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Requirements, Classification, and Characteristics of High-Resistance Electric Heating Alloys
2024-03-20
As the name suggests, electric heating alloys are mainly used in the manufacturing of electric heating elements. Their main requirements are:
As the name suggests, electric heating alloys are mainly used to manufacture electric heating elements, and their main requirements are:
(1) Large and uniform resistivity;
(2) Single-phase organization, with no sudden change in resistance within the operating temperature range;
(3) Good oxidation resistance at high temperatures;
(4) Able to withstand a large surface load;
(5) Small temperature coefficient of resistance;
(6) Good mechanical properties in both cold and hot states;
(7) Good high-temperature creep resistance;
(8) Strong corrosion resistance to certain media;
(9) Small linear (expansion) coefficient;
(10) Good weldability;
(11) High operating temperature and long lifespan ------- This is a comprehensive indicator.
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