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Frequently Asked Questions

What is the difference between brazing and soldering?

Brazing & Soldering Products | Sil-Fos
Brazing - The AWS defines brazing as a group of joining processes that produce coalescence of materials by heating them to the brazing temperature and by using a filler metal (solder) having a liquidus above 840°F (450°C), and below the solidus of the base metals. Soldering - Soldering has the same definition as brazing except for the fact that the filler metal used has a liquidus below 840°F (450°C) and below the solidus of the base metals.

What is the difference between soldering, brazing and welding?

The Harris Products Group - Brazing, Soldering & Welding
Soldering - The AWS defines soldering as a group of joining processes that produce coalescence of materials by heating them to the soldering temperature and by using a filler metal (solder) having a liquidus not exceeding 840ºF (450ºC), and below the solidus of the base metals. Brazing - Brazing joins materials by heating them in the presence of a filler metal having a liquidus above 840ºF (450ºC) but below the solidus of the base metal. See similar questions...

Can the Henrob 2000 be used for Brazing and Soldering?

FAQs on the DHC 2000 / Henrob 2000 oxyacetylene torch
Yes the cleaner burning (low O2 content) flame usually makes brazing and soldering easier by reducing or eliminating the need for flux, The kit even comes with an air-acetylene tip, which is like a plumbers “Turbo torch”, however most people prefer the normal welding tips. The hotter, more concentrated flame allows faster heating of the joint to be brazed or soldered so less heat transfers to unwanted areas sometimes reducing or eliminating the need for heat sink compounds or devices. See similar questions...

Q.1. What differentiates brazing, soldering & welding?

Brazing Faq's,Frequently Asked Questions on Brazing,Question...
Ans. Brazing has been defined as a group of joining processes specially arranged in a manner to produce coalescence of materials. The process involves heating of these materials at a brazing temperature by using a filler metal (solder) which has a liquidus above 840°F (450°C), and below the solidus of the base metals. See similar questions...

What is the difference between brazing and welding?

Granite Industrial Gases - Resources - FAQ - High Pressure C...
Brazing is a process wherein metal is joined together by heating the base metal to approximately 800?F and then using a non-ferrous filler metal having a melting point below that of the base metal. The filler metal melts and adheres to the base metal. The base metal does not melt and there is no fusion as in welding processes. Most commercial metals can be brazed. See similar questions...

What are the many uses of brazing?

Brazing & Soldering Products | Sil-Fos
For many years, brazing has been the principal metal joining method used to fabricate heating, air conditioning and refrigeration equipment. Today, a typical HVAC unit may contain hundreds of brazed joints. Brazing is used to join copper tubing to return bends, copper tubes to headers and fins, and tube bundles to shells. Brazing joins both similar and dissimilar metals, thin and thick sections, and metals of widely differing melting temperatures. See similar questions...

How does brazing work?

Brazing & Soldering Products | Sil-Fos
Brazing creates a metallurgical bond between the filler metal and the surfaces being joined. Heat is applied to the base metals and the filler metal is brought into contact with the heated parts. When the filler metal melts it is drawn through the joint by capillary action. See similar questions...

What is the nature of the brazing process?

Brazing & Soldering Products | Sil-Fos
We can define brazing as the joining of metals through the use of a heat and a filler metal. In this process the melting temperature of the brazing filler metal is above 840° F (450° C), but in all cases below the melting point of the metals being joined. The brazing process consists of the broad heating of the base metals to the point where the filler metal, applied to the joint area, will be melted and drawn by capillary action through the entire joint. See similar questions...

What is fillet brazing?

FAQ - Roberts Cycles
This is a construction method where the tubes are held together by layers of melted brass that have been built up over the joint between the tubes (as well as being drawn into the joint). Once this is finished, the joints are carefully filed to create a smooth, curvaceous joint. See similar questions...

Why is soldering your flashing metal so important?

FAQ - DEVORE Roofing
If your roof contractor says they use caulk or some other sealant to keep your flashing metal from leaking you are making a serious mistake if you use their services. Caulk is just a temporary seal and your flashing work will eventually start leaking. If you solder your wall, chimney, skylight and certain valley flashing metal in the proper places the seal becomes permanent. See similar questions...

What alloy is recommended for brazing copper to copper joints?

Brazing & Soldering Products | Sil-Fos
In most cases, when brazing copper to copper in air conditioning and refrigeration service, one of our Sil Fos alloys would be recommended. The phosphorous in the alloys allow the Sil Fos group to be self fluxing when brazing copper to copper which eliminates the use of a separate flux. See similar questions...

What is brazing and how is it different from welding?

FAQ - Roberts Cycles
Rather than heating the tube ends up so much that they melt, which allows a weld to be created, a lower temperature is used. At around 800°, a material known as braze is introduced at the joint and this melts into the gaps between the finely mitred tubes and the lug. When it cools, the braze is what holds everything together. A version of braze known as silver solder only requires heating to about 600-650°, which means the tubes are weakened less by exposure to heat. See similar questions...

Do you crimp the ends or soldering them and why?

Custom Battery Cables FAQs
Ends are crimped only. Cables are crimped using a professional bench mount crimper. It squeezes the cable so tightly that there are no air gaps or spaces (I've seen the pictures of cross sections). Soldering is tough on the insulation and the solder wicks up the wire destroying the flexibility. The manufacturer of the ends recommends crimping. Soldering also requires flux, hazardous lead solder and solvents (for cleaning the flux). The extra cleaning step adds cost. See similar questions...

Do I need to protect a Speedfit System when soldering?

John Guest - The World Leader in Push-in Fittings, Pipe and ...
Yes, keep flame or soldering tools away from Speedfit Products and do not allow flux or flux runs to come into contact with Speedfit Fittings. 450mm is the minimum distance to make a solder connection on copper pipe inserted into a Speedfit Fitting. See similar questions...

What are your capabilities on lead-free soldering?

The following machines , equipments and tools have been introduced to carry out the lead-free production, The lead-free project has been underway since 2003, We've assigned engineers and technicians to attend various trainings, lectures and seminars on lead-free technology. See similar questions...

How will you do selective wave soldering?

Compare specifications of wave soldering machines adopted by renowned companies to confirm the requirements the machine could meet. Perform experiments -- wave solder PCB sample and record the temperature profile. Send the temperature profile to experts in Senju (lead-free material vendor in Japan) to confirm its suitability for lead-free soldering. See similar questions...

Are soldering skills essential?

Frequently Asked Questions: DJH Model Loco - gifts for locom...
All whitemetal and many of the brass components in DJH kits can be assembled using epoxy or cyano adhesives but a measure of soldering is unavoidable when you come to building the working chassis (we can assemble 00 valve gear -excluding K40- for you at an extra charge of ?10 per kit, plus postage). Simple soldering is not, however, a difficult skill to acquire. See similar questions...

Is this joint suitable for induction brazing?

Frequently Asked Questions About Induction Heating
STEVE: "Our team of metallurgical and mechanical engineers will be glad to have a look at your parts and process and give you our best advice - no obligation! MORE See similar questions...

Q.11. What do we understand by a brazing paste?

Brazing Faq's,Frequently Asked Questions on Brazing,Question...
Ans. When we talk of a brazing paste, we mean a material consisting of metal alloy in a powder form well mixed with a binder. Flux is added to this paste whenever required to provide protection from oxidization. See similar questions...

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