Hot dip galvanised

ASTM B 695 is titled, "Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel". You referred to a former edition (85). The current one is 04 (ASTM B 695-04) which is available from www.astm.org or from many companies that sell or resell industry standards.

can u explain the process and standard

http://www.galvanizeit.org/content/index.cfm?fuseaction=showContent&contentID=162&navID=204

Thank you very much

Regards

Dinesh

As already said, ASTM B695 is related to "mechanically bonded coating" in which usually the Zn is in powder form. Hot dip means batch or continuous immersion in a molten zinc bath. This is a "chemical bonded coating" because some intermediate compounds are formed between the steel and the pure zinc coating. The coating can be just Zn or Zn + Fe, Zn +Al,...

Zn + Fe coatings have up to 15% Fe and is achieved by hot dip galvanizing in pure Zn followed by an annealing to allow Fe diffuse into the coating, this method is known also as "galvannealing".

For more information, apart of the good link already posted, see ASTM B 653.

Kind regards

Hi Kwetz

Thank you very much for your information

Regards

Dinesh

Hello ,

I am a student doing a project for the different types of GAlvanising process. Normally used are Electrogalvanising and Hot Dipped Galvanising. I wanted to do research on Mechanical Galvanising for Fasteners or small steel plates etc.

Can you inform details of ASTM B695.

The chemicals required for Mechanical Galvanising.

And the process for Mechanical Galvanising.