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C11040-X1-1 Lincoln Bester 6013 Rutile Coated Electrodes, Half Box
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    Rapid Ref : C11040-X1-1  

    Lincoln Bester 6013 Rutile Coated Electrodes, Half Box
    C11040-X1-1

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    Prices From £6.81 ex VAT

    The coated electrode consists of a metallic core centred within a coating. The diameter and the length of a rod are defined by the dimensions of its core.

    The coating in the electrode is responsible for protecting the liquid weld pool, it can also provide alloying elements that increase the properties of the weld material.

    The coated electrode serves to create the electric arc. As it melts, it fully contributes to forming the weld bead. Its coating also protects the weld pool and the weld bead by forming the slag.

    Applications:

    Metalworking (ironwork, sheet metalwork, metal fittings, maintenance)

    • Good bead appearance
    • Very good slag removal
    • Reduced weld spatter

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    MMA Electrodes FAQs

    Straight answers to the questions people ask most when choosing and using MMA (stick) welding electrodes.

    How do I choose the right MMA electrode?icon-minus-redicon-plus-red

    Start with the metal you are welding, because the electrode must be suited to it: mild steel, low alloy steel, stainless steel, cast iron and other metals each need their own types. Then consider the strength and toughness required, the joint and welding position, the thickness, and the current your machine can supply.

    For general work on mild steel, a rutile electrode is the easy choice. For structural and pressure work, or where toughness matters, a low hydrogen (basic) electrode is common. The job specification may fix the electrode type.

    Do I need to dry low hydrogen electrodes?icon-minus-redicon-plus-red

    Yes, usually. Low hydrogen coatings absorb moisture from the air, and moisture puts hydrogen into the weld, which can cause cracking, especially in thicker or higher-strength steels. Electrodes are normally supplied in sealed packs, and once opened they should be kept in a heated holding oven, or re-dried following the maker's instructions.

    The temperatures and times depend on the electrode, so follow the pack and the welding procedure. Do not use electrodes that have been left out in damp air.

    What electrode size and current should I use?icon-minus-redicon-plus-red

    Choose a diameter to suit the thickness of the metal and the joint. Thin material needs a thin electrode and low current, thicker material allows larger diameters and higher current. Smaller diameters are easier to use out of position, such as vertical and overhead.

    The pack gives a recommended current range for each diameter, so set the machine within it. Too low a current gives a lumpy weld that sticks, and too high a current overheats the electrode, causing spatter, undercut and a coating that breaks down.

    Can I use AC or DC, and does polarity matter?icon-minus-redicon-plus-red

    Many electrodes run on both AC and DC, while some are designed for DC only. The pack states which current types and polarity suit that electrode, and some electrodes need a higher open-circuit voltage than a small machine can supply on AC.

    Polarity affects penetration and bead shape. Different electrode types are generally run with the electrode connected to the positive or negative terminal, so check the maker's instructions before setting up. Using the wrong polarity can give a poor arc and weak welds.

    See all 6 questions for this category

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