The demand of modern industry always requires greater competence and production quality
The requests for improvement in the quality of the manufacture of pipes or containers have increased exponentially in recent years, particularly in the chemical-pharmaceutical, scientific and food sectors.
The welding torch provides inert gas coverage of the top of the melting area, but unless precautions are taken there is no coverage of the welding root. The use of inert gases or mixtures of reducing gases allows to obtain a clean and shiny cord, even on the opposite side to the electric arc, ensuring cleanliness and avoiding the casting bath melting.
Metal reactivity
Every single material requires a
specific root protection gas.
Carbon steel, stainless steel, Duplex and Superduplex,
aluminium, and many other gases have different
metallurgical characteristics and reactivity to air.
The choice of the inert gas or reducing mixture, must be
made by following the compatibility criterion of the
material to weld and critical aspects of the atmosphere
generated inside the tank - tube to weld.
There are on the market, devices and analysers allowing
a correct and safe use of the reducing gas, thus avoiding
waste of gas or incorrect use, which voids the operating
result.
Potential production of the right onsite gas mixture.
Nippon Gases is able to meet the specific requests to generate onsite mixtures through the design and construction of specific gas mixers also, including remote control.
In these cases, safety equipment cases must be adequate to constantly assess the risk of triggers. Even the flushing equipment is essential for correct use and significant savings of the quantities of gas applied. In this application, it's fundamental to manage the flow, which must be laminar and not turbulent. To obtain this effect the gas flow must be low.