The Vitreous Enamelling Process - A.J Wells & Sons Ltd.
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- Опубликовано: 24 июл 2024
- A.J Wells & Sons Ltd is a British manufacturer of signage and architectural cladding. We specialise in Vitreous Enamel - A durable surface finish achieved by fusing glass particles to sheet metal by firing it at temperatures in excess of 800°C. This results in a surface that is incredibly hardwearing to all the elements. The process also ensures that it is colourfast; so whereas standard surface finishes will fade or peel over time enamel stays as vibrant as the day it was produced regardless of the weather conditions. Graffiti can also be easily removed using solvents without affecting the graphics or enamel and the surface also requires very little maintenance making it an unrivalled product for the urban environment.
The company produce much of the signage and panelling for London Underground. Visit www.ajwells.com to see the full range of applications. 
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Interesting video. How often I take for granted the things we have all around us. It was good to see an example of how one such thing, a sign, takes some care and sophistication to produce.
A beautiful film, well made and perfect in it's simplicity. I'm gorging on screen print vids and this is a lovely change from shouty corporate stuff. Thank you.
Nice. I didn't know that TFL signs were put together with such attention to detail and complexity.
Thanks - amazing
Thank you for the making of this great video, it was really entertaining and informative. I also liked the sounds in this video it is very attractive.
asmr quality
nice Thnks for sharing this video.
Hi, very good i'm seeking for long if we could screen print enamel base... What kind of ink do you use?
I have a serie of vergine enamel mugs to customize and would like to do it with screen printing...
great video, how can i learn it
hello,
this is something amazing, where can i learn this process.
Thanks
Hi, Thanks for the wonderful video, actually I have some question if you can help us out
first of all what are the chemicals you used in the mixture what are their purpose.
why i am asking you this. i was also doing the same but facing ship off at the end and fish scale at the end of the firing
can you suggest anything
P.S:- I am using ferro enameling powder
Also I'm facing same issue can I communicate with you
mutaz.jariri@signworldme.com
what is the life for signs. how much warranty you offer. what does warranty covers.
Very interesting, no secrets given away. Mix would appear to be carbon black (lamp black) glass and quartz powder. Fullers earth might possibly be useful for a more grey colour. These have to be very stable colours. Titanium oxide would be good for the whites. The second firing at 40deg. lower is interesting, is this the glass /quartz ratio, hence the need to an accurate weighing scale. Must have a go.
I don't think carbon black or fullers earth would be candidates, the temperatures involved are 800+ deg C. I do this very process myself. Fullers earth? If you mean clays then yes wet process enamels do use very small quantities of certain types of clay to help keep the fine particles in suspension but it is not used as a colouring agent as you suggest although a black enamel may well become less intense with clay additions above the usual 4%, in general clay is not viewed as a desirable addition in terms of finished enamel quality, it is seen as a necessary addition for the spraying process - if you could spray well without it then you would probably not include it.
I should add that a different form of carbon, graphite can be added to enamels without burning off, some artists like to roughen an enamel surface, then draw on it using a pencil and then add a final transparent layer of enamel in a second firing. Graphite can take the heat - it is also used for making crucibles for molten metal.
The black thing looks a lot like graphite powder. Even the container looks like something you'd use for some cheap and dirty material.
The last thing looks awfully similar to plain old borax (it has to be some kind of salt, or at least hidroscopic and soluble, look at those crystals sticking to one another).
And wikipedia says "Frit for enamelling steel is typically an alkali borosilicate glass". Now, I'm no chemist that's for sure, I think that borax decomposes to boric acid when heated, so the alkali throws me off, but I do know it's used in enamels and glasses. And "borosilicate" needs a boron source, right?
I just couldn't resist adding to the speculation ;)
@Jonnie , what is the correct temperature for base coat ? we spray white and it come out as black . but after color spray it come out and color fall off or peel off. need help . from KOREA.
Where can you purchase the enamel colours?
Fascinating. Got to say it looks like a dirty and dangerous job though.
Cool. What's the spray gun model he used?
Looking at 3:24 it might be a Devil Bite GTI Pro - sorry for being 8 years late.
I'm curious what size tip would be needed to spray this type of enamel
what is the black powder he added?
I'm naively guessing "pigment" though checking Wiki, colour is a result of different added oxides.... so an oxide ie pigment to do black???
aluminum oxide ,
it's a clay...plastic ball clay
What's the waterfall for?
It pulls the fumes away when spraying. An alternative would be a large filtered wall with a vacuum system.
I was about to ask the same thing. Originally I thought maybe it was just for ambiance then I realized I saw one in someone else's enamel spray room.
@@drewnicest4319 Another commenter said that it traps and pulls away fumes; it's an alternative to an extractor fan.
I saw that thank you. I don't fully understand how. Not much info on this type of work online.
@@drewnicest4319 I did a little Googling and only found a few Websites selling these systems, yeah, there's not much info on how they work. I guess it's such a specialty product, only those who need one/sell them need to know.