I am looking for some ideas to protect threads or special features when hot dip galvanizing. In the past we have used 100% silicone and hi temp RTV, but these are only good for 400 degrees. The acid bath is 840 degrees. Every time we would have to chase the threads. I called up to our galvanizer and he said to use either liquid nails or hi temp grease. I did find a select few "greases" but most are rated for 400-500. I found an extreme temp anti seize good for 3,000 degrees. Considering the main difference between grease and anti seize is oil vs. metal, I am going to give this a shot. But considering we have we have a bunch of 1 1/2 deep threaded holes on this upcoming run, I don't want to take the chance and cross my fingers. I also think liquid nail would require chasing threads...more than I would want to.
Yes, there is putting bolts on the holes, but that can get sketchy with small holes.
Does anyone have secrets they would like to share?
Yes, there is putting bolts on the holes, but that can get sketchy with small holes.
Does anyone have secrets they would like to share?