ALKA · AUSTRALIAN COATINGS MANUFACTURER
Heavy Machinery
Protect fabricated equipment with a coordinated finish.
SERVICE & APPLICATIONS
Protection matched to the asset.
ALKA coating systems support new machinery finishing and equipment refurbishment. Choose primer, barrier and finish layers around external exposure, surface condition and the appearance required for frames, guards and fabricated components.
New fabrication
Prepared steel can use a three-coat industrial build or an efficient primer-and-finish route according to exposure.
Equipment refurbishment
Identify the existing paint, remove contamination and unsound material, then define the repair and overcoating procedure.
Finish quality
Agree colour, gloss and an acceptable sample. Include handling damage and site touch-up in the finishing plan.
ALKYD PRIMERS · ENAMELS · SINGLE-PACK FINISHING
Single-pack finishes for machinery and fabricated assemblies
ALKA single-pack primers and enamels provide finish options for machine frames, covers, guards, transport assemblies and workshop repairs. High-gloss enamel, satin chassis black and hammer-tone effects serve different appearance needs; choose the complete primer/finish combination for the substrate and duty.
Products to assess for the job
- ALKA 401 · Alkyd zinc phosphate primer
Prepared carbon steel; a corrosion-inhibiting primer for compatible alkyd and enamel finishing routes.
- ALKA 402 · Single-pack acrylic etch primer
A substrate-specific adhesion option for steel and suitable galvanised or aluminium components. This is a thermoplastic acrylic primer, not an alkyd.
- ALKA 410 · Rapid-cure protective enamel
A gloss finishing option for machinery, fabricated components and maintenance work over a compatible prepared and primed surface.
- ALKA 411 · Satin black / chassis enamel
A black finishing option for chassis, frames, transport assemblies and suitable equipment refurbishment.
- ALKA 415 · Hammer-tone finish
A decorative textured finish for machine covers, cabinets, enclosures and fabricated metal items where appearance is part of the brief.
Select a complete, compatible primer and finish. The products above are options by role, not a blanket approval to combine every primer and topcoat.
What the applicator or specifier needs
Separate visible panels, chassis components and process-contact surfaces. Record expected fuels, oils, cleaning agents, heat and outdoor exposure rather than relying on the term heavy duty.
Remove oil and grease before mechanical preparation. Check old paint for sound adhesion and compatibility, then detail welds, edges and bare-metal repairs.
Specify colour and finish samples, handling time and assembly touch-up. Allow the product-specific cure before transport restraints or operating service load the film.
Write a usable coating schedule
Specify the substrate and preparation, exact primer and finish, individual-coat dry-film thickness, application method, thinning limits, recoat interval and service-cure requirement from current product data. For repainting, document the retained coating and a representative compatibility trial before full application.
Choose the coating for the exposure
Severe chemical contact, continuous wetting, abrasion and high-temperature components need a more specific system than a general equipment enamel.
A single-pack route can simplify small batches and routine repainting because it does not require mixing a separate hardener. It still depends on sound preparation, suitable film build and the correct recoat window. Where exposure or the required maintenance interval is more demanding, assess the relevant two-pack epoxy, polyurethane or specialist lining system.
Does fast drying mean the part is ready for service?
No. Touch-dry, recoatable, handleable and fully cured describe different stages. Use the selected product data and actual application conditions to plan each stage. Excessive film build, early overcoating or premature handling can compromise the finish; adding extra thinner or a hardener is not a substitute for the specified application procedure.
SELECT THE COMPLETE BUILD
ALKA systems for this application.
| System | Why select it | Coating build | Total DFT |
|---|---|---|---|
| ALKA-9931 General Industrial | Balanced protection, appearance and cost without requiring a zinc-rich primer Prepared steel; moderate internal or external industrial atmospheric exposure | Alka 416 single-pack epoxy coating → Alka 413 high-build epoxy → Alka 421 polyurethane finish | 225–275 µm |
| ALKA-9934 Industrial Finish | Efficient two-coat system with attractive finish, cleanability and UV resistance Prepared steel in moderate atmospheric exposure where appearance and cleanability are important | Alka 416 or project-approved Alka epoxy primer → Alka 421 polyurethane finish | 150–200 µm |
| ALKA-9932 Maintenance / Refurbishment | Reduces preparation demands and supports practical maintenance programs Existing steel where full abrasive blasting is restricted; hand- or power-tool prepared areas | Alka 412 surface-tolerant epoxy × 2 coats → optional Alka 421 polyurethane finish | 200–400 µm plus optional 50–75 µm finish |
DFT = dry-film thickness. These are nominal system totals; individual-coat thicknesses and application conditions belong in the final coating schedule.
SPECIFICATION & APPLICATION
From surface preparation to return to service.
Build the coating schedule around the substrate and the work that can be achieved on site. For refurbishment, assess the adhesion and compatibility of retained coatings before defining repair boundaries.
- 01Fabrication and substrate
- 02Exposure severity
- 03Existing coating compatibility
- 04Colour, gloss and touch-up needs
Record surface preparation, environmental conditions, coverage at details and coat thickness. Allow for the specified recoat and cure periods, then inspect and repair defects before release to service.
A coordinated coating build
Schematic, not to scale. Follow the selected system for products, layer count and thickness.
TECHNICAL QUESTIONS
Details that affect system selection.
When is a two-coat system appropriate?
A primer-and-polyurethane finish is an efficient route for suitable steel in moderate atmospheric service. More severe exposure or a need for added barrier protection may call for a different build; select by duty rather than coat count alone.
What belongs in the final technical submission?
Include current TDS and SDS, substrate preparation, the product and thickness schedule, application conditions, inspection criteria and cure requirements. For chemical or immersed service, include written suitability for the actual exposure. Any required certification or durability commitment must be supported by the relevant evidence.
The listed builds cover suitable external surfaces. Bearing fits, moving interfaces, exhausts, high-temperature parts and direct wear faces require equipment-specific treatment.
PRODUCTS & TECHNICAL DOCUMENTS
Go directly to the product information.
Read the published technical data sheets below, or open a product overview. Request the current SDS set and confirm the document revisions for your specification before procurement.
MANUFACTURER TECHNICAL SUPPORT
Turn the service conditions into a coating specification.
Send the asset, substrate, exposure and maintenance window. ALKA can help define the coating build, preparation and technical documentation for your review.