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tokentools-welding-supplies · 6 years

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10 steps to follow when buying a TIG welder

Latest update on https://www.tokentools.com.au/10-steps-follow-buying-tig-welder/

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About to considering buying a new TIG welder? Before you part with your hard earned, there are important and key points to know first.

Transformer or Inverter

Until 2005 transformer machines were very common in the new machine market and due to their limitations in control and weight have been replaced by modern inverter welder products. Transformer machines would step down the primary input, either 240V single phase or 415V 2 / 3 phase to a lower voltage welding current and then step the output in an attempt to create a square wave output. The devices used for creating the stepped output were triacs. Generally pulse weld output and frequency control were not achievable in affordable units so the control panels are relatively simple. Your budget will address this one as transformer machines are mostly found in the second hand resale market.

Inverter machines despite their complex build are relatively simple in design. The incoming supply is rectified into DC. The DC current is inverted to AC by way of a full or half bridge inverter circuit at high frequency and then the AC is stepped down via a transformer. The output of the transformer is rectified into DC and this current is used in straight or alternating reverse polarity by a second stage transistor array. What are the benefits of an inverter machine? Read on.

Precise arc control with an inverter tig welder

2. What are the benefits of an inverter welder?

Due to the high frequency used to create the inverted AC wave in the step down transformer, magnetic flux is reduced and as a result the transformer shrinks in size and weight. When comparing a 50 Hz 200 amp transformer from an old transformer machine to a 100Khz 200 amp transformer from an inverter machine the difference can be 80:1, that is 80 kilograms to 1 kilogram. This is all to do with the operating frequency of the step down transformer.

So weight is the first key benefit, next is control. Modern inverter machines control the inversion of the AC before the step down transformer so they can also pulse the current. This type of product is called a pulse welder.

3. Do I need a pulse Tig welder?

Pulse welder mode is a beneficial feature that can assist the operator in lowering the overall weld current by pulsing it. When a pulse completes there is a period of time when the base current is introduced and it is lower, generally by 30%, than that of the pulse. This pulse base cycle allows the material to melt and solidify and achieve a level of melt that prevent excess or runaway heat so is an ideal process for thin walled material, and whilst we are on the subject of material….

4. What material can be welded with a TIG?

A TIG machine can weld any material. Think of the TIG as an electron beam heat pump with electrons flowing from negative to positive electrodes. When you add heat to a metal and enclose it in an inert gas shield that metal will melt. All metals are TIG welded with a negative electrode except aluminium or it’s alloys which requires an alternating current. Aluminium is covered with an oxide layer that melts at 3 times it’s temperature so when using an AC waveform the oxide is removed from the surface when the TIG torch is charged positively and the aluminium work piece melts when the TIG torch is charged negatively. If you don’t plan to weld aluminium then a straight DC welding machine is suitable. If on the other hand you plan to weld all materials then your only option is to invest in an AC/DC TIG. Machines with ACDC wave forms are more expensive as they contain a second stage transistor array for switching the output current in either straight or reverse polarity.

Tig welding control with a single knob

5. How many controls are required to weld?

Only one control is required and that is amperage , the other controls just make things easier. For AC welding having a balance control is a must and a frequency control for the AC waveform is icing on the cake. Consider the type of welds you will be creating and there is no harm in getting a very complicated product. Just because a feature is there doesn’t mean it needs to be used but as you grow into a product and gain experience you will find more adjustment can be introduced to your welds by using these extra features.

6. Multi process or Multi Function or single function?

If you buy a multi function welding machine, you can do several things such as MIG and TIG or TIG weld and Plasma Cut. It is advantage to buy a multi function welder every time and here is why.

When it comes to inverter based machines they already have an inverter circuit creating welding power. This welding power is available in either constant voltage (CV) or constant current (CC). A CV machine like an inverter MIG can also be CC machine like a stick or TIG welder simply by switching what it is controlling, that is instead of being a MIG and controlling arc voltage, it starts to control arc current and works as a Stick welder. With plasma cutters it is the same process but they operate at a higher voltage around 100 volts DC under load so they have a second transformer winding and changeover relay to switch the plasma current from the step down transformer to the output. Our machines have a 5 year warranty regardless of whether they are single function or multi function welder products. The only time you would specifically stick to a single function product is when it is located in a fabrication shop and it is being used for one purpose most of the time, in such cases staff sharing the different functions is counter intuitive to productive work places just to save a few bucks.

