Product Application:
Salt cores, when flushed out of the piston, form internal cooling passages, reducing the temperature of the piston
head and the first ring groove area, thus enhancing the piston's lifespan.
Features:
1. High Strength, Excellent High-Temperature Resistance: Salt cores do not fracture when preheated in a 720°C
furnace or during piston casting operations.
2. Immersion Resistance: Salt cores do not rupture or generate gas when poured with aluminum solution, nor do
they cause salt to float on the solution's surface.
3. Easy Dissolution, Quick Flushing: After casting into the piston blank, salt cores can be completely flushed out
within a maximum of 10 seconds under a water pressure of 200 bar.
4. Surface Quality: Salt cores exhibit no quality defects on the surface, such as cracks, sharp edges, burrs, notches,
oil stains, etc., with smooth arc transitions.
In modern internal combustion engines, pistons inevitably bear increasing thermal loads. Particularly with the
increasing use of turbocharged engines in mid-to-high-end vehicles worldwide, turbocharging technology has
become popular to enhance engine power and torque, improve fuel economy, reduce exhaust emissions, and
lower fuel consumption. To meet the growing power requirements and ensure the safety of piston operation,
pistons with internal cooling passages, formed by salt cores during the aluminum piston casting process and
then removed by water flushing after casting, have become the inevitable choice for high-speed, high-power
engines.
