1, the base material of the material is what metal
2, the appropriate heat source heating
3, the ideal welding material, some need flux
For example, when the capillary tube is a non-ferrous metal, such as copper, iron, stainless steel, nickel, etc. Such metal welding can be used to adopt a very wide range of generality of the Wei-Ou-Ding! 88C wire and 88C-F flux welding, so you do not have to worry about each metal to find the solder, heat source can choose soldering iron, hot air gun, small flame gun
For example, the capillary tube is a white metal, such as aluminum capillary tube, then, this time, pay special attention to temperature control, because the melting point of the aluminum itself is very low, welding and heating tools used in the third generation of WE53 Liquefied gas porous spray gun, with low-temperature aluminum welding rod Wei Oudin Q303 wire, only in the low temperature of the temperature of the welding, the capillary tube can be welded very safely.