The low melting point of lead means the welder can easily melt the base metal and filler metal with an oxy-acetylene torch to achieve a solid weld. TIG welding is also suitable for welding lead due to the capability of this process to weld at very low amperages. Stick welding is unsuitable for welding lead because the SMAW process is too hot.
Oxy-acetylene welding is the most common method for welding lead. The low melting point of lead means the welder can easily melt the base metal and filler metal with an oxy-acetylene torch to achieve a solid weld. TIG welding is also suitable for welding lead due to the capability of this process to weld at very low amperages.
Lead is a heavy and soft metal used in various industries, including battery manufacturing, radiation shielding, and plumbing. Lead welding is a crucial skill in these industries. Whether you’re a seasoned welder or just starting, understanding the best practices for welding lead is essential.
There are two types of lead found in commercial welding: Pure lead is lead in its natural state, not mixed with any other alloys. This type of lead is commonly found in radiation shielding, lead-acid batteries, certain types of pipes, and cable sheathing due to its high density and malleability.
Lead welding poses specific health risks, including lead poisoning. Inhalation or ingestion of lead particles or fumes can lead to lead poisoning, which may cause symptoms such as fatigue, nausea, abdominal pain, and neurological issues.
Before welding lead, the surfaces to be welded must be clean and free of contaminants, including oxides. This can be achieved by using a wire brush or abrasive material to clean the lead surfaces thoroughly. Joint design and fit-up are essential for achieving strong and durable lead welds.