Digital Tig Welder Control Panel

7. Do I need a digital panel or are analogue knobs ok?

Analogue panels are fine and have plenty of control. The Metalmaster analogue panel machines still have a digital control board with microprocessor control but employ analogue to digital converts which allow the operator to still experience old world charm on a modern machine.

If on the other hand you want every possible feature available then a digital panel allows for maximum features in the smallest space. Digital welders also have memory functions that allow the saving of preferred parameters and are ideal in fabrication shops where jobs can be stored and recalled at the press of a button.

8. How many amps will I need?

TIG welder penetration is all about amperage with a rough guide being 30 amps per mm of material thickness in aluminium and 25 amps per millimetre in steel. These figures are for full penetration into the material and don’t take into account weld joint type, ambient temperature or mass of material being welded. For a 200 amp machine you will easily weld 8mm plate from one side and if you want to go really thick you can pre heat with LPG or propane in order to raise the surrounding weld area by a few hundred degrees.

9. Duty Cycles, what are they and do they matter?

A duty cycle is the rating the manufacturer gives a welding machine so that the operator has a clear idea of how useful the machine is for welding at high amps or for prolonged periods. The duty cycle of an inverter welder is given as a percentage of time in a 10 minute period that the machine can output the set current at an ambient air temperature of 40 degrees celsius.

For example there are cheap 200 amp welders that quote a duty cycle of 20% at 180 amps, this would indicate very poor performance at 200 amps. To the contrary, Metalmaster ACDC TIG welder products have a rated duty cycle of 60% at 200 Amps making them ideal for dependable use for prolonged periods of time.

10. What to expect with a long welder warranty.

Warranty on welding machinery varies between manufacturers with most being between 1 and 3 years. It is critical to read the fine print of any warranty as some only warrant control boards for 1 year whilst covering a transformer (which will never fail) for 3 years. All Metalmaster welding machines come with a 5 year warranty for parts and labour giving the original owner many years of peace of mind.

You can further read about our range of DC Tig welders here or see our AC/DC Tig range here.

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tokentools-welding-supplies · 7 years

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Inverter Welder ARC TIG Miniarc 200ST

Latest update on https://www.tokentools.com.au/inverter-welder-arc-tig-miniarc-200st/

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Demand for inverter welding machines and the competition in this segment of the market has never been greater and the consumer has the advantage with manufacturers bundling features in order to carve out their niche. To succeed in this segment we have launched our latest inverter welder development, the Metalmaster Miniarc 200ST aimed at the commercial segment with features that will impress and a price that will give you change from $400 and a 5 year warranty.

The Metalmaster Miniarc 200ST inverter welder features 3 modes of operation. MMA stick welding with VRD protection that can be deactivated to provide MMA Stick welding with an open circuit voltage of 70V DC. TIG welding is available using a tru lift arc start so even then stainless sheet or tube can be welded with ease. VRD mode output voltage is 15V DC and can significantly reduce the risk of injury when welding in hazardous locations.

Portable Inverter Welding Machine with VRD Arc Welding and LIFT TIG modes Metalmaster Miniarc 200ST

The very portable Miniarc 200ST is compact enough to be carried by hand or over the shoulder as it has both carry handle and strap fitted, the strap may be removed by releasing the push button buckle. The welder weighs in at 6.3KG and whilst not the lightest in this market segment, it is not flimsy with a full 200Amp duty cycle achieved at 30%, 142Amps at 60% and 110Amps at 100%.

Metalmaster Miniarc 200ST inverter welder front including large style 35-50 dinse sockets

The Metalmaster Miniarc 200ST has industry standard 35-50 dinse sockets on the front panel and ships with 25mm copper work cables shrouded in orange PVC. A plastic carry case is included to keep your kit together and job ready. The mma electrode holder is a twist lock type rated to 400 amps and can easily hold electrodes to the maximum welding capacity of the welder. The job clamp is rated to 300 amps and has an copper equipotential bonding strap that links both jaws together enabling the current to flow to the jaws without burning out the spring loaded hinge pin.

