Wei Hung Powder Coating facilitate with latest powder coating systems and tools imported from Wagner, Germany.
Utilising the facility equipments and tools will provide us a greater flexibility option and increment of our productivity values effeciency without any downtime.
Faccilitate enabler delivery for the finishing materials through our powder coating process based on the specifications or requirements from our customer and capability to process more load or materials in a shorter time consumption. Improved the efficiency and performance in powder coating quality and increase our capabilities in providing powder coating services
¤ -- Functional Capabilities --¤
¤ Equipped with multiple conveyor production lines to process materials by supporting up to lengths as long as 240 inches (609.6 cm).
¤ Our Powder application booths featuring state-of-the-art equipments including the in-line powder booth for automatic or manual application.
¤ Our climate-controlled powder room facility ensure the consistency environment for powder application
¤ Our warehouse facilities and allocated spaces enable us to handle high volume of powder coating and materials for project and managing by our expertise teams to ensure the smooth transition in our workflow.
CONVEYOR PLATFORM
Conveyor is mainly used in factory for handling of materials through a cycle of process into a different segmentation at more efficiently.
Our facility is operating with 3 units of conveyor platform designated based on our workflow process to provide us the flexibility and efficiency process in our powder coating workflow.
Our full conveyor powder coating production line system with multi-cyclone ICM spray booth equipped with fully automatic spraying guns from Wagner, Germany.
BATCH OVEN
Our batch oven exposes the product to heated circulating air to promote rapid evaporation of moisture. The time and temperature cycle depends on product material, thickness, and ability to drain.
Our Batch Oven is capable to support materials up to length of 240 inches materials (609.6 cm).
Contact us for more specific details.
POWDER COATING SPRAY BOOTHS
Our automatic powder booth comes with manual reinforcing facility.
A second booth, previously cleansed, could be positioned on-line in a few minutes requiring minimal time to complete the colour change with the cleaning of the spray guns and recovery cyclone. The booth is castor mounted to allow off-line cleaning.
MULTI-CYCLONE ICM SPRAYING BOOTHS
AUTOMATIC SPRAYING GUNS
PRE-TREATMENT FACILITIES
Pre-treatment is an initial process and used for surface preparation before the adhesion of the coating and as well after coating process if require.
Our facilities consist of 2 types of pre-treatment facility.
¤ 5 Stage tanks pretreatment
¤ Our 5-stage pre-treatment tanks is pre-built with our conveyor platform and is automated operating on tanks and pumps, to ensure the materials is ready for the next process
¤ 9 Stage tanks pretreatment
¤ Our 9-Stage Pre-treatment tanks is a separated facility which can be manually handle and operate
¤ Each tank is aligning with require process materials for the pre-treatment phases before loading to next tank
Pre-treatment Usage:
1. Degrease Or Cleaning :
Pretreatment starting from cleanses of surfaces is to ensure a cleaned materials only sent into processing for coating and materials does not contains any other mixtures of substances that may affect the quality of materials
2. Protection And Performance :
Zinc Phosphate as a chemical conversion coating which will provide a protective barrier that will prevent corrosion and oxidization of the metal. It is a protective barrier that will prevent corrosion and oxidation of metal. Dry-in-place sealers allow for a stronger performance with corrosion resistance
3. Chemical Resistance :
Ensure that the surface of materials to be coated are not contaminated with other substances that may affect corrosion protection, visible color or appearance of the coating.
Pretreating creates a surface that the coating can adhere to whether the coating is liquid or powder. Plus, pretreatments heighten the performance value of a coating, increasing its life
and helping to prevent corrosion.
All good pretreatment processes begin with a basic cleaning process. Cleaning is what every stage after this relies on, including successful powder application.
