2007, about machine of air conditioning inside and outside join provides data " copper pipe is good, still be cupreous aluminium the canal is good " controversy by " infighting " development is become " bright contend for " . Call " infighting " it is to point to " cupreous aluminium is in charge of " going up early 80 time begin the century application, but did not make attention central point from beginning to end, its are main the reason is price of copper, aluminous raw material. Call " bright contend for " it is to point to in last few years, namely since 2004, suffer domestic and international all sorts of element influences, price of cupreous raw material rises considerably, was in 20 thousand yuan 2004 / ton reach 30 thousand yuan / ton between, 2005 30 thousand yuan / ton reach 40 thousand yuan / ton between, and 2006 45 thousand yuan already exceeded first / ton, in year highest more than 85 thousand yuan / ton, maintain now be in 60 thousand yuan / or so tons. The enterprise produces cost to reduce, enhance market competition ability, begin attention to use " cupreous aluminium is in charge of " replace copper pipe. Caused thereby " copper is contended for aluminously " , cupreous aluminium is in charge of is " black heart is in charge of " new still technology, view of enterprise, expert is differ.

Actually, "Cupreous aluminium is in charge of " the join tubing that applies at air conditioning not only, the condenser that also applies at freezer, air conditioning and evaporator (common says " two implement " ) . "Cupreous aluminium is in charge of " production method can be divided solder to solder and be not method, solder among them the method has friction welding, store solder of solder, can flashy solder, resistance welding, drill rod and ultrasonic solder etc, blame solder the method has Luo Kehuan, silk to buckle reach gooey plunge into pressure etc. The article with " cupreous aluminium is in charge of " solder the technology gives priority to the introduction " cupreous aluminium is in charge of " course of technical research and development, strive to make the reader can understand in the round " cupreous aluminium is in charge of " technology.

Foreign circumstance

1957, russia appeared before cupreous aluminium is in charge of glitter to be opposite solder technology, development goes welder of glitter of MCKH-150 copper aluminium, can solder the diameter is in charge of for the cupreous aluminium of 10mm-30mm [1] .

1972, russia appeared before cupreous aluminium provides the cold technology that press solder [2] .

1977, the ultrasonic high temperature that aluminium of American occurrence copper is in charge of solders technology, use " cupreous bag is aluminous " contact form, be about to mouth of enlarge of ministry of copper pipe end, when soldering, will aluminous canal is inserted, solder norms is 5.75mm of copper pipe diameter, 7.4mm, aluminium is in charge of diametical 6mm, 8mm[3] .
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