Ⅰ. Current situation:
At present, when producing 5182 aluminum alloy and 5 series alloy flat ingots in the melting and casting workshop, aluminum titanium boron wire has been used. However, after long-term data collection, it was found that the use of aluminum titanium boron will cause wrinkle defects due to the increase of B element content, resulting in an increase in the amount of milled surface.
Ⅱ. Test method:
There are two casting batches of 5182 aluminum alloy pulling ring material. The 4H114 casting batch uses Qinhuangdao Fengyue S&T aluminum titanium carbon - AlTi5C0.2, according to the current addition process volume 1.2kg / MT. The 4G811 casting batch uses imported AlTi5B0.2, and the addition amount is still 1.2kg / MT for comparison.
Ⅲ. Test result:
1. Appearance result
a) Using aluminum, titanium, and boron wire：
b) Using aluminum, titanium, and carbon wire
2. Chemical components: (Please contact us for more details)
3. Grain size: (Please contact us for more details)
4. Shrinkage porosity in high magnification and its maximum size: (Please contact us for more details)
Ⅳ. Conclusion of using AlTi5C0.2:
1. Appearance conclusion
Through the appearance comparison, it was found that the appearance of wrinkles was significantly improved, and the number and depth of the wrinkles decreased.
2. Chemical component
The content of B is reduced. The content of Ti is different due to the different amount of grain refiner wire added, analyzed according to the increasing value, which is not in line with the theoretical calculation value of titanium wire addition.
3. Grain size
The grain sizes by low magnification are all grade 1, which meets the internal control requirements. The grain sizes by high significance are different at different parts. The flat ingot added with titanium boron aluminum wire has smaller grain size on the edge and quarter than the flat ingot added with titanium carbon aluminum wire. About the grain size in the central part, the flat ingot with titanium carbon aluminum wire is smaller than the flat ingot with titanium boron aluminum wire.
4. Shrinkage porosity in high magnification and its maximum size
From the analysis of shrinkage porosity by high magnification, the shrinkage porosity size of the flat ingot added with titanium carbon aluminum wire is better than that of the flat ingot added with titanium boron aluminum wire. But the shrinkage porosity level is greater than that of the flat ingot added with titanium boron aluminum wire. About the largest grain size, the flat ingot added with titanium carbon aluminum wire is greater than the flat ingot added with titanium boron aluminum wire.
In short, through the comparison of the current data, it is found that the grain refinement effect of the titanium carbon aluminum wire test is basically the same as that of the imported titanium boron aluminum wire. And the appearance wrinkle elimination is superior to the titanium boron aluminum wire. However, due to the limited data, the conclusion may not be very accurate. And afterwards, the experiment can be increased for comparison and summary.