I was taught that soldering,as it relates to piping, is the heating of the base metal to a point to where the filler metal will melt and fill the gap between the two pieces of metal being soldered. The base metal is NOT melted, only the filler metal. Soldering is usually used to join non-ferrous metals. Welding is when the base metal is heated to a point where it will melt and , with the filler metal, becomes part of the weldment. In other words, the two pieces become one, and the resulting weld is now a blend of base metal and filler metal.
soldering is a very low heat (melting temperature of the soldering alloy is less than 840 degrees Fahrenheit), semi-adhesion process, final product: 2 base materials, and a filler material on top. welding is high heat fusion process, final product: a solid blended material
Chat with our AI personalities
The techniques for soft and hard soldering are the same. The difference is in the type of solder used. Soft solder would have a lower melting point and therefore would require less heat. This is usually used for things that can be damaged by excessive heating.
Soldering and brazing are adhesive processes, welding is a fusion process. Soldering and brazing are best described as really good glue, but can be broken to get the original 2 pieces of metal. Welding make the 2 pieces, 1 piece; under a microscope, there is one metal. Also soldering and brazing steel are done at 300/800 degrees. Welding is around 3800 degrees.
The difference between welding and fabrication is that welding is a specific method of making something by using heat to join the pieces together. Fabrication is the construction of something and does not necessarily use heat.
in welding, the two parts of the materials are joined together by melting the base metal and then adding the filler material into it.
whereas in brazing the base metal is not melted.
also brazing is done at a low temprature as compared to welding because in brazing the base metal gets melted at about 800C whereas in welding we apply a great temprature as compared to brazing.
welding can be done more precisely on the material, materials are joined more powerfully with welding as compared to the brazing.
+++
Muddled!
Welding melts and fuses two parts made in a single parent metal, with or without adding extra metal from a "filler rod".
Soldering joins the parent metal(s) with a second (or third) metal, the solder, which bonds to the materials being joined.
Solder may be low-temperature alloy based on lead and tin (though in some countries now,, lead solders are being made legally obsolete), or at much higher temperatures using a silver-bronze (silver-soldering) or a brass (brazing).
Welding is joining two pieces of the same type metal, usually steel or an alloy of steel with a rod of similar type metal. This can be done with gas, an arc welder or a wire feed welder. Welding is done on Ferrous or Iron based metal. Soldering is for Non Ferrous or copper based things, copper and brass. Soldering uses a different metal with a low melting point to join the two items. Solder comes in different mixes for different uses. Some are just lead, some have Tin, some Silver. Brazing is used on Iron or Steel and uses a copper based rod that is melted to join the two items. It is done with a torch using a flammable gas and oxygen.
This isn't a very in-depth explanation, but it seems like the primary difference is that welding is the act of welding, forming two pieces of melting together, whereas weld-ability is the ability for metal to be welded (thanks, Webster, I know).
Weld-ability involves the potential for weld defects, metal treatment (pre- and post-heating, etc), and process factors.
what is the difference between ultrasonic welding & radiographic welding
back hand welding is when you pull the welding rod or whatever it is that you are using and forehand is when you push it ahead
"Automotive" means that such a person is specialized in cars.
SAW welding is a type of arc welding while ERW welding is spot or seam welding. SAW stand for submerged arc welding while ERW stands for electric resistance welding.
EFW: Electric Fusion Welding is a more general term which includes Electric resistance welding (ERW) and other types of welding such as Arc welding.