低温溶体化熱処理法による15-5PHステンレス鋼製大型水中翼の製作

概要

論文の詳細を見る
The hydrofoils installed in the high speed passenger crafts "RAINBOW" and "RAINBOW 2" were made of 15-5PH stainless steel, a precipitation hardening corrosion resistant stainless steel. Basically, welded structures of 15-5PH stainless steel require heat treatment after weld assembly to improve the properties of the weld part. Although the conventional heat treatment process requires high re-solution temperature of 1050〜1100℃ and quick air cooling, a new heat treatment process with a low re-solution temperature of 790℃ and a slow cooling using the furnace was developed in order to avoid the excessive distortions due to heat treatment. This paper presents the manufacturing process of the actual large foils for the fully-submerged hydrofoil craft and also presents the results of the distortion and mechanical properties of the foils heat treated based on the low temperature re-solution heat treatment condition.
社団法人日本船舶海洋工学会の論文
2000-03-29