Rodger Talbert Columnist

Refurbishing Gas Cylinders

We refurbish LPG cylinders and apply powder coating over the shot-blasted cylinders, but we have trouble getting coverage into the deep areas where the collar and foot-ring are welded onto the pressure vessel. I am looking for a nozzle that can resolve this problem.

Coating Process Options

What pretreatment process and conversion coating would you recommend for plating and powder coating on fluid-handling tubes, some of which are bent before powder coating and some after?

Powder Coating Stainless Steel Pipe

Can we powder coat AISI 304 stainless steel pipe to our color of choice?

Rust Prevention

Is our process for pretreatment and powder coating of outdoor enclosures good enough to prevent rust from appearing, and, if so, how long would it last?

Applying Metallic Powder

We apply a metallic, silver powder to sandblasted parts, many of which are also processed through a five-stage iron-phosphate wash system. We have a lot of problems with the pigment “bunching” and standing up on the edges, and cannot seem to eliminate the problem.

Controlling Film Thickness

Breathing Protection for Powder Coating

Cure Cycle for Brass

Clumping of Powder

What causes some of our powders to clump up and resist fluidization and flow?

Powder Gun Voltage Adjustment

We currently are using spray guns where we can only control the KV and not the micro amps and are having a problem with the film thickness of a particular polyolefin powder.

Preparing Steel for Powder Coating

We powder paint steel machinery structures and have several questions.

Coating Thickness Guidelines

Are there any guidelines for film thickness for a powder coating operation?