Product: High Speed Steel Guillotine Knives For MetalMaterial: HSS,Website:http://www.chinabettool.com, High Speed Steel, other materialsType: Standard, Non-standardProduct Description:The guillotine knives are used to cut some metal foil, such as copper foil, aluminum foil and so on, because the knife edge is sharp, so it is just suitable for thin metal foil, if the metal thickness is too thick, it will cause to crack on the knife edge.After the heat treatment, the knife will be grinded, processing holes and inspection will be done.The heat treatment is very important, we have very professional person to do it, if heat treatment is not good, it will cause to low hardness of knives, the service knife will be not good, or the knives edge are easy to crack.