Laser Cleaning Encrusted Bitumen on Steel
Steel with an encrusted bitumen layer hides the metal under tar that holds dirt. How the coating comes off in layers, leftover sticky residue, fumes from heated bitumen, and whether the steel underneath is pitted or still sound decide the pass.
What This Video Shows
Short B1opfUqArzw shows pulsed laser clearing encrusted bitumen from steel in 27 seconds without grit.
Questions this footage answers
What does this Short show about encrusted bitumen on steel?
The clip is a 27-second pulsed-fiber demo on steel carrying thick encrusted bitumen. You see the bitumen leave the metal face while the steel stays in frame. It is footage proof that contactless cleaning can clear bitumen soil from steel, not a timed quote for every coating thickness or part shape.
Why avoid scrape or solvent work on bitumen this thick?
Scraping risks gouging the steel under thick bitumen, and solvents leave residue plus disposal burden. The Short shows the laser path clearing encrusted bitumen while the steel outline stays readable for the next coating or weld step.
Can I copy this traveler straight onto another bitumen-coated part?
Use the Short to see bitumen leave the steel, then coupon scrap that matches the next coating thickness before production. A copied recipe can mark soft faces when the bitumen is thinner than the demo piece. Match scrap first, especially ahead of coating removal work.
What keeps the steel safe under bitumen?
Stop once bitumen stops leaving the face, and keep energy under the carbon-steel injury band on coupon scrap. Published ns 1064 nm work puts steel injury near 5.7–15 J/cm², so coating passes should stay below that ceiling while soil is still clearing.