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repair tools (1844)

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Common electrician maintenance and the manual tools, measuring tools, and welding tools that need to be purchased. At present, many maintenance workers cannot buy all the tools they need when purchasing tools, manual tools, measuring tools, and welding tools. The following is our factory for electrician maintenance workers. When buying hand tools, measuring tools, and welding tools, I hope you can carefully consider these tools when purchasing hand tools, measuring tools, and welding tools.
1. Hand tools (there are three series of hand tools, please be sure to buy them all) 1. Screwdriver (also called screwdriver or screwdriver): Phillips screwdriver, slotted screwdriver, other shapes (depending on the screw) 2. Pliers, needle-nose pliers: main Used to clamp small screw caps and twist hard steel wires. The sharp end is used to cut the wire. Vise: The main function is basically the same as the needle-nose pliers. Diagonal pliers: Used to cut thin wires or trim and weld excess wires. Stripping Pliers: A tool mainly used to quickly peel off the plastic covered wire outside of the wire. When using it, pay attention to selecting the hole diameter. Do not cut the inner metal core wire with the knife. 2. Electrician's knife. 2. Measuring tools (there are two series of measuring tools. Products, please be sure to buy them all) 1. Test pencil: used to check whether the tested object is charged. If the tested object is charged, it will make the neon tube in the electric pen glow. When using the test pencil to test the charged object, such as the electrode in the neon bulb When a glow occurs at one end, the measured electricity is direct current. If both ends of the electrodes in the neon bulb glow, the measured electricity is alternating current.
2. Multimeter: Mainly used to measure AC and DC voltage, current, DC resistance and transistor current amplification digits. Nowadays, there are mainly two kinds of digital multimeters and mechanical multimeters. (1) The digital multimeter will see the conversion knob on the multimeter. The knob refers to the gear position of the secondary quantity: V~: It means the gear position for measuring AC voltage. V-: It means the gear position for measuring DC voltage. MA: It indicates the gear for measuring DC voltage Ω(R): It indicates the gear for measuring resistance. HFE: It indicates the measurement of transistor current amplification digits. The red pen of the multimeter indicates the positive pole of the external circuit, and the black pen indicates the negative pole of the external circuit. .
Advantages: anti-magnetic, convenient and accurate reading (digital display) (2) Mechanical multimeter The appearance of mechanical multimeter is different from that of digital meter, but the shift knobs of the two are the same, and the gear positions are basically the same.
On a mechanical watch, you will see a dial with eight scales: The scale marked with "Ω" is the scale used when measuring resistance, and the scale marked with "~" is for measuring AC and DC voltage. The scale used for DC current is engraved. The scale marked with "HFE" is the scale used for measuring transistors. The scale marked with "LI" is used to measure the current of the load.
The voltage scale marked with "DB" is the scale for measuring the level. (3) The use of the multimeter. Digital multimeter: Set the measurement position before measuring. It should be noted that the scale marked on the scale is the range. That is, the maximum value mechanical multimeter: the method of measuring current and voltage is the same as the mathematical formula, but when measuring the cathode, the reading must be multiplied by the value on the gear to be the measured value.
1. Hand-held hammer is mainly composed of two parts: hammer head and handle. The weight of the hammer head is 0.25 kg, 0.5 kg, 0.75 kg, 1 kg and so on. The weight of the hammer head is 0.25 kg, 0.75 kg, 1 kg and so on.

2. Screwdriver
Screwdrivers are also known as screwdrivers. According to their functions, they can be divided into two types: straight and cross. According to the material and shape, they can be divided into wooden handle screwdrivers, through-core screwdrivers, insulated screwdrivers and eccentric screwdrivers.

A screwdriver is a tool used to tighten or loosen slotted screws. Screwdriver specifications (length of rod): 50 mm································· dozens of types. When using a screwdriver, it is required that the edge of the screwdriver should be flush and consistent with the width of the screw groove, and there should be no oil on the screwdriver. Make the screwdriver opening and the screw groove completely coincide. After the center line of the screwdriver is concentric with the center line of the screw, turn the screwdriver to tighten or loosen the screw. Tip: Many screwdrivers nowadays have magnetism on their tips.

3. Pliers

Needle-nose pliers   alias: trimmer pliers, pointed pliers, flat-nose pliers. It is composed of a pointed tip, a knife edge and a pliers handle. 

