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Removing carbon layer from mild steel by alkaline cleaning methodDecember 14, 2010
sir please help me to remove a hard black carbon layer from ms- plate by using any alkaline based treatmentHemant Sharma
owner of company - Faridabad, Haryana, India
January 21, 2011
Dear Mr. Sharma,
You can try the following step:
1. Hot Degreasing
2. Anodic Cleaner (I)-High Alkaline
3. Acid Pickling - HCl 40% v/v + inhibitor or and accelerator
4. Anodic Cleaner (II) - High Alkaline
5. Acid Dip
6. Next treatment.
We tested and got good result.
Try and you can see the result.
- Jakarta, Indonesia
January 22, 2011
A high pressure water jet can be very effective. Don't try it on small parts - it will throw them all over the shop.
February 17, 2011
first what kind of metal finishing you will make in the surface of this carbon steel ?
if you will make any kind of electroplating you must work in the following sequence
1- hot soak chemical degreaser
2- cold rinsing
3- hot cathodic degreaser
HCl 40% by volume at room temperature
6- hot anodic degreaser
7- cold rinsing
7- complete the sequence of electroplating
if you will painting it you must make the following sequence
1- hot soak or spray pre-chemical degreaser
2- hot soak or spray chemical degreaser
3- hot (50- 65 C ) sulfuric acid 8 - 10 %
4- cold rinsing
5- cold rinsing
6- alkaline passivation
7 hot dryer
metal finishing expert - Egypt
March 19, 2011
Lots of ways and options. Put a picture of the part on to enable select the right one for you.
Bangalore, Karnataka, India
March 23, 2011
In addition to one of the pre-treatment sequences already mentioned, the use of an ultrasonic transducer in the first rinse after the sequence should help to remove any residue that is still on the steel.Lyle Kirman
consultant - Cleveland, Ohio
March 29, 2011
The advises given are good. Just one final comment. Are you sure it is carbon? It could very well be iron oxide.
Monterrey, NL, Mexico