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In a stern tube seal liner using high chromium stainless steel, sometimes troubles occur owing to pitting corrosion and abnormal abrasion. Therefore in order to develop the new stainless steel liner superior in corrosion, the effect of chemical composition was investigated by immersion corrosion tests in 3% FeCl<SUB>3</SUB> solution. From the results of above tests, best composition was selected, and the abrasion resistance of the selected material was confirmed by trial tests using 220 type seal liner. Consequently the followings were found;<BR>1) Reducing the carbon content to 0.1% or less is effective to make corrosion resistance better.<BR>2) The pitting corrosion resistance is improved by containing 1 to 2% molybdenium and special element.<BR>3) On heat treatment, water cooled liner is better than air cooled one in view of decreasing corrosion rate.<BR>4) The new developed stainless steel liner is confirmed to be superior to ordinary one in pitting corrosion resistance.
- 公益社団法人 日本マリンエンジニアリング学会の論文