This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of wire strippers. This standard applies to wire strippers that strip the plastic or rubber insulation layer of telecommunication wires with a core diameter of ￠0.5 to 2.5 mm under non-powered conditions. QB/T 2207-1996 Wire Strippers QB/T2207-1996 Standard download decompression password: www.bzxz.net

QB/T 2207—1996
This standard is based on the product numbered 1.5.1 in ISO8979:1988 "Telecommunications Twist Pliers and Cutting Pliers-Terminology", and is revised and converted into an industry standard for the former Ministry of Light Industry Standard SG182-1980 "Technical Conditions for Wire Strippers". This standard adds product classification, basic dimensions, inspection rules, etc. in terms of technical content. Three other products produced in my country that are not included in international standards are added to the product classification. In terms of technical requirements, in addition to retaining the content in SG182 that has been proven to be suitable for my country's situation in practice, technical indicators such as bending strength, blade gap, and blade misalignment are added, and the requirement of "safe use with 500 volts of electricity" in the original standard is cancelled. It is strictly stipulated that wire strippers must be used under non-electrical conditions to ensure personal safety. This standard has modified and improved some quality indicators, reflecting the technical level of my country's wire stripper products. This standard will replace SG182-1980 from the date of implementation. This standard is proposed by the Quality Standards Department of China Light Industry Association. This standard is under the jurisdiction of the National Tool Hardware Standardization Center. The drafting units of this standard are: Shanghai Tool Industry Research Institute, Wenzhou Pliers Factory, Anhui Tool Factory, Hunan Lianyuan Tool Factory, Henan Weihui Tool Factory, etc.
The main drafters of this standard are: Cheng Yiping, Hu Xiaolin, Cheng Yongfeng, Liang Pingqiang, Cao Guoyin, Li Tingchen, Wang Xudong. This standard is entrusted to the National Tool Hardware Standardization Center for interpretation. 565
1 Scope
Light Industry Industry Standard of the People's Republic of China
Wire Strippers
QB/T2207.1996
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of wire strippers. This standard applies to wire strippers that strip the plastic or rubber insulation layer of telecommunication wires with a core diameter of d0.5 to 2.5mm under non-electrical conditions.
Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T230-1991
Metal Rockwell hardness test method
GB/T2828--1987Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches)GB/T5023.2-1985Polyfluoroethylene insulated cables (wires) with rated voltage of 450/750V and below for fixed laying cables (wires)
GB/T5305--1985Packaging, marking, transportation and storage of hand toolsJB/T1601-1993Rubber insulated fixed laying wires with rated voltage of 300/500V3 Product classification
3.1 Type
Wire strippers are divided into four categories according to their structure. Their types and names are shown in Figures 1 to 4. L
Approved by China Light Industry Federation on March 22, 1996
Adjustable end face wire stripping pliers
Implemented on December 1, 1996
QB/T 2207
Figure 2 Automatic wire stripping pliers
Figure 3 Multifunctional wire stripping pliers
The basic dimensions of the wire stripping pliers are given in Table 1.
Adjustable end face wire stripping pliers
Automatic wire stripping pliers
Multi-function wire stripping pliers
Crimp wire stripping pliers
4 Technical requirements
4.1 Surface quality
160±8
170±8
170±8
200±8
QB/T2207-—1996
Figure 4 Crimping wire stripping pliers
120±5
4.1.1 The surface of the wire stripping pliers shall not have defects such as cracks, burrs, pits and rust. 4.1.2 The shape of the wire stripping pliers shall be symmetrical, flat and consistent. 4.1.3 The trademark on the pliers shall be straight and clear. 4.1.4 The handle and other parts should have a smooth surface without burrs, missing materials, scars and other defects. 4.1.5 The pliers body can be treated with one of the following surface treatments: a) surface polishing;
b) blackening;
c) electroplating;
d) plastic spraying;
e) baking varnish and other surface treatments.
