Set the heat-processing is the production of the more difficult parts, heat-leaking water and often sets the welding of the pipe.  Its materials are brass, steel pipes, tubes, and so on. Aluminum plate and heat-welded pipe used oxygen arc welding, steel-pipe and steel row of the use of welding Dianqi Han, the two sets of the welding, welding generally higher intensity, there will be no leakage phenomenon.  The copper-and exclusive control of the welding, drilling Xu Guangjian not welding, but must be allocated after the first hole mouth, can be welded, as shown in Figure 1. Figure 1 (a) is unallocated I welding, Figure 1 (b) is allocated mouth welding.  I for the purpose is to improve the strength and quality of welding to ensure that the board did not leak water absorbs heat.  Zi Tongguan between welding or brazing must be used with silver solder.  If the soldering is relatively low intensity, can not withstand the bumps, high incidence of water leakage phenomenon.  Another row of the insertion of the set, should be extended 1'-"" "2 mm, this can improve the strength of welding.

 Figure 1 welding two sets of law

 Set the call I can be bored see Figure 2 and Figure 3 shows the design production.
 Figure 2 is the set of drilling tooling (to ensure processing of the size and accuracy of the fixture), it can ensure that each set of Kongju consistency.。 Figure 3 is set for the mouth tooling, in order to ensure the allocation of the mouth of quality.

 Figure 2

 1,5 an angle; drilling a 2-, 3 fixed screws; tooling on a plate; six fixtures; a set of seven

 Figure 3