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Ronch Weld Series User Manual

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SERIES
315MAX
STICK
•
TIG
1

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Summary of Contents for Ronch Ronch Weld Series

  • Page 1 SERIES 315MAX STICK •...

  • Page 2: Table Of Contents

    CONTENT 1. SAFETY • 1.1. SIGNAL EXPLANATION • 1.2. ARC WELDING DAMAGE • 1.3. THE KNOWLEDGE OF ELECTRIC AND MAGNETIC FIELDS • 2. SUMMARY • 2.1. BRIEF INTRODUCTION • 2.2. MODEL EXPLANATION • 2.3. WORKING PRINCIPLE • 2.4. VOLT-AMPERE CHARACTERISTIC •...
  • Page 3 4.6. WELDING PARAMETERS • 4.6.1. Joint form in MMA • 4.6.2. Electrode selection • 4.7. ARC WELDING DEFECT AND PREVENT METHOD • 4.8. OPERATION ENVIRONMENT • 4.9. OPERATION NOTICES • 5. MAINTENANCE & TROUBLESHOOTING • 5.1. MAINTENANCE • 5.2. TROUBLESHOOTING •...

  • Page 4: Safety

    1. Safety • 1.1. Signal Explanation  The above signals mean warning! Notice! Running parts and getting an electric shock or thermal parts will take damage for your body or others. The corresponding notices are as follows. It is quite a safe operation after taking several necessary protection measures.
  • Page 5  Never simultaneously touch electrically “hot” parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both welders.  When working above floor level, use a safety belt to protect yourself from a fall should you get a shock.
  • Page 6 DO NOT adds the fuel near an open flame welding arc or when the engine is running. Stop the engine and allow it to cool before refueling to prevent spilled fuel from vaporizing on contact with hot engine parts and igniting. Do not spill fuel when filling tank. If fuel is spilled, wipe it up and do not start engine until fumes have been eliminated.

  • Page 7: The Knowledge Of Electric And Magnetic Fields

     Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.  Valve protection caps should always be in place and hand tight except when the cylinder is in use or connected for use. •...

  • Page 8: Brief Introduction

    2. SUMMARY • 2.1. Brief Introduction MMA- series（discrete）welder is a MMA arc welder which adopts the latest pulse width modulation (PWM) technology and the insulated gate bipolar transistor (IGBT) power module. It can change work frequency to medium frequency so as to replace the traditional hulking work frequency transformer with the cabinet medium frequency transformer.

  • Page 9: Working Principle

    • 2.3. Working Principle The working principle of MMA- series（discrete）welder is shown as the following figure. Single/Three-phase 220V work frequency AC is rectified into DC (about 310V), then is converted to medium frequency AC (about 40KHz) by inverter device (IGBT), after reducing voltage by medium transformer (the main transformer) and rectified by medium frequency rectifier (fast recovery diode), and is outputted by inductance filtering.

  • Page 10: Installation & Adjustment

    3. INSTALLATION & ADJUSTMENT • 3.1. Parameters Model RONCHWELD 315MAX Parameters Single -phase，220V±10% Three-phase，220V±10% Power source 50/60Hz Rated input current（A） Rated input power（KW 12.5 ） Welding current range（ 10-250 10-315 A） Max no load voltage (V) 14.5 14.5 40% 250A 40% 315A Duty cycle（40℃,10mins 60% 225A...

  • Page 11: Duty Cycle & Over Heat

    • 3.2. Duty cycle & Over heat The letter “X” stands for duty cycle, which is defined as the proportion of the time that a machine can work continuously within a certain time (10 minutes). The rated duty cycle means the proportion of the time that a machine can work continuously within 10 minutes when it outputs the rated welding current.

  • Page 12: Welding Polarity Connection Way

    • 3.4. Welding polarity connection way • 3.4.1. MMA Choosing the connection of DCEN or DCEP is based on the arc stable burning condition. The different electrodes need different connection way. Please refer to the electrode manual. • 3.4.2. TIG GM-2000 ●...

  • Page 13: Connection To The Mains Supply

    Stricking arc of TIG operation：when tungsten electrode touches the workpiece，the short-circuit current is only 28A. After generating arc, current can rise to the setting welding current.If the tungesten electrode touches the workpiece when welding, the current will drop to 5A within 2s, which can reduce the tungsten spoilage farthestly，prolong the using life of the tungsten electrode，and prevent tungsten clipping.

  • Page 14: Layout For Front & Rear Panel

    4. PARAMETERS • 4.1. Layout for front & rear panel Function select key: Select MMA or LIFT TIG. ARC FORCE light: This light when lit indicates that the added arc force value can be set by the adjustment knob. MMA current adjust: This light when lit indicates that the welding current value of MMA can be set by the adjustment knob.

