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Related Manuals for Linde BOC Smootharc MMA130VRD
Summary of Contents for Linde BOC Smootharc MMA130VRD
- Page 1 MMA 130/180 VRD Operating manual...
- Page 2 MMA 130/180 VRD Operating manual Welcome to a better way of welding Congratulations on purchasing a Smootharc MMA 130/180 VRD welding machine. The products in BOC’s manual metal arc range perform with reliability and have the backing of BOC’s national service network. This operating manual provides the basic knowledge required for MMA and DC TIG welding, as well as highlighting important areas of how to operate the Smootharc MMA 130/180 VRD welding machine.
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Page 3: Table Of Contents
MMA 130/180 VRD Operating manual Contents 1.0 Recommended safety guidelines 11.0 Manual metal arc welding process (MMAW) 20 11.1 Process 2.0 Recommended safety precautions 11.2 Welding machine 2.1 Health hazard information 11.3 Welding technique 2.2 Personal protection 11.4 Electrode selection 2.3 Cylinder Safety 11.5 Types of joints 2.4 Electrical shock... -
Page 4: Recommended Safety Guidelines
MMA 130/180 VRD Operating manual 1.0 Recommended safety guidelines This product is not intended for household or general use. This product is to be used exclusively for commercial or industrial purposes by qualified welders in a workplace where occupational health and safety legislation applies. Some safety precautions BOC recommends are as follows: →... -
Page 5: Recommended Safety Precautions
MMA 130/180 VRD Operating manual 2.0 Recommended safety precautions 2.1 Health hazard information → Fumes from the welding of some metals could have an adverse effect on your health. Don’t breathe The actual process of welding is one that can cause a them in. -
Page 6: Cylinder Safety
MMA 130/180 VRD Operating manual 2.3 Cylinder Safety Cylinder valve safety When working with cylinders or operating cylinder valves, ensure that you wear appropriate protective Cylinder valve hand-wheel clothing – gloves, boots and safety glasses. When moving cylinders, ensure that the valve is not Back-plug accidentally opened in transit. -
Page 7: Electrical Shock
MMA 130/180 VRD Operating manual Remember NEVER tamper with the valve. BOC stock a huge range of personal protective equipment. This combined with BOC’s extensive If you suspect the valve is damaged, DO NOT use it. Gas and Gear network ensures fast, reliable service Report the issue to BOC and arrange for the cylinder throughout the South Pacific. -
Page 8: Switch On To Electrical Safety
Switch on to electrical safety for single-phase equipment BOC welding machines are designed and manufactured to conform to IEC 60974 or AS 60974. This Standard not only covers the machine but also the input cable and plug requirements including the size of the plug that should be used. - Page 9 How important is the correct input cable and plug on a welding machine? The size of the plug depends on a formula ✓ Use the correct input current, that not only uses the maximum current draw ✓ cable and ✓ plug in accordance with but also the duty cycle of the power source.
- Page 10 DON‘T ✖ Don’t risk damage to your machine or cause tripping and/or fire by using the wrong input current, cable or plug. ✖ Don’t tamper with plugs or file down earth pins. Doing so will void warranty. Check the rating plate on your machine. Always All welding machines that comply with IEC 60974 or AS 60974 must have a rating plate similar to the one shown.
