| The new pattern Al-Ti-C grain refining alloys had been prepared by thermal explosion method using Ah Ti and C powder in aluminum liquid in this thesis. The 20 kg casting ingot of new pattern Al-Ti-C grain refiner alloys had been extruded and drawn out into Φ 9.5mm grain refiner alloy wire. And it had been used in 1235, 5052 and 8011 aluminum alloy product line on the practical manufacture conditions. And then we bring into the refining effect of industrial evaluation for the refining product. We studied the effects on some change of temperature in aluminum liquid and the time of whisking for the micro-structure and refining effect of new pattern Al-Ti-C grain refiner alloy in batch synthesis. The grain size of casting roll board and cool roll board and performance of mechanic were analyzed. The analyzed methods such as XRD, OM, SEM, EPMA were applied for the micro-structure and refining effect of new pattern Al-Ti-C grain refiner alloy. And the contrast was made with the import Al-Ti-B grain refiner.Experimental results showed that temperature in aluminum liquid and the time of whisking were two important technical parameters and directly influenced the refining effect of new pattern Al-Ti-C grain refiner alloy. The casting ingot had best refining effect when the temperature of aluminum liquid is 780℃, whisking 1520min after reaction. The size of fine TiC particle was from 0.5μm to 1.5μm. Al3Ti particle present block shape, which size was from 8μm to 20μm and distribution in the matrix of aluminum was uniform. We adopted the new pattern Al-Ti-C grain refiner alloy to refine the 1235, 5052, 8011 aluminum alloys ,then the grain size of those casting roll ingots got first rank .The chemic component and mechanical performance accorded with the national standard. The refining product counts up tol6975kg. Such as double nil foil, home foil, foil for beer wrap page, timber accorded with the national standard. All products were sailed to the users.
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