In one of our products, we are using a block of cast aluminum as a heat exchanger and we would like to try to coat the aluminum with porcelain enamel. We have been told that this cannot be done because the high temperature of porcelain enameling would destroy the aluminum.
I have some thoughts on the question asked by L. M. in the October Painting Clinic with regard to the sagging of waterborne coatings in the Summer months.
We want to produce pressed-iron right circular cylinders and want to paint them using a polyurethane enamel in several colors. How do you suggest we go about this?
We recently changed to a fast drying enamel. Now, we get definite striations on the painted parts. What is causing this problem and what can we do about it?
We recently noticed our paint use was increasing, so we checked the dump tank and found it full of paint because the discharge valve was leaking. Now we are having trouble with color shifting and hiding of the painted parts.
We are having clogging problems with the spray cans. In the plant, we just grab another can, but at the job site, there is often only one can available. What can we do to solve this costly problem?
We ended up covering the lagging with sheet metal, which we painted with our standard paint finish to match our units. I am looking for a less expensive way to lag our air tanks. Do you have any good ideas?
We frequently have humidity problems with our paint booth. Today, for example, the humidity reading in our paint room is 83%. Many of the specs call for no more than 50% humidity allowed. What type of vendor should we contact to solve our problem?
We have heard of a pretreatment process that can be used prior to e-coating to fill in any porosity in the castings. I’m trying to find additional information about this product.
I am inquiring if there is a general rule of thumb on applying waterbased coatings in the Summer. Are there any ranges the industry uses when selecting environmentally controlled booths?
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