GB/T 3532-2022 English PDF (GBT3532-2022)

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GB/T 3532-2022: Domestic porcelain ware
GB/T 3532-2022
Domestic porcelain ware
ICS 81.060.20
CCSY24
National Standards of People's Republic of China
Replacing GB/T 3532-2009
Daily Porcelain
Published on 2022-04-15
2022-11-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
Daily Porcelain
1 Scope
This document specifies the product classification, technical requirements, test methods, inspection rules and signs, packaging, transportation and storage of daily-use porcelain.
This document is applicable to daily fine porcelain, common porcelain and stoneware products.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 2828.1-2012 Counting Sampling Inspection Procedures Part 1.Lot-by-Lot Inspection Sampling Retrieved by Acceptance Quality Limit (AQL)
plan
GB/T 2829-2002 Periodic Inspection Counting Sampling Procedure and Table (Applicable to Inspection of Process Stability)
GB/T 3295 Test method for 45° mirror gloss of ceramic products
GB/T 3298 Determination method of thermal shock resistance of daily-use ceramics
GB/T 3299 Determination method of water absorption of daily-use ceramics
GB/T 3300 Deformation inspection method of daily-use ceramics
GB/T 3301 Determination method of volume, diameter error, height error, weight error and defect size of ceramics for daily use
GB/T 3302 Rules for Packaging, Marking, Transportation and Storage of Ceramics for Daily Use
GB/T 3303 Defect Terms of Household Ceramics
GB/T 5000 Terminology of Ceramics for Daily Use
GB/T 27587 Test method for microwave heating resistance of household ceramics
GB/T 32680 Test method for resistance to mechanical washing of ceramics for daily use
GB/T 34253 Test method for adaptability of daily-use ceramics from refrigerators to microwave ovens and ovens
QB/T 1503 Determination method of whiteness of ceramics for daily use
3 Terms and Definitions
Terms and definitions defined in GB/T 5000 and GB/T 3303 apply to this document.
4 product categories
4.1 According to the use of the product, it is divided into dishes, bowls, cups, pots and other utensils.
4.2 According to the specifications of the product, it is divided into small, medium, large and special. The size range of each type is shown in Table 1.
4.3 According to the water absorption rate of the product, it is divided into fine porcelain, common porcelain and stoneware porcelain.
5 Technical requirements
5.1 Water absorption
Fine porcelain products should not exceed 0.5%, common porcelain products should not exceed 1.0%, and stoneware products should not exceed 5.0%.
5.2 Thermal shock resistance
Small and medium-sized products should not crack once heat exchanged at 180℃ to 20℃; large and special products should not crack once heat exchanged at 160℃ to 20℃.
5.3 Whiteness, gloss and color difference
Should meet the requirements of Table 2.
5.4 Microwave adaptability
The heating energy is 72000J. After the test according to 6.4, there should be no cracks, no damage and no arc generation.
5.5 Refrigerator to Microwave Adaptability
After the test according to 6.5, there shall be no cracking, no damage and no arcing.
5.6 Refrigerator to Oven Adaptability
There shall be no cracking and no damage after the test in accordance with 6.6.
5.7 Resistance to mechanical washing
The mean obtained by all observers should not be greater than 1.
5.8 Product specification error
5.8.1 Diameter error
The error of the diameter greater than.200mm should be within ±1.0%, and the error of the diameter of 60mm~200mm should be within ±1.5%.
The error of diameter less than 60mm should be within ±2.0%.
5.8.2 Altitude error
The error of height greater than 100mm should be within ±2.0%, and the error of height between 30mm and 100mm should be within ±2.5%.
The error of the degree less than 30mm should be within ±3.0%.
5.8.3 Quality error
Small and medium-sized products should be within ±6.0%, and large and special-sized products should be within ±4.0%.
5.9 Appearance quality
5.9.1 The product should not have glaze frying, bumping, cracking and leakage defects.
5.9.2 The glaze color and the color of the flower surface of the complete set of products shall be basically the same, except for special designs. The bottom edge of the product should be smooth, and it should be flat on a flat surface.
stable. The lid of the covered product basically matches the mouth. When the pot product is inclined to the angle of 70° between the bottom surface and the horizontal position, the lid should not fall off. when cover
When one side moves, the gap between the lid and the spout should not exceed 3mm. The mouth of the spout should not be lower than 3mm from the spout.
5.9.3 The appearance defects of each grade of the product shall comply with the provisions in Table 3, and there shall not be more than 2 defects within 10mm2 and shall comply with the
Meet the following requirements.
a) Superior products should not have more than 2 defects per product;
b) First-class products should not exceed 4 defects per product;
c) Qualified products should not exceed 6 defects per product.
6 Test methods
6.1 Determination of water absorption
Execute according to GB/T 3299.
6.2 Determination of thermal shock resistance
Execute according to GB/T 3298.
6.3 Determination of whiteness, gloss and color difference
Whiteness and color difference are implemented in accordance with QB/T 1503, and gloss is implemented in accordance with GB/T 3295.
6.4 Determination of suitability for microwave ovens
Execute according to GB/T 27587.
6.5 Determination of Refrigerator to Microwave Suitability
Execute according to GB/T 34253.
6.6 Determination of Refrigerator to Oven Suitability
Execute according to GB/T 34253.
6.7 Determination of resistance to mechanical washing
Execute according to GB/T 32680.
6.8 Determination of product specification error
Execute according to GB/T 3301.
6.9 Determination of appearance quality
Deformation is performed according to GB/T 3300, and defect size is performed according to GB/T 3301.
7 Inspection rules
7.1 Inspection classification
Product inspection is divided into factory inspection and type inspection, and the number of unqualified products per 100 units (piece counting method) is used for inspection.
7.2 Factory inspection
7.2.1 The factory inspection items are those specified in 5.8 and 5.9.
7.2.2 The factory inspection shall be carried out in accordance with the provisions of GB/T 2828.1-2012.Unqualified classification of each inspection item, acceptance quality limit, inspection
The test level and sampling plan are shown in Table 4.One sampling and judgment of normal inspection shall be carried out according to Table 5.