Why not use the shell of motor iron wrought iron
Determine the performance of pig iron wrought iron: not wrought iron is rarely used as a structural material, this is because of its soft texture, high strength. Cast iron in carbon flake graphite form exists, its fracture is gray, usually known as gray iron. Because of its soft and lubricated graphite, casting pig iron has good cutting, wear resistance and casting properties. But its resistance to strength is not enough, it can not be forged, and can only be used to make a variety of castings, such as casting all kinds of machine tools, bed seats, iron pipes and so on. Ductile iron to carbon in the form of spherical graphite, which is far better than the mechanical properties of gray cast iron and close to steel, it has excellent casting, machining and wear resistance, has a certain flexibility, widely used in the manufacture of gear, crankshaft, piston and a variety of advanced casting machine parts.
Pig iron is generally referred to as an alloy of iron containing carbon in 2-6.69%. Also called cast iron. In addition to containing carbon, pig iron also contains silicon, manganese and a small amount of sulfur, phosphorus and so on, it can be cast can not be forged. Pig iron contains a lot of carbon, hard, wear-resistant and casting good, but the texture is hard and brittle, almost no plastic, can not forge. According to the different form of carbon in pig iron, it can be divided into several kinds, such as steelmaking pig iron, casting pig iron and nodular cast iron.Cooked iron is very soft, good plasticity, good ductility, easy deformation, can pull into a wire, the strength and hardness is low, easy forging and welding, not widely used. The use of pure iron is mainly used as electrical materials, with high permeability, can be used for a variety of iron core. Also used as raw material for high-grade alloy steel.
The price factor decided to use iron wrought iron wrought iron is: not pure iron with refined iron. The carbon content below 0.02%, also known as iron, iron. Iron requirements of carbon, phosphorus and sulfur impurities content is very low, the smelting difficulty, the manufacturing cost is far greater than the iron and steel, so the selection of pig iron, if required, use steel than with wrought iron economy, so the motor shell with no iron wrought iron.
