Skip to content 
Step 3: Precision Polishing & Surface Refinement**
*Transforming Rough Edges into a Flawless Finish*
**Process Overview:**
“At this stage, the stamped spoon blanks undergo a meticulous polishing sequence to achieve smooth, food-safe surfaces and elegant aesthetics. Our automated + manual dual-quality control ensures every piece meets your design specifications.”
**Key Sub-Steps:**
1. **Deburring & Rough Polishing**
– Robotic abrasive belts remove sharp edges and stamping marks (Grit 180-240).
– High-speed rotating wheels contour the spoon bowl and handle transition.
2. **Mirror Polishing (8K Finish)**
– Buffing with diamond-coated wheels + hypoallergenic wax compounds.
– Reflectivity test: ≥90% light reflection (measured by gloss meter).
3. **Laser Engraving (Optional)**
– Fiber laser etcher adds logos/patterns at ≤0.2mm depth (No material integrity loss).
– Design flexibility: Supports vector graphics & micro-text.
4. **Electrolytic Passivation**
– Immersion in citric acid bath to enhance corrosion resistance.
– Compliance: FDA 21 CFR 175.300 & EU 1935/2004.
**Quality Assurance Checks:**
✔️ Tactile inspection for zero burrs (White glove test).
✔️ 10x magnifier scan for micro-scratches.
✔️ Salt spray test samples: 72hrs exposure (ASTM B117) – no rust observed.
**Why It Matters:**
– **Safety:** Ultra-smooth surfaces prevent bacterial adhesion.
– **Durability:** Passivation layer extends lifespan by 3x vs. non-treated spoons.
– **Brand Value:** Custom finishes (e.g., matte, brushed, or engraved) elevate tableware luxury.
—
A spoon’s soul lies in its finish – we turn steel into heirlooms.”*
