高強度伺服器機殼用途與滑軌用途鍍鋅SGC400鋼種開發

Development of Hot-Dip Galvanized Steel of SGC400 Grade for High Strength Server Case and Slide

鍾思行(S.H. Chung) ； 王宏平(H.P. Wang) ； 劉明皓(M.H. Liu) ； 鄭維仁(W.R. Zheng)

《鑛冶：中國鑛冶工程學會會刊》 65卷1期 (2021/03) Pp. 70-74

https://doi.org/10.30069/MM.202103_65(1).06

摘要

本文主要介紹熱浸鍍鋅高強度鋼SGC400依不同用途而新開發之二項鋼種，其一為高強度伺服器機殼用途，係以傳統SGC400鋼種為基礎，調整碳含量以避開包晶反應區，進而提升鋼捲表面品質；並藉添加磷（P）、矽（Si），及調整冷軋裁減率以優化機性，達成伺服器機殼高表面品質、高強度、易加工要求。其二為滑軌用途，藉調整成分、添加微量合金元素如鈮（Nb）等，並提高熱軋階段出爐溫度，增加合金固溶量以提高降伏抗拉比值，並同步提升抗疲勞強度，達成滑軌用料之需求。藉由本次開發之二項SGC400新用途鋼種，成功提升產業高品級用料比例，並可使中鋼熱浸鍍鋅用料在電腦、3C領域進一步拓展，目標可帶來年產值達25億元以上。

關鍵字

連續熱浸鍍鋅 ； 高強度鋼 ； SGC400 ； 伺服器機殼 ； 滑軌

並列摘要

In this study we introduce two newly developed steel grades. The first one is based on original SGC400 for the usage of high strength server case. Its carbon content is lowered to avoid the peritectic phase transformation to improve its surface quality. Phosphor and silicon are added and cold-rolling reduction ratio is adjusted to achieve the three demands of server case, including high strength, high surface quality and good formability. The other is for the usage of slide. The yield ratio and anti-fatigue strength is increased by the adjustment of chemical composition such as the addition of niobium, and the increase of soluble alloying contents by higher slab reheating temperature during hot-rolled process to meet the requirement of slide. With this two new developed grade, CSC can help the upgrade of 3C steel industry and bring more market share, which annual value is over 2.5 billion NTD.

並列關鍵字

Hot-dip galvanized ； High strength ； SGC400 ； Server case ； Slide

參考文獻

Zhu, L.G.,Kumar, R.V.(2007).Shrinkage of carbon steel by thermal contraction and phase transformation during solidification.Ironmaking and Steelmaking.34(1),71-75.

鄭暉志(2010).汽車結構用鋼 EN 10292 HX380LAD 及 420LAD GI 高強度低合金鋼開發.中國鋼鐵冶金技術處技術報告.(中國鋼鐵冶金技術處技術報告).,未出版.

Bleck, W.,Ratte, E.(2005).Fundamentals of cold formable HSLA steels.International symposium on Niobium microalloyed sheet steel for automotive application.(International symposium on Niobium microalloyed sheet steel for automotive application).:

Hulka, K.,Bordignon, P.,Gray, M.(2003).含鈮 0.06-0.10% 低碳 HSLA 鋼的生產經驗.Araxa HTP Conference.(Araxa HTP Conference).

沈忠雄(2015).SGC400 配用低碳 HSLA 鋼種 CR300LA 滑軌產品性能評估.中國鋼鐵冶金技術處技術報告.(中國鋼鐵冶金技術處技術報告).,未出版.