Description

Ni-Cr High temp electrical wire has high resistivity, good surface oxidation resistance, high temperature level, and has high strength at high temperature, has good processing performance.Weldability.nickel chrome resistance wire can be widely used in metallurgy, household appliances, machinery manufacturing and other heating elements and electrical industry as resistance materials. Nickel chromium heating wire has long service life, as containing nickel, so the price is higher.

The characteristics of Ni-Cr High temp electrical wire are: (1) high strength at high temperature; (2) After long-term use and then cool down, the material will not become brittle; (3) The emissivity of fully oxidized ni-Cr alloy is higher than that of fe-Cr aluminum alloy; No magnetic; In addition to the sulfur atmosphere, it has good corrosion resistance.

The most important part of the heating element is the heating resistance wire, and the quality of the electric heating wire determines the excellent quality of the heating element. Studying the resistance value of resistance wire value determines the power.

Regarding the resistance value,we must check 2 points:
1.Determine the rated voltage and rated power provided to determine the resistance value. Through the formula: voltage * voltage/power = resistance.
2, the surface load of the heating wire can not exceed the standard, generally can not exceed 1.5w/cm².
When choosing the resistance value , selection is mainly based on the rated voltage and rated power provided by the customer, at the same time, we must also consider the surface load bearing capacity of the resistance wire. Thus, the service life of the electric heater is guaranteed.

Due to the different chemical composition, its use temperature, oxidation resistance to the use of different azole and determine the length of the temperature, in the iron chromium thermal alloy material determines the resistivity of AL element, nickel chromium electric alloy material determines the resistivity of the element N i element. At high temperature, the oxide film generated on the surface of the alloy element determines the service life. Because of the long period of use, the internal structure of the element is constantly changing, and the oxide film generated on the surface is constantly aging and damaged.

If the resistive wire is broken,can it be rewelding directly?

As we don't know the material and the working environment,so it is not clear question and we must know more in detail.

For example, the heating resistor wire temperature which is above 500 degrees, can not be welded together. The only way is to connect with wiring crutches, but the life is short and may not be suitable for the use of the environment.So the technician should find the best solution; For example, the electric heating wire used in normal 120 degrees needs to be welded:

Wrap the heads of the two electric heating wires around each other, and then burn the ends with the flame of a lighter, and the heads of the two resistance heating wire will be welded into a small round head.
Solder can be performed by applying diluted hydrochloric acid or solder paste to the welding heads of the two electric heating wires. This method will work

Product detail