What Is a Metal Shot Blasting Machine? | STR Strong Makine
A metal shot blasting machine is an industrial surface preparation system that propels abrasives such as steel shot, grit, or granules at high velocity against metal surfaces to remove rust, mill scale, welding slag, and corrosion residues. STR Strong Makine, founded in 2023 by a team combining 20 years of industry experience, manufactures hanger-type, tumble belt, and sheet & profile shot blasting machines engineered to transform your surface treatment operations.
What Is a Metal Shot Blasting Machine?
Metal shot blasting machines are high-performance industrial systems used to prepare metal surfaces prior to painting, coating, or welding operations. The turbines at the core of the machine propel steel shot or grit at velocities of several hundred meters per second. The impact force strips all contaminants from the surface and creates a clean, profiled surface at the Sa 2.5 standard.
The resulting surface roughness dramatically increases the adhesion strength (anchorage) of applied paints and coatings, directly extending the corrosion resistance and service life of the final product. It is an indispensable process in dozens of sectors including automotive, foundry, steel construction, shipbuilding, and defense industries.
How Does a Metal Shot Blasting Machine Work?
The operating principle consists of three core steps:
- Loading: Metal parts are loaded into the machine via hanger, tumble belt, or conveyor system.
- Blasting: High-speed turbines propel abrasive media homogeneously across every surface.
- Recovery: Used abrasive is collected by the elevator and separator system, cleaned, and recirculated.
This closed-loop system prevents material waste and ensures consistently high cleaning quality throughout the production cycle.
What Types of Metal Shot Blasting Machines Are Available?
Hanger Shot Blasting Machine (AK Series)
Hanger Shot Blasting Machine, Ideal for large, heavy, and geometrically complex components. Parts are suspended on a hanger system and rotated inside the blasting cabin while turbines deliver uniform abrasive coverage to every surface. Widely used in foundry, steel construction, and automotive sectors. Strong Makine offers six models from AK-0 to AK-5, covering basket diameters from 900 mm to 2250 mm.
Tumble Shot Blasting Machine / Rubber Belt (LTK Series)
Tumble Shot Blasting Machine, Designed for small and medium-sized bulk parts such as bolts, nuts, washers, and small castings. The flexible rubber belt prevents part-to-part damage while delivering homogeneous and precise surface treatment. Two models are available: LTK-100 (100 kg capacity) and LTK-300 (300 kg capacity).
Sheet and Profile Shot Blasting Machine (Conveyor Type)
Sheet and Profile Shot Blasting Machine, Operates on a continuous conveyor principle; sheet metals, I/H profiles, and structural steels are fully cleaned of rust, scale, and corrosion in a single pass. Engineered for shipbuilding, steel construction, and pipeline manufacturing. Available with standard pass widths from 1000 mm to 3500 mm, with custom engineering options.
Why Choose STR Strong Makine Shot Blasting Equipment?
- Manganese steel internal liners: Superior abrasion resistance and extended machine lifespan.
- Energy-efficient turbines: Low kWh consumption, high granule flow rate (100–240 kg/min).
- Closed-loop abrasive recovery: Minimizes consumable costs and waste.
- Jet-Pulse filtration system: Complies with environmental and occupational safety regulations.
- Full after-sales technical support: From project scoping to post-delivery service.
- 20 years of sector expertise: Machines built by founders with deep industry know-how.
Frequently Asked Questions -FAQ
What is the difference between a shot blasting machine and sandblasting?
Sandblasting (compressed air with sand) is an open system that generates significant dust and uses single-use abrasive. Shot blasting machines use steel shot in a closed-loop system that recirculates abrasive, producing far less dust, greater efficiency, and a more consistent surface profile. Shot blasting is significantly safer for operators and the environment.
What surface cleanliness standard does a shot blasting machine achieve?
STR Strong Makine’s shot blasting machines can achieve Sa 2.5 (Near White Metal Blast) and Sa 3 (White Metal Blast) cleanliness grades per ISO 8501-1. These are the required standards for maximum adhesion of paints, epoxy coatings, and protective layers.
Which industries use metal shot blasting machines?
The primary industries include automotive and tier-one suppliers, foundries, steel construction, shipbuilding, defense, agricultural machinery, fastener manufacturing (bolts/nuts), and pipeline fabrication.
How often should a shot blasting machine be serviced?
Daily checks should cover filter cleaning and abrasive level. Weekly inspections should include turbine blades and internal liners. Strong Makine machines equipped with manganese steel liners have significantly longer replacement intervals compared to standard rubber or mild steel alternatives.
Does STR Strong Makine manufacture custom-sized shot blasting machines?
Yes. In addition to the standard AK-0 through AK-5 and LTK-100/LTK-300 models, the sheet and profile series offers pass widths from 1000 mm to 3500 mm with fully custom engineering and manufacturing. Contact our expert team for a tailored solution for your facility.
People Also Ask (PAA)
How much does a shot blasting machine cost?
Prices vary depending on machine type (hanger, tumble, profile), capacity, and custom engineering requirements. Contact the STR Strong Makine sales team for an accurate quotation tailored to your project specifications.
What abrasive media is used in shot blasting machines?
Steel shot, steel grit, or stainless steel shot are the most common abrasives. The selection depends on the target surface profile (Ra value), the base material, and the downstream coating specification.
How long does the shot blasting process take?
Process time varies by part size, machine capacity, and target cleanliness level. Small bulk parts processed in tumble machines are typically completed in 15–30 minutes; large components in hanger systems may require longer cycles.
Are shot blasting machines safe?
Strong Makine shot blasting machines are equipped with integrated Jet-Pulse filtration and dust collection units. The fully enclosed operating environment and CE-compliant safety features ensure compliance with occupational health and safety regulations.
If you enjoyed our article titled “What Is a Metal Shot Blasting Machine?“, visit our News page for more content.
Contact us for information about Strong Makina.