Abstract
A simple and rapid method is proposed for sampling molten phosphor bronze in routine chemical analysis, where molten metal is dropped onto the exposed surface of a phosphor bronze block immersed in a basin filled with water. The resulting metal granules in the water are taken out, dried, sieved, and from 16 to 60 mesh grains are collected as analytical samples.
One gram contains ca. 800 granules, spherical and bright, without black oxide film on them. The proposed method is compared with the usual JIS method for the determination of Sn by the iodometric titration. The error due to segregation and mixing in the latter is eliminated in the proposed one. The time required for a sampling is 5 minutes.
The method has been applied also for copper, copper base alloys, white metal bearing alloys, and soft solders.
