Why use explosion-proof tools?

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Traditional steel tools can generate dangerous mechanical sparks during use due to friction, collisions, and other factors. In environments prone to fire and explosion hazards (such as oil storage, transportation, loading/unloading, and maintenance operations), this can easily lead to fires and explosions. Therefore, explosion-proof tools are a type of tool used in flammable and explosive hazardous areas to replace tools made of steel or similar materials, ensuring operational safety. Explosion-proof tools are usually made of copper-based alloys. Common copper-based alloys used for such tools include beryllium bronze, aluminum bronze, and J892 copper alloy. This includes, but is not limited to, single/double-ended ratchets, chisels, round/octagonal hammers, adjustable wrenches, bucket lid wrenches, pipe clamps, slotted/crosshead screwdrivers, single/double-ended Allen keys, pliers, wire cutters, claw hammers, and other tools. Not all copper tools can be considered explosion-proof tools; since their composition and impurities affect their explosion-proof properties, such tools must pass relevant tests (such as drop-weight tests in explosive gas environments). Steel has poor thermal and electrical conductivity, and the heat generated by impacts as well as the static electricity produced by friction tend to accumulate, resulting in sparks. Aluminum and magnesium alloy tools do not easily generate sparks upon impact, but they are chemically reactive. Copper and iron have similar properties, but the spark energy generated when copper tools are struck or rubbed is usually lower than that of iron tools. Copper has good thermal and electrical conductivity, and pure copper meets the explosion-proof requirements best; however, its hardness and strength are relatively low, failing to meet the mechanical requirements for such materials. Therefore, elements such as beryllium, aluminum, titanium, and nickel are usually added to create copper-based alloys in order to enhance their strength and stiffness. No explosion-proof tool can completely eliminate the generation of sparks; it can only reduce the risk of sparks being produced by the tool. Under certain special conditions, the use of explosion-proof tools must be determined based on the actual situation on site.