The Missouri Compromise is the title generally attached to the legislation passed by the 16th United States Congress on May 8, 1820. The measures provided for the admission of Maine as a free state along with Missouri as a slave state, thus maintaining the balance of power between North and South. As part of the compromise, slavery was prohibited north of the 36Â°30â² parallel, excluding Missouri. President James Monroe signed the legislation on April 6, 1820. Earlier, on February 3, 1819 ...
Galvanization, or galvanisation, is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanization, in which parts are submerged in a bath of molten zinc.
Hot-dip galvanization is a form of galvanization. It is the process of coating iron and steel with a layer of zinc by immersing the metal in a bath of molten zinc at a temperature of around 840 Â°F (449 Â°C). typical hot-dip galvanizing line operates as follows: 1  Steel is cleaned using a caustic solution. 2  The caustic cleaning solution is rinsed off. 3  The steel is pickled in an acidic solution to remove mill scale. 4  The pickling solution is rinsed off. 5  A flux, often zinc ammonium chloride is applied to the steel to inhibit oxidation of the cleaned 6  ... The