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GB/T 28796-2021 English PDF (GB/T 28796-2012)

GB/T 28796-2021_English: PDF (GB/T28796-2021)
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GB/T 28796-2021English170 Add to Cart 0--9 seconds. Auto-delivery Craft crystal decoration Valid GB/T 28796-2021
GB/T 28796-2012English359 Add to Cart 3 days [Need to translate] Craft crystal decoration Obsolete GB/T 28796-2012


BASIC DATA
Standard ID GB/T 28796-2021 (GB/T28796-2021)
Description (Translated English) Craft crystal decoration
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y88
Classification of International Standard 97.195
Word Count Estimation 9,980
Date of Issue 2021-10-11
Date of Implementation 2022-05-01
Older Standard (superseded by this standard) GB/T 28796-2012
Quoted Standard GB/T 191; GB/T 7962.1; GB 28480
Drafting Organization Pujiang County Dongzhou Crystal Co., Ltd.
Administrative Organization National Daily Glass Standardization Technical Committee
Regulation (derived from) National Standard Announcement No. 12 of 2021
Proposing organization China National Light Industry Council
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration
Summary This standard specifies the terms and definitions, requirements, test methods, inspection rules, signs, packaging, transportation and storage of craft crystal jewelry. This standard applies to craft crystal jewelry (hereinafter referred to as jewelry) made with synthetic crystal, crystal glass and natural crystal as the main raw materials.

BASIC DATA
Standard ID GB/T 28796-2012 (GB/T28796-2012)
Description (Translated English) Craft crystal decoration
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y88
Classification of International Standard 97.195
Word Count Estimation 9,914
Quoted Standard GB/T 191; GB/T 7962.1; GB/T 7962.12; GB/T 16552; GB/T 16553; GB 28480
Drafting Organization Zhejiang Arts Crystal Jewelry Co.
Administrative Organization National Standardization Technical Committee daily glass
Regulation (derived from) National Standards Bulletin 2012 No. 28
Proposing organization China Light Industry Association
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 process of crystal jewelry terminology and definitions, product classification, requirements, test methods, inspection rules, marking, packaging, transport and storage. This standard applies to natural crystal, synthetic quartz


GB/T 28796-2021 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 97.195 CCS Y 88 Replacing GB/T 28796-2012 Craft crystal decoration 工艺水晶饰品 ISSUED ON: OCTOBER 11, 2021 IMPLEMENTED ON: MAY 01, 2022 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of Contents Foreword ... 3  1 Scope ... 5  2 Normative references ... 5  3 Terms and definitions... 5  4 Requirements ... 6  5 Test methods ... 7  6 Inspection rules ... 9  7 Marking, packaging, transportation, storage ... 10  Craft crystal decoration 1 Scope This Standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage for craft crystal decoration. This Standard applies to craft crystal decoration (hereinafter referred to as the decoration) that takes synthetic crystal, crystal glass and natural crystal as the main raw materials. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191, Packaging and storage marks GB/T 7962.1, Test methods of colourless optical glass - Part 1: Refractive index and coefficient of dispersion GB 28480, Adornment - Provision for limit of baneful elements 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 craft crystal decoration with synthetic crystal, crystal glass and natural crystal as the main raw materials, the artworks, handicrafts, decorations and daily necessities that are made by mechanical and manual processing and assembly such as thermoforming, cutting, grinding and polishing 3.2 synthetic quartz a crystalline material formed under artificial conditions with silica as the main raw material; its crystal structure is similar to that of natural crystal, the color is uniform, and the crystal defects are few 5.5.3 Weighing of specimen Weigh 0.5000g (accurate to 0.0001g) of specimen. The specimen weighing operation shall be as fast as possible to avoid moisture absorption of the specimen. 5.5.4 Digestion of specimen 5.5.4.1 Place the weighed specimen in a 35mL platinum crucible. Moisten with a little distilled water. Add 8mL of hydrofluoric acid and 5mL of sulfuric acid (1+1). Heat slowly in a fume hood to decompose until smoking. 5.5.4.2 Cool after the smoke disappears. Use distilled water to rinse the inner wall of the platinum crucible. Add 3mL of sulfuric acid (1+1). Then heat and smoke. 5.5.4.3 Cool to room temperature. Use distilled water to dissolve the residue. Transfer to a 50mL volumetric flask. Dilute to the scale. Shake well for later use. 5.5.5 Specimen measurement Use atomic absorption spectrophotometry (flame method) to determine. Use the direct comparison method to perform quantification. 5.6 Color stability Use a 40W UV lamp (wavelength 253.7nm) to irradiate at a distance of 20cm from the surface of the decoration. 6 Inspection rules 6.1 Exit-factory inspection 6.1.1 Batching Products of the same variety, type and level produced in each shift are grouped as a batch. 6.1.2 Sampling 10 samples are randomly selected from each batch. 5 pieces are for inspection samples, and 5 pieces are for preparation samples. If the total number of products in the batch is less than 10, full inspection will be conducted. 6.1.3 Inspection items Visual inspection items in appearance quality, dimensional tolerance, and assembly requirements. 6.1.4 Inspection methods Each batch of exit-factory inspection items must be accepted. If one item fails, the responsible department shall decide to scrap or re-inspect the batch after analyzing the specific failure situation. If the product resubmitted for inspection still fails to meet the requirements, the batch will be deemed rejected. 6.2 Type inspection 6.2.1 When designing a new product or improving the original product, when there is a major change in the production process, when there is a large difference between the exit-factory inspection and the last type inspection result, the type inspection shall be carried out. 6.2.2 Type inspection shall randomly select samples from mass-produced products according to the provisions of 6.1.2. Check item by item according to all items in Chapter 4. The test method shall be carried out in accordance with the provisions of Chapter 5. 6.2.3 During the type inspection, all inspection items shall be accepted. 6.2.4 Inspection item classification: a) Class A: Refractive index, transmittance, surface roughness, lead, cadmium; b) Class B: Dimensional tolerances, assembly requirements, color stability; c) Class C: Appearance quality (including overall appearance, engraved lines, bubble diameter, allowable number of visible bubbles, color uniformity). 6.3 Determination rules When all inspection items are accepted, the batch of products shall be accepted. If an item in Class A fails, the batch of products shall be rejected. When an item in Class B fails, if the re-inspection procedure passes the inspection, the batch of products shall be determined as rejected. If it is still fails, the product will be determined as rejected. If there are two or more failed items in Class C, the batch of products will be determined as rejected. 7 Marking, packaging, transportation, storage 7.1 Marking The product or the outer packing box shall have the product name, product standard number, raw material name, quality grade, inspection certificate, enterprise name and address, quantity, net weight and other signs. The symbols shown in the figure, that the product shall be handled with care, the product is fragile, the product shall be put upward and be moisture-proof, shall comply with the provisions of GB/T 191. ......


