DOUBLE GLASS COATED TANK FOR HIGH TEMPERATURE WATER HEATERS

    公开(公告)号:US20190093921A1

    公开(公告)日:2019-03-28

    申请号:US15732140

    申请日:2017-09-25

    发明人: Claude Lesage

    IPC分类号: F24H1/18 C23D5/04

    摘要: A double glass coated steel tank for a high temperature water heater and its method of fabrication is described. The tank is constructed of steel welded parts and fittings are secured to the tank without the presence of sharp edges being formed on the inner surface of the tank not to form any weakness in the composite glass coating to be applied. A first water resistant base coat of cobalt glass enriched with ZIRCON (trademark) is applied to the inner surface and the tank is heat fired at a high temperature in the order of about 1600 degrees F. A second high temperature water resistant glass coat, having a fine gas bubble size not exceeding 10 microns, is applied over the first coat and the tank is heat fired a second time. The composite glass coating thus formed is highly water and corrosion resistant in a water environment of up to at least 190 degrees F.