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  • Explosion-proof tools, explosion-proof wrench, steel tools, explosion-proof pliers_Hebei zhongtai explosion-proof tools co. LTD

    Six maintenance issues of explosion-proof tools

    Jun 15, 2019
    DESCRIPTION

    Six maintenance matters of explosion-proof tools:

    1. All explosion-proof tools shall be cleaned of surface grease before use, and cleaned of surface grease and accumulation after use. They shall be stored in a dry place, isolated from corrosive substances.

    2. Striking tools are not allowed to strike continuously. There should be appropriate intervals for more than 10 times. In the actual operation of knocking and smashing tools, debris and corrosive oxides on the working face should be removed in time to prevent third party collision and explosion.

    3. Copper alloy explosion-proof tools are made of high-purity electrolytic copper and precious and rare metals. The surface of aluminum bronze explosion-proof tools is silver yellow. Face HRC25 above hardness, tensile strength of the delta b75-85 KGF/was, in the flammable gas ethylene concentration (7.8%) environment homework, blunt (hit), friction, drop all does not produce sparks explosion, explosion-proof grade GBEx Ⅱ B standard. Beryllium bronze explosion-proof tool made of tools, the surface is golden. Face HRC35 above hardness, tensile strength of the delta b105-120 KGF/was, in the flammable gas hydrogen concentration (21%) environment, blunt (hit), friction, drop all does not produce sparks explosion, explosion-proof grade GBEx Ⅱ C standard.

    4. The cutting edge tools should be placed in the water trough to gently contact the grinding wheel for grinding, not too hard or too long contact with the grinding wheel.

    5. In rock work, hammer tools should be used to float the work place they come into contact with with water. All kinds of explosion-proof tools should be handled carefully before and after use.

    6. Striking wrench tools shall not be used with excessive force, and casing or binding other metal bar materials shall not be used to lengthen the force arm, and hammer (except striking wrench) shall be used to avoid overload fracture and deformation, affecting normal use. Should choose its breed specification reasonably according to need when using tool, cannot with small generation big, cannot regard it as steel tool to undertake using more. It should be pointed out that in the use of adjustable wrench, pipe pliers, wrench, should pay attention to the force direction requirements, not arbitrary rotation, in the use of tools with edges, should first determine the hardness of the workpiece itself, when its hardness is lower than the hardness of the tool, can be operated, when its hardness is higher than the hardness of the tool is forbidden to use. When the workpiece is mechanically tightened, semi-permanently fixed or corroded, and no other measures are taken before the use of hand tools, it shall be prohibited to avoid damaging the tools.

    The surface of the explosion-proof tool is polished and polished, and the active metal molecules on the surface are exposed to the air and soon oxidize and turn black, and then rust. This is because the water film left on the surface of the parts after cleaning forms a layer of electrolyte solution necessary for electrochemical corrosion. Although the degree of ionization of water is small, it can still be ionized into hydrogen ions and hydroxide ions. This ionization process is accelerated with the increase of temperature. At the same time, there are dissolved carbon dioxide and sulfur dioxide in the water, which are easily combined with water.

    Iron and its impurities are soaked in a solution of various ions, such as hydrogen ions, hydroxide ions and carbonate ions, to form a corrosive battery. Iron is the anode and impurities are the cathode. Normally, a film of water contains oxygen, and the iron in the anode is oxidized to ferrous ions.

    From this point of view, it is necessary to remove oil before finishing and dehydrate and dry and prevent rust after finishing explosion-proof tools and pliers. The main ingredients of rust-proof oil are lanolin, barium petroleum sulfonate, sodium petroleum sulfonate and additives.


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