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Problem Solving Forum (9)


Is the MEK rub test a conclusive test to check the cure of IOZ coatings?


What causes bubbling or cratering of epoxy intermediate coat when applied over epoxy zinc-rich primer?


On guardrails on a marine wharf, grating panels consisting of mild steel bars about 1/8-inch by 1-inch on a 2-inch-square grid were painted with a three-coat zinc/epoxy/urethane system. Inspectors are finding numerous pinholes in the finish coat along the inside corners of the grating where the 1-inch-thick bars meet at a 90-degree angle. These pinholes were not noticed in the zinc or epoxy coats, but the final coat's visual inspection is more detailed. What is the likely cause of the pinholing, and what could be done to prevent it on future applications? Also, what should the disposition of the parts with pinholes be, as in, repair, accept as is, reblast and recoat, or an alternative?


What is the recommended coating system and procedure for repairing deteriorated inorganic zinc/epoxy/polyurethane 3-coat systems? Does the repair system or procedure vary with the degree of deterioration and if so, how?


What can be done to prevent rust bleed in crevices when applying a zinc/epoxy/urethane system?


What are the significant performance differences between an inorganic zinc primer (ethyl silicate) and an organic zinc primer (epoxy), given the same application and exposure conditions?


Zinc metalizing has been applied to concrete surfaces to provide cathodic protection to rebar in the concrete. What are the problems, if any, with applying zinc metalizing to concrete, and what is the best approach to addressing them?


What is the effect of using a lower-metallic-content zinc-rich epoxy on the life of a paint system?


What can be done to prevent rust bleed in crevices when applying a zinc/epoxy/urethane system?


 
 
   

Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors

Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com


Titan Tool, Inc.
Power, Precision, Reliability. Titan PowrCoat Series.

PREMIUM COMES STANDARD. Power, precision and reliability are built into each unit including Severe Service which means twice the life with no maintenance. For maximum uptime, durability and ease of use, nothing performs like the PowrCoat™ from Titan.


Specialty Products, Inc. (SPI)
Polyurea & Polyurethane Spray Foam Training

SPI is committed to industry leading technical training for polyurea & polyurethane spray foam professionals. Attendees receive hands-on, in-depth training for using and troubleshooting plural-component equipment, spray guns, machine hoses & parts.


Park Derochie Coatings Ltd.
www.ParkDerochie.com

Coatings          Fireproofing
Sandblasting     Scaffolding
Metalizing           Insulation

• Shop & Field Services
• SSPC Certified
• NACE Inspectors on staff
• New Construction &
  Maintenance Programs


Fischer Technology Inc.
Measure TSA Coatings on Stainless Steel

The PHASCOPE® PMP10 from FISCHER precisely measures thermally sprayed aluminum (TSA) on stainless steel.


ABKaelin, LLC
ABkaelin, LLC

SSPC C3 & C5 TRAINING
QUALITY PROGRAM/CERTIFICATION SUPPORT – ISO,NQA-1, AISC SSPC QP and QS.
MONITORING-Environmental and worker monitoring CONSULTING & INSPECTION – Coatings, EHS, and compliance.
www.abkaelin.com


Bullard

The Next Generation
of Blasting

• Lightest
• Coolest
• Most Comfortable
• Most Dependable


Clemco International GmbH
Global engineering-trusted solutions

For more than 70 years, Clemco has provided the highest quality blast equipment with a total commitment to comfort and safety.


Desco Mfg. Co., Inc.

Dust - Free Surface Prep
Made EASY!

Efficient-Fast clean/remove
Advanced Containment
Safe - Well Below OSHA
Yes! - Innovative Solutions!
DESCO Mfg.Co., Inc.
www.descomfg.com
800-337-2648


HoldTight Solutions Inc.
NO FLASH RUST - NO CONTAMINANTS

Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802 sales@holdtight.com

 
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