TYPE · 01
Polishing
拋光
Light grinding to remove surface oxidation, burrs, and minor defects, keeping the original shape and sharp edges with a bright, smooth finish. Ideal where sharp edges must be kept but appearance matters.
BARREL FINISHING · Edge Treatment
Pin Edge Finishing Process
YIN GUAN uses barrel finishing technology to deburr, polish, and round the edges of wire-formed pins, making them easier to insert into PCB holes, rubber comb bases, and mating connectors — while improving appearance and safety.
What is Barrel Finishing?
Barrel finishing is a mass-processing technique for part edges and surfaces. Parts are placed in a barrel together with abrasive media; the rotation creates friction that deburrs, polishes, and rounds the edges.
YIN GUAN offers 4 finishing types based on product needs — from light polishing to full edge rounding, all customizable.
High-efficiency batch processing
Uniform edge deburring
Better insertion feel
Improved appearance
TYPES
4 Finishing Types
Based on pin usage, insertion difficulty, and appearance needs, we offer polishing, chamfering, half round, and full round options.
TYPE · 02
Chamfering (Small Radius)
倒圓角
Removes the sharp corners of the pin's end face and sides into a small radius, eliminating sharp edges while retaining the main shape. Ideal for reducing burr risk without full rounding.
TYPE · 03
Half Round
半圓角
Edges shaped into a partial arc, between chamfering and full round. The pin keeps some flat surface but fully rounded edges, balancing insertion feel and mechanical strength.
TYPE · 04
Full Round (Bull Nose)
全圓角
The pin end is shaped into a complete hemispherical arc with no sharp edges and an extremely soft feel. Ideal for skin-contact applications or where safety is paramount.
Not sure which finishing to choose?
Contact us.
Based on your application and insertion needs, we can recommend the best finishing process.