ASTM A239-2014

　　中文名稱：鐵或鋼制品上鍍鋅層薄點(diǎn)的定位規(guī)程

　　英文名稱：Standard Practice for Locating the Thinnest Spot in a Zinc (Galvanized) Coating on Iron or Steel Articles,

　　原文名稱：Standard Practice for Locating the Thinnest Spot in a Zinc (Galvanized) Coating on Iron or Steel Articles,

　　范 圍：This practice is designed to locate the thinnest portions of the zinc coating on newly coated items (see Appendix X1). Variations in coating thickness can be due to the process by which the zinc is applied (hot dipped, electroplated, or sprayed) or by the geometry of the part that is coated. During hot-dip galvanizing, the coating thickness is affected by the drainage pattern of the molten zinc, while during zinc spraying (metallizing), coating thickness can be dependent on the operator's manipulation of the spray nozzle. The geometry of the part can also influence coating thickness especially during hot-dip galvanizing, where peaks and valleys on the part can cause molten zinc to build up or thin out. This practice is designed to identify those areas of the part where the coating is thin.

　　發(fā)布日期：2014-05-01

　　實(shí)施日期：2014-05-01

　　標(biāo)準(zhǔn)組織：美國(guó)試驗(yàn)與材料協(xié)會(huì)標(biāo)準(zhǔn)(ASTM)

　　ICS分類號(hào)：(25.220.40)金屬鍍層

　　中國(guó)標(biāo)準(zhǔn)分類號(hào)：(A29)材料防護(hù)

　　同一中標(biāo)分類下的其他標(biāo)準(zhǔn)

　　? API TR 939-D-2007

　　? ASTM A143/A143M-2007(2014)防止熱浸鍍鋅結(jié)構(gòu)鋼制品變脆和檢測(cè)變脆程序的規(guī)程

　　? ASTM A153/A153M-2009鋼鐵構(gòu)件鍍鋅層(熱浸)規(guī)格

　　? ASTM A384/A384M-2007　鋼制組裝件熱浸鍍鋅時(shí)防翹曲和變形的規(guī)程

　　? ASTM A90/A90M-2013鋼鐵制品上鋅或鋅合金鍍層重量(質(zhì)量)試驗(yàn)方法

　　? ASTM A90/A90M-2013(R2018)

　　? ASTM A123/A123M-2013鋼鐵制品鍍鋅層(熱浸鍍鋅)規(guī)格

　　? ASTM A123/A123M-2017