Product category:
Welding ancilliaries
News Release from: Witt Gas Techniques | Subject: Portable gas mixer BM-2M
Edited by the Manufacturingtalk Editorial
Team on 19 December 2005
Portable gas mixer economises welding
Most fabricators with welding equipment do not have a central mixed gas supply but a portable gas mixer adjusts various gas mixtures at the point at which welding is being carried out.
Most fabricators with welding equipment do not have a central mixed gas supply and if they do it is not always available at locations where it is required within the production area Witt Gas Techniques , the Warrington, Cheshire based gas safety, control, analyser and mixing equipment supplier, manufacture a portable gas mixer BM-2M that can, from two cylinders of single gases, adjust the mixture of argon/CO2 or argon/helium as well as other gas mixtures if required, to suit individual needs for on the spot welding
This article was originally published on Manufacturingtalk on 21 Aug 2001 at 8.00am (UK)
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From one central point, a modular energy compact system provides services such as Acetylene, Oxygen, CO2, Argon, shielding gas as well as compressed and fresh air, vacuum and electricity.
The use of pre-mixed gas cylinders is expensive and depending on the welding requirements, the need for a number of different gas mixtures can be a necessity.
This mixer allows the operator to mix his/her own gases with a mixing accuracy of better than +/-1% absolute.
The gas inlet pressures range between 4,5 and 230 bar and the gas outlet pressure is 3 bar maximum.
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The mixer is fitted between two gas cylinders, whether they be CO2 and argon or other gases.
It is easily installed using standard cylinder connections for the inlets and G 1/4 DIN 8542 for the outlet.
No special hoses are required.
Once fitted the operator sets the required mixture of Argon and CO2 in proportions of 0-25% CO2 and the balance of argon.
When the gas cylinder valves are opened the mixer operates automatically, no additional pressure regulators are required as it is fitted with an integrated pressure control mechanism and safety valves.
Flow of the required gas mixture is controlled by a metering valve.
The mixer is operated using just two knobs, one adjusts the percentage of CO2 in Argon and the other is used to adjust the gas mixture flow between 8-25 litres per minute.
Carl Long, general manager at Witt Gas said: "This mixer is inexpensive and simple to operate.
It saves on storing large quantities of mixed gases and is independent from pressure and flow fluctuations found on centralised systems.
We have a customer overseas, who has thirty of these mixers in operation to mix argon and CO2 for various welding processes.
Their plant covers a large area and previously they often found they had no access to the central gas supply system.
Now they use two-cylinder trolleys and have found that they can weld anywhere in their plant.
They also frequently have to change the argon/CO2 mixture and these mixers have saved them from holding large stocks of different mixture cylinders resulting in considerable savings in their gas consumption costs.
Now they only purchase two types of gas, which is simpler and also because they purchase larger quantities of single products, are offered better prices.
They are able to obtain the required gas mixture composition at any one point using only two cylinders of gas, when they want it." Witt Gas Techniques is a 9001:200 and ISO 14001 certified Company.
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