Brazing
You probably meant pickled steel. Pickled steel is steel that has been washed in acid to remove surface corrosion before enter the next processing step in a factory (e.g. forging. stamping, rolling). The process of washing the steel in acid is called pickling. Once pickled the steel is rinsed in water to remove excess acid.
Steel wool works really well.
Brazing titanium pipe to stainless steel pipe can be challenging due to the significant difference in their melting points. It is recommended to use a brazing filler metal with a low melting point or a specially formulated brazing alloy designed for joining dissimilar metals. Additionally, thorough surface preparation, such as cleaning the joint surfaces and applying a flux, is essential to ensure a successful bond. It is advised to consult with a metallurgical expert or a professional welder for guidance specific to your application.
The compound, magnesium fluoride, is used in the process of brazing. It helps to smooth out the air particles by using this chemical compound to get rid of the pollutants, which helps with preventing oxide formation.
You should use solder, not brazing. Brazing is used to join iron or steel products together.
Flux can be applied using brazing rods. Bronze and Steel weldings can also be applied using brazing rods. You can also apply iron and other types of metal.
Certainly, it is frequently done with silver, brass, and bronze brazing alloys. Brazing steel tubes used to be the predominate method of manufacturing bicycle frames, and some high-end ones are still made that way.
The solid bench like piece of equipment that has robust sides is a brazing hearth. The sides act as heat shields and the hearth has a compressor. It is used to join steel together.
When Brazing copper to copper flux is normally not needed When brazing steel or copper based alloys then the flux is used to help the wetting action (Better flow of the brazing alloy) and to prevent oxidation A typical rod would be Union Carbide 25 M or check out the AWS booklet
Welding, Brazing ,threading with Teflon tape (unless it is gas)
Brazing for hobbies
brazing clints head
For steel tube joining various methods are involved welding , adding a small bit of pipe slightly larger than two pies all having threads insert both pipes into the small bit pipe applying shellac varnish or araldite makes bonding. Another method is brazing and silver brazing
Brazing is also known as soldering or soft soldering in the layman vernacular.
You usually do not braze copper, you solder it. If you were to use brazing rod on copper, the copper would have very close to the same melting point as the brazing rod. This makes it difficult to do. As far as preheating the copper, it needs to be hot enough for the brazing to flow.
Brazing