METHOD FOR MODIFYING CASTINGS IN LOST FOAM CASTING Russian patent published in 2017 - IPC B22C7/02 B22C9/04 

Abstract RU 2633806 C1

FIELD: technological processes.

SUBSTANCE: method comprises embedding of the modifier particles or alloying additives which are accelerated to a speed higher than 0.5 m/s into the pre-foamed expandable polystyrene raw beads. For the acceleration of particles, a gas flow is used which is supplied impulsely or continuously. Pre-foamed expandable polystyrene raw beads are placed in a box from a grid with cell sizes from 0.4 to 0.7 of the average bead size, and the box is filled by 0.5-0.9 of the volume.

EFFECT: improving the quality of castings due to the uniform distribution of modifiers and alloying additives in the model.

3 cl, 2 dwg, 1 ex

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RU 2 633 806 C1

Authors

Nesterov Nikolaj Vasilevich

Vorontsov Boris Sergeevich

Ermilov Aleksandr Germanovich

Dates

2017-10-18Published

2016-11-07Filed