What are the advantages and disadvantages of the shot blasting

Shot blasting is also the name of a mechanical surface treatment process, similar to sand blasting and shot blasting. Shot blasting is a cold treatment process, which is divided into shot blasting cleaning and shot blasting strengthening. As the name suggests, shot blasting cleaning is to remove impurities such as surface oxide to improve the appearance quality. Shot blasting strengthening is to use high-speed moving projectile (60-110m/s) flow to continuously impact the surface of the workpiece to be strengthened. The surface and surface layers of the target (0.10-0.85mm) are forced to undergo the following changes during cyclic deformation: 1. The microstructure was modified; 2. The non-uniform plasticized outer surface introduces residual compressive stress, and the inner surface produces residual tensile stress; 3. External surface roughness changes (RaRz). Impact: It can improve the fatigue fracture resistance of materials/parts, prevent fatigue failure, plastic deformation and brittle fracture, and improve fatigue life.

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Principle of shot blasting process:
Shot blasting means that the shot material (steel shot) is thrown to the working surface at a high speed and a certain Angle by mechanical method, so that the shot particle has a high speed impact on the working surface. Under the combined action of the vacuum cleaner vacuum negative pressure and rebound force, the shot material circulates itself in the equipment. At the same time, the shot material and the impurities cleaned down are recovered respectively through the air cleaning effect of the supporting vacuum cleaner. And a technique that allows the pellets to continue to be recycled. The machine is equipped with a dust collector to achieve dust-free and pollution-free construction, which not only improves efficiency but also protects the environment. When the machine is operated, the pellet size and shape of the pellet are selected, and the walking speed of the equipment is adjusted and controlled to control the projectile flow rate of the pellet, so as to obtain different projectile intensity and obtain different surface treatment effects.

Technical requirements of shot blasting process:
By controlling and selecting the particle size and shape of the pellet, adjusting and setting the walking speed of the machine, controlling the projectile flow rate of the pellet, different projectile intensity and different surface treatment effect can be obtained. The shot blasting process and the shot blasting equipment control the surface condition after treatment through three parameters according to the different surface to be treated. Select the size and shape of the pellet; The travel speed of the equipment; The flow rate of pellets. The above three parameters cooperate with each other to obtain different treatment effects and ensure the ideal roughness of the surface after shot blasting. For example: using S330 steel shot, flow 10A, treatment of C50 concrete surface, can reach a roughness of 90; By treating the asphalt surface, the flooding layer can be removed and the roughness is 80. When handling steel plates, the cleanliness standard of SA3 can be reached.

Shot blasting is the method of cleaning, strengthening (shot blasting) or polishing the workpiece with a shot blasting machine, which is used in almost all industries that use metals, including aerospace, automotive, construction, casting, shipbuilding, railways and many other industries. There are two techniques: shot blasting or sand blasting.

The first: shot blasting machine:

1. The shot blasting machine converts the motor energy directly into the power abrasive energy by rotating the turbine impeller.

2, the capacity of each impeller from about 60 kg per minute to kg/minute.

3, to use these large quantities of accelerators, use a wheel mill, in which large parts or large areas of parts must be in some form of rust, descaling, deburring, peeling or cleaning.

4, Often, the method of transportation of the parts to be thrown will define the type of machine: from simple desktops to integrated fully automatic manipulators for a full range of automotive manufacturers, via roller conveyors and belt descaling systems.

The second: sand blasting machine:

1, the sand blasting machine can be used in the form of blower or blower, the blast medium is pneumatically accelerated by compressed air and projected to the components by the nozzle.

2, for special applications, a media-water mixture can be used, which is called wet sandblasting.

3, in air and wet sandblasting, the nozzle can be installed in a fixed position, or can be operated manually or by automatic nozzle operator or PLC programmed automation system.

Post time: Jun-30-

In daily workshop production, the wire mesh belt shot blasting machine is one very important equipment for continuous and stable surface cleaning.

Wire mesh belt shot blasting machine uses a stainless steel wire mesh conveyor belt to carry workpieces into the blasting chamber, and with multiple high-speed blasting turbines, it can remove rust, oxide scale, and sand very effectively.

How Wire Mesh Belt Shot Blasting Machine Works and Why Choose It?

Wire mesh belt shot blasting machine is a continuous pass-through type surface cleaning and finishing equipment. It uses a stainless-steel wire mesh conveyor belt to transport workpieces through a sealed blasting chamber. Inside the chamber, several high-speed blast turbines throw steel shots onto the surface to remove rust, oxide scale, paint, sand, and burrs, and also to strengthen the metal surface.

