How many kinds of drills are there? What drill shall we use to drill the iron? How about pig iron?
Drilling machine using electric power as power. Is the power tools in the conventional products, but also the largest demand for power tools products. 35% of China's power tools are produced and sold each year. The main specifications of electric drills are 4, 6, 8, 13, 16, 19, 23, 32, 38, 49mm, etc. the figures refer to the maximum diameter of the drill drilled on the steel whose tensile strength is 390N/mm2 (). For non-ferrous metals, plastics and other materials, the maximum drilling diameter is comparable to the original specifications of 30 to 50%.
Drill materials are usually high speed tool steel or carbide, but in the factory is often used high-speed steel, drilling, according to the different materials, with different speed, but also with coolant. Drilling a pig iron with a flashlight is not because it is difficult to drill, but because you are rotating too fast, try to slow down the speed.
Drill materials are usually high speed tool steel or carbide, but in the factory is often used high-speed steel, drilling, according to the different materials, with different speed, but also with coolant. Drilling a pig iron with a flashlight is not because it is difficult to drill, but because you are rotating too fast, try to slow down the speed.
