Sherman digitig 201 M-pro

IGBT TECHNOLOGY

Modern technology based on bipolar transistors with an insulated gate. It combines the ease of control of field effect transistors with the high breakdown voltage and switching speed of bipolar transistors. The use of IGBTs significantly extends the reliable operation of welding equipment.

LEVEL OF SECURITY

IP defines the degree to which the device is resistant to the penetration of solid and water contaminants. IP23 means that the device is suitable for indoor use and is not suitable for use in the rain.

MMA

A method that uses a coated electrode, consisting of a metal core covered with a sheath. The welder feeds the electrode as it melts into the workpiece so as to maintain a constant arc length. The device enables welding with all types of electrodes, e.g. basic, cellulose, rutile or acidic.

ARC FORCE

The arc stabilizing function by maintaining the value of the welding arc voltage regardless of its length and facilitating the control of the amount of spatter.

HOT START

When the arc is struck, the welding current is temporarily increased in order to heat the material and the electrode at the point of contact and to properly shape the penetration and weld face in the initial phase of welding

VRD

The VRD function lowers the no-load voltage. The correct voltage value is only restored just before the arc is struck. This minimizes the risk of electric shock, but in some cases it may make it difficult to strike the arc.

TIG AC/DC

Enables TIG welding with alternating current. It is required for welding aluminum and its alloys.

HF

Welding with a tungsten electrode in a protective gas shield with a pilot arc (non-contact)

WORK CYCLE

The duty cycle is based on a 10-minute period. A duty cycle of 60% means that after 6 minutes of operation (when welding non-stop on 100% power 200A), a 4-minute break is required . 100% duty cycle means that the device can work continuously without interruption.

POSITIVE CURRENT

The current responsible for maintaining the welding process, the lower value of the current pulse. It makes it easier to control the amount of heat introduced into the material.

START CURRENT

Current appearing in the circuit after pressing the button in the handle of the handle. The higher the starting current, the easier it is to strike the arc.

GAS PRE-FLOW TIME

The time from pressing the button in the handle of the torch to the moment of arc ignition. Normally it should be longer than 0.5 s to deliver the shielding gas to the torch nozzle outlet. to cover the welding start point and the tungsten electrode.

The pre-flow time should be longer in the case of a longer cylinder gas line.

GAS POST FLOW TIME

Time from arc extinction to gas valve closing. to shield the solidifying weld pool from the air and to cool the tungsten electrode.

Too short post-flow time may result in oxidation of the weld.

DOWNDOWN TIME

The time for the welding current to fall from the set value to zero or the value of the crater current.

RISE TIME

Welding current rise time from the initial current to the set welding current value.

PULSE WIDTH

The duration of the pulse allows you to adjust the penetration depth. Increasing the width increases the depth of penetration, reducing the amount of heat introduced into the material, reducing the risk of burning through thinner sheets or smaller components.

PULSE FREQUENCY

The frequency at which the current pulse value changes between the welding current and the base current.

AC FREQUENCY

This function is useful when welding aluminum. The higher the frequency, the better the quality of the weld and the better the focus of the arc.

AC CURRENT BALANCE

The ratio of the duration of the positive phase of the current to the negative one. Reducing the balance introduces more heat into the material, resulting in a narrower weld and deeper penetration, while reducing the heat load on the tungsten electrode.

Increasing the balance introduces less heat into the material, resulting in better cleaning, a wider weld and shallower fusion, but significantly stresses the tungsten electrode.

PULSE TIG

The function affects the shape of the weld and the focus of the arc. Pulse welding also allows you to reduce the amount of heat supplied to the material and is used when welding thin materials.

CRATE CURRENT

Current used in some welding modes where the arc is not extinguished immediately after the downslope phase. Allows you to fill the crater at the end of the joint.

2T / 4T WORKING MODE

2T – pressing the button in the handle of the handle turns on the ionizer and ignites the arc. Welding is carried out with the button pressed.

4T – pressing the button in the handle of the handle will turn on the ionizer and ignite the arc, then release the button and weld with the button released. Pressing the button again will end welding.

WAVE SHAPE SELECTION

DIGITIG 201 M-PRO allows you to choose from the following AC waveforms:

• The rectangular shape of the alternating current wave allows aluminum to be welded with the addition of magnesium,
• The triangular waveform of the current is optimal for welding thin components, including anodized aluminum,
• The sinusoidal waveform is recommended for welding pure aluminum.
• Trapezoidal wave a softer arc with a liquid pool and good material wetting. Better arc control than sine wave.

COLD WELDING

Cold welding – this is a variant of TIG spot welding that allows joining thin elements, thanks to very low heat emission in the joining zone. It consists in cyclic short-term ignition and extinction of the arc.

Welding takes place in continuous mode, pressing the button in the handle of the handle will start cyclic ignition and extinguishing the arc, releasing the button will end welding.

EASY TO USE, CLEAR CONTROL PANEL:

The easy-to-use control panel enables precise and smooth adjustment of parameters. The digital display shows the actual welding current.

STRONG AND SOLID CONSTRUCTION

The housing of the device is made of light and durable composites, resistant to all kinds of mechanical damage.

COOLING

The device has a fan cooling system, which significantly increases its efficiency.