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GB/T 3532-2009 English PDF (GBT3532-2009)

GB/T 3532-2009 English PDF (GBT3532-2009)

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GB/T 3532-2009: Domestic porcelain ware

This Standard specifies to the product classification, technical requirements, test methods, inspection rules and the rules for marking, packaging, transportation and storage of domestic porcelain ware. This Standard applies to the products of domestic porcelain ware, ordinary porcelain ware and stoneware. This Standard does not apply to the products for which there are other national standards or industrial standards.
GB/T 3532-2009
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 81.060.20
Y 24
Replacing GB/T 3532-1995
Domestic Porcelain Ware
ISSUED ON. FEBRUARY 17, 2009
IMPLEMENTED ON. JULY 1, 2009
Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Application Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Product Classification ... 5
5 Technical Requirements ... 6
6 Test Methods ... 14
7 Inspection Rules ... 16
8 Marking, Packaging, Transportation and Storage ... 19
Foreword
This Standard replaces GB/T 3532-1995, Domestic Porcelain Ware.
Compared with GB/T 3532-1995, the main changes of this Standard are as follows. -- it adds large and super sizes for cups in product classification;
-- it modifies the technical requirements for water absorption of stoneware products; -- it adds the technical requirements and test methods for adaptability to microwave oven, adaptability from refrigerator to microwave oven and adaptability from refrigerator to baking oven;
-- it modifies the requirements for some appearance defects;
-- it modifies the sampling method in inspection rules.
This Standard was proposed by China National Light Industry Council.
This Standard shall be under the jurisdiction of China National Ceramics Standardization Center.
The main drafting organization of this Standard. Ceramic Research Institute of Light Industry of China.
The contributory drafting organizations of this Standard. Jiangsu Gaochun Ceramics Co., Ltd., Guangxi Sanhuan Enterprise Group Co., Ltd., Fujian Guanfu Modern Houseware Co., Ltd., Guangdong Sitong Group Co., Ltd., Guangdong Songfa Ceramics Co., Ltd., Guangdong Lianjian Hongxing Ceramics Enterprise Group Co., Ltd. and Guangdong Xiongying Group Co., Ltd.
The main drafters of this Standard. Cheng Guoan, Zhang Kan, Kong Deshuang, Yi Yuan, Liang Tingshi, Cai Zhencheng, Lin Daofan, Shi Yongyi and Wu Yanjiao. The editions of the standard replaced by this Standard are as follows.
-- GB/T 3532-1983, GB/T 3532-1995.
Domestic Porcelain Ware
1 Application Scope
This Standard specifies to the product classification, technical requirements, test methods, inspection rules and the rules for marking, packaging, transportation and storage of domestic porcelain ware.
This Standard applies to the products of domestic porcelain ware, ordinary porcelain ware and stoneware.
This Standard does not apply to the products for which there are other national standards or industrial standards.
2 Normative References
The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies.
GB/T 2828.1-2003, Sampling Procedures for Inspection by Attributes ?€? Part 1. Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection (ISO 2859-1.1999, IDT)
GB/T 2829-2002, Sampling Procedures and Tables for Periodic Inspection by Attributes (Apply to Inspection of Process Stability)
GB/T 3295, Standard Test Method for 45?? Specular Gloss of Ceramic Ware
GB/T 3298, Standard Test Method for Crazing Resistance of Domestic Ceramic Ware by a Thermal Shock Method
GB/T 3299, Test Method for Water Absorption of Domestic Ceramicware
GB/T 3300, Standard Test Method for Deformation Measurement of Domestic Ceramic Ware
GB/T 3301, Standard Method for Measurement of Volume, Rim Diameter Allowance, Height Allowance, Weight Allowance and Size of Defects of Domestic Ceramic Ware
GB/T 3302, Rules of Package, Mark, Transport and Reserve for Domestic Ceramic When products are indicated with microwave oven adaptability, they shall not crack after one cycle or generate electric arc in accordance with the test method specified in 6.7.
5.7 Adaptability from refrigerator to baking oven
When products are indicated with baking oven adaptability, they shall not crack after one cycle in accordance with the test method specified in 6.8.
5.8 Product specification allowance
5.8.1 Rim diameter allowance
