![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Wire: It is composed of one or more soft wires, and the outer bread is made of light and soft sheath, which is used for the conductive metal wire that carries the current. There are solid twisted or foil braided and other forms. Divided into two categories according to the insulation status of bare wires and insulated wires.
Insulated wires are divided into electromagnetic wires and general insulated wires according to their purposes. Universal insulated wires include various cable mounting lines. Electromagnetic wire refers specifically to making insulated wires for coils or windings.
How to prevent wire and cable from catching fire
1. Guarantee the construction quality, especially the production quality of the cable head must strictly meet the requirements of the regulations.
2. Strengthen cable operation monitoring to avoid overloaded cable operation.
3. Conduct the cable test as scheduled and if it is found to be abnormal, it should be handled in time.
4. The cable trench should be kept dry to prevent the cable from getting wet, causing the insulation to drop and causing a short circuit.
5. Regularly clean the dust accumulated on the cable to prevent the cable from catching fire due to self-ignition of accumulated dust.
6. Strengthen regular check and maintenance of the circuit switch and protection of the cable to ensure reliable operation.
7. When laying the cable, keep a sufficient distance from the heat pipe, the control cable is not less than 0.5 meters; the power cable is not less than 1 meter. Control cables and power cables should be divided into slots, layers and separate layouts. They cannot be placed in layers. For parts that do not meet the regulations, the cables shall be fire-retardant and heat-insulated.
8. Install a fire alarm device to detect the fire in time to prevent the cable from catching fire.
9. Take fire retardant measures.
Bare wires do not contain any insulated or protective wire. In addition to being a wire for transmitting electrical energy and information, it can also be used for making components and connecting wires for electrical appliances. General use of copper aluminum alloy aluminum alloy and copper clad steel aluminum clad steel and other composite metal materials. In addition to good electrical conductivity, bare wires have certain mechanical properties such as tensile strength elongation, bending torsion properties, creep resistance, and wear resistance.
"Wire" and "cable" are conceptually not strictly bounded. In the narrow sense, it is divided into "wires" and "cables," which are collectively referred to as "cables." Usually think: (1) Single root is called "line"; multiple roots are called "cable". (2) Small diameter is called "line"; large diameter is called "cable". (3) A simple structure is called "line"; a complex structure is called "cable." With the expansion of the scope of use, many varieties "cables in the line", "cables in the cable." Therefore, there is no need to make a strict distinction.
How to identify the advantages and disadvantages when buying a wire
The state has explicitly stated that copper conductors should be used in new houses. However, copper conductors, as well as inferior copper conductors, have copper cores that use recycled copper and contain many impurities. Some poor-quality copper conductors are even less conductive than iron wires and can easily cause electrical accidents. At present, there are many kinds of wires on the market, many specifications, and prices are chaotic. It is very difficult for consumers to choose. In terms of the prices of 2.5 square millimetres and 4 square millimetres of two kinds of copper wires that are commonly used in home decoration, the price of one line of the same specification may vary by 20% to 30% because of different manufacturers. As for the quality, whether the length is up to standard, consumers are even more difficult to determine.
According to industry sources, the reason why the prices of wires are so different is that they are caused by different raw materials used in the production process. The main raw materials for producing wires are electrolytic copper, insulating materials and sheathing materials. At present, the raw material market has about 5 million yuan per ton of electrolytic copper, and only about 40,000 yuan per ton of recycled copper; the price of high-quality insulation materials and sheathing materials is between 8,000 yuan and 10,000 yuan per ton, and defective products. The price of only 4,000 yuan to 5,000 yuan per ton, the difference is even more disparity. In addition, the lack of length and inadequate insulation of the insulators are also important reasons for price differences. The length of each line, excellent products is 100 meters, while the defective product is only about 90 meters; the insulation content of excellent products accounted for 35% to 40%, while the defective product is only 15%. By contrast, it is not difficult for consumers to see that the difference in the sales price of finished wire is due to the presence of tricky materials.
Aluminum Die Casting Reducer Box Housing
Reducer Box is precision machinery, use it for the purpose of reducing speed, increase the torque.
1. As client's requirements, in perfect condition.
2. Aluminium casting, sand casting, die casting, gravity, high pressure die casting, low pressure die casting, casting foundry.
3. Applied software for specification drawings: Pro/E, Auto CAD, Solid work, CAXA UG, CAD/CAM/CAE.
4. Secondary Machining: CNC turning, milling, drilling, planning, grinding.
5. Surface Finish: chrome plating, sandblasting, painting, powder coating, anodize, electrophoresis
6. Made according to customers' prints, specifications or samples.
7. Great quality and strict delivery time.
Aluminium die casting reducer Boxes Advantage:
1. Size precision, smooth surface, high production efficiency.
2. Different surface treatments.
3. Advanced equipment, excellent R&D teams and strict quality control system.
If you want to find a Manufacturer of Aluminum Die Casting Reducer Boxes,please contact us, we will give you a product in good quality and competitive price.
Aluminum Die Casting Reducer Box Housing
Gear Reducer Box,Gear Reducer Box Cover,Aluminum Die Casting Reducer Components,Oem Aluminum Die Casting Reduce
Ningbo WEIBO Molding&Machine Co.,Ltd. , https://www.diecasting-manufacturers.com