The main control panel is very easy to navigate and contains all settings in an intuitive format. The multi function digital display shows selected amperage, power status and overheat modes if duty cycle is exceeded. Welding modes are easily selected being either MMA VRD, MMA or LIFT TIG. Amperage is digitally controlled via an analogue to digital converter so is accurate.

Metalmaster miniarc 200st inverter welder control panel

For more information the product may be viewed on the national welding supplies page or directly at this link. The instruction manual for the Metalmaster Miniarc 200ST may be downloaded here

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tokentools-welding-supplies · 7 years

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welding machines

Latest update on https://www.tokentools.com.au/welding-machines/

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Mig, Tig and Multi Purpose Welding Machines

AC DC Welding Machines

At tokentools.com.au, we pride ourselves on carrying a large range of welding machines with convenient access to information and sales via the web, we aim to service the entire Australian welding industry.

We have selected a range of MIG, TIG, MMA and Multi Purpose inverter-based welding machines ensuring we have a machine for any welding application.

Whether you’re a handyman requiring a reliable machine for DIY jobs around the home, a car enthusiast or mechanic, or a general engineer or industrial level welder – we’ve got something for you. If you can’t find the machine you want simply contact us and we’ll find the machine you need.

All of our Metalmaster welders are backed by a 60 month warranty and are sourced from leading manufacturers, allowing you to buy with absolute confidence.

Are you looking for a good quality versatile welding machine but do not have time to go to a hardware store and purchase one? Or is it, that the machine you are seeking is not available in ready stock? Are you also looking for a vendor who provides efficient after sale services without any surprises? Then, log on to Tokentools Australia and all your troubles will be taken care of.

We are leaders amongst online sellers of welding machines and cater to customers across Australian cities, suburbs and rural areas. Unlike other stores, we are specialists, and only deal in welding machines and related equipments and accessories. Visit our website and choose from a variety of products such as MIG Welders etc. We are experts in the field and sell only high quality products. Each and every product we offer is designed to delight and serve our customers.

Here are some of the many reasons to choose us to be your equipment supplier?

You may want to choose us because, we:

Provide a selection of welding machines to choose from.

Are Australian based and offer many types of multipurpose welders under one roof.

Deal only with reputable suppliers suppliers who have fully developed infrastructure like service centres, availability of spare parts, etc for all products including TIG Welders.

Provide a massive 60 months warranty on every machine purchased through us.

Provide a dedicated sales and support team to assist our customers with all dealings. Our experts will give you all the professional advice you need and help you in purchasing the right product too.

Employ technicians with experience who are available to serve you and answer any of your queries. We also offer information through other sources like blogs, customer reviews, feedback etc. which you won’t get in any hardware store.

Sell products at very reasonable prices, which are discounted and some of the the lowest priced in the market.

Focus only on providing the highest level of service and selling welding machines of the highest quality and trusted brands.

Provide efficient and fast order processing services. We ensure that your product reaches your doorstep at the earliest, regardless of volume, size or weight.

Use fast means of transportation via reputable carriers which ensures your product is delivered to you in the fastest way.

Have an interactive and secured web platform with product information, manuals, images, videos etc. Log on to our website and see for yourself, you’ll immediately have access to all the information you need about the machine. The information available via our online store is 100% authentic and can be relied upon.

Have a website with EV SSL certification and have a secure payment gateway for payment through Paypal, credit and debit cards,purchase order, in store pickup, money order and EFT.

We are all about Welding Machines

Our massive range of welding machines from a variety of Australian multi purpose welders. We supply welding machines that are very versatile and may be used in different applications within industry. These are handy and do not require too much ongoing maintenance. Our website also has inverter based MIG welders which are in a class of their own, and work on 15 Amp power sources; it makes these machines portable and handy. They are lightweight and ideal for use in home workshops, rural workshops etc.

You’ll also find a huge range of welding accessories, consumables and other equipment on our website. For any sort of assistance call us directly, Tokentools Australia on 1300 881 991 and one of our expert support staff will help you. You may also send us your queries or feedback via email. Contact us to to have that new buyer experience. We are always dedicated to serving our clients in every manner possible and ensure that they choose an appropriate product for their needs.

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