KPR-603 Titanium-Boron refiner is a new type ￠40X85 cylinder flux which is dried and mixed with high-activity metal powder and special flux. It can effectively refine the grains of aluminum and aluminum alloy. KPR-603 titanium-boron refiner can be compared with aluminum-titanium-boron wire with its excellent refining effect, and is much superior to aluminum-titanium intermediate alloy. It is an economical grain refiner for most aluminum alloys. Its scientifically optimized composition ratio enables the casting to obtain finer equiaxed crystals, and can eliminate feather crystals and columnar crystals, provides a good internal structure for future processing, effectively overcomes casting cracks, improves the appearance of castings, and reduces the cold separation of castings. Due to the refinement of the heterogeneous grains, the air holes and porosity can be effectively reduced at the same time, and the ductibility of the castings, the ingots and the cast rods can be remarkably improved.