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Siver Soldering/Brazing
Hi this is my first post to this news group, my usual site is metalworking,
but in this case my problem is closer to jewellery so hopefully some one here can help. I have a sporran belt made of pierced sterling silver plates approx 1 mm thick , 17 wide by 27 mm long. The plates are connected by 5 mm dia rings soldered/brazed the ends of the plates and linked with solid rings 10 mm in diameter. One of the smaller rings has come adrift from the plate, due to a partial solder /braze joint that failed probably when caught on something. I know that I can take it to a jeweller for repair but being a hands - on type I would like to try this myself. How difficult is this repair? What solder and flux is required, and what is a good source for material. What heat source is required? Looking at the other plates on the belt I note at least 12 more rings that do not have a complete fillet at the joint. I have silver soldered other pieces in the model engineering and hobby fields, but that was brass,copper, and steel, but never silver or this small. Any suggestions or help will be appreciated. Ray |
#2
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Siver Soldering/Brazing
On 27/06/10 18:43, Ray Field wrote:
How difficult is this repair? Reasonably so. Jump ring soldering is a basic skill you learn when you're training. What solder and flux is required, Hallmark quality silver solder and borax if you're being a purist, but you can get silver solder a tube ready mixed. A tube will cost more than your repair being done by a professional. DON'T use a lead based solder, silver dissolves in molten lead... and what is a good source for material. Which continental land mass are you on? But http://www.cooksongold.com/ is where I get mine... What heat source is required? A small torch burning, usually, propane and oxygen (or air of you can get it pumped under pressure) Any suggestions or help will be appreciated. After soldering the silver will be blackened by oxidation of the copper within the silver. This is usually got rid of by a chemical 'pickling' process and then polished. -- William Black These are the gilded popinjays and murderous assassins of Perfidious Albion and they are about their Queen's business. Any man who impedes their passage does so at his own peril. |
#3
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Siver Soldering/Brazing
Ray Field wrote:
Hi this is my first post to this news group, my usual site is metalworking, but in this case my problem is closer to jewellery so hopefully some one here can help. I have a sporran belt made of pierced sterling silver plates approx 1 mm thick , 17 wide by 27 mm long. The plates are connected by 5 mm dia rings soldered/brazed the ends of the plates and linked with solid rings 10 mm in diameter. One of the smaller rings has come adrift from the plate, due to a partial solder /braze joint that failed probably when caught on something. I know that I can take it to a jeweller for repair but being a hands - on type I would like to try this myself. How difficult is this repair? What solder and flux is required, and what is a good source for material. What heat source is required? Looking at the other plates on the belt I note at least 12 more rings that do not have a complete fillet at the joint. I have silver soldered other pieces in the model engineering and hobby fields, but that was brass,copper, and steel, but never silver or this small. Any suggestions or help will be appreciated. Ray Hi Ray, Sounds as tho it needs a complete overhall, You say its sterling silver, now is it hall marked? judging by your spelling jewellery in the UK way, you might be over this side of the pond. So theres a good chance it is. This means its worth quite alot so its too risky to just try it and see. Youd be soldering a small item to a large one, not easy at the best of times. You will need hallmarking grade solder, at least easyflo flux, an oxygen and propane setup, some where to pickle it after brazing and possibly polishing it all so it matches, as well as somewhere suitable to do it all, I suggest you try and find a working silversmith and get a price to do it for you before you start to get together the above items. NowIf you do decide to do it yourself having put together the above kit, Id advise you make up at least 3 matching pieces and rings in copper or brass just to get your hand in so to speak. Keep practicing till you can get it right with ease. before you tackle the silver. Your probably used to solder in wire form Thats a bit too crude. you really need it in foil form and put a small snippet between the ring and the plate so you only use enough solder to make a neat fillet. Use plenty of flux, to keep the joint area free of oxide as well as preventing fire stain in the whole piece Let us know what you think. Ted Dorset UK. |
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Siver Soldering/Brazing
Lots of good advice here but the only thing that makes it as difficult
