Quenching Ability of Spray Quenching on the Inducdtion Hardening
1962 Volume 48 Issue 13 Pages 1674-1678
Details
1962 Volume 48 Issue 13 Pages 1674-1678
The hot junction of Pt-Pt. ERh couple was fixed at the centre of a 10mm Ag ball. After heating up to 800.. this ball was dropped into a spray of various quenching media and the cooling curves were plotted by oscillogram. From these data, the spray-quenching mechanism was considerd.
As the result, the next conclusions were summarized.
(1) The spray-quenching mechanism is similar to that of th conventional quenching essentially, but the cooling rate at the each stage of cooling curvebecomes larger. In particular, vaper-film-breaking temperature rises extremely.
(2) The quenching ability of oil emulsion was compared with that of water.
(3) The effect of the flow rate on the cooling curve in spray quenching was made clear,
