Alkaline mixed gas shielded welding heat-resistant steel flux-cored wire for all-position welding

[0028] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] The present invention will be described in detail below in conjunction with examples.

[0030] An alkaline mixed gas shielded welding heat-resistant steel flux-cored welding wire for all-position welding. The welding wire is composed of steel strip wrapped powder. The chemical composition of the steel strip includes: C: 0.01-0.04%, Mn: 0.19-0.26% , Si≤0.03%, S≤0.010%, P≤0.015%, Al:0.010-0.045%, Ca≤0.003%, N≤0.005%, the balance is Fe and unavoidable impurities; the mass fraction of welding wire powder is shown in the table below 1.

[0031] Table 1 Mass fraction of welding wire powder

[0032] Element(%) Implementation 1 Implementation 2 Implementation 3 Implementation 4 TiO 2

[0033] Wire preparation:

[0034] Prepare the medicinal powder according to the ratio in Table 1, and