在生产中,我们碰到一批长400毫米、宽20毫米,厚0.6毫米的65Mn弹簧片,要求硬度为HRC48～52,采用普通淬火方法因变形大而报废。后来我们采用以下方法淬火达到了技术要求。用一份100目石墨粉加一份20号机油调成糊状,涂在零件表面 In production, we encountered a number of long 400 mm, width 20 mm, thickness 0.6 mm 65Mn spring piece, the required hardness HRC48 ~ 52, using ordinary quenching methods due to large deformation and scrapped. Later, we use the following method to achieve the technical requirements of quenching. Use a 100 mesh graphite powder plus a 20 # oil into a paste, painted parts surface