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零件材料:S15C(相当于15钢),软化退火的φ60热轧棒料,硬度HRB68,坯料见图1(340克重)。成型法:局部正挤压。
Parts Material: S15C (equivalent to 15 steel), softening annealed φ60 hot-rolled bar, hardness HRB68, shown in Figure 1 blank (340 grams). Forming method: Local positive extrusion.