Flame Straightening
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FLAME STRAIGHTENING FLAME STRAIGHTENING – THE OPTIMAL PROCESS TECHNOLOGY TO ELIMINATE WORKPIECE DISTORTION FLAME STRAIGHTENING: Flame straightening is a quick and gentle way to eliminate the transverse-longitudinal shrinkage and angular distortion caused by welding. Flame straightening is a proven production method in welding companies. The procedure is easy to use. However, the prerequisite is a good qualification of the employees. HEATING EFFECT DURING FLAME STRAIGHTENING 1. Local sharply limited heating Heating shuold be fast, heat accumulation must be achieved. The temperature level...

FLAME STRAIGHTENING FLAME STRAIGHTENING – THE OPTIMAL PROCESS TECHNOLOGY TO ELIMINATE WORKPIECE DISTORTION PRACTICAL EXECUTION Depending on the part to be straightened, the heat is introduced in different heat figures. HEATING POINT e.g. straightening of thin sheets or tubes The heat point should be kept as small as possible. Straighten from the clamping to the middle of the sheet metal field. HEAT OVAL e.g. pipe straightening The heat oval is heated through and arranged in the longitudinal direction of the pipe axis. HEAT LINE - HEAT POINTS e.g. straighten a one-sided weld The plastic area...

FLAME STRAIGHTENING FLAME STRAIGHTENING – THE OPTIMAL PROCESS TECHNOLOGY TO ELIMINATE WORKPIECE DISTORTION DEVICE SELECTION The flame straightening torch is selected according to application and workpiece thickness. ONE-FLAME TORCH OF A NORMAL WELDING EQUIPMENT It is the most common torch for straightening with heat spots, lines, wedges or oval-shaped. MULTI-FLAME TORCH It is used for straightening with thermal screeds, wedges and ovals on workpieces from about 20 mm wall thickness. SPECIAL TORCH It is designed in form and performance for the respective flame straightening task and is used,...

FLAME STRAIGHTENING FLAME STRAIGHTENING – THE OPTIMAL PROCESS TECHNOLOGY TO ELIMINATE WORKPIECE DISTORTION BASICS OF OXYFUEL TECHNOLOGY WELDING INSERT Welding nozzle Mixing pipe Mixing nozzle Connection nut Pressure nozzle Handle Oxygen adjustment valve Fuelgas adjsutment valve Fuel gas connection Welding insert Welding insert marking Consumption [l/min] Mixing – system Oxygen connection PRACTICER'S TIP  Calculation formula: Torch size 2 – 4

FLAME STRAIGHTENING PRODUCTS FOR FLAME STRAIGHTENING CYLINDER-PRESSURE-REGULATOR U 13 F Cylinder pressure regulator U 13 F U 13 F Characteristics:  Constant working pressure through large membrane area, even with varying cylinder pressures, exact adjustments  Safety: protected against burning out by special arrangement and quality of the seal and membrane materials  Optimum flow characteristics and large housing surface hinder freezing  Resistant to fluctuations through indirectly impinged membrane. Gas flow is not fed through the membrane chamber  Resistance to burning out confirmed...

FLAME STRAIGHTENING PRODUCTS FOR FLAME STRAIGHTENING CYLINDER-PRESSURE-REGULATOR U 13 F Gas flow Inlet pressure Flow rate (m3/h) Oxygen ) With outlet pressure [bar] 5 Cylinder pressure regulator U 13 F For oxygen inlet pressure 200 Bar Cylinder pressure regulator U 13 F For oxygen inlet pressure 200 Bar Cylinder pressure regulator U 13 F For oxygen inlet pressure 300 Bar Cylinder pressure regulator U 13 F For oxygen inlet pressure 300 Bar  on request  picture may differ  subject to change

FLAME STRAIGHTENING PRODUCTS FOR FLAME STRAIGHTENING PRESSURE CONTROL PANEL BU 13AC Pressure Control Panel BU13AC GASSUPPLY Due to the high heat output of flame straightening torches, an appropriately dimensioned gas supply is of great importance for safe working and optimum results. A fuel gas cylinder is no longer sufficient from a torch size of only size 6. In this case either a second fuel gas cylinder, which is connected by means of a multiple distributor, or a cylinder bundle is required. Pressure Control Panel BU13AC Characteristics:  Acetylene-pressure control panels for high flow...

FLAME STRAIGHTENING PRODUCTS FOR FLAME STRAIGHTENING PRESSURE CONTROL PANEL BU 13 AC Flow rates BU13AC: The withdrawal rate should not exceed approx. 0.5 Nm³/h per cylinder in permanent operation, so no solvent from the cylinder will enter the withdrawal system. However, the flow rate may be increased to approx. 1m³/h for brief peak loads.  on request  picture may differ  subject t

FLAME STRAIGHTENING PRODUCTS FOR FLAME STRAIGHTENING CYLINDER COUPLINGS & PRESSURE REGULATORS Cylinder couplings Cylinder coupling for connecting 2 or 3 single acetylene cylinders (up to 6 cylinders possible on request), consisting of:      Cylinder connection clamp HP- Connection hose Safety device Block ball valve as high-pressure shut-off valve Connection piece for cylinder pressure regulator Particularly suitable for the operation of heat torches with medium capacity, if a single cylinder does not allow sufficient acetylene withdrawal and a cylinder bundle is not available....

FLAME STRAIGHTENING PRODUCTS FOR FLAME STRAIGHTENING CYLINDER COUPLINGS & PRESSURE REGULATORS Single stage with inlet pressure 200 bar Backpressure max. Cylinder connection Hose connection With polymer spring bonnet for outlet pressures up to 20 bar Single stage with inlet pressure 25 bar Backpressure max. Hose connection Cylinder connection Single stage with inlet pressure 10 bar Backpressure max. Hose connection Cylinder connection Single stage with inlet pressure 300 bar Backpressure max. Cylinder connection Hose connection  on request  picture may differ  subject to c

FLAME STRAIGHTENING PRODUCTS FOR FLAME STRAIGHTENING SAFETY DEVICES For the protection of cylinder regulators and tapping points Type of gas Safety units: FA, NV, TV Fuel gas operating pressure (max.): Acetylene 1,5 bar, Hydrogen 4,0 bar For the protection of cylinder regulators and tapping points Type of gas Safety units: FA, NV, TV for high gas flow Fuel gas operating pressure (max.): Acetylene 1,5 bar, Hydrogen 4,0 bar or connection fittings see next page) For the protection of cylinder regulators and tapping points Type of gas Safety units: FA, NV, TV Fuel gas operating pressure (max.):...