The allowance for rim diameter greater than 200 mm is ?? 1.0%; the allowance for rim diameter of 60 mm ~ 200 mm is ?? 1.5%; the allowance of rim diameter less than 60 mm is ?? 2.0%.
5.8.2 Height allowance
The allowance for height is ?? 3.0%.
5.8.3 Quality allowance
The allowance for quality is ?? 6.0%.
5.9 Appearance quality
5.9.1 Products shall be free from the defects including crack, chip, split and leakage. 5.9.2 The glaze colour and face glossiness of complete set of products shall be substantially identical.
5.9.3 The bottom rim of products shall be polished; they shall be stable when they are placed on a plane.
5.9.4 The lid and mouth of lidded products shall be substantially matched well; when pots are tilted by 70??, the lid shall not fall off. When the lid moves to one side, the distance from the lid to mouth shall not exceed 3 mm. The tip of spout of pots shall not be 3 mm lower than the pot mouth.
5.9.5 The marking on the bottom shall be correct and clear; it shall not be conspicuously deflective or eccentric.
5.9.6 The appearance defects of products of all grades shall be as specified in Table 3 and shall conform to the following requirements.
a) not more than 2 defects for each super-grade product;
b) not more than 4 defects for each first-grade product;
6.7.1.1 One microwave oven with a microwave output power not less than 600 W. 6.7.1.2 One refrigerator which is capable of controlling the temperature difference within the working area within ?? 3??C.
6.7.2 Determination
Immerse samples in water at temperature (20 ?? 3)??C for 1 h; take out and use cloth to wipe them dry. Place a sponge soaked in water with a size of one half of the bottom place of samples [having identical shape to the bottom of samples and thickness not less than 15 mm] on samples; immediately place into a cabinet freezer at -8??C; preserve temperature for 16 h after the temperature is achieved; place samples, within 45 s after taking out, in the middle of microwave oven turntable for microwave heating [one container containing (125 ?? 2.5) mL of water is placed at two corners of the microwave oven, which shall not touch the turntable], with heating energy 72 000 J and heating-up duration obtained by dividing energy by power, accurate to second; place into a cabinet freezer at -8??C within 45 s after heating; preserve temperature for 16 h after the temperature is achieved; take out samples to cool down to room temperature and check whether samples crack. If an electric arc is generated during the test process, immediately terminate the test and state the reason in the report for the termination of the test is that an electric arc is generated.
6.8 Adaptability from refrigerator to baking oven
6.8.1 Apparatus
6.8.1.1 One heating furnace which is capable of controlling the temperature difference within the working area within ?? 5??C and has a sufficient rate of temperature increase to ensure that temperature rises to the testing temperature within 15 min after placing samples.
6.8.1.2 One refrigerator which is capable of controlling the temperature difference within the working area within ?? 3??C.
6.8.2 Determination
Immerse samples in water at temperature (20 ?? 3)??C for 1 h; take out and use cloth to wipe them dry. Place a sponge soaked in water, with a size of one half of the bottom plane of samples [having identical shape to the bottom of samples and thickness not less than 15 mm], on samples; immediately place into a cabinet freezer at -8??C; preserve temperature for 16 h after the temperature is achieved; place into a furnace at 200??C within 45 s after taking out samples; preserve temperature for 20 min after the temperature is achieved; take out samples after heating, place them on a material with poor heat conduction performance to cool down to room temperature and check whether samples crack.
6.9 Deformation determination
The test method for deformation shall be as specified in GB/T 3300.
6.10 Determination of product specification errors and defect dimensions The test method for product specification errors and defect dimensions shall be as specified in GB/T 3301.
7 Inspection Rules
7.1 Inspection classification
Product inspection is classified into delivery inspection and type inspection; the inspection results are the numbers of rejects per 100 units (the unit method). 7.2 Delivery inspection
7.2.1 Each product shall be by the inspection department of the manufacturer and can only be delivered when it passes the inspection.
7.2.2 The items of delivery inspect...

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