QB/T 1734-1993 Gold foil

This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements of gold foil. This standard is applicable to gold foil used for gilding ancient buildings, modern high-end buildings and Buddha statues, and is also applicable to gold foil used for gold coating of precious Chinese patent medicines, the formula of high-end inkstones and inkstones, and the decoration and filling of high-end furniture and handicrafts. QB/T 1734-1993 Gold Foil QB/T1734-1993 Standard Download Decompression Password: www.bzxz.net

Light Industry Standard of the People's Republic of China
1 Subject Content and Scope of Application
QB/T1734-1993
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements of gold foil. This standard applies to gold foil used for gilding ancient buildings, modern high-end buildings and Buddha statues, and also applies to gold foil used for gold coating of precious Chinese patent medicines, formulas of high-end inkstones and inkstones, and decoration and furnishing of high-end furniture and handicrafts. 2 Reference standards
GB/T2829 Periodic inspection counting sampling procedures and sampling tables (applicable to the inspection of production process stability)GB/T9288 Analysis method for gold content in jewelryQB/T1133 Determination method for thickness of gold covering layer in jewelryChemical methodQB/T1135 Determination method for thickness of gold and silver covering layer in jewelryX-ray fluorescence spectrometryWww.bzxZ.net
3 Product classification
3.1 Gold foil is classified into 98 gold foil, 77 gold foil, and 74 gold foil according to its gold content. 3.2 Product specifications (length × width): 93.3mm×93.3mm, 83.3mm×83.3mm, 44.5mm×44.5mm. 3.3 Special varieties are subject to the requirements of the order contract.
4 Technical requirements
4.1 Product appearance
Products in the same batch shall have no obvious color difference, neat edges and corners, and no obvious damage; there shall be no more than one 1mm2 sand hole in each 20cm2 foil. 4.2 The gold content of the product shall comply with the following regulations. The gold content of the 98 gold foil is 98%±1%;
The gold content of the 77 gold foil is 77%±1%;
The gold content of the 74 gold foil is 74%±1%.
4.3 Product specifications and dimensional limit deviations are shown in Table 1. Table 1
93.3×93.3
83.3×83.3
44.5X44.5
Basic size
Length, mm
4.4 The average thickness of each hundred sheets of the product is (0.12±0.02)um. 5 Test methods
5.1 Product appearance: visual inspection.
Approved by the Ministry of Light Industry of the People's Republic of China on April 15, 1993 Limit deviation
Basic dimensions
Limit deviation
Implemented on December 1, 1993
QB/T 1734--1993
5.2 The gold content of the product shall be determined according to the method of GB/T9288. 5.3 Product specifications: Use a vernier caliper with an accuracy of 0.02mm to measure the side length of the product on the backing paper. 5.4 The thickness of the product shall be determined according to the method of QB/T1135, or measured and calculated by weight according to the method of QB/T1133. 6 Inspection rules
6.1 Products shall be inspected and qualified by the factory quality inspection department according to this standard and accompanied by a product certificate before they can leave the factory. 6.2 Product inspection is divided into factory inspection and type inspection. 6.2.1 The factory inspection items are 4.1 and 4.3, and all inspections are carried out. 6.2.2 Under normal circumstances, type inspection is carried out once a year, and samples are drawn from qualified products of factory inspection. The sampling plan adopts the one-time sampling plan of GB/T2829, and the discrimination level, sample number, technical requirements, test method, unqualified quality level (RQL), and judgment array A. and R. are as specified in Table 2.
Sample number, pieces
Technical requirements
7 Marking, packaging, transportation, storage
Test method
7.1 Each piece of gold foil is backed with double-layer backing paper and neatly bundled and packed in boxes. Discrimination level
Unqualified quality level
Each packaging box should be accompanied by a product certificate, and the certificate should have the following marks. 7.2
Variety name;
Quantity;
Date of sale;
Inspection date;
Inspection work number.
7.3The following signs should be on the outer packaging box.
Variety name;
Standard number:
Trademark;
Factory name and address;
Quantity,
Date of sale;
"Do not press heavily" and "Prevent moisture" and other words. The product should be stored in a ventilated, dry and non-corrosive environment. 7.4
7.5The product should be transported by clean means, do not press heavily and avoid moisture. Additional remarks:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Jewelry Standardization Center. This standard was drafted by Nanjing Jiangning Gold Foil General Factory. The main drafters of this standard are He Qibao, Zhao Yuxiang and Wei Ming.
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