INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Contact USThanks. We have received your request and will respond promptly. Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting Guidelines |
|
Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.
Here's Why Members Love Eng-Tips Forums:
Talk To Other MembersRegister now while it's still free!
Already a member? Close this window and log in.
RE: Waterblasting Steel
Abravise blasting is usually the fastest and cheapest. This fact depends on how strict are the local enviromental regulations on blasting in the open.
If you have to make a big containment effort the cost factor will quickly swing the other way. Depending on local environmental regulations and the intended end use of the steel there are additives that will help mitigate flash rusting.
Watch your contractor, if the regulations are similar to the ones in my state the cost of blasting in the open falls on the owner of the equipment being cleaned. The contractor gets the small fine and you get the large fine.
RE: Waterblasting Steel
You may have to contain the blasted-off paint, if contains lead or chrome.
Adding about 0.5 wt% of a polyphosphate to the water prevents flash rusting (1% worsens paint adhesion). There are probably better but more expensive additives, and always environmental issues.