THERMAL SPRAY AND YOUNG ENGINEERS

[Vijay Deshpande]

Dear All,
Thermal spray is one of the very interesting and artistic line of engineering. How ever what i find today is not many young engineers are interested in this line. Is it only happening in India or every where ?
Vijay Deshpande

[Gordon]

Hi Vijay

I think it is a general lack of awareness globally. I don't necessarily think that interest in thermal spay is declining in engineering, but possibly a declining proportion of students that go on to study engineering and physic type science subjects generally.

[Alexangel1226]

Hi Gordon and Vijay,

As the surface engineering industry and aviation industry is booming, more and more people esp younger generation, or engineers are working in this line. I personally knew quite alot of younger group of engineers working in this line, including me.

I have been in the field for near 4 yrs after graduation from chemical/process engineering background, previously in the Power turbine service repair shop but now in the Aircraft business. Generally much more stringent req,great exposure and fantastic learning as well.

I agree with you that it's a artistic and challenging line .

Regards,
Alexangel1226

[howied]

Hi All,

I am just a young engineer who is working on thermal spraying.I am from China,and we are doing plasma coating parts for GE,actually thermal spraying is specific for certain field as aircraft,printing machine,automobile,etc.I very interested in this process,however i just being invloved in for about 2 years.I will need to learn and step forwards by practicing and researching.

[Alexangel1226]

Howied,

Welcome to the Surface Engineering world .All the best to you.

Regards,
Alexangel

[Gordon]

Hi Howied

to the Surface Engineering Forum.

Hi Everbody

Quote:I think it is a general lack of awareness globally. I don't necessarily think that interest in thermal spay is declining in engineering, but possibly a declining proportion of students that go on to study engineering and physic type science subjects generally.

In hindsight I think I should remove "globally" and insert local to me where manufacturing industries are in decline generally. It does appear to be very different for those countries going through industrial growth. So I'm a little surprised at vijaydeshin original post concerning India.

[Alexangel1226]

Gordon - Maybe Vijay's location and reference not to India Industries =) but in similarity to your "locally" context.

Regards Alex

[Gordon]

Alex, I think you are probably right. It's a relativity thing

[novakmichal86]

(03-29-2007 11:38 AM)Gordon Wrote:  Alex, I think you are probably right. It's a relativity thing

Hi I come from Czech Republic, I am 27-year-old and I am very interested in thermal spraying. I work for company, which use HVOF. We focus on ball valves.

However, I have a problem with chromium carbide coating, because we have sometimes some cracks. Could you help me, please?

Thanks!

Michal

[Alberto Villalobos]

Hi novakmichal86

I am 26 years old and I have been working with thermal coating during 3 years. I apply coatings using HVOF, Combustion Spray (wire and powder) and plasma spray.

We had the defect that you said (Cracks on coating chrome carbide) it is the result of high stress in the coating due to have much thickness.

Suppliers like Metco tell that the best coating thickness is under 0.015" more than this thickness results in cracks.

I hope that you get a coating without cracks.

Regards.

[eti_cortez]

Hi to all,

I am Santos from the Philippines. We are using Twin Wire Arc Spray using Inconel 625 to restore the castellation of our gland seal of the steam turbine. We also applied Tungsten Carbide through HVOF process as surface coating. However, after 3 years of operation, the bonding failed. Is there any thickness limitation found on API standards for Twin Wire Arc Thermal Spray? I have checked with API 687 on the HVOF thickness limitations on Table 1.D-1 at 25 mils (0.635 mm).

Anyone who have knowledge on this, I need your help.

Thanks.

Santos

[abhay]

Hi to all,

I am abhay from INDIA, we manufacture glass bottle molds, we started off in thermal spray with a puddle torch(super jet by castolin) for welding the edges of the mold. I fell in love with it, the moment i discovered thermal spray (not many engineering colleges in INDIA include thermal spray as a subject in INDIA, only came to know about it when i came into the field),

there is not much technical know how available in the INDIAN market also.

With a little investment and a lot of permutation and combination, we had started producing plungers(narrow and broad) for glass industry with a powder flame spray gun in 2014.

there is a scope for gas fuel hvof , coating wc12co on the narrow plungers
&
and a manual pta for the neckring mold in the industry,but the investment required is huge.

There was a two day course at ARCI by Christopher C. Brendt, which was my first formal introduction to thermal spray(loved all of it but understood only a tiny bit of it)

i believe such courses should be held at higher frequencies in INDIA.

It was very exciting, when i came to know about Rokide process, which i think is not spoken of much(APS/VPS, HVOF, twin wire arc, run most of the show i guess)

Thanks to the surface engineering forum, a lot of senior thermal sprayers share a lot of information here.

Thanks to all the members and senior members

[Johnny_Blaze]

To be perfectly honest, Thermal Spray has always been, and will forever be, a process created and perfected outside of Engineering.

There are some great material science engineers out there, but the engineering contributions end there where practical applications are concerned.

Complex problems are resolved practically by operators, laymen, who have a far better understanding of how the application process works, and, when young engineers are challenged by those that have over 20 years experience they are intimidated and eventually find new employment elsewhere because in the end, it is always the operator, "application specialist" that dictates the quality of the end product to the engineer and they are consistently embarrassed by the knowledge and experience of those who came before them....there's nothing new in thermal spray...the only impedance to competition is lack of knowledge by trusting that academics is a greater trade-off for experience and knowledge.

J.B.

[TS engineer]

Hi!

I am young TS engineer from Europe and I have been doing this for 5 years now.

I have done coating development with HVAF, HVOF, plasma and flame spray including hard metal, metallic and ceramic coatings.

This forum is very helpful. Thank you for all those who participate in discussions.

best regards