1

Brass welding operation steps:

1.Prepare welding gas, equipment and materials;
2.Wear protective equipment;
3.Check the status of welding equipment, tools;
4.Open the bottle valve, adjust the oxygen pressure regulator to control the outlet pressure of 0.15 ~ 0.2MPa, adjust the acetylene pressure reducer control outlet pressure of 0.01 ~ 0.02MPa;
5.Open the acetylene control valve - ignition - adjust the acetylene control valve, so that the flame length is moderate;
6.Open the oxygen control valve - slow to make the flame into a neutral flame;
7.According to the neutral flame (small) - plus acetylene - feathery flame larger one plus oxygen to a neutral flame (large) in order to adjust the flame;
8.According to the neutral flame (large) - reduce the oxygen - the emergence of pinnacle flames a decrease in the order of acetylene as a neutral flame (small)
9.So that the tip of the flame from the welding pieces 2 ~ 4mm, perpendicular to the pipe, the entire length of the weld evenly heated to dumb red;
10.Coated with flux, the flux into a transparent liquid and even infiltration of the weld, the flux of solder will be fed into the heating until the solder is fully melted and filled with welds;
11.Remove the flame, before the solder is completely solidified, keep the welds not dislocated with each other;
12.Off the acetylene valve, and then off the oxygen valve flameout;
13.Handle loose valve, close the bottle valve;
14.Finishing tools, equipment, cleaning the scene.