Ultrahigh-intensity all-austenite stainless steel welding wire
A full-austenitic, ultra-high-strength technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problem of not meeting the welding requirements of hardening structures, the weld metal is not fully austenitic, and the welding is sensitive to cold cracks and other problems, to achieve the effect of good welding process performance, excellent comprehensive performance and high tensile strength
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[0028] Example
[0029] The chemical composition of the welding wire used in the embodiment is shown in Table 1, and the welding wire specification is φ1.2mm. The steel plate used for the test is 20mm thick Mn13 steel, the welding process is shown in Table 2, using 80% Ar+20% CO 2 As a shielding gas, Table 2 is the welding specification of the test plate, and Table 3 is the mechanical properties of the deposited metal. For the convenience of comparison, the welding wires 1, 2, and 3 of the present invention are invention examples, and the welding wires 4 and 5 are the prior art ER307Si and ER309Mo welding wires. Take the comparison as an example, and the test and analysis of the weld structure have been carried out. The metallographic structure of the weld in several examples is the same, all of which are austenite + a small amount of carbide.
[0030] Table 1 The chemical composition of the welding wire of the present invention and the comparative example of the prior art is shown...
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