High Pressure Mill is generally used in the manufacture of complex shape, high mechanical performance requirements than the cast iron parts, such as hydraulic press beams, rolling mill frame, heavy gear, etc., this method is difficult to produce parts with forged, cast iron can not meet performance requirements can only be used with carbon steel casting production. High Pressure Mill cast iron has excellent casting properties, machinability, antifriction and eliminate vibration and low notch sensitivity, and iron smelting technology and equipment is simple and low cost. Cast iron is still the most important industrial production of engineering materials.

Gray cast iron from the metal flake graphite matrix and two-part. The matrix can be divided into pearlite, pearlite + ferrite, ferrite three. The performance of gray cast iron mechanical properties of gray cast iron depends on the matrix form of organization and manganese powder the existence of graphite, gray cast iron contains more silicon than steel, manganese and other elements that can be dissolved leaving the ferrite matrix reinforced Therefore, the matrix strength and hardness of not less than the corresponding steel. However, flake graphite strength, ductility, toughness is almost zero, nickel powder so the cast iron tensile strength, ductility, toughness lower than steel. The more the number of graphite, the more bulky size, the more uneven distribution, the tensile strength of cast iron and plastic lower. The compressive strength of gray cast iron, hardness and wear resistance, because there is little effect of graphite, it is better compressive strength of gray cast iron. In order to improve the mechanical properties of gray cast iron, the production is often used inoculation. It is in the casting solution by adding a small amount of iron to the inoculant, the solidification of molten iron in a large amount of artificial nuclei, resulting in fine grain pearlite matrix with fine flake graphite evenly distributed organization.

After inoculation of cast iron after the birth as iron. Bred cast iron with high strength and hardness, with a small cross-section notch sensitivity characteristics, so often conceived as the mechanical properties of cast iron are higher, and the large variation in section size castings, boron powder such as the machine bed and so on. Gray cast iron has a good casting properties, machinability, antifriction, and eliminate vibration resistance, cast iron is less sensitive to the gap. The chemical composition of high-pressure mill, compared with gray cast iron, which is characterized by carbon, silicon mass fraction, whereas the lower mass fraction of manganese, sulfur and phosphorus on the more stringent restrictions, and a certain amount of magnesium.

High tissue mill in the steel substrate on the distribution of spherical graphite. High Pressure Grinding machine cast, its base is a different number of ferrite, pearlite, cementite exist even mix of the organization, silicon powder it is subject to the production of different heat treatment for different organizations. Often the production of high-pressure mill ferrite, pearlite + ferrite high mill, pearlite, bainite under high pressure and high pressure milling machine milling machine.

High performance milling machine milling machine as high-pressure spherical graphite, metal powder supplier matrix separated the role of small, high-pressure mill tensile strength, ductility and toughness, fatigue strength than other cast iron, high mill There is a prominent advantage is its relatively high yield strength, the static load for bear parts, can be replaced by high-pressure steel mill. Source:www.mhcmp.com