Shot blasting plays an important role in surface treatment industries. It is widely used for rust removal, casting cleaning, descaling and coating preparation.
However, many users face problems during production:
✅ Cleaning efficiency is too low
✅ Abrasive consumption is too high
✅ Surface roughness does not meet coating requirements
✅ Blasting results are inconsistent
✅ Excessive dust affects production
In many cases, the solution is not only adjusting the machine parameters. Choosing the correct abrasive media is one of the most important factors.
This article explains common shot blasting problems and how steel shot and steel grit selection can improve blasting performance.
Problem 1: Poor Cleaning Performance
What Happens?
The blasting machine is running, but rust, mill scale or old coating cannot be removed effectively.
Why Does It Happen?
|
Possible Cause |
Explanation |
|
Abrasive size too small |
Insufficient impact energy |
|
Incorrect hardness |
Abrasive wears too quickly |
|
Worn abrasive |
Lower cleaning efficiency |
|
Wrong abrasive selection |
Poor surface treatment result |
How to Solve It?
|
Application |
Recommended Abrasive |
|
General cleaning |
Steel Shot |
|
Casting cleaning |
S230 / S330 Steel Shot |
|
Heavy rust removal |
G10 / G12 Steel Grit |
|
Mill scale removal |
Coarse Steel Grit |
2. Problem: Excessive Abrasive Consumption
What Happens?
Some customers find that abrasive consumption is higher than expected, increasing operating costs.
Main Reasons
|
Problem |
Result |
|
Low-quality abrasive |
Higher breakage rate |
|
Incorrect hardness |
Faster wear |
|
Poor recycling system |
Loss of reusable abrasive |
|
Wrong abrasive selection |
Lower blasting efficiency |
How to Reduce Abrasive Consumption?
Using high-quality steel abrasives with stable:
✓ Chemical composition
✓ Particle size distribution
✓ Hardness
✓ Metallurgical structure
can improve abrasive durability and reduce replacement frequency.
Steel shot and steel grit are widely used in recycling blasting systems because metallic abrasives have good durability compared with many disposable abrasives.
3. Problem: Surface Roughness Does Not Meet Requirements
Surface roughness is especially important before:
· Painting
· Powder coating
· Anti-corrosion coating
The correct abrasive should be selected according to the required surface profile.
Steel Shot Applications
Steel shot is suitable when customers need:
|
Requirement |
Benefit |
|
Smooth surface finish |
More uniform appearance |
|
General cleaning |
Stable cleaning performance |
|
Shot peening |
Surface strengthening effect |
|
Controlled roughness |
Better surface consistency |
Recommended products:
· S230 Steel Shot
· S280 Steel Shot
· S330 Steel Shot
· S390 Steel Shot
Steel Grit Applications
Steel grit is suitable when customers need:
|
Requirement |
Benefit |
|
Rust removal |
Strong cutting action |
|
Mill scale removal |
Efficient cleaning |
|
Old coating removal |
Better stripping ability |
|
Coating preparation |
Creates suitable anchor profile |
Recommended products:
· G10 Steel Grit
· G12 Steel Grit
· G14 / G16 / G18 Steel Grit
· G40 / G50 Steel Grit
4. Problem: Uneven Blasting Results
Common Symptoms
Customers may experience:
· Different surface appearance on the same batch
· Uneven cleaning results
· Different coating performance
Possible Causes and Solutions
|
Cause |
Solution |
|
Mixed abrasive sizes |
Use accurately screened abrasive |
|
Unstable abrasive quality |
Select reliable abrasive supplier |
|
Incorrect abrasive type |
Match abrasive with application |
|
Incorrect hardness |
Choose suitable hardness level |
Stable abrasive quality is especially important for continuous production industries such as shipbuilding, steel structures and machinery manufacturing.
Solutions
To reduce dust generation:
✓ Use durable abrasive media
✓ Maintain proper abrasive recycling
✓ Remove excessive broken particles
✓ Select suitable hardness
For applications requiring lower breakage and reduced dust generation, Low Carbon Steel Shot can be considered.
How Zhongxing Metal Helps Customers Choose the Right Abrasive
Shandong Zhongxing Metal Products Co., Ltd. specializes in manufacturing:
· Steel Shot
· Steel Grit
Our products are widely used in:
· Shot blasting
· Casting cleaning
· Rust removal
· Descaling
· Surface preparation
· Coating preparation
Choosing the correct abrasive is not always simple. Different workpieces, blasting machines and surface requirements need different solutions.
