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EMFI tools are made of copper alloy. Due to the good thermal conductivity of copper and its characteristic of being almost carbon-free, the heat generated in a short time when the tool rubs against or impacts an object is absorbed and conducted. Another reason is that copper itself is relatively soft, providing good compliance during friction and impact, making it difficult to produce tiny metal particles, so we hardly see any sparks. Therefore, explosion-proof tools are also called non-sparking tools. The materials for explosion-proof tools are beryllium bronze and aluminum bronze. Beryllium bronze alloys and aluminum bronze alloys do not spark upon impact or friction, making them very suitable for manufacturing safety tools used in explosive, flammable, strong magnetic, and corrosive environments. BeA-20C alloy withstands an impact energy of 561IJ in hydrogen containing 30% or in methane-air-oxygen mixtures containing 6.5-10%, without sparking or ignition after 20 impacts.

EMFI tool applications

Petroleum refining and petrochemical industries, coal mines, oil fields, natural gas chemical industry, explosives industry, synthetic fiber industry, paint industry, fertilizer industry, various pharmaceutical industries. Oil tankers and liquefied petroleum gas vehicles, aircraft, warehouses handling flammable and explosive materials, electrolysis workshops, communication equipment assembly workshops, locations requiring tools that are rust-proof, wear-resistant, and non-magnetic, etc. Striking box wrenches, striking hex wrenches, bent-handle striking box wrenches, bent-handle striking hex wrenches, straight-handle convex striking box wrenches, bent-handle convex striking box wrenches. Striking open-end wrenches, single-head open-end wrenches, pry-bar open-end wrenches, straight-handle box wrenches, bent-handle box wrenches, pry-bar box wrenches, double-head open-end wrenches, double-head box wrenches, combination wrenches, universal wrenches, adjustable hook wrenches, hook wrenches, adjustable wrenches, C type wrenches, single-head drum key wrenches, double-head drum key wrenches, universal drum key wrenches, F type wrenches, square-head F type wrenches, anti-slip F type wrenches, reinforced claw-type valve wrenches. American pipe wrenches, British pipe wrenches, light-duty chain wrenches, belt wrenches, wire cutters, pincers, water pump pliers, slip-joint pliers, locking pliers, diagonal cutting pliers, flat-nose pliers, needle-nose pliers, angled cutting pliers, snap-ring pliers (internal/external). Octagonal hammers, German-style octagonal hammers, rust-removal hammers, ball-peen hammers, mechanic's hammers, claw hammers, inspection hammers, flat-tail inspection hammers, nail pullers. Safety axes, axes, pickaxes, anvils, plumb bobs, slotted screwdrivers, Phillips screwdrivers, striking screwdrivers, clamp-handle screwdrivers, T type screwdrivers, double-ended screwdrivers, awls, hand needles, listening probes, hacksaw frames, saw blades, coping saws, crowbars, tool sets.

EMFI tool classification

Explosion-proof tools are internationally known as "safety tools" and "non-sparking tools," and domestically known as "explosion-proof tools." Explosion-proof tools produced, sold, and distributed in China can be divided into two main categories based on material: 1. Aluminum-copper alloy (commonly known as aluminum bronze) explosion-proof tools. The specific material is a copper-based alloy composed of high-purity electrolytic copper as the base, with appropriate amounts of aluminum, nickel, manganese, iron, and other metals added. 2. Beryllium-copper alloy (commonly known as beryllium bronze) explosion-proof tools. The specific material is a copper-based alloy composed of high-purity electrolytic copper as the base, with appropriate amounts of beryllium, nickel, and other metals added. Both materials have excellent thermal and electrical conductivity. After heat treatment, the hardness and wear resistance of aluminum bronze are nearly identical to those of beryllium bronze, both reaching above HRC30o. Beryllium bronze is non-magnetic and can be used in strong magnetic field environments. Explosion-proof tools can also be divided into two main categories based on manufacturing process: 1. Casting process: This is a traditional manufacturing process and was the internationally common technology for manufacturing explosion-proof tools in the 80s. Most domestic explosion-proof tool manufacturers have continued to use this process to this day. Advantages of the casting process: simple process, low manufacturing cost. Disadvantages: lower product density, hardness, tensile strength, and torque; more pores and sand holes, resulting in shorter product service life. 2. Forging process: The latest international manufacturing process, using large presses or punch presses combined with high-heat-resistant forming molds to forge in a single step. Advantages of the forging process: significantly increases product density, hardness, tensile strength, and torque; basically eliminates pores and sand holes, extending the mechanical performance and service life of the product by about 1 times compared to the traditional casting process. Disadvantages: higher investment in equipment and molds, resulting in higher costs.

EMFI tool usage

1) Explosion-proof tools provide safety assurance for workers in flammable, explosive, and corrosive work environments, enhancing social safety and allowing workers to operate with greater peace of mind. After daily use, explosion-proof tools should undergo proper maintenance, which is crucial for their lifespan. Improper maintenance may prevent the tools from serving us for a long time. First, store the tools in a dry place to prevent damage to working parts. In daily work, after continuous striking 20 times, surface attachments on the tools should be cleaned off before further use. Do not use continuously to avoid overheating due to prolonged friction, which may damage the tools. 2) After use, clean surface dirt and deposits, and store in a dry, safe place. 3) Striking tools must not be used for continuous impacts; there should be appropriate intervals after more than ten strikes. Timely remove debris adhering to the product before continuing use. 4) Wrench products must not be used with excessive force. Do not use sleeves or bind other metal rods to extend the lever arm, nor use a hammer to strike (except for striking wrenches) to tighten fasteners. 5) Cutting-edge tools should be gently touched to a grinding wheel in a water trough for sharpening. Do not apply excessive force or contact the grinding wheel for too long. 6) In actual operation with striking tools, clear site debris and corrosive oxides from the work surface to prevent third-party impacts. Based on the above performance and usage, aluminum-copper alloys are more suitable for normal pressure equipment and environments with less stringent explosion-proof requirements (such as gas stations, small oil depots, etc.). Beryllium-copper alloy explosion-proof tools are suitable for more demanding environments (such as refineries, gas transfer stations, gas production plants, drilling teams, etc.). 7) Before using various products, remove surface oil stains and use according to the instructions for steel tools.

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