High temperature-resistant anti-oxidant alloy steel for resistor and preparation method thereof

Abstract

The invention discloses high temperature-resistant anti-oxidant alloy steel for a resistor. The high temperature-resistant anti-oxidant alloy steel for the resistor comprises the following components in percentage by weight: 0.1 to 0.2 percent of C, 0.6 to 1.1 percent of Si, 4.2 to 8.6 percent of Mn, 16.8 to 22.4 percent of Cr, less than or equal to 0.04 percent of P, less than or equal to 0.04 percent of S, 0.02 to 0.08 percent of V, 0.05 to 0.15 percent of Nb, 0.02 to 0.06 percent of Pb, 3.2 to 4.6 percent of Al, 0.2 to 0.6 percent of Ti, 0.6 to 1.2 percent of Mo, 6.8 to 8.6 percent of Cu, 0.2 to 0.6 percent of Y, 4.5 to 8.5 percent of Ni, 0.12 to 0.24 percent of W, 0.02 to 0.08 percent of rare earth, and the balance of Fe and unavoidable impurities. The invention also discloses a preparation method for the high temperature-resistant anti-oxidant alloy steel for the resistor. The alloy steel for the resistor prepared by the preparation method has excellent high temperature-resistant anti-oxidant performance.

Description

technical field [0001] The invention relates to the technical field of alloy steel, in particular to an alloy steel for high temperature resistance and oxidation resistance resistance and a preparation method thereof. Background technique [0002] During the use of temperature sensors, the thermistor plays an important role, and the thermistor is a semiconductor resistor with temperature sensitivity. Once it exceeds a certain temperature, its resistance value increases almost It is a step-wise increase, which can protect the circuit when the current surge is too large and the temperature is too high. [0003] Under the working current, the generated heat and the dissipated heat reach a balance and the current can pass through normally. When the excessive current passes through, the component generates a large amount of heat and cannot be dissipated in time, resulting in a rapid rise in resistance, which limits the passage of large current, thereby causing To over-current pr...

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Problems solved by technology

[0003] Under the working current, the generated heat and the dissipated heat reach a balance and the current can pass through normally. When the excessive current passes through, the component generates a large amount of heat and cannot be dissipated in time, resulting in a rapid rise in resistance, which limits the passage of large current, thereby causing to over-current protection, but as society progresses, emerging el