! google ad section start! google ad section end! google ad_ I’d advise anyone attempting to sliver solder 15% using mapp gas to give up. I tried it, but I couldn’t get it hot enough for anything but straight conectors. I ended up setting up an oxy/acet via the back of a lorry through friends of friends.
It’s worth doing yourself if you can obtain the equipment (I tried a few rental companies and couldn’t find anything around $200), and if you can get the gear for free, yeppppeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
What kind of gas do you use to solder silver?
A standard household propane or butane torch can suffice, but one of the new MAPP gas-burning torches is preferable. They’re available at most hardware stores. They burn far hotter than regular torches, allowing for faster and easier silver soldering.
Is MAPP gas suitable for soldering?
Lead-free solder melts at a greater temperature than lead-based solder, which is now prohibited. MAPP gas torches are hotter than propane and are therefore a better choice for contemporary solder. Most 1/2- to 3/4-in. pipes and fittings only require five to ten seconds of heating with a MAPP gas torch before solder can be fed into them. But proceed with caution. MAPP gas makes it easier to overheat a joint. The joint is overheated if the flux turns black and the solder refuses to flow into the fitting.
Why did MAPP gas production cease?
Because of its high flame temperature of 2925 C (5300 F) in oxygen, genuine MAPP gas can be used in conjunction with oxygen for heating, soldering, brazing, and even welding. Although acetylene has a higher flame temperature (3160 C, 5720 F), MAPP has the advantage of requiring no dilution or special container fillers during transportation, allowing a larger amount of fuel gas to be transported at the same weight, and it is considerably safer in use.
Due to the high concentration of hydrogen in the flame (greater than acetylene, but lower than any of the other petroleum fuel gases), a MAPP/oxygen flame is not totally suitable for welding steel. The hydrogen corrodes the welds by infusing itself into the molten steel. This is not a severe concern for small-scale MAPP welding because the hydrogen escapes rapidly, and MAPP/oxygen can be utilized to weld small steel pieces in practice.
Underwater cutting, which necessitates high gas pressures, MAPP/oxygen was shown to be beneficial (under such pressures acetylene can decompose explosively, making it dangerous to use). Underwater oxy/fuel gas cutting of any kind, on the other hand, has mostly been supplanted by exothermic cutting, which is faster and safer.
MAPP gas is also utilized in air combustion for brazing and soldering, where its higher combustion temperature of 2,020 C (3,670 F) in air gives it a modest edge over rival propane fuel.
The most significant disadvantage of MAPP gas is its high cost, which is typically one-and-a-half times that of propane at the refinery and up to four times that of propane at the consumer level. It is no longer widely used in large-scale industries. for consumers on a broader scale When high flame temperatures are required, acetylene/oxygen is more cost-effective than MAPP/oxygen, while propane/air is more cost-effective when large amounts of overall heating are required.
A MAPP/oxygen flame, on the other hand, is still extremely desired for small-scale users, as it has higher flame temperatures and energy densities than any other flame other than acetylene/oxygen, but without the hazards and hassles of acetylene/oxygen. It comes in handy for jewelers, glass bead makers, and a variety of other craftspeople. The high heat capacity of the MAPP/air flame is particularly valued by plumbers, refrigeration and HVAC experts, and other craftsmen; MAPP was frequently utilized until recently, and was provided in small to medium size containers.
Blowtorches are used to brown and sear food cooked sous-vide at low temperatures. MAPP gases should be used instead of cheaper butane or propane, according to Myhrvold’s Modernist cuisine: the art and science of cooking, since they create greater temperatures with less chance of giving the dish a gas flavor, which can occur with incompletely combusted gas.
Is MAPP gas sufficiently hot to braze?
Any mapping gas larger than 3/8″ will not get it hot enough.
Before you begin soldering it, you must first heat it.
If he doesn’t want to invest in a torch equipment, you can utilize the glue-like substance.
I’m not sure what it’s called, but it’s something along the lines of a solderless bond.
When possible, I advocate using oxy/acetylene torches and 15 percent silver solder, although I did use that glue thing on a refrigerator today just to see how it worked.
It can withstand pressures of up to 850 psi, and I put it through a 300 psi nitrogen pressure test, which it passed.
Is silver solder more resistant to corrosion than brazing?
Many people ask us what the difference is between soldering and brazing.
They are fairly comparable joining procedures in that they both involve melting a filler metal to join two or more components without melting the component’s base material.
The American Welding Society (AWS) defines brazing as a procedure that uses a filler metal with a liquidus temperature of more than 450 degrees Celsius (842F).
Soldering, on the other hand, uses filler metals with a liquidus of 450 degrees Celsius or less.
The situation is made much more complicated by the use of terminology like “Solder in silver.
