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Basic Knowledge of Explosion-Proof Tools

10th. June, 2020
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Tool Set-10pcs manufacturer shares this news for you.

Explosion proof hand tools use beryllium bronze and aluminum bronze as raw materials. Beryllium bronze alloy and aluminum bronze alloy do not generate sparks when impacted or rubbed, which is very suitable for manufacturing in explosive, flammable, strong magnetic and corrosion Safety tools used in sexual situations. BEA-20C alloy withstands the impact energy of 561IJ in 30% oxygen or 6. 5-10% methane-air oxygen. After 20 shocks, no sparks or combustion occur.

Due to the good thermal conductivity of copper and the almost carbon-free nature, the heat generated in a short time when tools and objects are rubbed or impacted is absorbed and conducted. Another reason is that copper itself is relatively soft, and there is a lot of friction and impact. With good concession, it is not easy to produce tiny metal particles, so we can hardly see sparks, so explosion-proof tools are also called non-sparking tools. The main scope of application is: petroleum refining and petrochemical industry, coal mine, oil field, natural gas chemical industry, chemical fiber industry, paint industry, fertilizer industry, various pharmaceutical industries. Petroleum wheels and liquefied petroleum gas vehicles, airplanes, warehouses that handle flammable and explosive products, electrolysis workshops, communication machine assembly workshops, places requiring tools that are not rusty, wear-resistant and anti-magnetic. Ordinary tools and carbon steel pipe bolts will generate static electricity and impact sparks when they are in contact and impact, and cannot be used in flammable and explosive places. Impacts with carbon steel will not generate static electricity and sparks and play an explosion-proof role. Explosive locations. Use explosion-proof tools. Explosion-proof tools are mainly used for the installation and maintenance of large-scale mechanical equipment, machinery manufacturing equipment, large-scale petrochemical equipment, mining equipment, pipeline equipment, etc. In addition, they are also used on pressure vessels.

Explosion Proof Hand Tools

Explosion Proof Hand Tools 

The materials of explosion-proof tools include:

1. Beryllium bronze

5%。 Beryllium bronze is a steel base gold with beryllium as the basic alloy element, and its beryllium content is 1-2.5%. It also contains trace cobalt, magnesium, iron, and other trace elements.

When beryllium bronze is subjected to high-speed impact or high-speed friction, its mechanical energy is converted into heat energy when it acts on the surface of the object, and the surface temperature suddenly increases. However, due to its high electrical conductivity and thermal conductivity, the heat on the working surface is quickly transferred to other parts of the workpiece, and the heat on the working surface is drastically reduced. The temperature of some particles that leave the workpiece under impact or friction also reaches Less than the temperature of the ignition source. The compounds between the beryllium bronze metal are relatively stable, and the melting point is high, which is not easy to oxidize violently. During high-speed impact or friction, although the temperature of the affected surface or some detached particles has increased, they can not undergo a violent oxidation reaction with oxygen and other combustible gases, and cannot form an ignition source. This material is widely used in the manufacture of important parts and components on certain special occasions.

2. Aluminum bronze

There are two types of commonly used aluminum-bronze: one is that when the A1 content is less than 9.4%, the metallography is a dendritic single-a solid solution (A1 solid solution in Cu), and the other is that when the Al content is 1.8-9.4%, its structure It is: a + β 1 + a small amount of a + γ 2.

Its thermal conductivity is very good, most of the heat generated when it collides with other objects is absorbed by the tool and dissipated. The ground particles have a lower heat and will not cause an explosion of the mixture of air and combustible substances.

3. J892 copper alloy

J892 copper alloy explosion-proof tools are suitable for all kinds of explosive gas at all levels. In general production, the hardness of J892 copper alloy material is higher than that of beryllium bronze material after treatment, and it is closer to the hardness of steel tool products. At present, the toughness of J892 copper alloy can not reach the level of steel tools, so J892 copper alloy explosion-proof tools cannot be overloaded during use, and it is impossible to add a sleeve to the wrench to extend the force arm or use a hammer to hit the handle. operation. Do not mix J892 copper alloy with corrosive materials such as acid and alkali to prevent corrosion.