Abstract
The temperature of the quenching specimen is recorded on photographic paper by means of the oscillograph placed in the circuit of a thermo-couple inserted into the specimen. The results are given for the quenching ability of water, soybean oil and air at various temperature.
From the results, water is superior in quenching ability to other kinds of media such as soybean oil and air. The quenching ability of water is more than four times that of soybean oil and forty times more than air.
