| |
Back
Joint Design | Up
Steelworker Volume 01 - Building manual for how to work with steel | Next
Work Support |
Figure 6-14.—Joints designed to produce good brazing results.
Figure 6-15.—Some well-designed joints that have been prepared for brazing, and some poorly designed joints shown for comparison
Figure 6-14 shows some variations of butt and lap
joints designed to produce good brazing results. A com-
parison of good and bad designed joints is shown in
figure 6-15.
BRAZING PROCEDURES
The procedure for brazing is very similar to braze
and oxyacetylene welding. The metal needs to be
cleaned by either mechanical, chemical, or a combina-
tion of both methods to ensure good bonding. The two
pieces must befitted properly and supported to prevent
voids in the joint or accidental movement during brazing
and cooling operations.
Surface Preparation
The surfaces of the metal must be cleaned for cap-
illary action to take place. When necessary, chemically
clean the surface by dipping it in acid. Remove the acid
by washing the surface with warm water. For mechani-
cal cleaning, you can use steel wool, a file, or abrasive
paper. Do not use an emery wheel or emery cloth,
6-10
|
