Ceramic Welding Powder Mixture

The exothermic reaction at the point of impact melts the projected powder and the refractory surface creating a bond very similar to the effect of metallic welding.

Ceramic welding powder mixture.

Many different lance designs and sizes are available which makes it possible to work on damaged areas in the furnace that are normally difficult to reach such as the crown port necks burner arches and doghouse arches. Grain size mm 0 2. In order to reduce any tendency for the weld mass to include a low. In ceramic welding processes oxidizing gas and a mixture of refractory and fuel powders are projected against a surface and the fuel is burnt to generate sufficient heat that the refractory powder becomes at least partially melted or softened and a cohesive refractory weld mass is progressively built up against that surface.

C max fe 2 o 3 max 1. Providing a ceramic welding powder which is a mixture consisting essentially of a a refractory powder and b a fuel powder wherein the refractory powder has a major part by weight which consists of at least one oxide selected from the group consisting of magnesia alumina and chromic oxide and wherein the fuel powder is present in the mixture by not more than 15 by weight and the fuel powder is comprised of at least two metals selected from the group consisting of aluminum magnesium. Al 2 o 3 min mgo max total sio 2 min 92. Silica type s is suitable for the majority of ocoke oven repairs.

Fireclay type d is used for fire brick or chamotte applications. Sp150 ceramic welding machine ceramic welding powder resco ceramic welding powders for use in coke oven repairs include. Powder mixture ceramic welding welding process prior art date 1989 07 25 application number it6739290a other languages italian it other versions it9067392d0 en it1241236b en inventor cherico stephen d jean moreau leon philippe mottet pierre robyn marcke de lummen guy van alexandre zivkovic charles michael zvosec original assignee fosbel. Zro 2 min total al 2 o 3 min 4 5.

In ceramic welding processes oxidizing gas and a mixture of refractory and fuel powders are projected against a surface and the fuel is burnt to generate sufficient heat that the refractory powder. Sic min physical properties. A mixture of ceramic and metallic particles are driven by oxygen flow and projected on to the hot refractory surface which requires the repair. Ceramic welding technology a mixture of ceramic and metallic particles is projected with oxygen onto a hot refractory substrate.

Hotface welding to carry out ceramic welding during furnace operation a dry mixture the welding material is pumped into the furnace.