cast iron tig welding rod_how should we choose electrode sizes

DingZhou JinLong Metal Production Co. , Ltd. is one of the largest integrated manufacturers of special welding materials in China. Its main products include stainless steel welding materials, heat resistant steel welding materials, low temperature steel welding materials, high strength steel welding materials, hardfacing welding materials, nickel-based cast iron welding materials, nickel and nickel alloy welding materials, copper and copper alloy welding materials, special purpose welding materials, etc. , more than 200 varieties with an annual production capacity of 20,000 tons. Products with good market applicability and competitiveness, widely used in petrochemical, chemical, nuclear power, power, light industry machinery, metallurgy and pressure vessel manufacturing industries. Sales network throughout the country, has become a domestic special welding materials one of the mainstream brands, a good reputation for cooperation, to the industry widely praised.

The welding industry hinges on precision and durability. As such, manufacturers who consistently adhere to international quality standards, such as ISO and AWS certifications, stand out for their commitment to excellence. This not only assures customers of product quality but also cements the manufacturer’s reputation as a leader in the industry. Reputable manufacturers invest heavily in research and development, ensuring that their products evolve with technological advancements and meet the complex needs of modern applications.

        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.

Real Experience Counts Real-world experience goes beyond mere knowledge. It's about understanding the challenges welders face on-site and in controlled environments. Suppliers with extensive experience in different sectors—such as automotive, construction, and industrial fabrication—provide insights that are practical and immensely valuable. Experience is not merely the number of years a company has been in business but includes their engagement with projects of varying complexities and scales.