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气门摇臂轴结构如图1所示。它的热处理要求是:淬火范围从φ4孔的中心分向两边各15mm 长,共八段,硬度为 HRC≥50,淬火层深度1.5~2.5mm,弯曲变形不大于0.25mm,材质45钢。热处理时如采用分段加热淬火,淬火区不好保证,而且工效低,且各段质量不一致。为提高工效和保证质量,我们将淬火机床进行改进,使之能自动进行八区段淬火。在三年多
Valve rocker shaft structure shown in Figure 1. Its heat treatment requirements are: Quenching range from the center of φ4 hole on both sides of the 15mm long, a total of eight sections, hardness HRC ≥ 50, quenching depth 1.5 ~ 2.5mm, bending deformation of not more than 0.25mm, material 45 steel. Heat treatment, such as the use of sub-heating quenching, quenching zone is not guaranteed, and low efficiency, and the quality of the inconsistencies. In order to improve work efficiency and ensure quality, we will improve the quenching machine so that it can automatically quench eight sections. In more than three years