(Cycles thru suppliers)


Letter 42012

Require rust prevention on black oxide part  

++++++


We are exporter of steel forged and machined product to our US customers. We are presently stuggling with a rust problem on one of our component. We are presently manufacturing a wood cutter it is basically a forged component which is then machined, heat treated and finally teeth grinding is carried out. This is then sent for Black Oxide, now since it is a cutter so our basic requirement is adhesion (i.e. blackening remains even after cutting operation) after blackening WD-40 [link is to product info at Amazon] is applied for rust prevention. Finally before packing the product its teeths are coated with wax. Now we are facing the problem here that our product starts rusting in the wax coated area (Wax coated area comprise of a cavity which is non-machined forging part and grinded tooth). Rusting problem is basically encountered in the forged cavity. So we require some suggestion on this to prevent our parts from rust. Then other thing which we observed was that as the WD-40 has lower flash point it gets evapourated while wax coating , so we are also looking for some rust preventive with higher flash point somwhere 160-200 degree celcius.

RANJAN SHARMA
- NOIDA, U.P., INDIA


++++++

The WD-40 and hot-melt wax are not the most appropriate materials for this purpose.

The black oxiding process should include dipping in a water-displacing rust preventative that dries to a thin, dry-touch film. The black oxide chemical suppliers have such products. Don't know whether the US companies -- Electrochemical Products Inc., Heatbath Corporation, John Schneider and Associates Inc., Luster-On Products -- distribute in India, but the Indian company Guardian Anti-Corrosives Private Limited surely does.

Ken Vlach
- Goleta, California  


Dear Reader, please --

Answer or follow-up on this subject (in non-commercial fashion).
 
My company is a supporting advertiser at finishing.com and we want the contact information to reach the inquirer privately.
 
Post a new question or inquiry on a different subject.
 


Legal disclaimer boilerplate button

List of Directories
Jobshops Directory button Environmental Directory button Equipment Directory button Consultants Directory button Chemicals Directory button Test Directory button Help-Wanted Directory button About Advertising button Classifieds Directory button Booklist button

 

Link to Del.icio.us button Save This Page (why?)    -    Home    -    ©1995-2009 finishing.com