Keresés

Keresési eredmények

• The Pressure Characteristics of the Released Gases from Sand Cores

  73-79

  Mádi Laura Johanna

  Budavári Imre

  Varga László

  Megtekintések száma:

  157

  The core packages used for the production of castings are generally made from cores of different quality (no- bake phenol, HB-phenol, and HB-furan) and resin quantity, to meet the various requirements for the casting. In our research, the effect of the amount of resin on the pressure of the gases evolved from the cores was investigated. Experiments have shown that increasing the amount of resin has a different effect on different binder systems.

• Investigation of the Granulometric and Mechanical Properties of Inorganic Used Sand

  302-308

  Dargai Viktória

  Varga László

  Megtekintések száma:

  175

  This paper examines the use of a modified inorganic binder in metal-alloy casting. The results of investigations regarding the effect of reusing the used sand multiple times without reclamation. The technological properties of silica sand with inorganic binders were presented, two different temperatures were applied to make the used sands. After lump crushing the inorganic used sand was recycled in order to make a new sand mixture. Our work was focused on the effect of multiple usage of inorganic used sands on the mechanical and granulometric properties prepared with modified inorganic binder.