Conduit of natural gas of high pressure, superhigh pressure solders the technology develops a tendency
One, introductive
As the development of oil natural gas and petro-chemical industry, with be being enraged on the west east be defeated by a project to be a mark, the length of our country is defeated by conduit to build fastigium to had come. Pipeline of long gas transporting oil more and more carry direction to develop to force of large requirements, high pressure. Long be defeated by conduit to fall from 20 centuries to solder technology 60 time introduce our country since, through development of a few years, below the handiwork that already had maturity at present to solder technology, popularizing semi-automatic gas to protect solder technology. Full automatic technology of aeriform protection solder and next union to solder technology solder as high-pressured conduit development trend of the technology, will grow in the whole nation big thrust is wide in be defeated by conduit to build. Because be in " enrage on the west east be defeated " Shanghai Ⅰ - Ⅵ mark paragraph had succeeded in the project applied handiwork to fall to be reached to solder technology protect medical core welding wire oneself the welder of semi-automatic solder art, already had relatively perfect construction work standard, because of this article no longer give uncecessary details. And solder of protection of semi-automatic to STT technology gas and full automatic did not undertake the project is carried out in the conduit burning gas that gas protects solder to be in Shanghai area or solder experiment, because this article is opposite these two kinds to solder,craft undertakes specific discuss, carry on for Shanghai area the high pressure henceforth lights tracheal path project to offer a technology to consult.
2, protection of gas of STT technology CO2 is semi-automatic below to solder technology
STT CO2 semi-automatic solder is solder with STT the root solder that the technology undertakes conduit, what the protective gas of root solder uses is CO2. Use medical core welding wire (the NR207 that is like Lincoln) the solders by hand welder that undertakes sending silk automatically art. STT is " Surface Tension Transfer " English abbreviate, namely meaning of exterior tension exceeding, it is one kind solders frit apply metal transfers mechanism. (the fill of the semi-automatic solder that the solder of fill lid side that uses this kind of technology and my company use covers face technology duplicate, the article spreads out no longer, what what describe is main for technology of STT root solder. )
1 craft characteristic: The solder of the STT in soldering in pressure conduit is a kind cheap, efficient solder method. Solder of traditional CO2 gas protection cannot from go up at all solve solder splatter problem of unfavorable of figuration of big, welding line. And semi-automatic welder of the STT that uses undee control technology CO2, assured to solder the process is stable, welding line figuration is beautiful, impact of dry stretchy change is little, reduced significantly splatter, reduced solderer labor intensity.
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