Needle-nose pliers use: the pliers handle is covered with an insulating sleeve with a rated voltage of 500V. It is a commonly used pliers tool. Uses It is mainly used to cut single-strand and multi-strand wires with thinner wire diameters, as well as for single-strand  conductor joints, stripping plastic insulation, etc. It can be operated in a relatively small working space. For pinch work, those with blades can cut small parts. When using, be careful not to face yourself to avoid injury.

Bass pliers, used to clamp flat or cylindrical parts, with blades that can cut metal. When using, wipe off the oil on the pliers to avoid slipping during work. After clamping the parts, bend or twist them again; when clamping large parts, enlarge the jaws. Do not use pliers to turn bolts or nuts.

Snap ring pliers is a special tool mainly used for the assembly and disassembly of inner and outer elastic snap rings. It is more common in the maintenance of internal parts of automobiles.

Precautions for use:

1. The force should be steady to prevent it from falling off or breaking.

2. Wear gloves to prevent hurting people after the snap ring is broken.

3. Also wear goggles.

4. Wrench
Open-end wrench

An open-end wrench is a basic fixed-size open-end wrench, also called a fork wrench. Because the opening of this type of wrench is fixed, bolts and nuts of different sizes and specifications need to correspond to the wrench one-to-one. The opening specifications are usually marked on the wrench. The distance between the opposite sides of the hexagonal or square nut is the model of the applicable wrench opening. Although the opening of the open-end wrench is fixed and highly targeted, it has a stable structure and is durable. In practice, it is much easier to use than an adjustable wrench.

1. The open-end wrench can only pull the bolt or nut in a limited space. After the bolt or nut is pulled to the extreme position, take out the wrench and repeat the original process. 

2. The direction of pulling the wrench should be toward the direction of the attached jaw. 

3. When using an open-end wrench for the final tightening, the force applied to the wrench should not be too large, otherwise it will cause the thread or the outside of the nut to slip. 

4. The wrench should be completely clamped on the bolt to increase the contact area. 

5. Only use wrenches with the same size as the bolt or nut opposite side distance. 

6. If the size of the wrench is selected too large, the bolt or nut will be damaged. 

7. Wrong use of the wrench will damage the wrench or bolts and nuts

Torx wrench is suitable for folding bolts or nuts in the range of 5~27 mm. Each set of torx wrenches has 6 pieces and 8 pieces. The two ends of the torx wrench are like sleeves. There are 12 corners and two hexagons, which can cover the head of the bolt or nut, and it is not easy to slip off when working. Some bolts and nuts are restricted by surrounding conditions, and torx wrenches are particularly suitable.

Precautions for use:

1. Do not use damaged or cracked torx wrenches, otherwise you will hurt yourself. 

2. The hexagonal torx wrench is more slip resistant than the 12-sided torx wrench. 

3. The selection of torx wrench should be compatible with the size of bolts or nuts. 

4. The bolt or nut sleeve must be firm before pulling force, otherwise the bolt or nut will be damaged. 

5. Don't use a pipe on the wrench to increase the length of the wrench for tightening. This will damage the wrench or bolts and nuts.

Socket wrench is suitable for dismantling and installing certain bolts and nuts in places where ordinary wrenches cannot work due to their location limitations. When disassembling bolts or nuts, different sleeves and handles can be selected according to the needs. There are also sets of all these tools, such as Nanjian’s 32-piece set and Shida’s 27-piece set, etc.

Special wrenches: or ratchet wrenches, quick-flying wrenches, etc., should be used in conjunction with socket wrenches. It is generally used for tightening or disassembling bolts or nuts in narrow places. It can disassemble or assemble bolts or nuts without changing the angle of the wrench.

5. Torque wrench

Pointer torque wrench: used to tighten the bolt or nut with the sleeve. Torque wrenches are indispensable in auto repair. For example, the tightening of cylinder head bolts, crankshaft bearing bolts, etc. must use torque wrenches. The torque wrench used in car repairs has a torque of 2881 Newton meters. 

The preset torque wrench has a preset torque value and sound device. When using, first set an upper limit of the required torque value. When the applied torque reaches the set value, the wrench will make a "click" sound or the wrench joint will bend a little angle, accompanied by obvious hand-feel vibration. It means that it has been tightened and no more force is required. After the force is released, the relevant parts of the wrench can be automatically reset.

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