584,837 active members*
5,425 visitors online*
Register for free
Login
IndustryArena Forum > Mechanical Engineering > Epoxy Granite > EG+Hollow section preparation
Results 1 to 5 of 5
  1. #1
    Join Date
    Apr 2021
    Posts
    8

    EG+Hollow section preparation

    I'm preparing to filled some hollow sections with EG. The inside of the hollow section is not greasy to the touch but there is a with a black substance that is powdery to the touch. Just like when we touch the side of a exhaust pipe.

    I tried removing that substance with some turpentine soaked rags attached to one end of a hollow bar which worked okay for areas near ends of the hollow sections. But cleaning the entire inside of the hollow section is a real pain as it is difficult to reach all the areas inside with sufficient pressure to remove the substance.

    Will that black powder substance prevent the EG from adhering properly to the hollow section?

  2. #2
    Join Date
    Jan 2008
    Posts
    1523

    Re: EG+Hollow section preparation

    Steel hollow sections?
    7xCNC.com - CNC info for the minilathe (7x10, 7x12, 7x14, 7x16)

  3. #3
    Join Date
    Apr 2021
    Posts
    8

    Re: EG+Hollow section preparation

    Quote Originally Posted by pippin88 View Post
    Steel hollow sections?
    Yes. S275 mild steel to be exact.

  4. #4
    Join Date
    Jun 2022
    Posts
    6

    Re: EG+Hollow section preparation

    But cleaning the entire inside of the hollow section chinese buffet near me is a real pain as it is difficult to reach all the areas inside with sufficient pressure to remove the substance.

  5. #5
    Join Date
    Jun 2022
    Posts
    58

    Re: EG+Hollow section preparation

    Its sounds like its a mill scale and people have used acid and vinegar and at least several other options to remove the scale...I was concerned with the same mill scale and what to use so I reached out to a welding forum and it was suggested to thy this...https://www.amazon.com/75-Pure-Vineg...p_0_10_t...its a 75% concentrate of vinegar in which you add water and get the job done...With all aside I bought 2 containers to use however I have not gotten around to using it yet but am expecting positive results...
    best of luck and you are right to be concerned with this if you are filling up with resin or concrete...It will perhaps not all but enough will break down and break away from the metal surface...
    Paul

Similar Threads

  1. Preparation and design questions.
    By janz99 in forum CNC Plasma / Oxy Fuel Cutting Machines
    Replies: 2
    Last Post: 05-14-2015, 12:09 PM
  2. preparation transition?
    By kjl-pdx in forum Mach Software (ArtSoft software)
    Replies: 0
    Last Post: 04-04-2013, 04:55 AM
  3. New Sieg C3 Out of the Box Preparation.
    By microid in forum Mini Lathe
    Replies: 2
    Last Post: 12-24-2010, 06:48 PM
  4. tool preparation
    By Ahnungsloser1969 in forum SIEMENS -> Sinumerik 802D/808D/810D/828D/840D
    Replies: 3
    Last Post: 03-09-2010, 10:48 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •