Hebei Yogem Castings Co., Ltd

  Ductile Iron Casting Pump Housing The graphite in the gray iron casting organization is in the form of flakes, and the graphite in the ductile iron casting organization is in the form of spheres.   Organizational differences lead to huge differences in their performance Gray iron casting has high brittleness and good vibration damping performance. It is mainly used to produce a variety of bases with low strength requirements and mainly bear compressive stress.   The ductile iron casting has a high strength, which is comparable to medium carbon steel. And it has a certain degree of plasticity and good toughness. It is often used to make some workpieces with high toughness requirements and complex shapes. Ductile iron casting generally can be strengthened by heat treatment, while gray iron casting generally cannot be strengthened by heat treatment.     Compared with gray iron casting, ductile iron casting has an absolute advantage in strength. The tensile strength of ductile iron casti

As a  supplier of OEM castings , I will introduce it to you. Casting made of ductile iron is called ductile iron casting. Because of its good strength and toughness, it is widely used. However, we often hear a kind of casting called "gray iron casting". Some people who are not very proficient in casting can easily confuse the two and can't tell which one is. As a supplier of iron castings, I will introduce to you the difference between gray iron casting and ductile iron casting and how to distinguish them.   Gray Iron Casting Motor Housing

  Grey Cast Iron Casting Use carbon arc gouging, gas welding flame, grinder slotting, and thoroughly remove defects. Commercially available gray cast iron welding wire: HS401, and CJ201 for flux can be used as the welding wire. In order to better eliminate defects such as pores and slag inclusions, a larger flame energy rate should be selected. In general, when the thickness of the casting is 20-50mm, the nozzle diameter is 3mm and the oxygen pressure is 0.6MPa; when the thickness of the casting is less than 20mm, the nozzle diameter is 2mm and the oxygen pressure is 0.4MPa. Welding operation Gray cast iron gas welding adopts neutral flame or slight carbonized flame, and the carbonized flame can be used at the end of welding to slow down the welding seam. This can reduce the burning loss of C and Si, eliminate the excessively thick oxide film, and reduce the cooling rate to prevent white mouth tissue. For some small defects at the edges, corners and edges of the casting, cold welding c