耕耘機具の摩耗に関する研究
(第3, 4報) ナタ爪の摩耗
1956 年 17 巻 3 号 p. 103-106
詳細
1956 年 17 巻 3 号 p. 103-106
In this investigation, we attemped to compare the wear amounts of the ordinary tine and the fiat knife tine (Nata Tsume) in the field equiped with two power tillers and studied on the wear of the fiat knife tines made from several kinds of the special steel by the wear test machine.
In the field test, the flat knife tine wore away considerably and after fifteen hours' running, the rate of wear of width reached about 55%, that is about 3.5 times as great as the ordinary tine, and it was not more used.
In the laboratory test by the wear test machine, it was not recognized the large difference of the wear amounts between the carbon steel and the special steel tines. It seems the wear amounts of the tines are varied with the shape rather than the hardness.
