Grey Iron has been the most widely used form of Cast Iron over many decades; however it still has an important part to play in today's engineering environment. Grey or Cast Iron is also known as Flake Graphite Iron. A micro structure of this material reveals that the graphite is in the form of flakes that run through the ferrite / pearlite matrix. This graphite structure offers very little ductility but the many benefits that this material has to offer are:
Cost
Grey Iron is the cheapest of the Iron range to manufacture.
Fluidity
Although this material has a low melting temperature it retains a high degree of fluidity in the molten condition. This allows complex Grey Iron casting shapes to be manufactured with thin wall sections.
Wear Properties
As a result of the material structure Grey Iron has excellent wear characteristics.
Machinability
Grey Iron is a superb material to machine. Although there are many forms of Grey Iron all will machine very easily. With the addition of various alloys the mechanical properties can be enhanced but the hardness figure on the highest grade will be below 275BHN.
Damping Properties
This material is the perfect choice for applications where damping properties is a priority.
Excellent Bearing Properties
The graphite within the structure of Grey Iron provides excellent lubrication properties.
Compressive Strength
Grey Iron has compressive strength comparable to low and medium alloy Carbon Steel.
Resistance to Deformation
Casting applications subject to deformation should be specified as Grey Iron.
Our main production equipment includes four sand casting production lines: one HEIDON FBOⅢ production line, one FDNX production line, one Z148 molding machine circular production line (1,200mm*800mm sand box), more than 50 Z148 and Z145 molding machines, 6 sets of 0.5t intermediate-frequency electric furnaces, 4 sets of 1.5t intermediate-frequency electric furnaces and 3 sets of sand treatment systems which belong to molding equipment, more than 20 core shooting machines, 12 sets of aftertreatment cleaning equipment, 1 set of surface treatment spraying production line, as well as more than 100 machining equipments including CNC lathes, milling machines, drilling machines, CNC machining centers and so on.
