S1: SMAW One _ Mild Steel Electrodes Flashcards
Classification System
Objective 1: Electrode Classification
Electrodes are classified based on tensile strength, welding position, type of coating, and current. Example:
E6010: E (Electrode), 60 (60,000 psi tensile strength), 1 (all positions), 0 (cellulose sodium coating).
Selection Factors
Objective 2: Electrode Selection
Consider the type of material, thickness, welding position, required strength, and appearance of the weld.
Common Electrodes
Objective 2: Electrode Selection
E6010: Deep penetration, used for root passes.
E6011: Similar to E6010 but can be used with AC.
E7018: Low-hydrogen, all-position, smooth weld bead.
Storage
Objective 3: Electrode Storage and Handling
Store electrodes in dry, temperature-controlled environments to prevent moisture absorption, which can cause weld defects.
Handling
Objective 3: Electrode Storage and Handling
Follow manufacturer guidelines to avoid contamination and ensure proper usage.
Q: What does the classification “E6010” signify for electrodes?
Q&A: Obj 1
A: “E” stands for Electrode, “60” for 60,000 psi tensile strength, “1” for all positions, and “0” for cellulose sodium coating.
Q: What factors should be considered when selecting electrodes?
Q&A: Obj 2
A: Consider the type of material, thickness, welding position, required strength, and appearance of the weld.
Q: What are common uses for E6010 electrodes?
Q&A: Obj 2
A: E6010 electrodes are used for deep penetration and root passes.
Q: What are the characteristics of E6011 electrodes?
Q&A: Obj 2
A: E6011 electrodes are similar to E6010 but can be used with AC and are good for vertical and overhead welding.
Q: What are the properties of E7018 electrodes?
Q&A: Obj 2
A: E7018 electrodes are low-hydrogen, all-position electrodes that produce a smooth weld bead with minimal spatter.
Q: How should electrodes be stored to prevent moisture absorption?
Q&A: Obj 3
A: Store electrodes in dry, temperature-controlled environments.
Q: What precautions should be taken when handling electrodes?
Q&A: Obj 3
A: Follow manufacturer guidelines, avoid contamination, and ensure proper usage to maintain electrode integrity.
