Shot Blasting & Surface Finishing
A forging leaves the hammer covered in scale. Shot blasting strips it, exposes the true surface for inspection, and leaves a uniform finish that coatings and paint can actually adhere to — which is why finishing is a quality operation, not a cosmetic one.
- Blasting Media
- Steel shot / grit
- Coatings
- RP oil, phosphate, primer, paint
- Export Protection
- VCI and heavy oil systems
- Marking
- Stamped, laser or ink
- Finish
- Uniform matte, scale free
- Batch Traceability
- Heat and batch number marked
Shot Blasting & Surface Finishing at a glance
Quotable facts from Avadh Techno Forge, Gundasara, Gondal, Rajkot.
- Blasting Media: Steel shot / grit
- Coatings: RP oil, phosphate, primer, paint
- Export Protection: VCI and heavy oil systems
- Marking: Stamped, laser or ink
- Finish: Uniform matte, scale free
- Batch Traceability: Heat and batch number marked
Shot Blasting and Descaling
Steel shot removes oxide scale from every recess of a forged contour, including under-die radii that chemical cleaning reaches poorly. The uniformly matte surface it leaves makes surface cracks visible during inspection, which loose scale would otherwise hide.
- Full scale removal from complex contours
- Uniform matte finish
- Surface defects made visible for inspection
- Better coating adhesion
Protective Treatments
Depending on the destination and storage period we apply rust-preventive oil, zinc phosphate, primer or full paint systems. Export consignments crossing humid sea routes receive the heavier protection that a domestic delivery would not need.
Marking and Identification
Part number, heat number, batch code and customer logo are applied by stamping, laser or ink marking as specified — so a component identified on the shop floor two years later can still be traced to its original certificate.
Finishing Processes and What Each Achieves
Finishing is where a forging becomes inspectable and protectable. Shot blasting in particular is a quality operation rather than a cosmetic one: until the scale is off, dimensions cannot be measured accurately and surface defects stay hidden.
| Process | What it does | Typical use |
|---|---|---|
| Shot blasting | Removes scale, leaves a uniform matte surface | Every forging before inspection and machining |
| Rust-preventive oil | Short-term corrosion protection | Domestic delivery and internal storage |
| Phosphating | Conversion coating improving paint adhesion | Under paint systems and for mild protection |
| Primer and paint | Durable protection and appearance | Agricultural, construction and machinery parts |
| Hot dip galvanising | Heavy corrosion protection | Outdoor, structural and coastal service |
| VCI film and desiccant | Vapour-phase protection in transit | Sea freight and long storage |
Marking and Identification
Parts are marked so they remain identifiable years into service. Part number, heat number, batch code and customer logo can be applied by stamping, laser or ink marking, chosen for the surface and the legibility required. On safety-critical components the heat number is marked on the part itself, so a field concern can be traced back to the exact steel heat and production batch through our records rather than through guesswork.
- Stamped, laser or ink marking
- Heat number marked on safety-critical parts
- Working load limit and size on lifting hardware
- Marking position specified on the drawing
Matching Protection to the Journey and the Destination
Protection should be specified for the conditions the part will actually meet, not applied by habit. A component delivered across Gujarat needs far less than one crossing the Arabian Sea to Europe in a container, and one destined for a coastal installation needs more still. Sea freight to Europe or North America takes weeks in humid, salt-laden air, so VCI film, desiccant and rust-preventive oil are combined according to route and duration. See export packaging and logistics.
People also ask
Why must forgings be shot blasted?
To remove scale so dimensions measure accurately, surface defects become visible for inspection, and coatings adhere properly.
What corrosion protection do you use for sea freight?
VCI film with desiccant and rust-preventive oil, at a protection level chosen for the specific route and transit duration.
Topics covered on this page
- shot blasting forgings India
- surface finishing forged components
- phosphating coating Rajkot
- rust preventive coating forgings
Based on work carried out at our own forging plant at Gundasara, Gondal, Rajkot — operating since 2008.
Questions Answered
Why is shot blasting necessary?
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It removes forging scale so dimensions can be measured accurately, surface defects become visible, and coatings adhere properly.
What corrosion protection do you use for exports?
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VCI wrapping combined with rust-preventive oil, and phosphate or primer where the customer specifies it, chosen for the sea transit duration.
Can you paint to a customer colour code?
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Yes, to RAL or a customer-specified shade with agreed dry film thickness.
Do you laser mark part numbers?
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Yes, laser, stamping and ink marking are all available depending on surface and legibility requirements.