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- W2564805540 abstract "Investigations of various steels show [ I 5] that the structure plays a determining role in their abrasion resistance. Specimens with various structures were prepared by oil quenching from 800°C and subsequent tempering for 2 h in the temperature range 1 0 0 700°C and by isothermal treatment of supercooled austenite at t, h = 250 700°C. In order to investigate the effect o f cold plastic deformation on the wear resistance some specimens with a structure of flake pearlite were rolled in a DUO-180 mill. Wear tests under friction against fastened abrasive particles were conducted with the use o f a 11~ 625 × 100 P2 25A 8-P MA abrasive cloth (GOST 6456-75). The grain size in the matrix structure o f the abrasive (white electrocorundum) was 80-100 ~m. The trajectory of the motion o f the specimen relative to a disk with an abrasive cloth fastened to it had the shape of an Archimedean spiral. The disk rotated at 650 rpm with the specimen being displaced by 0.15 mm in the radial direction per revolution o f the disk. The specimens had a size o f the working surface o f 3 x 10 mm and were pressed to the abrasive cloth with a force of 2 N. The friction path in the test of each specimen was 50 m. In order to evaluate the wear in the steel under conditions of nonrigidly fastened abrasive particles we used an experimental installation. A flat specimen was pressed to a rubber roll 50 mm in diameter with a force of 30 N. Quartz sand with a mean particle size o f 0.37 mm was drawn over the surface of the specimen with the help of the roll. The wear time was 3 min. The loss of mass in the specimen was determined by weighing it on a VLR-200 scale. Figure I presents results o f wear tests o f steel U8. The curves in Fig. I a, b behave quite similarly. As the hardness of the specimens increases, the wear rate o f the steel decreases independently of its structure (the method o f heat treatment). A comparative analysis o f curves 1 and 2 shows that at a" @default.
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- W2564805540 date "1996-01-01" @default.
- W2564805540 modified "2023-09-24" @default.
- W2564805540 title "EFFECT OF THE FERRITE-CEMENTIT E ON THE RATE OF ABRASION WEAR IN STRUCTURE STEEL" @default.
- W2564805540 hasPublicationYear "1996" @default.
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