Product details

PRODUCT NAME:

Ni-Cr alloy heating wire (straps)

PRODUCT BRIEF

Nickel-chromium wire (straps) has high resistivity, good surface oxidation resistance, high temperature grade, high strength at high temperature, good processability and solderability, and can be widely used in metallurgy, household Electrical appliances, machinery manufacturing, etc. to do the heating element and the electrical industry resistance materials.

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1.Introduction


Usually,Resistance wire or straps (heating wire or straps) is the electrical components,converting electric energy into internal energy 


The working principle of heating wire or straps  The working principle of heating wire (straps) is the same as that of other metal heating elements, which are all electrothermal phenomena after the metal is electrified. Electricity refers to the current through the conductor, the current will produce a certain amount of heat and be passed out by the conductor. Electric wire itself is a metal conductor, which emits heat when energized to provide heat.


Types of heating wire (straps)  The type of heating wire is divided according to the chemical element content and the structure of the heating wire. There are two types: iron chromium aluminum alloy electric wire and nickel-chromium alloy electric wire. These two kinds of electric heating wire as electric heating element, have different function characteristics.



2.The following main Nickel-chromium heating wire(straps)


1)Nickel-chromium wire (straps) has high resistivity, good surface oxidation resistance, high temperature grade, high strength at high temperature, good processability and solderability, and can be widely used in metallurgy, household Electrical appliances, machinery manufacturing, etc. to do the heating element and the electrical industry resistance materials. Long service life, but because of nickel, so the price is relatively high.


2)Characteristic of Ni-Cr alloy heating wire (straps)

①High strength at high temperature;

②Cool down after long-term use, the material will not become brittle;

③fully oxidized nickel-chromium alloy, its emissivity higher than iron-chromium-aluminum alloy;

④non-magnetic;

⑤In addition to sulfur gas, have better corrosion resistance.


3)nickel-chromium alloy grades and materials: Cr20Ni80, Cr15Ni60,Cr20Ni35, Cr20Ni30 etc


3.The main use of heating wire (straps)  Metallurgical machinery, medical, chemical, ceramics, electronics, electrical appliances, glass and other industrial heating equipment and heating equipment civilian.


4.Ni-Cr alloy heating wire (straps) Precautions:

1)Resistance wire (straps) in the design should be based on the power wiring method, a reasonable surface load, the correct choice of wire diameter;

2)Resistance wire (straps), before installation, it needs to do a comprehensive examination of the furnace. Remove the ferrite, coking on the furnace to avoid the hidden dangers, to avoid short circuit, to prevent the furnace wire breakdown;

3)Resistance wire (straps) in the installation should be properly connected by the design of wiring methods;

4)Before using the resistance wire (straps), you should check the temperature control system sensitivity to prevent temperature contraling failure, resulting in electric wire burned.


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