To the classical common sense that heterogeneous metal solders

Great majority solders method can use at heterogeneous metal solder, but choosing solder when method and protocol technology measure, still should ponder over the characteristic when heterogeneous metal solders. Basis mother capable person and solder the request with different connect, fusion welding, press solder to reach other solder method solders in heterogeneous metal in use somewhat, but also have its actor drawback each.

1. fusion welding

Heterogeneous metal solders in use more is fusion welding method, commonly used fusion welding method has the welding rod arc welding, solder that bury arc, gas to safeguard solder of arc welding, electroslag welding, plasma arc, electron beam solder, laser beam welding to wait. To reduce dilute, lower penetration ratio or hold accuse different the fused quantity of metallic mother capable person, can choose solder of the electron beam solder with higher density of heat source energy, laser beam welding, plasma arc to wait for method commonly.

To reduce frit deep, can adopt indirect electric arc, sway welding wire, banding electrode, add not the technical measure such as electrify welding wire. But anyhow, needing only is fusion welding, frit joins welding line and always partial mother capable person brings about dilute, additional, still can form for instance the compound between the metal, in all crystal. To reduce this kind of adverse effect, be necessary to hold accuse and shorten the retention period that the metal finishs in liquid state or high temperature solid state.

But, although fusion welding method is mixed,perfect, still handle the question when all and heterogeneous metal solders hard however, because the metal is phyletic various, the function requests varied, contact form each are not identical, still need to choose below a lot of circumstances press solder or solder otherly method comes to those who handle specific heterogeneous metal joint to solder doubt.

2. presses solder

The most method that press solder will be heated to come by solder metal only plasticity state or do not heat even, and with bringing to bear on sure pressure is main feature. As comparative as fusion welding, soldering solder is pressed to have sure advantage when heterogeneous metal joint, need contact form to allow only, solder quality can satisfy a request again, choose pressing solder often is contrast chooses reasonably.

When pressing solder, appearance of heterogeneous metal border on can fuse, also can not fuse, but because have the effect of pressure, although appearance has fused metal to exist, also can be kneaded to hold and eduction (be like light solder and conflict solder) , fused once upon a time metal still was withheld after solder should be being pressed below a few circumstances only (like spot welding) .

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