ALKA · AUSTRALIAN COATINGS MANUFACTURER
Mine Shafts & Fixed Equipment
Protection for headframes, supports and fixed mine assets.
SERVICE & APPLICATIONS
Protection matched to the asset.
Fixed mining infrastructure needs coating schedules built around access, moisture and maintenance. ALKA systems address exposed headframes, prepared equipment steel and refurbishment areas, with underground exposure defined separately from above-ground conditions.
Headframes
Above-ground steel needs a coordinated atmospheric system with the required appearance and detail coverage.
Fixed equipment steel
Supports and frames need selection around condensation, cleaning and local environmental conditions.
Maintenance programs
Survey corrosion and retained coatings before setting repair boundaries and preparation requirements.
ALKYD PRIMERS · ENAMELS · SINGLE-PACK FINISHING
Single-pack finishing for selected dry ancillary equipment
Workshop-finished covers, service cabinets and dry ancillary steel may be considered for a single-pack primer and enamel. Do not treat all shaft and headframe assets as a general atmospheric environment: persistent condensation, mine water and restricted maintenance access can drive a different system.
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 403 · Red oxide anti-corrosive primer
A primer option for prepared ferrous metal, fabricated steel and general maintenance; confirm the selected finish compatibility.
- ALKA 410 · Rapid-cure protective enamel
A gloss finishing option for machinery, fabricated components and maintenance work over a compatible prepared and primed surface.
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
Record whether the component is in a dry workshop, exposed above ground or a humid shaft environment. Include contamination and access for future maintenance.
Assess corrosion and retained coatings before deciding on local repairs. Detail preparation of welds, brackets and water-retaining interfaces.
Coordinate coating work and return to use with the site maintenance plan. Confirm ventilation, cure and inspection access for the actual work location.
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
Wet shaft steel, chemically affected areas and assets with demanding durability requirements need a separately selected protective coating system.
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-9930 Premium External | Premium corrosion protection combined with a UV-stable, colour-retentive finish Abrasive-blasted carbon steel; external industrial and coastal atmospheric exposure | Alka 404 zinc-rich epoxy primer → Alka 413 high-build epoxy → Alka 421 polyurethane finish | 250–300 µm |
| ALKA-9933 High-Barrier Atmospheric | MIO barrier technology improves resistance to moisture, oxygen and salt penetration Prepared steel in industrial, marine-atmospheric and salt-laden environments above the waterline | Alka 404 or Alka 416 primer → Alka 413 MIO high-build epoxy barrier coat | 225–275 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.
- 01Above-ground or underground location
- 02Moisture and contaminants
- 03Structural condition
- 04Access and site acceptance requirements
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.
ALKA-9930 · External steel example
Schematic, not to scale. Follow the selected system for products, layer count and thickness.
TECHNICAL QUESTIONS
Details that affect system selection.
Does an above-ground system automatically suit underground steel?
No. Underground ventilation, moisture, contaminants and site requirements can change the specification. Describe the exact location and operating conditions rather than treating the whole mine as one exposure.
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.
Underground suitability, fire behaviour and mine-site acceptance requirements need separate review. Coatings do not resolve structural deterioration or provide approval for mine safety equipment.
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.