GB/T 28796-2012 ICS97.195 Y88 National Standards of People's Republic of China Process crystal jewelry Issued on. 2013-03-01 2012-11-05 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of Contents Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Category 2 5 Requirement 2 6 Test Method 3 7 Inspection Rule 4 8 signs, packaging, transportation and storage 5 Foreword This standard rule according to GB/T 1.1-2009 given draft. The standard proposed by China National Light Industry Council. This standard by the National Standardization Technical Committee household glass (SAC/TC377) centralized. This standard was drafted. Arts for Zhejiang Crystal Jewelry Co., Ltd. Jinhua Kang Teman Crystal Jewelry Co., Zhejiang Pujiang Shanghai Pudong Real Industry Co., Ltd. Zhejiang Pujiang day-long crystal gemstones, aquamarine Optical Materials Co., Ltd., Zhejiang, Zhejiang Pujiang crystal craft Audley Ltd., Hangzhou Iron-ying Crystal Technology Co., Ltd. Pujiang County Quality and Technical Supervision and Testing Center, Tsinghua University, Beijing University of Technology, Donghua the University. The main drafters of this standard. the cloud method, Chenwei Xiang, Wang Yuancheng, Qiupei Yu, Wang Xianting, Yuxuan Yao, Yao Zuyi, Dewey, Wang Jianzhong, Tianying Liang, Ning Wei. Process crystal jewelry 1 Scope This standard specifies the terms and definitions of crystal jewelry, product classifications, requirements, test methods, inspection rules, marking, packaging, transportation And storage. This standard applies to natural crystal, synthetic crystal, quartz glass and crystal glass as raw material in the process of crystal jewelry (hereinafter referred to as accessories). 2 Normative references The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 191 Packing Pictorial marking GB/T 7962.1 Colourless optical glass test methods - Part 1. refractive index and Abbe number GB/T 7962.12 Colourless optical glass test methods - Part 12. spectral transmittance GB/T 16552 jewelery name GB/T 16553 jade jewelry appraisal Jewelry GB 28480 provisions of harmful substances 3 Terms and Definitions GB/T 16552 and GB/T 16553 as defined in the following terms and definitions apply to this document. 3.1 Process crystal jewelry craftcrystaldecoration Natural crystal, synthetic crystal, quartz glass and crystal glass as raw materials, thermoforming, mechanical and manual processing and assembly made Artwork, handicrafts, ornaments, daily necessities. 3.2 Crystal glass crystalglass For the manufacture of advanced vessels, art and decoration of glass, it has a high transparency, good surface gloss, crystal clear, heat Molding, mechanical or manual processing, showed good photochromic properties. 3.3 Natural crystal rockcrystal At a certain temperature and pressure crystallized natural environment, the main ingredient is silica. Colorless transparent multi-color, purple, brown, Green and so on, mostly contain hairline crystals, bubbles, impurities and crystal turbidity, also known as quartz. 3.4 Synthetic crystal syntheticquartz Simulation of natural crystal in nature generate conditions to silica-generating reactor and other equipment in the crystal body, Natural crystal has the same crystal structure, its color is more uniform and less crystal defects. 3.5 Quartz glass fusequartz Glass, the silica content of the silica single component generally above 99.5%, divided into transparent and opaque quartz glass, comprising less ......

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