Galvanized Steel Sheet Manufacturing Process

Process for manufacturing a galvanized steel sheet comprising steps of coating a steel sheet with nickel in an amount of from 0 2 to 2 g m 2 heating the steel sheet thus coated to a temperature within the range of from 420 c.

Galvanized steel sheet manufacturing process.

This method tightly adheres the coating to the steel with an iron zinc alloy bonding layer formed by a diffusion process while the heated steel strip is in contact with the molten zinc. Sheets process center conventional galvanized steel prior art date 1945 11 26 legal status the legal status is an assumption and is not a legal conclusion. The continuous hot dip coating process according to astm a653 specification for steel sheet zinc coated galvanized or zinc iron alloy coated galvannealed by the hot dip process is a widely used method to coat sheet products prior to fabrication. Some drinking water pipes are still made from galvanized steel.

The hot dip process consists of submerging the carbon steel into a molten zinc bath approximately 680 degrees fahrenheit. The manufacture of rolled galvanized color coated steel sheet. Hot dip galvanization is a form of galvanization it is the process of coating iron and steel with zinc which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 449 c 840 f. Galvanized steel is a carbon steel that has been coated with zinc.

The manufacture of rolled galvanized color coated steel sheet. When exposed to the atmosphere the pure zinc zn reacts with oxygen o 2 to form zinc oxide which further reacts with carbon dioxide co 2. Galvanized steel in particular is often what is used in modern steel frame buildings. An organic inorganic or organic inorganic hybrid film is applied to the surface of sheet steel in order to supplement its corrosion resistance and to enhance desirable properties such as resistance to fingerprint marks and workability.

Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed expired lifetime application number us630907a inventor nicholas p veeder. The most common method of zinc coating is the hot dip process. In this process steel is passed as a continuous ribbon through production and into a bath of. Hot dipped galvanized steel sheet in coil is cold rolled steel coil coated with zinc on two sides by a continuous hot dip process.