Sintered flux and melted flux are collectively referred to as submerged arc flux. Like welding wire, the chemical composition of weld metal is not very different, because their alloy transition coefficient is the same, but sintered flux is alkaline

The transition coefficient of sintered flux is higher than that of melted flux because of its high degree and large transition coefficient. In addition, it can add alloy components.

Sintering flux is smokeless, tasteless and non-toxic during welding.

The specific gravity is light. Welding the same object saves more than 20% than smelting flux.

At present, large enterprises (enterprises focusing on workers and environmental protection) have changed to sintered flux. Smelting flux is a product of the 1950s and sintered flux is a product of the 1980s. 80-90% of foreign countries are using sintered flux

There are also non transition alloy elements in sintered flux, which can not be generalized

Sintered flux can also produce harmful substances. As long as it contains SP, it will produce harmful gas

The sintered flux will burn more in the welding process and will not save 20%

The recovery rate of melted flux slag is higher than that of sintered flux. Now the slag shell of melted flux can be sold for more than 500 yuan / ton, and the sintered flux is about 200 yuan / ton

With the increasing price of chemical ore and environmental protection requirements, the price of smelting flux