Introduction
Welding stainless steel wire, also known as stainless steel welding wire or alloy welding wire, is a type of wire used for welding, and is produced in the form of a spool or a coil. The most commonly used type of stainless steel wire is GB 4242-84, which has the advantages of good corrosion resistance, good oxidation resistance, and is also non-magnetic. In this article, we will discuss the properties, applications, and process requirements of GB 4242-84 stainless steel wire welding.
Properties
GB 4242-84 stainless steel wire welding is a non-magnetic stainless steel gas shielded welding production process. Its main parameters are as follows:≤0.5mm wire diameter, the loss value of raw materials is not more than 0.47%, the mechanical properties of the deposited metal are Brinell hardness HBS170＜, tensile strength is 440MPa, Elongation is ≥25%, and welding current is 300-450A.
Applications
GB 4242-84 stainless steel wire welding is the most widely used welding wire material in the welding industry, due to its excellent anti-rust, anti-oxidation, corrosion resistance and non-magnetic properties. Therefore, it has a wide range of applications. It is not only used for welding containers, pipelines, and components of chemical containers, but also for welding and repairing of general steels, such as automobile components and industrial components, as well as heat exchangers and boilers.
Process Requirements
Welding of stainless steel wire GB 4242-84 generally requires the use of argon-rich shielded metal arc welding (MMA) process. It is important to note that it is necessary to preheat the weldment before welding, and the preheat temperature should not exceed 300°C. The surface of the weldment should be cleaned of rust and mill scale with brush, sandpaper or abrasive cloth before welding. The welding rod should also be baked to remove moisture before welding. After welding, the weldment should be slowly cooled to avoid crack formation caused by rapid cooling.
Conclusion
To conclude, GB 4242-84 stainless steel wire welding is a high-quality welding wire material used in the welding industry. It has the advantages of good corrosion resistance, good oxidation resistance, non-magnetic, and is widely used for welding containers, pipelines, and components of chemical containers, as well as for welding of general steels, automotive components, industrial components, heat exchangers, and boilers. The welding of GB 4242-84 stainless steel wire requires preheating of the weldment and slow cooling of the weldment after welding.