4.2 Pliers head
4.2.1 The pliers head should be able to open and close flexibly and open and close freely under the action of the spring. 4.2.2 Cutting edge gap
When the cutting edge is in the closed state, its cutting edge gap should not be greater than 0.3mm. 4.2.3 Cutting edge misalignment1
1) In the plane perpendicular to the conductor to be stripped of insulation, the maximum misalignment of the two cutting edges. 568
QB/T 2207—1996
4.2.3.1 The misalignment of the two cutting edges of adjustable end-face wire strippers shall not exceed 0.5mm. 4.2.3.2 The misalignment of the two cutting edges of multifunctional wire strippers shall not exceed 0.5mm. 4.2.3.3 The misalignment of the two cutting edges of other wire strippers shall not exceed 0.2mm. 4.3 Handle
4.3.1 The handle of the wire stripper shall be comfortable to hold and may be equipped with a handle cover. 4.3.2 The handle of the wire stripper shall have sufficient bending strength. After the adjustable end-face wire stripper is subjected to a load test of 20N·m, the permanent deformation of the handle shall not exceed 1mm.
4.4 Hardness
The hardness of the wire stripper's jaws shall not be less than HRA65 or HRC30.4.5 Wire stripping performance
The wire stripper shall be able to smoothly strip the plastic or rubber insulation layer on the outside of the wire with a core diameter of 0.5mm to 2.5mm. 5 Test method
5.1 Dimension inspection
The dimensions of the wire stripper shall be inspected with a general measuring tool. 5.2 Inspection of the surface quality of the pliers
The surface quality of the pliers of the wire stripper shall be inspected visually. 5.3 Hardness test
The hardness test of the wire stripper's jaws shall be carried out in accordance with the provisions of GB/T230, where the adjustable end face wire stripper and the crimping wire stripper shall be carried out on a plane near the jaws, and other wire strippers shall be tested on the force sheet substrate. 5.4 Flexibility test
The flexibility of the opening and closing of the wire stripper's jaws shall be inspected by hand. 5.5 Blade gap inspection
The blade gap of the wire stripper is inspected with a feeler gauge. 5.6 Blade misalignment test
The blade misalignment of the wire stripper is directly or indirectly inspected with a measuring tool with an accuracy of 0.02mm or more. 5.7 Bending strength test
5.7.1 Bending strength test of adjustable end face wire stripper As shown in Figure 5, a load application point is determined at the widest position of the pliers handle at a distance from the pliers axis L, and the handle width WI of the pliers is measured in the closed state, and then the load F is applied to the rated value. After repeated loading twice, the pliers are removed and closed, and the handle width W2 at the same position is measured. The permanent deformation S (S=W1Wz) should meet the requirements of 4.3.2. 5.7.2 The bending strength of other wire strippers should be tested by hand in the wire stripping state. F
Note: L is the distance from the center of the pliers axis to the load application point. Figure 5 Bending strength test of adjustable end face wire stripper F
5.8 Wire stripping performance test
QB/T 2207.-. 996
The wire stripping performance test of wire strippers shall adopt the wire specified in JB/T1601 or GB/T5023.2. Two kinds of wire core specifications within the range of 60.5-2.5mm shall be selected for testing respectively, and evaluated by hand feeling and visual inspection respectively. The results shall comply with the provisions of 4.5. 6 Inspection rules
6.1 Products shall be shipped only after passing the inspection and shall be accompanied by product certificates. 6.2 Product inspection shall be carried out according to the secondary sampling plan specified in GB/T2828. 6.3 The classification of unqualified products, inspection items, qualified quality level AQL (number of unqualified products per 100 units of products), and inspection level 11. shall be in accordance with the provisions of Table 2.
Classification and grouping of non-conforming productswwW.bzxz.Net
Inspection items
Wire stripping performance test
Flexibility test
Jaw hardness test
Blade gap test
Bending strength test
Blade misalignment measurement
Dimensional inspection
Surface quality of clamp body
Qualified quality level AQL
6.4 The manufacturer shall replace the non-conforming products found in the delivery inspection and the samples damaged after the test. 6.5 The batches of products rejected after inspection can be reclassified or repaired by the manufacturer before submission for acceptance. Marking, packaging, transportation, storage
The marking, packaging, transportation and storage of products shall comply with the provisions of GB/T5305. 570
Inspection of water IL
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