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Problem Solving Forum (5)


Structural engineers often prefer mechanically galvanized bolts for accurate tightening while corrosion experts often prefer hot-dip galvanized bolts for superior corrosion protection. How do you resolve this inherent conflict?


On a recent project, complex pre-fabricated, hot-dipped galvanized panels exhibited thicknesses in the range required for the entire subsequent coating system. It was not practical or possible to accurately map the thickness of the galvanizing across all the various parts, and DFT gauges available only measure the entire non-ferrous coating, including the galvanizing. How should thickness-per-coat minimums and maximums be controlled and verified for subsequent coatings?


I’ve heard that the use of the proper blast media is critical for the successful application of thermal spray aluminum and other metallics. What mechanism would lead to the differing performance characteristics of the TSA based on the blast media?


How do you prepare flame-cut edges for application of thermal spray metallic coatings? The problem is that these edges are often harder than the abrasive, so a very low profile is produced, resulting in lower-than-specified adhesion of the thermal spray to the steel.


What is the best low-maintenance approach to coating power-tool-cleaned field weld joints on process pipework that is protected with thermal-sprayed aluminum?


 
 
   

NACE International, The Corrosion Society
Get Hands-on Experience

In NACE’s CP Program, learn the techniques and procedures for testing, evaluating, and designing galvanic and impressed current CP systems.


SAFE Systems, Inc.
Enduroguard -
The Tough Cable
for a Tough Industry.

Reduce maintenance costs and down time, increase job site safety with Enduroguard Cable. Available exclusively from SAFE Systems. UL listed, flexible, abrasion resistant and cut resistant.


Sika-Us
Sika® Industrial Floor Coatings

Click to learn about floor and wall systems relied upon for performance, durability, easy maintenance and aesthetics across the every industry and environment.


Novatek Corporation
Novatek Corporation, Dustless Coatings Removal

Strip, clean and profile all dust free! Comply with new lead standards. Contact today: (866) 563-7800


Novetas Solutions
Safer Abrasive! 100% Recycled Glass!

NO Free Silica, Beryllium or other human Toxins! Great White Metal Finish and safer than Slags!
Call us at 866-775- 6226


World of Concrete
Accept No Substitute

This is World of Concrete—a firm foundation for the concrete and masonry industries and the first and most important international annual event of the year.


Fischer Technology Inc.
MP0R with rotating display screen

Automatic rotating display screen just like your smart phone. Click for Video
Call 800-243-8417


Dampney Co., Inc.
High Temperature White Paint

New Coating with not yellow, remains white and will withstand temperatures up to 1,200ºF


CHLOR*RID International Inc.
HOLD*BLAST: Buy time for pennies per sq ft.

* Stop flash rust
* Vapor blasting
* Wet blasting
* UHP water jetting
* No residue

 
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