Electroplated Diamond Cutter Ring Metallography Preparation

As a key wearable part for automatic sock knitting machines, this cutter ring trims excess yarn and separates finished socks automatically. It is made of SK5 spring steel, undergoing stamping, rolling, tooth milling and heat treatment. The cutting edge is locally coated with nickel-based diamond composite layer via electroplating, including pre-nickel plating, diamond grain co-deposition and final polishing.

Metallographic analysis serves as the core quality inspection method. Cross-section microscopic examination helps check the metallographic structure of the substrate, thickness of coating layers, distribution and embedding depth of diamond particles. It effectively detects defects such as coating delamination and particle agglomeration, evaluates bonding strength and wear resistance, and ensures long-term stability and service life under high-speed cutting conditions.

Sample Preparation Procedures

1️⃣ P400 MET-SP with water

2️⃣ P800 MET-SP with water

3️⃣ P1200 MET-SP with water

4️⃣ P2000 MET-SP with water

5️⃣ SC-JP + 1μm PD-WT

6️⃣ ZN-ZP + 0.05μm SO-A439