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Качество закалки с индукционным нагревом распредвала

Качество закалки с индукционным нагревом распредвала

After the 8 cams are cooled by induction heating and immersion, the depth and quenching hardness of the hardened layer are shown in Table 3 . It can be seen from Table 3 that both indicators meet the technical requirements of the product map. It can be seen from the cross-sectional view of the quenched part of the cam that the hardened layer is uniform and the position is correct.
Table 3 Camshaft quenching hardness and depth of hardened layer

Cam number Твердость закалки HRC Глубина упрочняющего слоя / мм
Чаевые Базовый круг
1 51 53.5 55 7.8 5.7
2 52 54 54 7.2 6.0
3 55 55.5 53 10.0 6.5
4 53 53 56 7.5 6.4
5 50 51 52.5 9.6 7.3
6 56 55 56 10.3 7.5
7 54 52 54 10.8 7.7
8 52 50 52 9.5 7.0

After the camshaft is quenched, the increased value of radial runout is tested to be 0.15mm , which can meet the requirements of the next process without straightening. The temperature of the quenching medium is in the range of 10°C-40°C , and the quenched cam has no quenching cracks through fluorescent inspection.

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