Summary for boron carbide coating Discussion
Boron carbide coating for textile spinning rings is discussed as a possible surface-treatment route for SAE 52100/100Cr6 bearing steel rings. Prasham Kothari asked whether boron carbide could be coated on the steel, noting a competitor’s use. Guillermo Marrufo replied that if a competitor is doing it, it is possible, and suggested looking into PVD or CVD technologies. Neelakantan Margam added that boronizing is another surface treatment, but it is a high-temperature, long-cycle process; if the goal is mainly wear resistance, he would instead consider coatings such as TiN, TaC, or VC, while also weighing cost and the specific process route, including CVD, PVD, or TRD. Dr Jeff Ferreira noted that one of the first successful TRD applications in Japan was in the textile market, in an application similar to rings. The thread points to process selection and cost as the key decision factors rather than a single fixed coating.
Q. We are a manufacturer of Textile Spinning & Doubling Rings. These rings are made up of SAE 52100 Grade Bearing Steel. We have come to know that some of our competitor is using Boron Carbide as coating on their rings. Is it possible to coat Boron Carbide on Bearing Steel (100Cr6).
Kindly advise.
Prasham Kothari
textile machinery spares – Surendranagar, Gujarat, India
2005
A. You said you knew your competitor is doing it, so you know it it possible :-)
Look into PVD [physical vapor deposition] or CVD [chemical vapor deposition] technologies.
Guillermo Marrufo
Monterrey, NL, Mexico
2005
A. Boronizing is also a surface treatment — but it’s a high temperature, long cycle time oriented process.
If you are looking at this process for just increasing the wear resistance, I would rather look for alternate coating with materials like TiN [titanium nitride], TaC [tantalum carbide] or VC [vanadium carbide].
However, cost could be a factor based on the process employed like CVD or PVD or TRD [thermoreactive diffusion]
I suggest that you can elaborate your end requirement and the target costs — that would help in the right process selection.
Neelakantan Margam
– Chennai India
March 7, 2008
One of the first successful applications of TRD in Japan was in the textile market, with an application similar to rings.
Dr Jeff Ferreira
– Johannesburg, Gauteng, South Africa
March 27, 2009
Ed. note: For further info please see letter 18074 “TRD [Thermoreactive Diffusion] Carbide Coating”
Sorry to stay away from this page for long time…
Yes cost is a big issue as this product is sold in excess of 20-30k pieces every month. So unless the cost is within 20-30 INR… It wouldn’t be viable.
Prasham Kothari [returning]
textile machinery spares – Surendranagar, Gujarat, India
September 24, 2009