method ME (ISO 2747.1998, IDT) Posted 2008-12-23 2009-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard is identical with ISO 2747.1998 "Determination of enamel cookware temperature acute degeneration" (in English). For ease of use, this standard made the following editorial changes. --- "This International Standard" be replaced by "this standard"; --- Remove the preface to international standards, increasing our standard foreword. This standard replaces GB/T 11419-1989 "urgent enamel temperature variability testing methods." The main changes compared to the present standard and GB/T 11419-1989 "urgent enamel temperature variability testing methods" as follows. --- Standard name changed to "urgent determination of enamel cookware temperature variability," consistent with ISO 2747. --- Increasing the definition of how to determine the damage to the enamel. --- The test procedure is described in more reasonable. --- Added Appendix A. Appendix A of this standard is an informative annex. The standard proposed by China Machinery Industry Federation. This standard by the National Standardization Technical Committee enamel coating layer metal and nonmetal Technical Committee (SAC/TC57/SC3) Centralized. This standard was drafted. Donghua University, the National Optical glass enamels Quality Supervision and Inspection Center. The main drafters. Zhang , Sang Yi, Jiang Weizhong. This standard replaces the previous standard published case. --- GB/T 11419-1989. GB/T 11419-2008/ISO 2747.1998 Enamel cookware denaturation temperature measurement method ME1 ScopeThis standard specifies the method for determination of enamel cooking temperature anxious degeneration. Through successive thermal shock test measures the temperature suddenly changed in enamel cookware Performance Condition.2 Terms and definitionsThe following terms and definitions apply to this standard. 2.1 Samples from the internal heating cold water injected into the start of the next stage of reheating the sample to the desired temperature thermal shock test series ended operating. 2.2 Quenched with cold water before the sample is heated to a temperature. 2.3 The difference between the first temperature and the thermal shock damage to the water temperature of the sample appears in quenched with cold water or reheating. 2.4 Under normal viewing conditions, from the specimen 250mm, porcelain enamel porcelain surface visible peeling or cracking; or visible colored liquid infiltrated ceramic layer. Principle 3 By the increasing temperature of 20 ℃ series of tests consisting of a single thermal shock, thermal shock test each time a sample is heated from the outside, and then with 20 ℃ water Poured into the interior of the sample quenched. The first test of the thermal shock temperature of 200 ℃. End of the test the first occurrence of visible damage.4 Instrument4.1 hotplates Electric oven temperature should be able to control the entire process, the diameter and maximum output power shall comply with the requirements in Table 1. Table 1 The inner diameter of the sample/mm Furnaces Diameter/mm Maximum output power/W ≤180 145 1000 ± 100 > 180 ~ ≤220 180 1500 ± 150 > 220 220 2000 ± 200 To overcome the uneven bottom of the sample, should be covered with a fill size of 0.100mm ~ 0.125mm copper particles on the ring electric stove. 4.2 Temperature measuring device It can quickly display an accuracy of 2 ℃. 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