Problems: The primary stress to which the surface of the mould is exposed are thermal shock, abrasion and chemical reactions between the liquid alloy and the iron in the steel mould. Certain regions of the mould are subjected to especially high stres..
Coining die, reduction of wear and sticking by Maxit? CrN-mod coating . 采用Maxit? CrN-mod涂層的硬幣沖頭佣谐, 可以有效解決磨損和材料粘附的問題肚吏。 Forging dies for making of connecting rod, plasmanitrided and Maxit? CrN coated for reducing abrasive wear. ..
1914年建造在密爾沃基,由著名設(shè)計師馬歇爾和赋睿克斯設(shè)計的新古典主義建筑,74英尺高,442噸10幢希臘格林式建筑,屋頂飛檐處皆有雄偉的花崗巖修飾. 西北相互人壽保險公司(Northwestern Mutual Life building in Milwaukee)(美國)以3000萬美元修復(fù)此建筑.而修復(fù)此建筑的關(guān)鍵..