Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
The standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of the National Technical Committee on Leather of Standardization Administration of China (SAC/TC 252).
This standard is issued as first edition.
Hardware Fitting of Case and Bag - Magnetic Buckle
1 Scope
This standard specifies the terms and definitions, requirements, test methods and inspection rules of magnetic buckle.
This standard is applicable to magnetic buckle for various cases and bags.
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 normative document (including any amendments) applies.
QB/T 2002.1 Technical Specification for Electroplated Layer on Leather Hardware Accessory
QB/T 3821-1999 Adhesion Testing Method of the Metal Deposits for the Light Industrial Products
QB/T 3826 Corrosion-resistant Testing Method of the Metal Deposits and Conversion Coatings for the Light Industrial Products - Neutral Salt Spraying Test (NSS)
QB/T 5086 Magnetic Buckle. Test Method for Resistance to Fatigue
3 Terms and Definitions
For the purposes of this standard, the terms and definitions specified in QB/T 2002.1 apply.
3.1
magnetic buckle
metal buckle products fitted by magnetic force
3.2
fit parts
visible part after assembling of magnetic buckle, which is classified into upper part and lower part, as shown in Figure 1
Figure 1 Schematic Diagram for Fit Parts
4 Requirements
4.1 Appearance quality
4.1.1 Product surface is smooth and free of obvious dent, scratch or stain, and its edge is regular and color is uniform.
4.1.2 Coating surface shall be free from obvious pinhole, discoloration, pitting, peeling, burn, scaling, blistering, skip coating or serious mechanical damage.
4.1.3 Pattern and characters are clear.
4.1.4 The fitting is flat, smooth and regular.
4.2 Physical and chemical properties
It shall meet the requirements specified in Table 1.
Table 1 Physical and Chemical Properties
S.N. Item Requirements
1 Fit force/N ≥ 8
2 Tensile strength /N ≥ 50
3 Durability After the test, it can be switched on/off normally without abnormality
4 Corrosion resistance The number of corrosion spots shall not exceed 3, and the area of a single corrosion spot shall not be greater than 1mm2
5 Bonding strength of galvanized coating Coating is free of uncovering or shedding
5 Test Methods
5.1 Appearance quality
For appearance requirements, the specimen shall be visually inspected at a distance of 500~700mm under favorable light.
5.2 Physical and chemical properties
5.2.1 Fit force
Inspect according to Annex A.
5.2.2 Tensile strength
Inspect according to Annex B.
5.2.3 Durability
Inspect according to QB/T 5086 and test 1000 times.
5.2.4 Corrosion resistance
Inspect according to QB/T 3826, Test period is 16h and only evaluate fit parts.
5.2.5 Bonding strength of galvanized coating
Inspect according to the scratch method in 2.3, QB/T 3821-1999.
6 Inspection Rules
6.1 Batching
The same type of products which are produced with the same type of raw materials and by the same production process can be regarded as an inspection batch.
6.2 End-of-manufacturing inspection
Each batch of products may not leave the factory until passing the inspection.
6.3 Type inspection
6.3.1 Type inspection shall be carried out under one of the following conditions:
a) Where the product structure, process and materials have significant changes;
b) Where the production is resumed after production halt for over half a year;
c) Where type inspection is required by national quality supervision organization;
d) During normal production, type inspection shall be carried out at least once every half year.
6.4 Sampling quantity
Randomly take 18 products from acceptable products passing end-of-manufacturing inspection, and take three for test of each item based on 6 items, namely appearance quality, fit force, tensile strength, durability, corrosion resistance, bonding strength of coating.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
5 Test Methods
6 Inspection Rules
Annex A (Normative) Test Method for Fit Force
Annex B (Normative) Test Method for Tensile Strength
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
The standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of the National Technical Committee on Leather of Standardization Administration of China (SAC/TC 252).
This standard is issued as first edition.
Hardware Fitting of Case and Bag - Magnetic Buckle
1 Scope
This standard specifies the terms and definitions, requirements, test methods and inspection rules of magnetic buckle.
This standard is applicable to magnetic buckle for various cases and bags.
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 normative document (including any amendments) applies.
QB/T 2002.1 Technical Specification for Electroplated Layer on Leather Hardware Accessory
QB/T 3821-1999 Adhesion Testing Method of the Metal Deposits for the Light Industrial Products
QB/T 3826 Corrosion-resistant Testing Method of the Metal Deposits and Conversion Coatings for the Light Industrial Products - Neutral Salt Spraying Test (NSS)
QB/T 5086 Magnetic Buckle. Test Method for Resistance to Fatigue
3 Terms and Definitions
For the purposes of this standard, the terms and definitions specified in QB/T 2002.1 apply.
3.1
magnetic buckle
metal buckle products fitted by magnetic force
3.2
fit parts
visible part after assembling of magnetic buckle, which is classified into upper part and lower part, as shown in Figure 1
Figure 1 Schematic Diagram for Fit Parts
4 Requirements
4.1 Appearance quality
4.1.1 Product surface is smooth and free of obvious dent, scratch or stain, and its edge is regular and color is uniform.
4.1.2 Coating surface shall be free from obvious pinhole, discoloration, pitting, peeling, burn, scaling, blistering, skip coating or serious mechanical damage.
4.1.3 Pattern and characters are clear.
4.1.4 The fitting is flat, smooth and regular.
4.2 Physical and chemical properties
It shall meet the requirements specified in Table 1.
Table 1 Physical and Chemical Properties
S.N. Item Requirements
1 Fit force/N ≥ 8
2 Tensile strength /N ≥ 50
3 Durability After the test, it can be switched on/off normally without abnormality
4 Corrosion resistance The number of corrosion spots shall not exceed 3, and the area of a single corrosion spot shall not be greater than 1mm2
5 Bonding strength of galvanized coating Coating is free of uncovering or shedding
5 Test Methods
5.1 Appearance quality
For appearance requirements, the specimen shall be visually inspected at a distance of 500~700mm under favorable light.
5.2 Physical and chemical properties
5.2.1 Fit force
Inspect according to Annex A.
5.2.2 Tensile strength
Inspect according to Annex B.
5.2.3 Durability
Inspect according to QB/T 5086 and test 1000 times.
5.2.4 Corrosion resistance
Inspect according to QB/T 3826, Test period is 16h and only evaluate fit parts.
5.2.5 Bonding strength of galvanized coating
Inspect according to the scratch method in 2.3, QB/T 3821-1999.
6 Inspection Rules
6.1 Batching
The same type of products which are produced with the same type of raw materials and by the same production process can be regarded as an inspection batch.
6.2 End-of-manufacturing inspection
Each batch of products may not leave the factory until passing the inspection.
6.3 Type inspection
6.3.1 Type inspection shall be carried out under one of the following conditions:
a) Where the product structure, process and materials have significant changes;
b) Where the production is resumed after production halt for over half a year;
c) Where type inspection is required by national quality supervision organization;
d) During normal production, type inspection shall be carried out at least once every half year.
6.4 Sampling quantity
Randomly take 18 products from acceptable products passing end-of-manufacturing inspection, and take three for test of each item based on 6 items, namely appearance quality, fit force, tensile strength, durability, corrosion resistance, bonding strength of coating.
Contents of QB/T 5085-2017
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
5 Test Methods
6 Inspection Rules
Annex A (Normative) Test Method for Fit Force
Annex B (Normative) Test Method for Tensile Strength
