Welding rods, also known as welding electrodes or filler rods, play a vital role in the welding process. They are consumable materials that provide heat and add filler material to create strong and durable weld joints.
Composition and Coatings:
Welding rods are composed of different materials based on the welding process and the metals being welded. Common materials used in welding rods include mild steel, stainless steel, cast iron, aluminum, and various alloys. The selection of the rod material depends on its compatibility with the base metal and the desired mechanical properties of the weld.
Welding rods are coated with flux materials that serve multiple purposes. The flux coating produces a shielding gas when it melts, protecting the weld pool from atmospheric contamination. It also creates a layer of slag over the weld bead, acting as a barrier against impurities and assisting in cooling the weld. Additionally, the flux coating contains substances that aid in deoxidation and arc stability during the welding process.
Selection and Application:
Selecting the appropriate welding rod is crucial for achieving successful welds. Factors to consider include the type of base metal, welding process, joint configuration, desired weld characteristics (strength, ductility, corrosion resistance, etc.), and specific industry standards or codes.
Key considerations for welding rod selection include electrode composition, diameter, and coating type. It is essential to choose an electrode with a composition compatible with the base metal to ensure a sound weld with the desired mechanical properties. The electrode diameter should be selected based on welding current, joint thickness, and weld position. Additionally, the choice of flux coating type depends on the welding process and the desired weld characteristics.
Proper welding procedures, including electrode storage, pre-cleaning of base metals, and maintaining suitable welding conditions (current, voltage, travel speed, etc.), should be followed. Adhering to safety guidelines, such as wearing protective gear and working in well-ventilated areas, is crucial for personal safety during welding operations.
The table below shows the latest retail May 2023 prices of Welding Rods in Philippine Peso price per pieces including its size and specs.
Price and Standard Sizes of Welding Rods per pc in the Philippines
|SIZE / DIMENSION||UNIT||PRICE|
|308 (3.2mm)||1 KG||580.00|
|6011 (3.2mm)||1 KG||175.00|
|6011 (3.2mm)||1 BOX||2750.00|
|6013 (3.2mm)||1 KG||137.00|
|6013 (3.2mm)||1 BOX||2200.00|
UPDATED: Construction Material Prices for BI Sheet in the Philippines (May 2023)
UPDATED: All Construction Prices are based on retail prices around hardware in Metro Manila
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