Core Applications

1. 3C electronic components:Deburring, matte finishing and removal of die-casting film on aluminum-magnesium alloy middle frames, casings and heat dissipation parts for mobile phones, laptops and tablets.

2. New energy auto parts:Cleaning gates, flash and oxide layers of battery pack housings, motor end covers, die-cast brackets and small wheel parts to improve coating adhesion.

3. Aerospace precision parts: Surface finishing for lightweight aluminum-magnesium alloy structural parts and fasteners.

4. Hardware die-casting products: Home appliance casings, fishing gear fittings and other aluminum-magnesium die-cast hardware to standardize surface roughness for follow-up anodizing, spraying and electroplating.

5. Medical device lightweight components: Safe and dust-free surface treatment for medical instrument shells and alloy brackets.

6. Rail transit lightweight parts: Rust and oxide removal for small aluminum-magnesium structural components of train carriages for mass standardized pre-treatment.

7. FAQs:

8. Q1: Why is explosion-proof design required for shot blasting aluminum-magnesium alloys?

9. Aluminum and magnesium are highly reactive metals. During shot blasting, fine metal dust is generated and suspended in the air. When the dust concentration reaches the explosive limit and encounters an ignition source (static electricity, sparks, high temperature), it can trigger violent dust explosions. An explosion-proof design eliminates ignition risks and controls dust concentration to prevent combustion and explosion accidents.

10. Q2: What core explosion-proof technologies are applied in this equipment?

11. The machine integrates multiple protective measures: fully sealed cabin structure, explosion venting panels, anti-static wear-resistant liners, conductive blasting media, electrostatic grounding systems, inert gas protection (optional), explosion-suppression dust collectors, and temperature-monitoring electrical components. All electrical parts comply with explosion-proof grade standards.

12. Q3: What types of blasting media are suitable for aluminum-magnesium alloy workpieces?

13. Non-sparking, conductive abrasives are strictly required. Common options include stainless steel shots, aluminum oxide pellets, and specially treated glass beads. Carbon steel shots and ferrous media that may produce spark impacts are prohibited. The media must maintain good conductivity to avoid static charge accumulation.

14. Q4: What international explosion-proof standards does the equipment comply with?

15. Standard configurations meet ATEX 2014/34/EU (Zone 21/22) and IECEx standards for dust explosion protection. Optional certifications include NFPA 654 (US combustible dust standard) and GB 15577 (China dust explosion-proof safety code) according to regional requirements.

16. Q5: How does the machine control dust concentration inside the blasting chamber?

17. It adopts a high-volume explosion-proof dust extraction system with constant airflow monitoring. The system maintains negative pressure inside the cabin at all times, continuously filters metal dust, and keeps dust concentration well below the lower explosive limit (LEL). A real-time dust concentration detector triggers an alarm and automatic shutdown when the threshold is exceeded.

18. Q6: What is the difference between an explosion-proof shot blaster and an ordinary one?

19. The key differences lie in: fully enclosed anti-static cabin design, explosion venting and suppression devices, intrinsically safe electrical systems, conductive and spark-free media circulation, dedicated explosion-proof dust collectors, and electrostatic grounding for all components. Ordinary models lack these ignition-prevention and explosion-mitigation features.

20. Q7: What routine maintenance is critical for explosion-proof performance?

21. Key maintenance items include: regular inspection of explosion venting panels for damage, verification of electrostatic grounding continuity, cleaning and replacement of dust filter cartridges, check of anti-static liner wear, calibration of dust concentration sensors, and testing of over-temperature and over-pressure protection devices.

22. Q8: Can the machine process workpieces other than aluminum-magnesium alloys?

23. Yes. It is also suitable for other light alloys and combustible metal workpieces such as titanium alloys, zinc alloys, and pure aluminum parts. However, when switching between different metal materials, the blasting media and dust collection system must be thoroughly cleaned to avoid cross-contamination and mixed dust risks.

24. Q9: How is static electricity eliminated during the blasting process?

25. Static control measures include: anti-static rubber or metal liners on the cabin interior, conductive blasting media, full electrostatic grounding of the machine body and workpiece hanger, static eliminators at the media inlet and outlet, and humidity control devices (optional) to reduce charge accumulation in dry environments.

26. Q10: What workpiece sizes and production capacities are available?

27. Standard models cover workpiece dimensions from small precision castings (≤500mm) to large structural parts (up to 3000mm). Production capacity ranges from batch-type tumble belt machines (50–300 kg/batch) to continuous overhead rail systems (50–500 pieces/hour). Customized solutions are available based on workpiece geometry and throughput requirements.