Abstract
The abrasion of line pipes by sands is a serious problem.In this report 29 steels including low alloy steels, tool steels and austenitic stainless steel, were tested by the machine designed in our laboratories, which had four rotating arms with four test pieces mounted. Because of the scattering of abrasion losses, it was difficult to judge the results, but the introduction of statistical method, Youden squares, made it possible to. distinguish the small differences between the effects of microstructures and alloying compositions with certain. reliability.
The results are as follows:
(1) The abrasion loss decreases with increasing hardness under the same condition of microstructures.
(2) The results depend definitely on the microstructures of steels with the same hardness.Ferrite pearlite structure shows the best result.
(3) Under the same conditions except composition, carbon and chromium improve the abrasion resistance.
