Locomotive braking resistance tape and preparation method thereof

Abstract

The invention relates to a locomotive braking resistance belt and a preparation method thereof. The resistance belt comprises the following main components in percentage by weight: 13.5-14.5 percent of chromium, 3.5-4.5 percent of aluminum, 0.25-0.35 percent of titanium, less than or equal to 0.04 percent of carbon, 0.05-0.10 percent of rare earth and the balance of iron. The preparation method of the resistance belt sequentially comprises the following steps of: performing vacuum melting, electroslag remelting, hammering, hot rolling, annealing heat treatment, acid washing, grinding and trimming, cold rolling, gas protected annealing, stripping and forming. The locomotive braking resistance belt disclosed by the invention is ferrite alloy, and metal nickel is not used, so that the production cost can be greatly reduced. The titanium element is adopted, so that the resistance uniformity of the resistance belt can be improved, meanwhile, the resistance temperature coefficient of the resistance belt can be reduced, and further, the product quality can be improved. The preparation method comprises a vacuum melting process, so that air content in the generated resistance belt can be less, and the purity of a product is guaranteed.

Description

technical field [0001] The invention relates to an alloy and a manufacturing process thereof, in particular to a locomotive brake resistance band and a preparation method thereof. Background technique [0002] Resistance braking devices are used on electric transmission diesel locomotives on railway trunk lines, because the locomotives are powered by diesel engines, connected to the main generator through elastic couplings, and the electricity generated by the electric control cabinet provides power for the traction motors on the locomotive wheels. Power supply; the traction motor is transmitted through the driving gear to the driven gear on the wheel set to drive the wheel train to run, and the whole process is the transfer process of mechanical energy-electrical energy-mechanical energy. When the locomotive is braking, because the rotor speed of the traction motor is higher than the speed of the stator's rotating magnetic field, the traction motor changes from the state of...

AI Technical Summary

Problems solved by technology

For example: the commonly used brand N40 resistance alloy for locomotive braking in the market, its main composition and content are: Ni: 34.0-37.0%, Cr: 18.0-21.0%, Si: 1.0-3.0%, C≤ 0.10%, Mn≤1.00%, Al≤0.05%, Fe: the balance, but due to the high content of nickel, its price is too high; there is also a stainless steel plate with a grade of 310S, whose main components are: Ni: 19.0-22.0%, Cr: 24.0-26.0%, Si: ≤1.5%, C≤0.08%, Mn≤2.00%, Fe: balance, although it reduces the usage of Ni, the overall cost is still high, and The resistivity is only 0.95uQ m, which is not suitable as a resistance band for locomotive brakes

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