Specialists in Aluminum Die Casting

Degassing – GBF/RGB (Shafts)

Efficient Degassing with GBF/RGB Shaft: A Key to Quality Aluminum Die Casting

In the aluminum die-casting industry, hydrogen gas trapped in molten aluminum is a common issue. If not removed, this gas causes porosity, reducing the strength and finish of the final product. One proven solution to this problem is the use of GBF/RGB degassing shafts.

What is GBF/RGB Degassing?

GBF (Gas Bubbling Flux) and RGB (Rotating Gas Bubbling) shafts are advanced tools used to remove dissolved hydrogen gas from molten aluminum. The shaft introduces an inert gas—such as nitrogen or argon—into the melt. As the gas bubbles rise, they carry hydrogen and impurities to the surface, which are then removed from the system.

Benefits of Using GBF/RGB Degassing

Using GBF/RGB shafts offers several advantages:

  • ✅ Improved casting quality – Less porosity means stronger and cleaner parts
  • ✅ Consistent results – Uniform degassing ensures stable production
  • ✅ Cost savings – Fewer rejects and better yield
  • ✅ Efficient hydrogen removal – Reaches deep into the molten metal 

Additionally, rotating shafts (RGB) enhance the contact between gas bubbles and metal, which increases degassing efficiency compared to static systems.

Why Degassing Matters in Die Casting

Effective degassing is crucial for industries that require:

  • High-performance aluminum parts
  • Excellent surface finish
  • Minimal defects in critical components 

For example, automotive and aerospace industries demand flawless quality, and degassing helps meet those expectations.

GBF/RGB Shaft Solutions by PT Wilisindomas Indahmakmur

At PT Wilisindomas Indahmakmur, we provide reliable GBF and RGB shaft systems to optimize your aluminum die-casting process. Our products are designed for:

  • Durability in high-temperature environments
  • Easy installation and maintenance
  • Compatibility with existing melting and holding furnaces

Degassing with GBF/RGB shafts is a simple yet powerful step toward better casting results. Not only does it remove hydrogen effectively, but it also improves productivity and product quality.

Ready to improve your die-casting process?
Contact PT Wilisindomas Indahmakmur today for professional degassing solutions that work.


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