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Page 11: Technical Specifications
MMA 130/180 VRD Operating manual 3.0 Technical specifications Specifications MMA 130 VRD MMA 180 VRD Part No. BOCMMA130VRD BOCMMA180VRD Power voltage Single phase AC240 V ±15% Single phase AC240 V ±15% Frequency 50/60 Hz 50/60 Hz Maximum rated input current (I 22.1 A 20.3 A 38 A... -
Page 12: Mma Installation
MMA 130/180 VRD Operating manual 4.0 MMA Installation 4.1 Install the Output Cables There are two welding methods for MMA welding, please choose according to the actual electrode manufacturer recommendations. Direct Current Electrode Negative (DCEN) Direct Current Electrode Positive (DCEP) The positive output terminal is connected to the The positive output terminal is connected to the workpiece, and the negative output terminal is... -
Page 13: Installing Adjustable Shoulder Strap
MMA 130/180 VRD Operating manual 4.2 Installing Adjustable Shoulder Strap The images shown here are indicative only. If there is Figure 1 any inconsistency between the image and the actual product, the actual product shall govern. Fix the belt as figure 1 to 3. The length of the belt can be adjusted as needed. -
Page 14: Control Panel
MMA 130/180 VRD Operating manual 5.0 Control Panel 5.1 Control Panel Icon Name Description Adjusting Knob Used to adjust welding current. Power Indicator This indicator lights up when the machine is overheated, overcurrent, Abnormal Indicator or other abnormal condition. VRD Indicator When the VRD function is active the VRD indicator lights up. -
Page 15: Operation
MMA 130/180 VRD Operating manual 6.0 Operation 6.1 MMA Instructions Steps Description 1 Select electrode It is suggested to choose the diameter of electrode according to the thickness of the workpiece refer to the following table (Diameter of Electrode). 2 Starting up Turn on the power switch. -
Page 16: Environment
MMA 130/180 VRD Operating manual 7.0 Environment Note: The power source should not be used in rain or The equipment should be shielded from heat, fire snow environment. and welding spatter. The ambient temperature requirements are as follows: The recommended external environment for welding →... -
Page 17: Troubleshooting
MMA 130/180 VRD Operating manual 8.0 Troubleshooting Polarity, fitment of cables, condition of connections, condition of materials being welded, environment, input power supply may all influence the welding process. No. Problems Solution Arc starting is difficult Check the condition of the electrodes. If the electrode is not dry, it will cause and the arc is unstable arc, cracking, and porosity in the weld. -
Page 18: Periodic Maintenance
MMA 130/180 VRD Operating manual 9.0 Periodic Maintenance It is recommended that the unit be serviced in accordance with the requirements of IEC 60974-4. → Check electrical connections before every use. Repair or replace broken/damaged cables. → Clean oxidised connections and tighten. →... -
Page 19: Warranty Information
MMA 130/180 VRD Operating manual 10.0 Warranty information 10.1 Terms of warranty 10.3 Warranty repairs BOC provides a full replacement warranty for the BOC or their Authorised Service Agent must be Smootharc MMA 130/180 VRD sold by it against informed of the warranty defects, and the product defects in manufacture and materials. -
Page 20: Manual Metal Arc Welding Process (Mmaw)
MMA 130/180 VRD Operating manual 11.0 Manual metal arc welding process (MMAW) 11.1 Process 11.2 Welding machine Manual Metal Arc welding is the process of joining The most important consideration when contemplating metals where an electric arc is struck between the the use of arc welding for the first time is the purchase metal to be welded (parent metal) and a flux-coated of a suitable welding machine. -
Page 21: Welding Technique
MMA 130/180 VRD Operating manual 11.4 Electrode selection Having decided on a welding machine, appropriate accessories are required. These are items such as As a general rule the selection of an electrode is welding cables, clamps, electrode holder, chipping straight forward, in that it is only a matter of selecting hammer, helmet, shaded and clear lenses, scull cap, an electrode of similar composition to the parent gloves and other personal protective equipment. - Page 22 MMA 130/180 VRD Operating manual Electrode size The following table shows the current ranges generally recommended for BOC Smootharc 13. The size of the electrode is generally dependent on the thickness of the section being welded, and the Generally recommended current range larger the section the larger the electrode required.
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Page 23: Types Of Joints
MMA 130/180 VRD Operating manual Correct travel speed for normal welding applications Two terms relating to the preparation of butt welds varies between approximately 125–375 mm per require explanation at this stage. minute, depending on electrode size, size of run They are: required and the amperage used. - Page 24 MMA 130/180 VRD Operating manual Butt welds should be overfilled to a certain extent Single ‘U’ butt weld by building up the weld until it is above the surface Used on thick plates an alternative of the plate. Excessive build-up, however, should to a single ‘V’...
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Page 25: Fillet Welds
MMA 130/180 VRD Operating manual 11.6 Fillet welds Lap joints A fillet weld is approximately triangular in section, joining two surfaces not in the same plane and forming a lap joint, tee joint or corner joint. Joints made with fillet welds do not require extensive edge preparation, as is the case with butt welded joints, since the weld does not necessarily penetrate the full In this case, a fillet weld may be placed either... - Page 26 MMA 130/180 VRD Operating manual Throat thickness A fillet in which the contour of the weld is below a straight line joining the toes of the weld. It should A measurement taken through the centre of a weld be noted that a concave fillet weld of a specified from the root to the face, along the line that bisects leg length has a throat thickness less than the the angle formed by the members to be joined.
