Advanced zinc flake corrosion protection on two technology platforms: water based GEOPERT® 500 by Zincotec® Korea and solvent based Zintek® systems by MKS' Atotech.
Two technologies, one technical partner
Riya Zinc Flake Coatings provides zinc aluminium flake corrosion protection for automotive, fastener and engineering applications. Two proven technology platforms run under one roof: water based GEOPERT® 500 from Zincotec® Co., Ltd. of South Korea on the dip spin line, and solvent based Zintek® technology from MKS' Atotech on the automatic line. That dual capability lets us select the coating system for each job by component geometry, corrosion requirement, coating thickness, friction requirement, appearance and OEM specification, rather than fitting every part to one chemistry.
- Water based silver: GEOPERT® 500, 505 and 720, six to eight micron layers, 1,500 hours plus salt spray on GEOPERT® 500, heat resistance to 450 C.
- Water based black: BLACKPERT in glossy, semi gloss and matte, five to ten microns, dip spin or spray.
- Solvent based on the automatic line: Zintek® 200 and Zintek® ONE HP in silver, Zintek® 300 HP in deep black, Zintek® Top XT and Techdip® Black SL as top coats.
- Non electrolytic route, so no hydrogen is generated in the coating process: the reason zinc flake is specified on 10.9 and 12.9 fasteners.
- Capacity of 150 tonnes a month, open for third party job work.
The coating system is selected for each part, not applied by habit. The decision runs on:
Water based or solvent based, chosen for the part
GEOPERT® 500
Zincotec® Co., Ltd., South Korea
High corrosion resistance. Low VOC. Water soluble technology.
GEOPERT® is a water soluble zinc and aluminium composite coating developed for high performance corrosion protection. Zincotec®'s published product information describes it as a low VOC, non hazardous zinc flake technology with excellent corrosion resistance, suited to screws, bolts, washers and similar components.
salt spray without red rust at 6 to 8 microns, as published by Zincotec®, subject to process and test conditions
- Water soluble zinc and aluminium composite coating
- Bright silver appearance
- Low viscosity, for uniform films on complex shapes
- Low VOC characteristics
- Chromium free formulation
- No electroplating process, no hydrogen embrittlement route
- Thin film corrosion protection
- Excellent coverage on fasteners and complex components
- Dip spin application
Zintek® systems
MKS' Atotech
Technology built to exceed industry standards.
Atotech's zinc flake portfolio pairs silver and black base coats with organic and inorganic top coats, used on fasteners, brake and chassis components, stamping parts and other demanding applications. The portfolio is modular: base coat and top coat are combined to the corrosion, appearance, friction and application requirement of the part.
neutral salt spray on Zintek® 200 at around 8 microns in two layers, as published by Atotech, subject to application and test conditions
- Silver base coats with excellent coverage and strong adhesion
- Deep black base coat for visible fasteners
- One coat option: Zintek® ONE HP
- Thin inorganic top coat: Zintek® Top XT
- High impact and wear resistance
- No hydrogen embrittlement during application
- Free of Cr(VI), cadmium, cobalt, lead and nickel
- Dip spin and rack spin
- Automotive fasteners, chassis, brake components, springs, clips
Controlled dip spin application
Two coats and two bakes on the dip spin line, every parameter recorded against the batch.
- 01Surface preparation
- 02Cleaning and degreasing
- 03Shot blasting and surface activation
- 04GEOPERT® 500 base coat
- 05Curing
- 06Second coat
- 07Final curing
- 08Top coat or functional layer, where required
- 09Inspection
- 10Packing and dispatch
Published GEOPERT® documentation describes two coating cycles and two baking cycles, cured at around 320 to 330 C for 20 minutes, subject to the approved process specification.
The same part, either side of the line
Drag the handle. Bare steel on the left, the zinc flake coat on the right, and everything in between is one pass through dip spin and cure.
