vertical stick welding 7018_welding rod selection chart pdf

        Cast iron welding rod is a welding rod used for cast iron, characterized by high strength and good plasticity. It is suitable for gray cast iron and ductile iron, and can be machined.
        Cast iron is usually classified according to the distribution of carbon in cast iron, and can generally be divided into white cast iron, gray cast iron, ductile cast iron, vermicular cast iron and malleable cast iron. Due to the high carbon content, uneven structure, low plasticity and poor weldability of cast iron, it is very easy to produce defects such as white cast iron, cracks and pores during welding. Special attention should be paid to the selection of welding process and welding materials during welding. For welding rod arc welding, it can basically be divided into two categories, one is the homogeneous weld type, namely cast iron type; the other is the heterogeneous weld type such as: steel (carbon steel or alloy structural steel, etc.), pure Ni (pure nickel 308), Ni-Fe (nickel iron 408), Ni-Cu (nickel copper 508), Ni-Fe-Cu, Fe-Cu, etc. When selecting welding rods, you can choose according to different cast iron materials, different cutting requirements, different service conditions and importance, different structural characteristics, stiffness, etc.

Trustworthiness is the foundation of any successful supplier-customer relationship. A trustworthy supplier is transparent about their products' origin, quality standards, and supply chain processes. They should provide certifications and documentation to affirm that their electrodes comply with international standards, such as DIN, AWS, or ISO. Furthermore, a reliable supplier will support their clients with after-sales services, including technical support and return policies.

Moreover, authoritative welding electrodes manufacturers prioritize strict quality control measures, often exceeding the industry standards. This involves thorough testing processes, including X-ray tests, ultrasonic tests, and other non-destructive testing (NDT) techniques to ensure the integrity and performance of the electrodes under different operational conditions. These measures not only highlight the manufacturer's dedication to quality but also foster trustworthiness among clients who rely on these products for critical applications.