In the selection of domestic electric heating alloy wire, it often lingers in the nickel-chromium wire and iron-chromium-aluminum wire. According to the inherent characteristics of the equipment, whether the electric heating alloy wire is used for corrosion resistance or oxidation resistance and high temperature strength. Then match the selection. In this section, the selection of nickel-chromium wire will be described. 2080 nickel-chromium wire is the top choice among domestic heating wires.
There are many kinds of nickel-chromium wires, which are calculated as the percentage of nickel content. The higher the percentage of nickel content, the better the quality of the heating wire. Nickel-chromium wire has good oxidation resistance. It is not brittle under high temperature, and it is not easy to break. The most commonly used is 2520 (Cr25Ni20). The content means: 25 means 25% chromium, 20% nickel, and the rest are iron; 2080 (Cr20Ni80) 20 means 20% chromium, 80 means 80% nickel, and the rest are iron.
Main advantages and disadvantages of nickel-chromium electric heating alloy series:
Advantages: high-temperature strength is higher than iron-chromium-aluminum, it is not easy to deform under high-temperature use, its structure is not easy to change, its plasticity is better, it is easy to repair, its emissivity is high, non-magnetic, strong corrosion resistance, long service life, etc.
Disadvantages: Due to the use of rarer nickel metal materials, the price of this series of products is up to several times higher than that of iron-chromium-aluminum, and the use temperature is lower than that of iron-chromium-aluminum. The main chemical components of nickel-chromium wire are nickel and chromium, and the shape is filamentous, so it is called nickel-chromium wire. Nickel-chromium wire is also called nickel-chromium element wire.
Nickel-chromium wire can be divided into nickel-chromium round wire and nickel-chromium flat wire according to the cross-sectional shape.
The grades of nickel-chromium wire are: Cr20Ni80, Cr15Ni60, Cr20Ni35, Cr20Ni30, cr25ni20.
It can be widely used in metallurgy, household appliances, machinery manufacturing, etc. as heating elements and as resistance materials in the electrical industry. If the customer has higher requirements for the heating wire, you can choose the original Swedish KANTHAL heating wire, which is better than domestic in terms of high temperature resistance and other properties.
