tire-pavement noise generally originates from three sources: 1) the friction noise produced by the tire sliding on pavements; 2) the impact vibration noise of tire rubber; 3) the air-pumping noise generated when the trapped air at the tire-pavement interface is being compressed and pumped out...
was melted completely in a direct-type electric furnace. The temperature of the melted mixture was about 1500° C. measured with an optical pyrometer. While the molten product flowed from the furnace, the product was quenched by applying compressed air at a pressure of 5 Kg/cm2to the ...