as it sounds is that you don't have anything to practice on so you have to get it right. I am no expert but have done a good deal of passable work and found it fun and challenging to learn how do to it. It should be noted that silver solder comes in various melting temps and sold as hard, medium and soft to facilitate attaching little things to big things so one doesn't melt while soldering the next. I would opt to the soft side here. I am not familiar with using Borax and use Easyflux as has been mentioned. As you probably already know, the key is getting both pieces to solder temp before any brazing can take place. This is some shade of red for all three solder types. Some clever person figured out where you live by your spelling but for what it's worth, I have purchased my supplies from Rio Grande. If nothing else, you can browse their catalog for lots of good info. I use a hardware store butane torch for large stuff and a mini-torch for small stuff. Good Luck, Jack |
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Siver Soldering/Brazing
On Jun 27, 12:43*pm, "Ray Field" wrote:
Hi this is my first post to this news group, my usual site is metalworking, but in this case my problem is closer to jewellery so hopefully some one here can help. I have a sporran belt made of pierced sterling silver plates approx 1 mm thick , 17 wide by 27 mm long. The plates are connected by 5 mm dia rings soldered/brazed the ends of the plates and linked with solid rings 10 mm in diameter. One of the smaller rings has come adrift from the plate, due to a partial solder /braze joint that failed probably when caught on something. I know that I can take it to a jeweller for repair but being *a hands - on type I would like to try this myself. How difficult is this repair? What solder and flux is required, and what is a good source for material. What heat source is required? Looking at the other plates on the belt I note at least 12 more rings that do not have a complete fillet at the joint. I have silver soldered other pieces in the model engineering and hobby fields, but that was brass,copper, and steel, but never silver or this small. Any suggestions or help will be appreciated. Ray The only thing I would add, if this is even a reasonably important piece, I URGE you to get some 'scrap' or 'example' pieces on which to practice. After you have prepped, soldered, pickled and polished representative pieces successfully a coupla times, THEN try the repair. |
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One of the smaller rings has come adrift from the plate, due to a partial
solder /braze joint that failed probably when caught on something. |
#7
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Brazing is the process of metal-joining where a filler metal is heated above and distributed between two or more close-fitting parts by capillary action.
__________________
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I am starting to work for sunlife Office 2007 Pro Plus Activation Key tomorrow and need my laptop to run Windows 7 Home Basic X64 for their software. Currently i have Office Professional Plus 2010 X64 installed. I want to know if I can split my hard drive and when computer boots I can choose xp or Office Pro 2010 32 Bit. So I can use xp for work and windows 7 for home. Since i don't have the cd for Windows 7 Pro Activation I don't want to remove it completely. Any suggestions and help would be appreciated!
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#9
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[quote=SaulVT;880485]I am starting to work for sunlife
Silver Solder As opposed to Silver Braze I simply obtained another call through somebody that were built with a large amount of problems with brazing. After we experienced this, it grew to become obvious that the issue was that he was attempting to use gold braze metal with a silver solder flux. He wasn't sure the main difference in between gold soldering as well as silver brazing. He or she visited a welding provide store where the sales person wasn't clear on the main difference possibly and the sales person offered him or her soldering flux for any brazing application. Flux will several things but primarily it is an oxygen interceptor. It is made to keep your supplies from oxidizing during brazing. If you achieve a good oxide coating created the actual braze metal and the two parts being brazed will not sign up for with each other. Silver solder is really a solder which has typically 1% to 3% gold inside it as well as melts about a couple hundred levels Fahrenheit. Gold braze or even gold braze metal might have 30% and 60% silver and it touches above 1100°F. These are estimates however they serve to demonstrate the main difference. Usually brazing takes place over 800°F as well as soldering takes place beneath 800° Fahrenheit. Gold solder flux and silver brazing flux tend to be 2 very different substances. Gold solder flux is designed to turn out to be energetic from very low temperatures and to work at very low temps. Silver brazing flux comes into play around perhaps 500°F approximately and stays active up to perhaps 1500°F. If you use gold solder flux for gold brazing then the silver solder flux is going to be all consumed prior to the alloys get anywhere near hot enough. If you use gold brazing flux with regard to silver soldering the metals is going to be seriously oxidized before the flux actually begins to become active. The word silver soldering is often accustomed to include just about all becoming a member of utilizing silver associated with a the total amount and therefore addresses silver brazing too. I am as responsible for doing this anyone. It would be for that general good of the industry general, and certainly the brand new people, in the event that much more treatment was taken in differentiating between soldering and brazing. Last edited by qsxan015 : December 5th 11 at 06:42 AM. |
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