Kaysun Amazon V, Инженерный справочник

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Amazon V
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Piping orientation during brazing
Brazing should be conducted downwards or horizontally to avoid filler leakage.
Figure 3-5.6: Piping orientation during brazing
Piping overlap during brazing
Table 3-5.3 specifies the minimum permissible piping overlap and the range of permissible gap sizes for brazed joints
on piping of different diameters. Refer also to Figure 3-5.7.
Figure 3-5.7: Piping overlap and gap for brazed joints
Legend
A Inner diameter of larger pipe
D Outer diameter of smaller pipe
B Inlaid depth (overlap)
Table 3-5.3: Piping overlap and gap for brazed joints 1
D(mm)
Minimum
permissible B (mm)
Permissible A–D
(mm)
5<D<8 6
0.05-0.21
8<D<12 7
12<D<16 8
0.05-0.27
16<D<25 10
25<D<35 12
0.05 - 0.35
35<D<45 14
Notes:
1. A, B, D refer to the dimensions shown in Figure 3-5.7.
Filler
▪ Use a copper/phosphorus brazing alloy (BCuP) filler that does not require flux.
▪ Do not use flux. Flux can cause corrosion of piping and can affect the performance of compressor oil.
▪ Do not use anti-oxidants when brazing. Residue can clog piping and damage components.