finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 30012

Coating for cast iron to resist molten aluminum


A discussion started in 2004 & continuing through 2017 . . .

(2004)

Q. We are using cast iron thermocouples to sense the Aluminium metal temperature. That cast iron body will be always inside the furnace which has 680 °C metal, and the cast iron body is getting melted within 48 hours. Is there is any corrosive resistant coating available to protect cast iron body under this circumstance to increase its life?

K. Annamalai
plating shop - Chennai, Tamil Nadu, India


(2004)
wikipedia
Boron Nitride
-------

Boron Nitride

A. You may want to try a Boron Nitride coating. It's available in a spray or may be brushed on like paint. Boron Nitride will resist wetting by molten Aluminum and Al Alloys, it will be effective to about 2000 °C.

Good luck & Best regards,

Jim Sivertsen
Refining & Alloys - Alden, New York

(2004)

Thermocouple tubes are being coated with Boron Nitride Coatings in India to extend the life of the tubes.

Regards,

Mr. Manoj Saraf
- Kolkata, India


(2004)
wikipedia
Stellite
-------

Effects of Stellite-6 Coating on Properties of Stainless Steel

Dear Sir,

Stellite 6 coating can very well withstand that temperature and thermowell shall not have any problem.

J.V.PAWAR
- Pune, Maharashtra, India



Best coating for steel trough carrying molten aluminum

May 19, 2017

Q. We have a steel trough that we use to help pour molten aluminum from a bull ladle into a holding furnace at the die cast machine. We eat through a trough in less than a month. What coating could we use to help prevent the aluminum from destroying our troughs.

Alex Lubich
Co-op student - Brooklyn Center, Minnesota, us


May 23, 2017

A. The only coating that I can think of with a budget in mind that can withstand molten aluminum like a champ is Graphite.

Try an anti slip graphite coating on the inside of the steel trough; it can be sprayed or rolled/brushed.

Marvin Sevilla
- Managua, Nicaragua



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.