The various materials used in the manufacture of wires and cables are not only numerous in categories, varieties, and specifications, but also in large quantities. Therefore, the usage amount, spare amount, batch cycle and batch size of various materials must be approved. At the same time, the decomposition, recycling, reuse and waste disposal of waste products are an important part of management, and we must do a good job in material quota management and pay attention to conservation work. In production, from the entry, exit and storage of raw materials and various auxiliary materials, the flow of semi-finished products in each process to the storage and delivery of products, the material flow is large and must be reasonably laid out and dynamically managed.

The manufacturing of wires and cables involves a wide range of processes, from smelting and pressure processing of non-ferrous metals, to chemical technologies such as plastics, rubber, and paints; textile technologies such as wrapping and weaving of fiber materials, to wrapping and metal strips of metal materials Longitudinal wrapping, welding metal forming processing technology, etc.

How does compensation cable work? How to avoid buying fake and inferior products for marine wires and cables?

Within a certain temperature range, a wire whose thermoelectric properties are very similar to those of a thermocouple is called a compensation wire of a thermocouple.

According to the thermocouple intermediate temperature rule, the total potential value of the thermocouple temperature measurement loop is only related to the temperature of the hot end and the reference end, and is not affected by changes in the intermediate temperature, so it can be replaced by a compensation wire that matches the thermocouple material. It is necessary to extend the precious thermocouple material to extend the reference end from the thermocouple junction box to the instrument terminal, and use the compensation wire to compensate the temperature of the original reference end.

In addition to reducing measurement errors, compensation wires also have the following advantages: they can improve the physical and mechanical properties of thermocouple temperature measurement circuits. For example, using multi-strand wire cores or small-diameter compensation wires can improve the flexibility of the circuit and facilitate connection. It is also easy to shield external interference; it can reduce the cost of measurement lines.

How to avoid buying fake and inferior products for marine wires and cables. When purchasing wires, you should buy them from regular manufacturers and look for the national electrician certification mark and the trademark, specifications, voltage, etc. printed on the wires.

1. Wires with good weight and quality are generally within the specified weight range. How to avoid buying fake and inferior products for marine wires and cables

2. The copper core of qualified copper core wires should be purple-red, shiny, and soft to the touch. The copper core of fake and inferior copper core wires is purple-black, yellowish or white, with many impurities, poor mechanical strength, and poor toughness. It will break with a little force, and there are often disconnections in the wires. When checking, you only need to peel off one end of the wire by 2cm, and then rub the copper core with a piece of white paper. If there is black substance on the white paper, it means there are more impurities in the copper core. In addition, the insulation layer of fake and inferior wires seems to be very thick, but in fact most of them are made of recycled plastic. Over time, the insulation layer will age and leak electricity.

3． Counterfeit and shoddy wires from manufacturers are often "three-no products", but they also have ambiguous origin and other markings on them, such as Made in China, Made in a certain province or city in China, etc. This actually means that the origin is not indicated.

How to avoid buying fake and inferior products for marine wires and cables 4. Price Due to the low production cost of fake and inferior wires, vendors often sell them at low prices under the guise of low price and high quality, which deceives people.