This is a misnomer because all silver-based alloys melt well over 450C, indicating that they are brazing filler metals. The correct name for all brazing alloys, including silver-based alloys, is “filler metals for brazing For unique compositions of brazing filler metals, the AWS has devised a designation system that uses the principal element(s) plus a number. All identifiers begin with the letter “B,” which stands for “brazing.” BAg-x is the designation for silver-based alloys, where x is a number that corresponds to a certain alloy composition. BAg-1 is 45 percent Ag, 15 percent Cu, 16 percent Zn, and 24 percent Cd by weight. BAg-34 has a nominal composition of 38 percent Ag, 32 percent Cu, 28 percent Zn, and 2% Sn. Aluminum-silicon filler metals (BAlSi-x), magnesium filler metals (BMg-x), copper, copper-zinc, and copper-phosphorus filler metals (BCu-x, RBCuZn-x, and BCuP-x, respectively), nickel and cobalt-based filler metals (BNi-x and BCo-x, respectively), and gold-based filler metals are some of the other brazing filler metal families (BAu-x). Brazing filler metals include titanium, palladium, platinum, and other metals. Brazing can be found in a variety of places, including automobiles, jet engines, cookware and cutlery, and HVAC systems, to mention a few.
In addition to having a lower processing temperature, soldering often produces a weaker joint than brazing.
This is suitable and even desirable for many applications.
Brazed junctions often outperform soldered ones by a factor of five in shear strength.
Sensitive electronics or small components can be harmed by excessive heat.
Soldering and brazing heat can be applied in a variety of ways, including flames, resistive heating, inductive heating, laser use, combustion and subsequent radiant heating, and so on. Soldering and brazing can be done in open air or in protective atmospheres (typically with a flux to remove surface oxides and permit wetting and flow of the solder or braze filler metal) (e.g. inert, vacuum, or active atmosphere). Many metals and metallic alloys, ceramics, and composite materials, as well as like and dissimilar materials, can be joined using both processes.
The answer is dependent on a number of parameters, including the service load and the temperature, to name a couple.
The high temperatures required for brazing harm many substrates.
Another important factor to consider when choosing the right procedure is the wettability of the substrate by the solder or brazing filler metal.
Closed loop systems that cannot be easily cleaned after joining must often be brazed or soldered in vacuum or under a protective atmosphere, or a self-fluxing filler metal such as copper-phosphorus alloys (BCuP-x) must be employed in copper-based assemblies. Certain ‘no-clean fluxes’ leave little residue after joining, however hardened residues can cause abrasive wear in moving components with narrow clearances, or they can hydrolyze and cause corrosive conditions.
Is silver solder a more durable option than normal solder?
Welders have used silver solder for years as a silver-based filler metal. It’s a silver alloy with other metals added, making it stronger and more resistant to damage than standard aluminum or copper soldering wire. Silver solder’s key constituents are usually silver, zinc, lead, tin, and copper.
Silver solder can also be manufactured with brazing alloys having a silver content of 86 percent, such as silver-copper-zinc (SAC) silver solder.
Silver solder with a silver basis has a greater melting point than silver solder with copper or aluminum. This means that silver solder melts at a greater temperature and takes less heat to melt, making it a better choice for individuals who need to execute welding on metal with a high thermal conductivity (such as steel). Silver solder, on the other hand, has a higher thermal conductivity than copper and aluminum silver solders, making it less suitable for welding applications that require less heat.
Because the greater melting point makes it easier to weld, silver-based silver solder is commonly used when joining two pieces of steel or other metals with high heat conductivity. Silver solder, on the other hand, is more expensive than other forms of silver solder, therefore you’ll need a high-temperature torch to work with it (such as an oxyacetylene or propane welding torch)
To melt silver, what sort of torch do I need?
If it’s something like this – http://www.ebay.co.uk/itm/POWERGAS-B…-/151983535003 – I’d advise against it.
For the money, the runtime on those O2 cylinders is abysmal; if you get even 15 minutes out of one, you should be happy.
Working with a larger O2 cylinder or an oxygen concentrator becomes a reasonable choice due to rising consumable expenses.
A propane torch, like as a Sievert, can generate a lot of heat, which is sufficient for casting ingots, though it’s best to use it in a brazing hearth to keep the heat contained.
Is it possible to solder silver with a soldering iron?
CAN I USE A SOLDERING IRON TO SOLDER STERLING SILVER? Soldering sterling silver with a soldering iron is not recommended. To get the right temperature, you’ll need to use a gas torch.
Can sterling silver be soldered to stainless steel?
Stainless steel must be welded for the strongest bond. Silver solder will stick to stainless steel if properly prepared, and you can solder copper, brass, or additional stainless steel to it. The bond will only be as strong as the silver solder, not the stainless steel. However, if your application does not necessitate steel’s strength, roll up your sleeves and get to work.