DEVICE FOR DIFFUSION METALLISATION IN MEDIUM OF FUSIBLE LIQUID-METAL SOLUTIONS Russian patent published in 2014 - IPC C23C10/18 C23C2/04 

FIELD: process engineering.

SUBSTANCE: proposed device is intended for application of diffusion coatings on articles in the medium of fusible liquid-metal solutions with heat treatment of the material and can be used in machine building, etc. This device comprises heating chamber. Said chamber accommodates moving screen, vacuum line with shutoff valve, inert gas feed line with shutoff valve and transfer chamber. It accommodates the tight gate with drive, moving rod with articles being coated secured thereat, lateral surface of said chamber being furnished with loading hatch. Vacuum line with shutoff valve is arranged at gate chamber and connected via pipeline inert gas circulation system including heat exchanger and blower with inert gas feed line with shutoff valve arranged at gate chamber upper part. Heating chamber is composed of a hollow bottomless cylinder. Chamber lower part is arranged inside ceramic or graphite crucible below the level of fusible liquid-metal solution of sealing of heating chamber interior. Protective antioxidant ply is arranged on the surface of fusible liquid-metal solution on chamber outer side. Said crucible is arranged in heat insulating case accommodating the heaters. Salt melt containing 100% of BaCl₂ salt is used as said protective antioxidant ply.

EFFECT: higher efficiency, longer life.

2 cl, 1 dwg