Υπολογιστής κάλυψης στρώσης WFT/DFT

Q: "What is the difference between WFT and DFT?"

"WFT is the film thickness right after application, while DFT is the film thickness left after drying. Volume solids are used to convert between them."

Q: "Are volume solids and weight solids the same?"

"No. Use volume solids for thickness conversion. If you only have weight solids, convert them separately first."

Q: "What loss rate should I enter?"

"Use a value that matches the application method, geometry, and your field experience. Higher overspray usually means a higher loss rate."

Q: "Can I use it without entering area?"

"Yes. Leave area blank if you only need the WFT and theoretical coverage calculation."

Q: "Can I mix metric and imperial units in one calculation?"

"No. Keep the entire calculation in one unit system at a time."

Υπολογίστε αντίστροφα το απαιτούμενο πάχος υγρής στρώσης (WFT) και την πραγματική κατανάλωση υλικού από το DFT-στόχο, τα στερεά κατ' όγκο, τη φύρα και την επιφάνεια.

Εναλλαγή μεταξύ microns και mils κατά την εργασία με στάδια βιομηχανικής βαφής, συμπεριλαμβανομένων των απαιτητικών εφαρμογών.

Δείτε DFT, WFT, θεωρητική κάλυψη και κατανάλωση σε ένα μέρος

Υποστηρίζει microns / mils και m²/L / ft²/gal

Υποστηρίζει stripe coat και τοπικές διορθώσεις

Οδηγίες χρήσης

Choose the unit system.
Enter target DFT, volume solids, and coats for each stage.
Add area, loss rate, and area share if needed.
Review WFT, theoretical coverage, and actual usage.
Copy the result or share the current state if needed.

Παράδειγμα

Two-stage heavy-duty coating (metric)

Εισαγωγή Area 100 m², loss rate 10%, Primer: DFT 75 µm, volume solids 80%, 1 coat, area share 100%, Topcoat: DFT 50 µm, volume solids 65%, 2 coats, area share 100%

Αποτέλεσμα Primer WFT 93.75 µm, theoretical coverage 10.67 m²/L, usage 10.42 L. Topcoat WFT 76.92 µm, theoretical coverage 13.00 m²/L, usage 17.09 L. Total 27.51 L.

Partial coating with stripe coat (imperial)

Εισαγωγή Area 10,000 ft², loss rate 10%, Stripe coat: DFT 3 mil, volume solids 80%, 1 coat, area share 25%

Αποτέλεσμα WFT 3.75 mil, theoretical coverage 427.78 ft²/gal, effective coverage 385.00 ft²/gal, actual usage 6.49 gal.

Τύποι

WFT = DFT ÷ solidsFraction
Theoretical coverage = 1000 ÷ WFT(µm)
Theoretical coverage = 1604.1666667 ÷ WFT(mil)
Actual usage = Area × AreaShare × Coats × DFT ÷ (1000 × solidsFraction × (1 - lossRate))
Stage total DFT = DFT × Coats

Γλωσσάριο

DFT

Dry film thickness left after curing. This is the main figure used in specifications and inspection criteria.

WFT

Wet film thickness immediately after application. Only the solids remain after drying.

Volume solids

The share of volume that remains as film. Use volume solids for thickness conversion.

Theoretical coverage

A no-loss coverage estimate derived from WFT.

Area share

The share of total area assigned to a stage, such as stripe coat or touch-up work.

Σημειώσεις

Αυτός ο υπολογιστής χρησιμοποιεί στερεά κατ' όγκο, όχι στερεά κατά βάρος.
Η φύρα (loss rate) είναι ένα απλοποιημένο μοντέλο που ποικίλλει ανάλογα με τον ψεκασμό, τα υπολείμματα στα εργαλεία/δοχεία και τις συνθήκες του εργοταξίου.
Η κατανομή επιφάνειας (area share) μπορεί να οριστεί ανά στάδιο. Ιδανικό για εργασίες stripe coat και διορθώσεων.
Η πραγματική κατανάλωση διαφέρει ανάλογα με τις οδηγίες του κατασκευαστή, τη μέθοδο εφαρμογής, τη θερμοκρασία, την υγρασία και την κατάσταση του υποστρώματος.

Συχνές ερωτήσεις

What is the difference between WFT and DFT?

WFT is the film thickness right after application, while DFT is the film thickness left after drying. Volume solids are used to convert between them.

Are volume solids and weight solids the same?

No. Use volume solids for thickness conversion. If you only have weight solids, convert them separately first.

What loss rate should I enter?

Use a value that matches the application method, geometry, and your field experience. Higher overspray usually means a higher loss rate.

Can I use it without entering area?

Yes. Leave area blank if you only need the WFT and theoretical coverage calculation.

Can I mix metric and imperial units in one calculation?

No. Keep the entire calculation in one unit system at a time.