Металлическое литье в песчаные формы Железный стальной литейное оборудование для магнезитовый кирпич песка AFS45-55 класс

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Характеристики


Brief production of metal casting sand iron steel foundry chromite sand AFS45-55 grade


 


Chromite sand foundry, Originally from South Africa (SAMANCOR),is a special kind of sand for casting , chromite sand is a natural spinel mainly composed of chromite ,


 


Chromite sand foundry used as a highly fireproof sharpener for moulds and cores.


Chrome ore sand,It’s main chemical composition is Cr2O3, This kind of sand heating volume is stable , High thermal conductivity , sand molten metal contact , not only has a good  alkali slag resistance , not with iron oxide and other chemical reaction , and itself has the characteristics of solid phase sintering , can well prevent the penetration of molten metal , avoid sand defects .


 
































































































Chemical  Properties



Item



Index %



Cr2O3



46.0min



SiO2



1.0max



FeO



26.5max



CaO



0.30max



MgO



10.0max



Al2O3



15.5max



P



0.003max



S



0.003max



Cr/Fe



1.55 / 1



Physical  Properties



Bulk Density



2.5-3 g/cm3



Color



Black



PH



7-9



The amount of the acid



2ML(MAX)



Percent Soil



0.1% max



Percent Moisture



0.1% max



The Sintered Point



1600 C



Filling Density



2.6 g/cm3



Sintering Point



1800 C min



Melting Temperature



2180 C



Percentage of Free Acid Present in the Sand



0



 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


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SIZE OF Chromite sand foundry


Available Size: AFS35-40, AFS40-45, AFS45-50, AFS50-55, AFS55-60, AFS60-65


SIZE FOR chrome oxide colorant :  325F  400F


 


Application of Chromite sand foundry


Chromite sand foundry is used as a highly fireproof sharpener for moulds and cores.


Chromite sand foundry is suitable for all kinds of molding (core-making ) sand, stainless steel , Alloy steel and carbon steel gradually modeling core sand and paint . 


Chromite sand 325F 400F is well used as glass colorant


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0.014 s.