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The filtering element for FES steel

The filtering element for FES steel

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Belarus, Minsk
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Description
The high-fire-resistant filter for an intra uniform filtration of metal of castings from high-carbonaceous and manganic brands of filling, staly with temperatures, no more than 1680 ºС. Effectively reduce the content of nonmetallic inclusions (slags, grains of sand, products of an erosion of forms, films, etc. impurity). Capacity of one filter - no more than 100 kg. fusion.

SCIENTIFIC BASES of EFFICIENCY: The special structure of a fire-resistant covering gives to a glass grid the additional refining ability, thermal and chemical firmness. Use of the FES foundry filters with a special covering provides a qualitative filtration of fusion and high mechanical properties of steel castings thanks to the following mechanisms of influence:

  • thin cut-off of slag inclusions and gases on all mechanisms of effective filtering: on mechanical (detention of nonmetallic particles an elementary cell of the filter), net kegovomu (detention of inclusions by slag flat cake from the stitched party of the filter, including particles of considerably smaller sizes), adhesive (adsorption of not dissolved particles on a filter surface), subspoon (adsorption on a surface of the filter of the dissolved impurity) and gas-blowing-off (fusion refinement by a purge inert gases, allocated from impregnating structure of the filter when heating)
  • modifying of structure of steel (crushing and alignment in various sections) as a result of saturation of fusion by the effective centers of crystallization and the alloying elements from impregnating structure of the filter
  • creation of the protective atmosphere of inert gases and input of qualitative ogneupor in impregnating structure guarantees high thermal and chemical firmness of structure of the filter during the whole time of filling
  • formation of a laminar stream of metal behind the filter promotes quiet filling of a casting mold, at the same time the probability of an erosion of a cavity of a form, and also probability of formation of new impurity as a result of repeated oxidation of the melted metal in shape decreases

EFFECT OF APPLICATION:

  • sharp decrease in number of the marriage of steel castings connected with presence of nonmetallic inclusions, oxidic captivity and gases
  • simplification and considerable decrease in metal consumption of litnikovy systems thanks to an exception of slag catchers and throttles in the litnikovy courses
  • optimization of speed of molding, prevention of destruction of forms, improvement of a surface and quality of castings
  • increase of mechanical properties of cast structure and achievement of the best density of castings.

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The filtering element for FES steel
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