There are cases where corrosion occurs on the carbon steel under the insulation when water penetrates into the insulation material. Especially in cases where the environment has a high salt content such as coastal areas or where the operating temperature is relatively low at 60 - 80°C, corrosion is likely to occur.
KEICAL ACE WIN
1.Protection of carbon steel by coating‐Anticorrosive double coatingspecification
→Deterioration due to rainwater or heat
2.Insulation absorption inhibition-Application of water- repellent insulation
→Water repellency reduced at 250°C or more
3.Exterior material joint sealing-Application of silicon sealant
"Keical Ace WIN" is a new type of insulation. The special anticorrosion pigment (calcium phosphate and Nitrous acid type hydrocalumite) is fixed inside calcium silicate (JIS A 9510 type 1-15 equivalent) which features lightweight, high strength and low thermal conductivity.
The special anticorrosion pigment has the following properties:
Anticorrosive action of calcium phosphate
Anticorrosive action of Nitrous acid type hydrocalumite (anion-exchange reaction)
In the highly-concentrated saline environment or when water is intruded, greater anticorrosive performance can be expected from "Keical Ace WIN" with the two properties of a special anticorrosion pigment, compared with conventional insulation.
- Feeding of hot water every 1.5 hrs. to hot-water pipe (3B) Pipe surface temperature: 90-95°C
- Pipe corrosion state after disassembly
WIN has the effect of corrosion inhibition.
Insulation 3" x 30mm with no exterior material
3% NaCl spray, 200 ml x twice per