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JFE开发出两种高加工性的高碳钢板。各向同性高碳冷轧板的r值各向异性(Δr)降到了0.06,并且具有良好的成形性和低温短时加热淬透性,用于传动部件的钢板成形时可避免尺寸精度下降。高扩孔性热轧高碳钢板(SC)采用热轧后的超急速冷却使碳化物弥散分布,具有良好的冲孔性和扩孔性,适用于增厚加工。
JFE has developed two high-carbon steel sheets with high workability. The r-value anisotropy (Δr) of isotropic high-carbon cold-rolled sheet has been reduced to 0.06, and good formability and short-term heating hardenability at low temperature, so that the dimensional accuracy can be avoided when the steel plate for the transmission member is formed. High hole expandability Hot-rolled high-carbon steel (SC) with rapid cooling after hot-rolled so that carbide dispersion, with good punching and hole expander, suitable for thickening processing.