Aluminum-titanium-boron wire is currently recognized as the best grain refiner for aluminum and aluminum alloys. It can prevent the formation of coarse equiaxed grains, columnar grains, and feather-like grains, significantly improving the mechanical and physical properties of aluminum and aluminum alloys. It can be widely used in the field of aluminum and aluminum alloy components with high internal structural requirements. Its advantages can be summarized as follows:

It can effectively refine the grain size of castings, which is beneficial for shrinkage compensation and improving the internal and surface quality of castings.

Reduce thermal stress caused by solidification shrinkage, minimize hot cracking, and minimize the wall thickness effect.

With a low melting point, it can be directly added online to prevent the formation of oxide-based hydrogen absorption.

Easy to use and environmentally friendly.

By subjecting the aluminum-titanium-boron alloy to severe deformation (kneading and extrusion), the morphology and size of Al3Ti and TiB2 in the alloy are altered, preventing agglomeration and sedimentation. This enhances the grain refinement capability of the aluminum-titanium-boron wire, ensuring that the refinement effect does not decline, and enabling the online addition of the aluminum-titanium-boron wire.

Comparison diagram of metallographic structure of aluminum-titanium-boron wire

Piston grain comparison diagram

The addition of aluminum-titanium-boron wire to piston materials can effectively improve the internal quality of pistons and enhance the comprehensive mechanical properties of the piston materials. In particular, the room temperature fatigue strength can be increased by 13.2% (data from Bohai Pistons), thereby enhancing market competitiveness. It is recommended to add this material to piston products for passenger cars and medium and heavy-duty diesel engines.