Precision Parts
Manufacturer and Exporter

Product Specification

Product Description

Techno CNC Surface Finishes — Chemical & Functional Treatments (With Riko Chemistry Match)

1. Surface Preparation / Pretreatment

Before plating or protective coatings, surfaces must be cleaned and activated.

Service matches:

• Mechanical Cleaning & Blasting: Glass Bead Blasting — creates uniform surface texture for better coating adhesion. (technocnc.in)

• Brushing / Satin Finishes — removes burrs, dirt and surface imperfections before chemical processes. (technocnc.in)

Riko Chemical counterpart:

• Pretreatment & Degreasing Baths — removes oils, mill scale, oxides, and contaminants to enable strong adhesion of electroplated layers. (rikochemicals.com)

2. Functional Plating & Corrosion Protection

These coatings provide corrosion resistance, wear-protection, solderability and decorative finishes.

a) Zinc Coatings / Phosphating

• Techno: Zinc Yellow, Zinc Plating finishes (basic corrosion-protective layer). (technocnc.in)

• Riko: Zinc & Zinc Alloy electroplating chemistries — bright, ductile zinc deposits with excellent corrosion resistance. (rikochemicals.com)

When to use: Fasteners, brackets, chassis parts, structural hardware where rust protection is priority.

b) Nickel / Bright Coatings

• Techno: Nickel, Bright finish (shiny uniform metallic layer). (technocnc.in)

• Riko: Nickel electroplating solutions — provides hardness, wear resistance and corrosion protection. (rikochemicals.com)

When to use: Precision mechanical parts, electrical contacts, components needing wear resistance.

c) Copper Plating

• Techno: Copper finishes available. (technocnc.in)

• Riko: Copper electroplating chemistries — excellent for base layers and enhancing solderability. (rikochemicals.com)

When to use: Electronics, PCB-related contacts, intermediate layer before nickel/chrome plating.

3. Conversion & Protective Coatings

These thin chemical layers improve corrosion resistance and surface durability for plated parts.

a) Passivation / Chromate Conversion

• Techno: Iridite, Iridite, Yellow finishes (chromate conversion coatings). (technocnc.in)

• Riko: Trivalent passivations & chromate coatings — enhance corrosion performance of zinc plated parts. (rikochemicals.com)

When to use: All zinc coated parts requiring additional corrosion resistance (automotive, industrial).

b) Phosphating

• Riko: Phosphating chemistry for porous phosphate layers improving corrosion resistance or paint adhesion. (rikochemicals.com)

When to use: Steel parts prior to paint, powder coat, or top coatings; where lubricant retention is beneficial.

4. Specialty Coatings (Protective & Functional)

a) Tin Plating

• Riko: Mirror bright tin deposits with good solderability and corrosion protection — ideal for electrical components. (rikochemicals.com)

Techno CNC match:
(Could be added as a future optional service if not currently listed.)

5. Aesthetic / High-Performance Mechanical Finishes

These finishes are mechanical or CNC-based rather than chemical, but are essential for appearance, form-fit function, and downstream treatments.

• As Machined — Ra ~3.2μm baseline finish. (technocnc.in)

• Smooth Machining — refined Ra ~0.8–1.6μm for premium surface quality. (technocnc.in)

• Brushing / Satin Grain — aesthetic linear texture. (technocnc.in)

• Brushed & Electropolished — enhanced corrosion resistance and satin look. (technocnc.in)

• Glass Bead Blasting + Black Anodize — uniform texture + durable black coating. (technocnc.in)

• Vapor Smoothing — glossy plastic finish (for 3D printed parts). (technocnc.in)

???? Summary — Match Table (Easy Copy)

Additional Information