微粒といし結合度試験法としてロックウェルかたさ計を利用することの吟味

概要

論文の詳細を見る
In the application Rockwell hardness tester for measuring the grade of fine-grain abrasive stone, the measuring errors under the various testing conditions, and the deformations occured within the abrasive stone have been investigated. The results of the investigations are as follows : (1) The standard deviation in the distribution of measuring errors is a function of the ratio of the mean pressure p to the depth of depression h, i.e. dp/dh, and the range of error is comparatively large for H-scale which is frequently applied for determining the grade of fine-grain abrasive stone and has small dp/dh. (2) Though the magnitude of loading time influences the reading of grade, the influence of the loading velocity on the reading is not so much. (3) The smaller the standard loads, the greater the grade-readings. (4) The porosity widely influences the grade-readings.
一般社団法人日本機械学会の論文
1956-06-25