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What are the types of carbon steel flux cored wires?
Mar 26,2024
Carbon steel flux-cored welding wire is a high-quality welding process. In the early 21st century, FCAW welding was widely used on carbon steel welds, sa-335p12 and 12cr1mo VG headers, but for SA-335P91 In short, the development of FCAW is difficult, the process performance and mechanical properties are difficult to meet at the same time, and the total research and development cost is high.
Only a few large foreign welding material suppliers have developed this formula. The SA-335P91 flow short circuit test of several foreign welding material suppliers was selected for comparative analysis. The impact of welding specifications and heat treatment specifications on the performance of the welding wire joint was studied. SA-335P91 Through flow welding process, a reasonable range of welding and heat treatment process parameters was obtained; the macrostructure and microstructure of welding were observed and analyzed, and suggestions for further improvement were put forward.
What is the basis for classifying carbon steel flux cored wire types?
a) Mechanical properties of deposited metal;
b) Welding position;
c) Welding wire type characteristics, including protection type, current type, slag characteristics, etc.
The symbols in the model number are explained in order as follows:
a) Mechanical properties of the deposited metal, the first two symbols "××" after the letter "e" indicate the mechanical properties of the deposited metal.
b) Welding position, the third symbol "
c) “Characteristics of welding wire types and symbols after short stroke”×” See Table 2 and Appendix B for specific requirements and instructions.
d) The letter “m” indicates that the protective gas is 75%-80% Ar+Co. When there is no letter “m”, it indicates that the protective gas is Co. or self-protecting type.
e) The letter "I" indicates that the V-notch impact energy of the deposited metal is not less than 27j℃ at -40°C. When there is no letter "L", it means that the impact performance of the deposited metal of the welding wire meets the general requirements.
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