The iron powder used in the production of wire, which are the key control factors?

For welding iron powder, the sulphur content, oxygen content, pine ratio and particle size are mainly considered.
The high oxygen content results in the failure of the added alloy element;
The loose ratio mainly determines the homogeneity of the mixture, the higher the pine ratio, the better fluidity, and the reduction of the bridge and so on.
Particle size, -200 mesh size is large, which causes high temperature and high temperature combustion in the welding process, and the environmental impact of the material is low.