1. What Is a Wire Mesh Belt Shot Blasting Machine?

Wire mesh belt shot blasting machine is a pass-through type surface cleaning equipment. Workpieces are placed on the wire mesh belt, and the belt continuously sends them into the blasting area. Inside the chamber, the turbines throw steel shots with high speed to impact the surface. After blasting, the parts come out from the other side, already cleaned.

Because there is no tumbling and no collision, this machine is very suitable for flat, thin, or precision-type workpieces.

2. Main Structure of the Machine (Engineer Practical View)

A complete wire mesh belt shot blasting machine generally includes:

• Wire Mesh Conveyor Belt Usually stainless steel or manganese steel mesh, strong wear resistance, stable conveying.
• Blasting Chamber Made with high-manganese wear plates, long service life under heavy shot impact.
• Shot Blasting Turbines Core component. Provides strong blasting force and large coverage area.
• Abrasive Circulation System Screw conveyor + bucket elevator + air separator to recycle abrasive automatically.
• Dust Collector System Cartridge or bag-type dust collector to ensure clean environment and remove fine dust.
• Electric Control System PLC control, belt speed adjustable, turbine protection, and fault monitoring.

This structure ensures the machine can run long time, stable, and efficient.

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3. Working Principle (Simple and Clear Explanation)

1. Place workpieces on the wire mesh belt.
2. Belt moves and sends parts into the blasting chamber.
3. Turbines throw steel shots onto workpiece surfaces at high speed.
4. Rust, scale, paint, sand—all removed instantly.
5. Used shots fall down and go through separation system.
6. Clean shots return to storage hopper and are reused.
7. Cleaned workpieces exit the machine and go to next process.

The whole process is continuous, so it is very suitable for large-volume production.

4. What Workpieces Are Suitable?

This type of blasting machine is mainly used for:

• Aluminum die-casting parts
• Iron or steel castings
• Heat-treated parts
• Automobile components
• Hardware tools
• Sheet metal parts
• Stainless steel products
• Fasteners and small-medium precision parts

Since workpieces are not tumbling, this equipment is ideal for thin, flat, or easily damaged parts.

5. Advantages of Wire Mesh Belt Shot Blasting Machine

1) Continuous Production, High Efficiency

One operator can handle whole line; production capacity is stable and high.

2) Uniform Blasting Quality

Wire mesh belt speed + multi-angle turbines ensure consistent cleaning.

3) No Damage to Workpieces

Suitable for delicate parts because no tumbling impact occurs.

4) Low Operating Cost

Abrasive is recycled automatically; turbine design is energy-efficient.

5) Easy to Connect with Automation Line

Can integrate with oven, cooling line, coating line, and robot loading.

6) Good for Mass Production

Continuous flow means very suitable for automotive and casting industries.

6. Daily Maintenance Tips (Workshop Engineer Experience)

To ensure long-term stable operation, maintenance is very important:

• Check conveyor wire mesh belt tension and wear.
• Inspect turbine blades and control cages regularly.
• Clean dust collector filter elements.
• Check abrasive amount in storage hopper.
• Ensure air separator is removing dust and broken shots properly.
• Lubricate bearings and rotating parts on time.
• Monitor chamber wear plates and replace when necessary.

Good maintenance reduces downtime and saves a lot of spare parts cost.

7. How to Choose the Right Model

When selecting a wire mesh belt blasting machine, consider:

• Size and shape of your workpieces
• Required blasting level
• Belt width (commonly 500– mm)
• Number and power of turbines
• Productivity requirement (m²/h or kg/h)
• Whether you need preheating, drying, or automatic loading system
• Whether connecting to an existing production line

Choosing correct model ensures stable production, lower cost, and long equipment life.

8. Typical Industrial Applications

Wire mesh belt blasting machines are widely used in:

• Removing scale after heat treatment
• Cleaning die-cast aluminum surface
• Sand, rust, and burr removal
• Pretreatment before painting or coating
• Strengthening surface to improve fatigue resistance

It is one of the most versatile and widely used blasting machines in automotive, casting, and hardware industries.

9. Wire Mesh Belt Shot Blasting Machine Technical Specifications

Conclusion

The wire mesh belt shot blasting machine is a reliable, continuous, and high-efficiency solution for modern surface preparation. With stable blasting quality, reusable abrasive system, and strong adaptability to many kinds of workpieces, this machine is now a standard choice for many factories wanting automation, consistency, and lower labor cost.

For more steel mesh belt shot blasting machineinformation, please contact us. We will provide professional answers.