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In addition to the standard DC TIG function (suitable for steel and other non-ferrous metals), the Ramsond SUPER 250PY offers the unique feature of AC TIG-welding. Aluminum, copper and magnesium and their alloys are best welded using alternating current (AC). AC TIG should be utilized when welding aluminum due to its unique properties. Aluminum, when exposed to welding, forms an oxide layer on the surface (commonly called sapphire), which can contaminate the weld. This oxide layer must be removed for welding to occur. With AC welding function of Ramsond SUPER 250PY, the power source switches (alternates) the polarity of the arc between positive and negative. When the polarity of the arc is positive, current flows from the work surface towards the electrode, producing a cleaning effect that blasts the oxide (sapphire) away from the surface. When the arc switches back to negative, energy flows from the electrode to the work surface producing heat that melts the metal. By increasing or decreasing the duration of the positive or negative phase of the AC cycle, the cleaning and welding characteristics of the arc can be modified. AC TIG welding is a multi purpose process, which offers the user great flexibility. By changing the diameter of the tungsten electrode, welding may be performed with a wide range of heat input at different thicknesses.
A few TIG welders in the market, including the Ramsond SUPER250PY, have a "square wave" or "PULSE" control feature that allows the electrode negative (EN) portion of the AC cycle to be increased up to 90 percent.
By increasing the negative phase, the AC cycle provides greater heat penetration, faster welding and narrows the weld bead. It also allows the use of a smaller diameter tungsten electrode to more precisely direct the heat in a confined area.
Reducing the negative phase of the cycle produces greater cleaning action to remove heavier oxidation, and reduces heat penetration when welding thin castings. In the PULSE-current mode, the welding current rapidly alternates between two levels. The noise produced during this process is a noticeable pulsating/waving sound. The higher current state is known as the pulse current, while the lower current level is called the background current. During the period of PULSE current, the weld area is heated and fusion occurs. Upon dropping to the background current, the weld area is allowed to cool and solidify. PULSE current has a number of advantages, including lower heat input and consequently a reduction in distortion and warping in thin work pieces. In addition, it allows for greater control of the weld pool, and can increase weld penetration, welding speed, and quality. The RAMSOND SUPER250PY allows the operator to program a specific rate and magnitude of current and frequency variations, making it useful for specialized applications.
PULSE current is also most useful when welding dissimilar metals (e.g. welding steel to aluminum) . In case of dissimilar metals, the joint must have an accurate fit, with proper gap dimensions and bevel angles. Care should be taken to avoid melting excessive base material. PULSE current is particularly useful for these applications, as it helps limit the heat input.
Manufacturer's Suggested Retail Price: $2,450.00
RAMSOND SUPER 250PY offers a variety of settings and adjustments. Most of the adjustments and controls on the panel relate to its TIG function. TIG welding, beyond its practical applications, is indeed a form of art. Through experience and practice, each operator develops unique routines and preferences (both in technique and adjustment of the settings) for achieving the desired results. The Ramsond 250PY is equipped with a variety of such control functions and adjustable parameters to suit your welding/cutting preferences. With the proper setting and technique, SUPER 250PY is a precision welding tool that can achieve optimal and professional quality results.
Additionally, the Ramsond SUPER250PY features 2 new features that set it apart from its would-be competitors. The outdated models normally are equipped with a pressure gauge that is attached to the air filter located in the rear of the machine. Naturally, with these traditional units, the user must either flip the machine around or walk to the back the machine to view the pressure gauge and setting. Ramsond SUPER250PY has incorporated the air pressure gauge into the front panel of the unit , making it visible from virtually any angle. Additionally, this Ramsond model is equipped with a large digital display that conveniently displays the current setting of the unit.
The new SUPER 250PY is foot pedal ready. The foot pedal is included free of charge. The Ramsond foot pedal controller attaches to the 7-prong connection on the front panel of the unit. Simply leave the 7 prong connection of the torch disconnected and connect the foot pedal 7 prong connection and turn the foot pedal ON/OFF button on the front panel to the ON position. The foot pedal function provides further flexibility to the operator to control the output current (Amp) via the foot controller. The foot pedal is also equipped with the a current adjustment knob on its side. Using this current adjustment knob, the user can set the maximum output current. For example, if the maximum output current is set to 160 Amps (using the adjustment knob of the foot pedal), when the foot pedal is fully depressed, the maximum output current will not exceed 160 Amps. The foot pedal is equipped with a spring loaded retraction system. So lifting the pressure off the foot pedal will lower the output current and ultimately return the current to zero. The foot pedal can be used with all functions, however it is typically used with the TIG function.
Cut at 12 Times the Speed of Sound
Plasma cutting is a process that is used to cut steel and other metals using a plasma torch. In this process, an inert gas (compressed air) is blown at high speed out of a nozzle; at the same time an electrical arc is formed through that gas from the nozzle to the surface that is being cut, turning some of that gas to plasma. The plasma is sufficiently hot to melt the metal being cut and moves sufficiently fast to blow molten metal away from the cut. The plasma, which is maintained between the work-piece and electrode, travels at over 9000 MILES PER HOUR (15,000 km/Handle). That’s over twelve times the speed of sound.
Advantage of Plasma vs. Oxy-Fuel Torch
Plasma does not use expensive, hazardous gases, only compressed air. It imparts much less heat into the piece being cut, eliminating warping. It does not require ignition. It leaves little to no slag to clean up or grind off. The cost per cutting hour can be less than oxy-fuel since there is no gas cost. It is also much quicker and easier. So, you cut better, faster and inexpensively.
Skill and Training
Included with the RAMSOND SUPER 250PY is an Argon Regulator and Flowmeter combination which accommodates highly precise adjustment of gas flow for the TIG function of the unit. The use of flowmeter provides more accurate readings than regulator gauges, therefore, substantially reducing gas waste.
The included regulator is equipped with a STANDARD (CGA-580) connection suitable for use in US and Canada .
The SUPER PY inverter rectifies the input voltage (220V) into DC (Direct Current), which is then fed into a series of MOSFETs (Metal Oxide Semiconductor Field Effect Transistor). Ramsond SUPER PY series machines utilize the most advanced FUJI (for Super 250PY) or TOSHIBA (for Super 160PY) MOSFETs. These MOSFETs (transistors) are switched at thousands of Hertz, which greatly reduces the magnetic flux, and therefore the size of the transformer. In simple terms, MOSFETs allows for a compact and light weight machine such as the SUPER 250PY to operate at its performance parameters. The use of these MOSFETs makes it possible for SUPER 250PY to produce the necessary power, using very little space and creating minimal heat dissipation.
Each Ramsond SUPER 250PY comes complete with the following accessories:
A 1 year Limited Manufacturer's Warranty is furnished with this product. This limited warranty provides for both PARTS and LABOR at Ramsond's certified repair service center. Ramsond has a complete dedicated service center for its line of welding and plasma cutting products. This service center is equipped with state of the art technology which accommodates proper service and maintenance of these units.
We consistently maintain a large inventory of consumables (electrodes, tips, cups, shields, etc.) which are available to our customers. For sales, customer support or other inquiries please feel free to contact us during normal business hours at (248) 363-8302 or via email at sales@Ramsond.com..
SHIPPING & HANDLING
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