Brake discs excellent in resistance to temper softening and toughness
A brake disc, excellent technology, applied in the direction of brake discs, brake types, brake components, etc., can solve the problems of high cost, reduced hardness, expensive manufacturing cost of brake discs, etc., and achieve high temper softening resistance, Excellent temper softening resistance and toughness
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[0105] Molten steel with the composition shown in Table 1 was melted in a high frequency melting furnace (high frequency melting furnace), and cast into steel raw materials. Next, these steel raw materials were made into a hot-rolled steel plate (plate thickness: 5 mm) by normal hot rolling. Further, these hot-rolled steel sheets were subjected to hot-rolled sheet annealing at 800° C. for 8 hours (reducing gas (reducing gas) atmosphere, heating followed by gradual cooling). Next, these hot-rolled steel sheets are subjected to pickling treatment to remove scale on the surface, thereby producing raw materials for brake discs.
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