The following pretreatment stages simply won’t work properly if this isn’t done properly
5 - STAGE PRE TREAMENT
> TANK 1 : CLEANING STAGE
AKALINE DEGREASING AND PHOSPHATING AGENT FOR CLEANING, SMOOTHENING AND CREATION UNIFORM ALUMINIUM SURFACES - FEP306 (CHEMICAL)
> TANK 2: DEGREASING STAGE
AKALINE DEGREASING AND PHOSPHATING AGENT LIKE WITH ADDED TO INHIBITORS FEP106 (CHEMICAL) FOR PROTECTION TO THE CLEANSED MATERIAL SURFACE
> TANK 3: WATER RINSIING STAGE
OVERFLOW CLEAN WATER RINSING
> TANK 4: WATER RINSIING STAGE
OVERFLOW CLEAN WATER RINSING DE-IONISED
> TANK 5: CONDITIONING AND PROTECTION STAGE
ACID ETCHING AND SURFACE CONDITIONING
(FOR DE-OXIDISING AND CONDITIONING OF CF007 ADDED IN)
PRE-TREATMENT TANK OVERVIEW
9 - STAGE PRE TREAMENT
> TANK 1 : CLEANING STAGE
AKALINE DEGREASING AND PHOSPHATING AGENT FOR CLEANING, SMOOTHENING AND CREATION UNIFORM ALUMINIUM SURFACES - FEP306 (CHEMICAL)
> TANK 2: RINSING STAGE
OVERFLOW CLEAN WATER RINSING
> TANK 3: RINSIING STAGE
OVERFLOW CLEAN WATER RINSING
> TANK 4: CONDITIONING STAGE
ACID ETCHING AND SURFACE CONDITIONING (FOR DEOXIDISING AND CONDITIONING OF ALUMINIUM SURFACE)
> TANK 5: RINSING STAGE
OVERFLOW CLEAN WATER RINSING
> TANK 6: RINSING STAGE
OVERFLOW CLEAN WATER RINSING
> TANK 7: CHROMATE PLATING STAGE
CONVERSION COATING APPLICATION (CHROMATE TREATMENT - FOR POWDER COATING ADHESION, BONDING AND LONG TERM CORROSION RESISTANCE)
> TANK 8: RINSING STAGE
OVERFLOW CLEAN WATER RINSING
> TANK 9: FINAL RINSING STAGE (DEIONISED WATER)
OVERFLOW CLEAN WATER RINSING (WITH DE-IONISED WATER)
PRE-TREATMENT TANK OVERVIEW
5 - STAGE PRE TREAMENT
9 -STAGE PRE TREAMENT
CHEMICAL - PRETREATMENT
Our pretretment service including of chemical conversion coating, dry-in-place sealers and zinc phosphate
Pre-treatment Steps
From cleaning to conditioning to sealing, there are plenty of ways for you to pretreat a substrate in preparation for coating.
The products and stages usage is depends on what to achieve for the finishing and quality.
The entire pretreatment is to prep the substrate to properly accept a coating, keep it in top nick for as long as possible and prevent corrosion - and wash away all manner of dirt and bug guts
Degreasing / Cleaning
• Degreasing step oil, grease and other surface contaminations are removed from the profile surface to obtain a clean surface prior to etching. Inhibitors are often added to protect the metal surface from attack during this cleaning operation.
Rinsing
• There is usually a rinsing step (or more) after each process step to remove chemicals from the profile surface and prevent carry over and contamination of solution operation.
• Mains water is normally good enough after the first pre-treatment steps, but in the final rinsing step the water should be very clean to avoid adhesion and corrosion problems.
Deoxidisation / Chemical
• In the deoxidisation process any smut resulting from insoluble from the etching is removed
• Deoxidisation process any smut resulting from insoluble from the etching is removed.
Conditioning Inspection
• Preparing the surface to accept product for the best results possible requires some sort of conditioning agent. Essentially, the conditioner is applied.
Drying Off / Double Rinsing
• Powder coating the profiles need to be completely dry. Prevent any moisture on the surface from interfering the coating process
• Dry off oven basically quickly removes any moisture left on the part from the last rinse.
The longer moisture stays on the part, the more susceptible it is to a layer of ‘flash rust’ forming.
Surface Cleaning - Preparation
Surface preparation can affect on the quality of performance. The quality of surface preparation has a direct relation with the lifetime of a system. Surface preparation consists of removing mill scale, rust, corrosion products, removing of all soluble salts, oil, grease, drilling , cutting components and any foreign matter from the material surface.
Example materials for surface preparation
Aluminium
Surface is require to be clean and dry. Corrosion salts should be removed by light abrasion and water washing. The aluminium can be etched by using acidic solution or etch primer
Galvanised Steel
Degreasing of most galvanised surfaces need time and effort to obtain a clean surface. Any zinc corrosion products can be removed by high pressure water washing or with scrubbing.
May apply acid etch solution or etch primer to passivate the surface and shall provide a key for further paint coatings. If the steel been treated with passivating treatment after galvanising, then it must be allowed to weather off over a period of time in months under exposure or be abraded before application process of powder coating
Stainless Steel
Stainless steel does not require any surface pre-treatment prior to coating.
Ensure the surfaces is free from oil, grease, dirt and other materials during chemical cleaning.
• Surface profile is the depth of between 1.5 and 3 mils is recommended for process in coating systems.
CURING - A process uses heat to melt resins in the coating powder, so the powder creates a smooth film.
With thermoplastic curing, the powders melt and flow into a uniform layer but can be remolded.
Without curing, the powder coating can wipe off easily.
MELT
• Powder particles begin changing from a solid to semi-liquid state.
FLOW
• Powder is fully liquefied, reaching lowest viscosity, allowing film to smooth out - Smoothing process
GEL
• When sufficient crosslinking has occurred, for solidification of the film from a liquid to a solid
CURE
• Finally the most critical stage when baking results in reaction of majority at crosslinking sites and development of full design properties
• The powder coating curing process involves heating the powder coating in an oven, typically at temperatures between 300°F and 400°F (150°C to 200°C).
• The heat producing the powder to melt, flow, and form a smooth, durable finish.
• Usually take less than 25 minutes process per cycle. It is highly dependable on the materials type and requirement require to achieve.
• During the curing process, the powdered coating becomes hard and uniform, creating a smooth, durable surface resistancy enabled.
