API RP 7G-2, also known as the “Recommended Practice for Inspection and Classification of Used Drill Stem Elements,” is a crucial document in the drilling industry. It meticulously outlines the required inspection levels, detailed procedures, and testing methods for used drill stem components.
[pdf] The waste hot recovery equipment introduces high-temperature circulating oil and high-temperature compressed air into the heat water unit. The heat generated during the operation of the air compressor is fully absorbed by the water heater. And the compressor can be cooled down at the same time.
[pdf] Heat treatment for rock drilling tools typically involves processes such as annealing, normalizing, quenching, and tempering. These techniques greatly enhance the tool’s hardness, wear resistance, strength, and toughness, ensuring optimal performance even in demanding working conditions.
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