- Page 27 MMA 130/180 VRD Operating manual below. The angle of the electrode for various runs in a made with 3.15 mm or 4.0 mm diameter electrode. downhand fillet weld is shown on next page. Subsequent runs for large fillets may be either numerous straight runs or several wide weaving runs.
- Page 28 MMA 130/180 VRD Operating manual blow, finger nailing, and improper electrode coating On vertical and horizontal welds, it can also be caused moisture contents. by too large an electrode size and incorrect electrode angles. This defect can be prevented by: Defects caused by welding technique →...
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Page 29: Gas Tungsten Arc Welding (Gtaw/Tig)
MMA 130/180 VRD Operating manual 12.0 Gas tungsten arc welding (GTAW/TIG) 12.1 Introduction Shielding gas is directed into the arc area by the welding torch and a gas lens within the torch The Tungsten Inert Gas, or TIG process, uses the heat distributes the shielding gas evenly over the weld generated by an electric arc struck between a non- area. -
Page 30: Process Variables
MMA 130/180 VRD Operating manual 12.3 Process variables Process variable Explanation Usage DCEN When direct-current electrode-negative For a given diameter of tungsten (straight polarity) is used: electrode, higher amperage can be used Narrow bead, with straight polarity. Straight polarity is deep penetration →... -
Page 31: Welding Techniques
MMA 130/180 VRD Operating manual 12.4 Welding techniques Welding techniques The suggested electrode and welding rod angles for welding a bead on plate. The same angles are used when making a butt weld. The torch is held 60–75° from the metal surface. This is the same as holding the torch 15–30°... -
Page 32: Shielding Gas Selection
MMA 130/180 VRD Operating manual 12.5 Shielding gas selection Material Shielding gas Benefits Stable arc Brass Argon Low fume Cobalt-based alloys Argon Stable and easy to control arc Stable and easy to control arc Copper-nickel (Monel) Argon Can be used for copper-nickel to steel Increased heat input Helium Stable arc... -
Page 33: Welding Wire Selection
MMA 130/180 VRD Operating manual 12.6 Welding wire selection The following table includes the recommended welding consumable for the most commonly welded materials. Base material BOC consumable C-Mn and low carbon steels BOC Mild steel TIG wire Low Alloy steels 1.25Cr/0.5Mo Comweld CrMo1 2.5Cr/1Mo Comweld CrMo2... -
Page 34: Tungsten Electrode Selection
MMA 130/180 VRD Operating manual 12.7 Tungsten electrode selection Base metal Thickness Desired Welding Electrode Shielding Tungsten performance type range results current type characteristics General DCSP 2% Thoriated 75% Argon/ Best stability at medium currents. Good arc starts purpose (EW-Th2) 25% Helium Medium tendency to spit Medium erosion rate... - Page 35 MMA 130/180 VRD Operating manual Tungsten tip preparation Tungsten grinding Shape by grinding longitudinally (never radially). Remove the sharp point to leave a truncated point with a flat spot. Diameter of flat spot determines amperage capacity (See below). The included angle determines weld bead shape and size.
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Page 36: Typical Welding Joints For Gas Tungsten Arc Welding
MMA 130/180 VRD Operating manual 12.8 Typical welding joints for T-joint gas tungsten arc welding When welding a T-joint, the edge and the flat surface are to be joined together, and the edge will melt faster. Angle the torch to direct more heat to the flat Butt welds surface and extend the electrode beyond the cup to TIG welding is commonly combined with other faster... -
Page 37: Appendix A Welding Parameter
MMA 130/180 VRD Operating manual Appendix A Welding Parameter Please refer to the following table for the welding process parameters of MMA welding, and the details shall be subject to the actual conditions. Electrode Electrode Connection Welding Diameter Current type model type post... - Page 40 BOC is a trading name of BOC Limited, a Linde company. © BOC Limited 2022. Reproduction without permission is strictly prohibited. Details given in this document are believed to be correct at the time of printing. Whilst proper care has been taken in the preparation, no liability for injury or damage resulting from its improper use can be accepted.