極低降伏強度制震薄鋼板開發

The Development of Extra-low Yield Strength Thin Steels for Seismic Device

張錦溶(Chin-Jung Chang) ； 陳子明(Tzu-Ming Chen) ； 張瑞東(Jui-Tung Chang)

《鑛冶：中國鑛冶工程學會會刊》 45卷1期 (2001/03) Pp. 63-70

https://doi.org/10.30069/MM.200103_45(1).0005

摘要

極低降伏強度制震鋼板應用於制震元件，藉由鋼材優異之塑性變形能力，吸收地震能量，以保護主結構體的安全。中鋼已開發厚度16 mm以上之極低降伏強度制震鋼板，並應用於新竹市某大樓之制震結構設計。為滿足市場對厚度16 mm以下鋼板需求，續進行本項極低降伏強度制震薄鋼板之研究開發。軋延狀態下之極低降伏強度薄鋼板，因肥粒鐵晶粒細化，鋼板降伏強度高。經實驗室開發「粗晶退火」熱處理技術，並應用於鋼板工場，成功開發出降伏強度低於100MPa之8mm極低降伏強度薄鋼板。

關鍵字

制震元件 ； 極低降伏強度

並列摘要

Seismic devices made of extra-low yield strength steels have been demonstrated their superior capability in absorbing vibration energy imposed on structure by earthquake, therefore protects the main structure from damage. Extra-low yield strength steels with thickness higher than 16 mm have been successfully developed and commercializaed in China Steel Corporation and used in seismic devices in the construction of a high rise building in Hsin-chu. This paper is to introduce the development of thinner extralow yeild strength steels below 16 mm to meet the marketing requirement. The yield strength of thin plates is invariantly strengthened by ferrite grain size refining effect in rolling process. To diminishing the yeield strength, heat treatment methods of steels had been studied, a grain coarsening annealing heat treatment has been established and applied in the production line and consequently 8mm in thickness extralow yield strength thin steels possessing yield strength below 100MPa have been developed in China Steel Corporation.

並列關鍵字

Seismic devices ； Extra-low vield strength