Abstract
We surveyed the current status and problems in S/G U-tubes in Korea and worldwide. Also we gathered manufacturing specifications of S/G U-tubes and compared/analyzed the differences in them company by company. We produced alloy 600 tubes (in cooperation with Sammi Special Steels) through V.I.M. (Vacuum Induction Melting; 2 ton capacity), 4 steps of hot press forging, hot extrusion (10:1 of reduction ratio), 3 steps of cold pilgerings and so on. We will continue to characterize the tubes and 2nd time preproduce the tubes using the feed-back data. With regard to alloy 690, which is getting popular for S/G U-tubes worldwide, we cast four 60 Kg ingots and two 6 Kg ingots by V.I.M.. We analyzed the chemical composition, macrostructures, hot workability, and so on ; all ingots were good except on 60 Kg ingot. Finally we produced high quality alloy 690 ingot (about 1 Kg) by E.S.R. (Electroslag Remelting) method (in cooperation with Yeoungnam University). We used CaF/CaO/Al2O3/MgO quartenary slag system. We have made directionally grown good ingots by E.S.R. and especially the hot workability at 1100 deg C - the temperature at which V.I.M. ingots showed very poor hot workability - was very much improved (from 30 to 90
More>>
Kuk, Il Hiun;
Jang, Jin Sung;
Rhee, Chang Kyu;
Chung, Man Kyo;
Woo, Yun Myeoung;
Han, Chang Hee
[1]
- Korea Atomic Energy Res. Inst., Taejon (Korea, Republic of)
Citation Formats
Kuk, Il Hiun, Jang, Jin Sung, Rhee, Chang Kyu, Chung, Man Kyo, Woo, Yun Myeoung, and Han, Chang Hee.
Inconel alloys development -Development of the advanced nuclear materials-.
Korea, Republic of: N. p.,
1994.
Web.
Kuk, Il Hiun, Jang, Jin Sung, Rhee, Chang Kyu, Chung, Man Kyo, Woo, Yun Myeoung, & Han, Chang Hee.
Inconel alloys development -Development of the advanced nuclear materials-.
Korea, Republic of.
Kuk, Il Hiun, Jang, Jin Sung, Rhee, Chang Kyu, Chung, Man Kyo, Woo, Yun Myeoung, and Han, Chang Hee.
1994.
"Inconel alloys development -Development of the advanced nuclear materials-."
Korea, Republic of.
@misc{etde_10111279,
title = {Inconel alloys development -Development of the advanced nuclear materials-}
author = {Kuk, Il Hiun, Jang, Jin Sung, Rhee, Chang Kyu, Chung, Man Kyo, Woo, Yun Myeoung, and Han, Chang Hee}
abstractNote = {We surveyed the current status and problems in S/G U-tubes in Korea and worldwide. Also we gathered manufacturing specifications of S/G U-tubes and compared/analyzed the differences in them company by company. We produced alloy 600 tubes (in cooperation with Sammi Special Steels) through V.I.M. (Vacuum Induction Melting; 2 ton capacity), 4 steps of hot press forging, hot extrusion (10:1 of reduction ratio), 3 steps of cold pilgerings and so on. We will continue to characterize the tubes and 2nd time preproduce the tubes using the feed-back data. With regard to alloy 690, which is getting popular for S/G U-tubes worldwide, we cast four 60 Kg ingots and two 6 Kg ingots by V.I.M.. We analyzed the chemical composition, macrostructures, hot workability, and so on ; all ingots were good except on 60 Kg ingot. Finally we produced high quality alloy 690 ingot (about 1 Kg) by E.S.R. (Electroslag Remelting) method (in cooperation with Yeoungnam University). We used CaF/CaO/Al2O3/MgO quartenary slag system. We have made directionally grown good ingots by E.S.R. and especially the hot workability at 1100 deg C - the temperature at which V.I.M. ingots showed very poor hot workability - was very much improved (from 30 to 90 % of reduction of area). We continue to analyze the effects of E.S.R. to the structure and properties of alloy 690 (grain size, morphology, and directionality; any changes of inclusions and so on). (Author).}
place = {Korea, Republic of}
year = {1994}
month = {Jul}
}
title = {Inconel alloys development -Development of the advanced nuclear materials-}
author = {Kuk, Il Hiun, Jang, Jin Sung, Rhee, Chang Kyu, Chung, Man Kyo, Woo, Yun Myeoung, and Han, Chang Hee}
abstractNote = {We surveyed the current status and problems in S/G U-tubes in Korea and worldwide. Also we gathered manufacturing specifications of S/G U-tubes and compared/analyzed the differences in them company by company. We produced alloy 600 tubes (in cooperation with Sammi Special Steels) through V.I.M. (Vacuum Induction Melting; 2 ton capacity), 4 steps of hot press forging, hot extrusion (10:1 of reduction ratio), 3 steps of cold pilgerings and so on. We will continue to characterize the tubes and 2nd time preproduce the tubes using the feed-back data. With regard to alloy 690, which is getting popular for S/G U-tubes worldwide, we cast four 60 Kg ingots and two 6 Kg ingots by V.I.M.. We analyzed the chemical composition, macrostructures, hot workability, and so on ; all ingots were good except on 60 Kg ingot. Finally we produced high quality alloy 690 ingot (about 1 Kg) by E.S.R. (Electroslag Remelting) method (in cooperation with Yeoungnam University). We used CaF/CaO/Al2O3/MgO quartenary slag system. We have made directionally grown good ingots by E.S.R. and especially the hot workability at 1100 deg C - the temperature at which V.I.M. ingots showed very poor hot workability - was very much improved (from 30 to 90 % of reduction of area). We continue to analyze the effects of E.S.R. to the structure and properties of alloy 690 (grain size, morphology, and directionality; any changes of inclusions and so on). (Author).}
place = {Korea, Republic of}
year = {1994}
month = {Jul}
}