About the production materials of explosion-proof tools
explosion-proof tools are mainly used in what areas?, suitable for petroleum refining and petrochemical industry, coal mines, oil fields, natural gas chemical industry, gunpowder industry, chemical fiber industry, paint industry, fertilizer industry, various pharmaceutical industries.
explosion-proof tools J892 copper alloy J892 copper alloy explosion-proof tools are suitable for all levels of explosive gas use. In general production, the hardness of J892 copper alloy material after disposal is higher than that of beryllium bronze material, which is closer to the hardness of steel goods. At present, the resistance of J892 copper alloy cannot reach the level of steel materials, so J892 copper alloy explosion-proof tools cannot be overloaded in use, let alone wrench with sleeve to extend the moment arm or hammer at the handle for percussion. Do not mix J892 copper alloy explosion-proof tools with acid, alkali and other corrosive items to prevent corrosion.
There are two kinds of aluminum bronze commonly used in making explosion-proof tools: one is that the metallographic phase is dendritic single α-phase solid solution (solid solution of Al in Cu) when the Al content is less than 9.4%, and the other is that when the Al content is 1.8-9.4%, the arrangement is: α +β1 + a few α + & gamma;2. It has excellent thermal conductivity, and most of the heat generated when it collides with other objects is absorbed and dissipated. The particles under grinding have low heat and do not cause explosion of the mixture of air and combustible substances.
beryllium bronze is based on beryllium as the basic alloying element of steel base gold, the content of beryllium is 1-2.5%. Together, it is rich in trace amounts of cobalt, magnesium, iron and other trace elements. Beryllium bronze in high-speed impact or high-speed conflict, its mechanical energy in the effect to the appearance of the object is converted into heat energy, the appearance of a sudden rise in temperature. However, due to its high conductivity and heat conduction string, the heat of the working surface is transferred to other parts of the workpiece, and the heat of the working surface is drastically reduced. Some particles that detach from the workpiece under the effect of impact or collision also have a temperature that does not reach the temperature of the ignition source. Beryllium bronze intermetallic compounds are relatively stable, and the melting point is high, not easy to violent oxidation. During high-speed impact or conflict, although the temperature of some detached particles on the surface of the effect may rise, they cannot have a violent oxidation reaction with oxygen and other combustible gases, thus forming no ignition source. The steel material has high strength and hardness, which is suitable for the manufacture of explosion-proof tools, and the strength and hardness of the steel increase with the increase of carbon content. However, the study of the mechanism of friction sparks in steel materials shows that it is precisely the carbon contained in steel that is the source of friction sparks. In order to eliminate the friction of tools and impact sparks, people turned the direction of material selection to steel. However, the strength and hardness of pure copper are too low to be directly used as an explosion-proof tool. It is necessary to add appropriate elements such as beryllium, aluminum, titanium, nickel, magnesium and the like to melt into a copper-based alloy to improve its strength and hardness. However, when the strength and hardness are improved, the second characteristic of the aforementioned steel on explosion-proof tools is in danger of weakening or disappearing. As a result, people further explore the "best of both worlds" technical approach. This is the requirement of the prepared copper-based alloy at room temperature with high strength and hardness, once by friction, impact, the temperature rises to a certain extent, the copper-based alloy of the gold-phase tissue phase change and transformed into low strength and plastic deformation and even wear and tear. At this time, the metal friction resistance on the local friction surface decreases, and the maximum temperature of friction and impact is limited below the alloy phase change temperature, which becomes an explosion-proof alloy that cannot ignite the mixture.
Any kind of tool should be properly maintained after use to extend its service life. Explosion-proof tools are also critical for maintenance. Improper maintenance after use will cause errors in all aspects of the tool. The following editor will introduce how to use explosion-proof tools and maintenance methods.
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