  • Page 15: Welding Current Adjustment

    • 4.2. Welding current adjustment Adjustment knob position multi circle potentiometer, next to no mark the specific welding current value size, clockwise rotation set value increased. Welding current range is 10～315A. MMA- series（discrete）has the function of welding current pre- setting. Before welding, adjusting welding current, the welding current display will show the ampere.

  • Page 16: Hot Start Adjustment

    Electrode diameter/mm Backing welding 70～80 75～85 60～70 70～80 current/A Gap/mm 3.2～4 3.2～4 3.2～4 2.5～3.2 Root face size 1～1.5 1～1.5 1～1.5 1～1.5 Intermittent Electrode welding 3.2～4 3.2～4 diameter/mm Backing welding 80～110 100～110 90～110 90～110 current/A Notice: the above parameters originate from “Welding Dictionary” P71, Volume 1 of Edition 2. •...

  • Page 17: Manipulation Of Electrode

    electrode electrode electrode upright workpiece workpiece touch workpiece 2～4mm Take the electrode upright The Electrode touch the workpiece Lift up for about 2-4mm Lifting arc: take the electrode to scrape the workpiece for striking arc. But it may cause the arc scratch, so must to lift arc in the groove.

  • Page 18: Welding Parameters

    • 4.6. Welding parameters • 4.6.1. Joint form in MMA In MMA welding, the common basic joint form: butt joint, lap joint, corner joint & T joint. butt joint lap joint corner joint T joint • 4.6.2. Electrode selection The electrode diameter selection is based on the workpiece thickness, welding position, joint form, welding layer, etc.

  • Page 19: Arc Welding Defect And Prevent Method

    Electrode should be drying according to user manual before using. For reducing the hydrogen of the molten pool and welding seam, and avoiding the blowhole and cold crack. In the welding process, the arc must not be too long; otherwise, it will cause unstable arc burning, large spatter, light penetration, undercut, blowhole, etc.
  • Page 20 Defect Caused reasons Prevent methods name The groove angle is not proper Choosing the proper groove angle & Welding The root face and assembly gap is assembly gap, improve the assembly seam not equal quality doesn’t Welding technics parameters are Choosing the proper welding meet the unreasonable...
  • Page 21 Defect Caused reasons Prevent methods name The groove angle is not proper Choosing the proper groove angle & Welding The root face and assembly gap is assembly gap, improve the assembly seam not equal quality doesn’t Welding technics parameters are Choosing the proper welding meet the unreasonable...
  • Page 22 Defect Caused reasons Prevent methods name The groove angle is not proper Choosing the proper groove angle & Welding The root face and assembly gap is assembly gap, improve the assembly seam not equal quality doesn’t Welding technics parameters are Choosing the proper welding meet the unreasonable...

  • Page 23: Operation Environment

    • 4.8. Operation Environment ● Height above sea level is below 1000m. ● Operation temperature range:-10 C～+40 ● Relative humidity is below 90 %(+20 ● Preferably site the machine some angles above the floor level, the maximum angle does not exceed 15 ●...

  • Page 24: Maintenance

    5. OPERATION CONTROL & CONNECTORS • 5.1. Maintenance In order to guarantee that arc welding machine works high-efficiently and in safety, it must be maintained regularly. Let customers understand the maintenance methods and means of arc welding machine more, enable customers to carry on simple examination and safeguarding by oneself, try one's best to reduce the fault rate and repair times of arc welding machine, so as to lengthen service life of arc welding machine .Maintenance items in detail are in the following table.

  • Page 25: Troubleshooting

    Using the dry compressed air to clear the inside of arc welding machine. Especially for clearing up the dusts on radiator, main voltage transformer, Monthly inductance, discrete IGBT, the fast recover diode and PCB, etc. examination Check up the bolt in arc welding machine, if it is loose, please screw down it. If it is skid, please replace.
  • Page 26 Troubles Reasons Solution display disaccord with The maximum current is not Adjust the potentiometer VR5 the setting current accordant (Please refer to 3.1) (RT1) on the current meter No no-load voltage Check the main circuit and the The machine is damaged output PCBs Welding cable is not connected...
  • Page 27 Troubles Reasons Solution Change the position of earth clamp or add earth cable in the two side of workpiece Use the short arc operation Over welding Induce the welding current output current Over heat protection Working time too Induce the duty cycle (interval long work) Power supply...

  • Page 28: Electrical Principle Drawing

    • 5.3. Electrical principle drawing...
  • Page 29 315MAX STICK •...

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Ronch weld 315max

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