IndyExterior
New member
I have a customer that wanted some very used aluminum dry bulk trailers cleaned off. Old with cement and fly ash stains surrounding the fill holes. Very reasonable guy with low expectations. We did one test and threw everything we had at it. Including the standard aluminum brightener with Phosphoric Acid, Sulfuric Acid, Ammonium Bifluoride, and even muriatic acid alone and never really came close to what I would call acceptable. We don't use HF products and I don't care to.
The customer thought they were greatly improved and had us do several more. I thought it was a waste of his money and told him so but he was happy and I took the work. In the process to improve this I asked him if he had a trailer I could experiment with. So he virtually gave me one to try anything I want when I want. So I'm asking anyone with any ideas to post them and I'll give it a try and post the results. Hopefully a benefit to any fleet washers out there.
I've searched in and out of this forum and found nothing on fly ash cleaning which is a by product of burning coal. Some of you seemed well versed in chemistry. Any ideas?
The customer thought they were greatly improved and had us do several more. I thought it was a waste of his money and told him so but he was happy and I took the work. In the process to improve this I asked him if he had a trailer I could experiment with. So he virtually gave me one to try anything I want when I want. So I'm asking anyone with any ideas to post them and I'll give it a try and post the results. Hopefully a benefit to any fleet washers out there.
I've searched in and out of this forum and found nothing on fly ash cleaning which is a by product of burning coal. Some of you seemed well versed in chemistry. Any ideas?