GEOPERT® and BLACKPERT
Zincotec® systems applied on the dip spin line. GEOPERT® is the silver range, BLACKPERT the black.
| Product | Appearance and curing | Property |
|---|---|---|
| GEOPERT® 500 | Bright silver, 320 C for 20 min | 1,500 hrs+ salt spray at 6 to 8 microns, heat resistance 450 C. Automotive, marine, wind power. |
| GEOPERT® 720 | Silver, 320 C for 20 min | 1,000 hrs+ salt spray, heat resistance 400 C. Automotive parts, streetlight. |
| GEOPERT® 505 | Bright silver, 310 C for 20 min | 1,000 hrs+ salt spray. Electric and electronic parts, decorative. |
| BLACKPERT G | Glossy black, 220 C for 20 min | Clear glossy black. Electrical and electronic parts. |
Zintek® on the automatic line
MKS' Atotech base coats and top coats, run when the part geometry, the substrate or your own specification calls for it. Figures are the manufacturer’s published data; the result guaranteed for your part is agreed against your drawing.
| Product | Type | Published performance |
|---|---|---|
| Zintek® 200 | Premium silver base coat, solvent based, inorganic | 1,000 hours plus neutral salt spray at around 8 microns total in two layers. Excellent cathodic protection, very good adhesion, high impact and wear resistance. Free of Cr(VI), cadmium, cobalt, lead and nickel; non PFAS version available. |
| Zintek® ONE HP | One coat silver base coat, solvent based, inorganic | Up to 720 hours neutral salt spray from a single 6 to 8 micron layer. Reduced processing time and operating cost. Dip spin and rack spin. |
| Zintek® 300 HP | Deep black base coat, solvent based, dip spin | Uniform deep black appearance with corrosion protection; 480 hours plus neutral salt spray in a three layer build, 720 hours plus with a top coat. With the matching black top coat it improves colour uniformity and reduces silver shine through. |
| Zintek® Top XT | Clear top coat, water based, inorganic | Around 1 micron application thickness. Corrosion protection, white rust resistance, colour stability and controlled friction on fasteners, springs, clamps, stamping and chassis parts. |
| Techdip® Black SL (HC) | Organic top coat with integrated lubricant | Controlled coefficient of friction of approximately 0.13 to ISO, with barrier corrosion protection and good adhesion, chemical and UV resistance. |
More than corrosion protection
A modern zinc flake system is not only the base coat. The combination of base coat and top coat is engineered to the joint, and the top coat is what sets how the fastener behaves on the assembly line.
Protection without electroplating hydrogen
Zinc flake coatings are applied through a non electrolytic process rather than conventional electroplating, and Atotech specifically describes its zinc flake technology as eliminating the hydrogen embrittlement problem associated with the coating process. That is why the route suits 10.9, 12.9, high strength and critical fasteners. Final suitability is always evaluated against the customer's specification, substrate, heat treatment and the complete coating process.
Every batch. Controlled, tested, documented.
Our quality approach is built on process control and verification, not on inspection at the end.
Incoming material control
Surface preparation control
Coating chemistry control
Viscosity and process parameter control
Coating thickness verification
Appearance inspection
Salt spray and corrosion testing
Torque and functional testing
Final inspection and batch release
Engineered for critical components
Fasteners and components that cannot be allowed to rust, across four sectors, each with its own corrosion, appearance and torque demands.
Automotive
- Fasteners
- Chassis components
- Brackets
- Suspension parts
- Brake components
- Stamping components
Commercial vehicles
- Heavy duty fasteners
- Chassis parts
- Structural components
Agricultural equipment
- Tractors
- Implements
- Structural fasteners
Industrial and engineering
- General engineering
- Heavy machinery
- Construction equipment
- Wind energy
- Industrial fasteners
The right chemistry, the right process, the right performance
We do not simply apply a coating. We select and control the complete coating system to your functional requirement.
Customer requirement
Material and component analysis
Coating system selection
Process validation
Production
Testing
Approved component
Plot No. 215, HSIIDC, Hissar Road, Rohtak 124001 (Haryana), India
All product names, trademarks, technology names and product specific performance claims remain the property of their respective manufacturers. GEOPERT® and related Zincotec® technologies are trademarks and products of Zincotec Co., Ltd., South Korea. Zintek®, Techseal® and Techdip® are trademarks and products of MKS' Atotech. Specific corrosion resistance values, coating thickness, friction coefficient and process conditions depend on the selected product, component geometry, substrate, coating system, application parameters and the applicable test standard. Customer and OEM specifications and current manufacturer technical data sheets should be used for final qualification.
Official product references: Zincotec, GEOPERT® · MKS' Atotech, zinc flake coatings · Zintek® 200 · Zintek® ONE HP · Zintek® 300 HP · Zintek® Top XT
Send us a component to coat
We take third party job work across Haryana. Tell us the part, the substrate and the salt spray figure you have to hit, and we will tell you which system suits it.