Welding rod quality inspection method

The quality of welding rods is crucial to the welding effect, so it is very important to learn how to distinguish the quality of welding rods. The following are several simple ways to test the quality of welding rods:

Actual weld inspection
The quality of welding rods can be tested by actually welding welds. Good quality welding rods have extremely stable arc burning during welding, uniform melting of welding core and coating, little spatter, good weld formation, and easy slag removal.

Coating strength inspection
Hold the welding rod horizontally one meter high and let it fall freely onto a smooth thick steel plate. If the coating does not fall off, it proves that the coating strength meets the quality requirements.

Appearance inspection
Check whether the coating surface is smooth and delicate, whether there are pores and mechanical damage, whether the coating is eccentric, and whether the welding core is corroded.

Physical and chemical inspection
When welding important weldments, physical and chemical inspections may be required to ensure that the chemical composition and mechanical properties of the welding rod meet the requirements.

The above methods can help you make a preliminary judgment on the quality of welding rods, but in actual applications, you should also select appropriate welding rods according to specific welding requirements and standards, and operate in strict accordance with relevant specifications.

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