薛正学, 郑亚旭, 姜方, et al. Control of the Surface Quality of As-Cast Ingot and Ti Loss during Drawing-Ingot- Type Electroslag Rapid Remelting of Alloy 825[J]. Special Steel, 2016, 37(4): 37-40.
薛正学, 郑亚旭, 姜方, et al. Control of the Surface Quality of As-Cast Ingot and Ti Loss during Drawing-Ingot- Type Electroslag Rapid Remelting of Alloy 825[J]. Special Steel, 2016, 37(4): 37-40.DOI:
The 325 mm x 280 mm electrode of superalloy 825 ( /%:
<
0. 01C
0. 21 Si
0. 40Mn
0. 020P
0. 003S
22. 5Cr
39. INi
3. 0Mo
2. ICu
1. 17Ti
0. 17Al) is remelted by protective gas drawing-type electroslag rapidremelting to 160 mm x 160 mm 1. 8 t ingot. Effect of adding TiO
2
TiO
2
-MgO or TiO
2
-SiO
2
in base slag CaF
2
-CaO-Al
2
O
3
and remelting rate (300 ~500 kg/h) on the surface quality and Ti loss of alloy 825 remelted ingot is tested and studied. Results show that by quinary slag series CaF
2
-CaO-Al
2
O
3
-TiO
2
-SiO
2
adding small amount SiO
2
with remelting rate 400 k/h
the surface quality of electro-slag remelting ingot of alloy 825 improves obviously while the Ti loss is prevented.