Cast Aluminum Explosion Proof Junction Box

 Low risk of secondary ignition

The cast aluminum explosion-proof distribution boxes manufactured by our factory adopt high-purity silicon-based cast aluminum alloy raw materials without impurity heavy metals that are easy to generate sparks. Collision or friction between box shells hardly produces high-energy friction sparks, which avoids secondary ignition sources caused by external object impact on the box body.

The box body is integrally cast without splicing welds. In case of deflagration caused by internal circuit faults, the shell will not crack, preventing cascading explosion accidents and helping factories pass third-party safety assessments smoothly.

 Superior seismic durability

The shell is integrally formed by die casting or gravity casting. The toughness of the product is far higher than that of brittle cast iron and welded carbon steel boxes. When the explosion-proof distribution box is used under long-term vibration working conditions, it is not prone to cracking and deformation, featuring a longer service life and reducing losses brought by equipment replacement.

 Multi-layer anti-corrosion treatment for longer salt spray resistance

The aluminum substrate can naturally form a dense oxide film. Combined with shot blasting and high-voltage electrostatic thick-film plastic spraying, the salt spray test time can reach more than 500 to 800 hours. When applied in offshore platforms, riverside chemical plants and biogas areas of sewage treatment plants, the shell will not rust and perforate, nor will the sealing grooves corrode and leak water within 8 to 15 years.

High reliability of explosion-proof sealing

Aluminum alloy features good machinability, enabling the flameproof joint to achieve higher surface finish with uniform and stable flameproof gaps, which strictly complies with the pressure relief and flame extinguishing explosion-proof mechanism specified in GB3836. Matched with aging-resistant fluororubber gaskets, the IP65 and IP66 protection grades can be maintained effectively. It stops open flames from leaking out as well as dust, rainwater and other substances from entering the cavity to guarantee stable operation of the power distribution system.

 Light weight and high strength

Cast Aluminum Explosion Proof Junction Boxes with the same volume weigh one-third of cast iron boxes and stainless steel boxes. Structural optimization realizes light weight without sacrificing explosion-proof bearing strength. During mass assembly, there is no need to worry about the weight of the boxes, which cuts costs of construction hoisting and manual assembly, and saves logistics expenses simultaneously.

ADC12 (Die Casting)

ADC12 is the most widely used material for Cast aluminum Explosion Proof junction Boxes. It can be applied to cast complex box structures with excellent forming performance for ribs and studs. It has a nice surface appearance and delivers better results after powder coating.

Grades: ADC12, YL113, 383.0 (UNS A03830), EN AC-4600, AlSi11Cu3

A380 (Die Casting)

A380 possesses good fluidity during high-pressure die casting and is suitable for boxes with complex structures. Its tensile strength is approximately 324MPa and Brinell hardness is 80HB. It has slightly higher strength, vibration resistance and explosion pressure bearing capacity compared with ADC12.

ADC11 (Die Casting)

This material contains no copper or zinc, featuring better corrosion resistance and favorable air tightness than ADC12, yet its strength is relatively lower. This material can be selected for scenarios requiring high corrosion resistance without high strength requirements.

Grades: YZAlSi12, ADC11, A413.1 (UNS A04131), EN AC-47100, AlSi12, АК12

ADC3 (Die Casting)

ADC3 contains magnesium element and boasts superior strength and explosion-proof performance over ADC12. Nevertheless, its die casting processing difficulty is higher than ADC12, leading to a slightly higher cost. It is mainly adopted for IIC high-grade explosion-proof boxes.

Grades: ADC3, YL104, A360.0 (UNS A03600), EN AC-44200, AlSi10Mg

A356 (Gravity Casting)

A356 is copper-free and generates few pores during gravity casting. It obtains high strength after T6 heat treatment, with corrosion resistance far better than ADC12 and A380. It is a commonly used material for high-end explosion-proof shells.

Grades: A356, ZL101A, EN AC-42100

ZL02 (Gravity Casting)

This material is relatively soft in texture but owns strong corrosion resistance. It is generally only used for large-size, low-pressure and non-high-risk explosion-proof boxes.

Grades: ZAlSi12, 413.0 (UNS A04130), EN AC-44100, AlSi12, AJ12

ZL04 (Gravity Casting)

ZL04 aluminum alloy has comparable advantages to YL104 aluminum alloy with high toughness and high strength, which is the most commonly used material for gravity-cast aluminum explosion proof junction boxes.

Grades: ZAlSi9Mg, 360.0 (UNS A03600), EN AC-43300, AlSi9Mg

Explosion-proof distribution boxes are mandatory for distribution box deployment in flammable and explosive areas. Besides, cast aluminum explosion proof junction boxes are also adopted in ordinary outdoor anti-corrosion areas.

 Oil and gas energy stations

Gas stations, filling stations, refinery plants, oil and gas transmission pipe galleries, oil loading areas and offshore oil and gas platforms. The air contains combustible gases such as gasoline and natural gas. Coupled with the coastal salt fog environment, cast aluminum explosion proof junction boxes can deliver both anti-corrosion and explosion-proof effects.

 Chemical and coating production workshops

Fine chemical device areas, reactor pump rooms, paint spraying and baking booths, ink and paint blending workshops, and pharmaceutical organic solvent working sections. These locations are classified as Zone 2 explosion-proof environments filled with acetone, xylene and ethyl alcohol.

 Dust processing workshops

Processing workshops for flour, feed, coal powder, plastic powder and lithium battery powder raw materials. Dust is also an explosive medium. Dust-proof explosion-proof boxes feature impact resistance and rust resistance to match such working conditions.

 Sewage and biogas treatment facilities

Anaerobic tanks of sewage plants, biogas collection systems, biogas power generation equipment and local control cabinets for plant sewage pumps. Cast aluminum products resist water vapor corrosion and fit working conditions with high humidity, methane and trace corrosive water vapor.

 Coastal docks and port-side chemical industrial parks

Chemical docks, coastal pump houses and power distribution positions on seaside trestles. Coastal areas have severe salt fog. The shells treated with processes including plastic spraying have superior salt fog resistance and longer service life.

 Surroundings of new energy equipment and various power units

Hydrogen refueling stations, landfill biogas projects, local control boxes for fans, compressors and pump units. Distribution boxes mounted on devices bear continuous vibration, while cast aluminum features high toughness and is not easy to crack.