Step 01
Trim and fettle
Gates and overflows are cut on heavy runner cutting machines (under 12 seconds per sprue).
Surface Finishing · Thirumudivakkam, Chennai
Shot Blasting
& Surface Finishing
After trimming, castings are finished to the surface your application needs — a uniform blasted texture, deburred edges or a linished parting line — before machining, coating or assembly.
- Processes
- Shot blasting · vibro · linishing
- Finish range
- Ra 1.6 – 3.2 µm (linished)
- Blast media
- [INSERT MEDIA TYPE]
- Powder coating
- [INSERT IF OFFERED]
Why castings are finished
Trimming removes runners and overflows but leaves a thin parting-line flash, die-spray residue and uneven surface lustre. Shot blasting projects media at the casting to clean and give a consistent matte texture; vibratory finishing tumbles parts with abrasive media to break sharp edges; linishing uses abrasive belts to blend parting lines on visible faces.
The right combination depends on how the part is used — a hidden bracket may only need blasting, while a visible cover or a part going for powder coating needs a smoother, cleaner surface.
Process
Finishing sequence
A typical route after trimming:
Step 02
Shot blast
Uniform cleaning and texture; removes die-spray residue.
Step 03
Vibratory deburring
Edges are broken and small flash removed in vibratory bowls.
Step 04
Linishing
Visible parting lines are blended with abrasive belts.
Step 05
Inspection
Visual check against agreed cosmetic standards.
Capabilities
Finishing capabilities
Replace placeholders with the current equipment details.
| Shot blasting machine | [INSERT TYPE / CAPACITY] |
|---|---|
| Vibratory finishing | Vibratory bowls for edge break and deburring |
| Linishing | Abrasive belt linishers · Ra 1.6 – 3.2 µm |
| Runner cutting | Band saw and circular abrasive saws |
| Coating / painting | [INSERT IN-HOUSE OR PARTNER CAPABILITY] |
Parts we finish
Finishing is applied to our own aluminium die castings.
- Housings and covers
- Blasting + linishing on visible faces
- Brackets
- Blasting and vibratory deburring
- Parts for coating
- Clean blasted surface for adhesion
When finishing matters
Finishing requirements we typically see:
- Visible covers on electrical and lighting products
- Parts going for powder coating or painting
- Safety edges on handled parts
- Sealing faces before machining
Industries
Industries we supply with shot blasting & finishing
- Agreed cosmetic standard / boundary samples
- Edge-break check
- Surface roughness check on linished faces
FAQ
Shot Blasting & Finishing — frequently asked questions
Do you offer powder coating?
[INSERT ANSWER — in-house, through a partner, or not offered].
Will shot blasting affect dimensions?
Blasting removes negligible material; machined features are normally machined after blasting.
Can you match a sample finish?
Yes — share a boundary sample and we will agree the finishing route.
Related capabilities
Request for Quotation
Get a quote for shot blasting & finishing
Share your 3D model or drawing, alloy and annual quantity. Our engineering team reviews every enquiry for manufacturability before quoting.