PTC for Non-Ferrous Semi Continuous Casting and Direct chilled (DC) Casting

The PTC process stirs the metal during solidification thus refines macro and micro structure, improves formability, improves the quality of the end product and increases yield.

The PTC electrode over Hot-Top casting pit

As a result significant production cost savings in product quality improvement is achieved

Al billets after casting

Aluminum Alloys

PTC Advantages for Semi continues / DC casting of Aluminum alloys

The PTC Process has been tasted by several Aluminum cast houses .
Applying the PTC process on aluminum semi-continuous casting or direct chilled (DC) casting, have several benefits; the most important one is the possibility to shorten or even eliminate the need for homogenization treatment after casting.
Using the PTC process to stir the molten metal during the solidification will result in dissolving large amount of the alloying elements into the Aluminium matrix and gaining much finer grain boundary phase. That will result in a much shorter homogenization time, or even eliminating the need for homogenization at all.
The PTC process can be used on all aluminum alloys. PTC system can be assembled on any existing casting line.

Copper Alloys

PTC advantages for Semi Continuous casting of Copper alloys

The PTC Process has been tasted by several Copper alloy cast houses and semi product manufacturers during semi continuous casting.
All manufacturers confirmed the benefits and efficiency of the PTC stirring effect during copper solidification semi continuous casting.
Using the PTC process to stir the molten metal during the solidification significant reduces the grain size by 80-90 %( 5-10 times less) and quality improvement. The fine grain structure improves formability and has a grate advantage for following thermo mechanical deformation processes as forging, extrusion, etc. in terms of thermo mechanical process the PTC reduces process time, increase yield and reduces defect ratio. Cost saving and quality improvement of the final product.
The PTC process can be used on all copper alloys. PTC system can be assembled on any existing casting lines.

Magnesium Alloys

PTC advantages for Semi Continuous casting of Magnesium alloys

The PTC process was tested in casting Mg(Al, Zn) billets. The aim was to reduce the grain size in order to have better formability in forging. The P_TC reduced the grain size by 40% with finer DAS.