what is the cutting speed for mild steel
Speeds and feeds Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100Â ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation. The cutting conditions will affect the value of this surface speed for mild steel.
Monster Energy NASCAR Cup Series Race speeds vary widely depending on the track. The fastest track is Talladega Superspeedway, where the record average speed is 188.354 mph (303.126 km/h) and the record qualifying lap is 212.809 mph (342.483 km/h), set by Bill Elliott in 1987. The record stands unlikely to be broken, as restrictor plates were made mandatory at superspeedways in 1988 to reduce speeds.[47] The slowest tracks are Sonoma Raceway, a road course with a record average speed of only 83.6 mph (134.5 km/h) and a record qualifying lap of 99.3 mph (159.8 km/h), and Martinsville Speedway, a short, nearly flat "paper clip" oval, with a record average speed of 82.2 mph (132.3 km/h) and a record qualifying lap of 99.9 mph (160.8 km/h). The average speed of a race is determined by dividing the winner's race time (from the waving of the green flag to the waving of the checkered flag, including laps spent under caution) by the distance of the race. Time elapsed during red flag periods is not included in the calculation of the average speed.