QB/T 2442.1-1999 Pinch, twist and cut pliers, wire cutters QB/T2442.1-1999 Standard download decompression password: www.bzxz.net

QB/T 2442.1--1999
This standard is based on the requirements of the State Administration of Quality and Technical Supervision to clean up and rectify national standards. The original national standard GB6295.1-1986 "Pliers, twisting and shearing pliers, wire cutters" was changed to an industry standard (this standard was issued by the State Light Industry Bureau [1999] No. 112 document and converted to QB/T3853.1-1999, the content is the same as before). This standard is based on the original national standard GB6295.1--1986, and refers to the international standard ISO5746:1988 "Pliers and shearing pliers-wire cutters and electrician pliers dimensions and test values". The "A" and "B" classifications of the bending strength of the pliers handle in the original national standard have been cancelled, and the torque test has been added.
This standard will replace GB6295.1-1986 from the date of implementation. This standard was proposed by the Industry Management Department of the State Administration of Light Industry. This standard is under the jurisdiction of the National Tool Hardware Standardization Center. The responsible drafting unit of this standard is Shanghai Tool Industry Research Institute; participating drafting units are Shandong Weifang Pliers Factory, Sichuan Mianyang Tool Factory and Anhui Tool General Factory.
The main drafters of this standard are Lin Meide, Cheng Yiping, Chen Anxin and Chen Fuqiang. 716
Light Industry Standard of the People's Republic of China
Clip and Twist Pliers
Wire Cutter
This standard refers to the international standard ISO5746:1988 "Clip and Shear Pliers Values".
1 Scope
This standard specifies the product classification, technical requirements and test methods of wire pliers. QB/T 2442.1—1999
Replaces QB/T3853.1-1999
Dimensions and test numbers of wire pliers and electrician pliers This standard applies to wire pliers. When there are special requirements for the product, it may not be restricted by this standard. 2 Referenced 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/T6290—1999 General technical conditions for twist pliers and shearing pliers GB/T6291—1999 Test methods for twist pliers and shearing pliers 3 Product classification
3.1 Type
The type of wire cutters is shown in Figure 1. According to needs, wire cutters can also be without gill cutting edges. F
3.2 Basic dimensions
The basic dimensions of wire cutters are specified in Table 1.
Approved by the State Bureau of Light Industry on May 6, 1999
Types of wire cutters
Implemented on December 1, 1999
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160±8
180±9bzxz.net
200±10
QB/T2442.1—1999
Table 1 Basic dimensions
Note: When the user has other requirements for the dimensions, they can be determined through negotiation. 3.3 Marking example
The marking of the product should be composed of the product name, specification and standard number. Marking example of 160mm wire cutters:
Wire cutters 160mmQB/T2442.1-1999. 4 Technical requirements
4.1 Bending strength
The bending strength of wire cutters must comply with the provisions of Table 2. Table 2 Bending strength
4.2 Torque
The torque of the wire cutters must comply with the provisions of Table 3. L
4.3 Shearing performance
Table 3 Torque
4.3.1 The shearing performance of the wire cutters must comply with the provisions of Table 4. Table 4 Shearing performance
4.3.2 The wire cutters should be able to smoothly shear non-ferrous metal wires. 4.4 Mouth-top gap
Cutting load F
Torque T
Test wire diameter D
Permanent deformation Smax
Maximum torsion angle αmax
Maximum shearing force F1
The maximum gap of the mouth of the wire cutters is shown in Figure 2. When the handle of the pliers is tightly held, the maximum gap? is not greater than 0.4mm. 718
4.5 Other technical requirements
QB/T2442.1—1999
Figure 2 Mouth top gap
Other technical requirements for wire cutters shall comply with the provisions of GB/T6290. Test method
The test method for wire cutters shall comply with the provisions of GB/T 6291. irikAoNnikAca
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