Why Martenstic microstructure? ; 85% of the abrasive producers in the world manufacture in martensitic structure. The remaining 15% is cast iron, stainless and bainitic structure. Martensitic structure is the most common form of production and it is the latest technology. High carbon steel balls are produced by adding extra carbon, manganese and silica into the raw material, melting them in an induction furnace at 1600 - 1650 ° C and cooling in water after atomization. After casting, the balls are annealed at a certain degree in annealing furnaces and poured into water to create a martensitic structure. Meanwhile, the hardness of the balls is around 63 HRC. Steel balls and grit in martensitic structure can be reduced from 63 HRC hardness to 40 HRC hardness in temper furnaces after the heat treatment they undergo. The main thing in sandblasting is that the hardness of the sandblasting balls and grit used should be at least 3 - 5 HRC harder than the sandblasted surface, so that the cleaning and roughness to be obtained on the surface can be faster and with the desired properties. Using balls of lower hardness than the hardness of the sandblasted surface extends the blasting time and cannot perform the desired cleaning. This situation causes an increase in labor and energy consumption in the sandblasting process. In the cost of the blasting process, the blasting material only constitutes 10-15% of it. The remaining 85-90% is labor and energy expenses. For this reason, the selection of suitable hardness and grain size material is of great importance in terms of process cost. Martensitic structure is a type of production that enables production at hardness values between 40 - 63 HRC. Our company's expert technical team will be happy to assist you.
Application Areas;
High carbon steel ball round metallic products for surface treatment is a very strong abrasive. Unlike low carbon steel shot, this product has a higher processing density and therefore provides faster operation. High carbon cast steel shot is used for cleaning steel surfaces, cast iron and cast steel product, descaling and rust removal, deburring and ball hammering - increases the tensile strength of metal products. It is widely used for roughening marble and granite surfaces.