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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
ICS 59.140.35
分類號：Y 48
備案號：57118—2017
中華人民共和國輕工行業標準
QB/T 5085—2017
箱包五金配件 磁力扣
Hardware fitting of case and bag—Magnetic buckle
2017—01—09發布 2017—07—01實施
中華人民共和國工業和信息化部 發布
前言
本標準按照GB/T 1.1—2009給出的規則起草。
本標準由中國輕工業聯合會提出。
本標準由全國皮革工業標準化技術委員會(SAC/TC 252)歸口。
本標準起草單位：東莞市惟思德科技發展有限公司、廣州市質量監督檢測研究院、中國皮革和制鞋工業研究院、廣東省惠州市質量計量監督檢測所、國家皮革制品質量監督檢驗中心(廣州)。
本標準主要起草人：孫世彧、章瓊陽、陳立堅、黃淑華、陳宗良、步巧巧。
本標準為首次發布。
箱包五金配件 磁力扣
1 范圍
本標準規定了磁力扣的術語和定義、要求、試驗方法、檢驗規則。
本標準適用于各種箱包用磁力扣。
2規范性引用文件
下列文件對于本文件的應用是必不可少的。凡是注日期的引用文件，僅所注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。
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術語和定義
QB/T 2002.1的術語和定義適用于本文件。
3.1
磁力扣magnetic buckle
通過磁力吸合的金屬扣類產品。
3.2
扣合部件fit parts
磁力扣裝配后視覺可見的部件，分為上部件和下部件，如圖1所示。
上部件
下部件
圖1 扣合部件示意圖
4要求
4.1 外觀質量
4.1.1 產品表面平滑，不應有明顯的凹痕、劃痕、污漬，邊緣規整，色澤均勻。
4.1.2鍍層表面不應有明顯的針孔、變色、麻點，無剝離、燒焦、起皮、起泡、漏鍍及嚴重的機械損傷。
4.1.3圖案、文字清晰。
4.1.4扣合平服，周正。
4.2理化性能
應符合表1的規定。
表1理化性能
序 號 項 目 要求
1 扣合力/N ≥ 8
2 抗拉強力/N ≥ 50
3 耐用性 試驗后能正常開關，無異常
4 耐腐蝕性 腐蝕點個數不超過3個，且單個腐蝕點面積不大于1 mm2
5 電鍍層結合強度 鍍層不揭起或脫落
5試驗方法
5.1 外觀質量
外觀要求均在光線良好的情況下，距試樣500 mm～700 mm處目測進行檢驗。
5.2理化性能
5.2.1 扣合力
按附錄A進行檢驗。
5.2.2抗拉強力
按附錄B進行檢驗。
5.2.3耐用性
按QB/T 5086進行檢驗，測試1 000次。
5.2.4耐腐蝕性
按QB/T 3826進行檢驗，試驗周期為16 h，只評價扣合部件。
5.2.5電鍍層結合強度
按QB/T 3821—1999中2.3劃痕法進行檢驗。
6檢驗規則
6.1 組批
以同品種原料投產，按同一生產工藝生產出來的同一品種、同一規格的產品組成的一個檢驗批。
6.2 出廠檢驗
每批產品出廠前應經過檢驗，經檢驗合格后方可出廠。
6.3型式檢驗
6.3.1 有下列情況之一時，應進行型式檢驗：
a)產品結構、工藝、材料有重大改變時；
b)產品停產半年以上恢復生產時；
c)國家質量監督機構提出進行型式檢驗時；
d)正常生產時，每半年至少進行1次型式檢驗。
6.4抽樣數量
從出廠檢驗合格產品中隨機抽取18個進行檢驗，按外觀質量、扣合力、抗拉強力、耐用性、耐腐蝕性、鍍層結合強度6項分別各取3個進行測試。
6.5合格判定
6.5.1 單個判定規則
單項3個試樣測試，有1個及以上不合格，則判該項不合格。若產品出現影響產品使用功能的缺陷，即可判該產品不合格。
6.5.2批量判定規則
外觀質量、扣合力、抗拉強力、耐用性、耐腐蝕性、鍍層結合強度全部合格，則判該批產品合格。若有1項(及以上)不合格，則加倍抽樣對不合格項進行復驗，復驗全部合格，則判該批產品合格。若有1項(及以上)不合格，則判該批產品不合格。
附錄A
(規范性附錄)
扣合力試驗方法
A.1 試樣制備
將磁力扣的上下部件按正常使用方式分別固定在拉力機的夾具上。
A.2檢驗器具
拉力機，負荷至少100 N，準確度±0.5 N。
A.3檢驗方法
A.3.1 沿測試部件的主軸(即與扣合面垂直的方向)均勻施加拉力，記錄拉開時的最大力值，記為扣合力。
A.3.2重復A.3.1測試5次扣合力，以5次結果的算術平均值為最終結果，單位為牛頓(N)。
A.3.3重復A.3.2測試其他試樣。
A.3.4 以3個試樣扣合力的最小值表示。
附錄B
(規范性附錄)
抗拉強力試驗方法
B.1 試樣制備
將磁力扣的上下部件按正常使用方式分別固定在織物或皮革等承載物上。
B.2檢驗器具
B.2.1 拉力機，負荷至少100 N，準確度±0.5 N。
B.2.2三爪拉力夾具或相適應的夾具，夾具的使用不應影響磁力扣和織物或皮革承載物之間的完整結構。
B.2.3秒表(計時器)。
B.3檢驗方法
B.3.1 在5 s內，沿測試部件的主軸(即與扣合面垂直方向)，均勻施加(50±2)N的拉力，并保持10 s后卸荷，檢查被測部件是否拉脫或損壞。磁力扣的上部件和下部件均需測試。
B.3.2重復B.3.1，測試其他試樣。
B.3.3 以3個試樣抗拉強力的最小結果表示。
