THOMSON FLASH WELDERS
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Versatile Thomson Crank Type Synchro-Matic Welders manufactured by PTS Welding Technologies, can weld steel, copper, aluminum, aluminum to copper, brass, bronze, titanium and stainless steels.  They have an extremely rapid upset.  A family of flashing and upset curves is possible with a simple adjustment of a flow control valve. The Synchro-Matic crank automatically provides smooth transaction.

STANDARD FEATURES

  • FRAME: A rigidly constructed, sturdy fabricated steel frame supports the platens and provides a flashproof enclosure for the transformer.

  • Transformer: Roman heavy-duty transformers are standard.  These transformers have a 50% duty cycle rating in accordance with RWMA standards.

  • Platens:  A right-hand manganese-bronze moving plate is mounted on ball bushings, or on gives and ways on larger models.  This insures precise alignment and minimizes friction.  A left-hand manganese-bronze stationary platen is mounted on, and insulated from the frame.

  • Air System:  The air system includes lubricator, filter pressure regulator, gauge and either manual or electric air valves for clamping and welding. Larger models may use hydraulics to achieve the desired forces.

  • Water System: A parallel water system with water manifolds is standard.   Water cooling is supplied to the transformer and to the left-hand and right-hand platens.  Die water cooling is optional.

  • Crank Type Sychro-Matic:  A Thomson innovated mechanism provides automatic synchronized flashing and upset.  The Synchro-Matic mechanism insures an ideal transition form flashing to upset at the most favorable moment.  A dial adjusts the flashing speed.  It is possible to attain optimum flashing characteristics on both ferrous and non-ferrous material.  The Synchro-Matic mechanism is powered by a double-acting air cylinder controlled by a special hydraulic snubbing device which is connected directly to the moving platen.

  • Heat Regulator:  The heat regulator has a multiple point tap switch.

  • Clamp Arrangement: Vertical-acting, alligator-type, or miter joint clamps are standard.  Custom-engineered clamps specially tooled to handle unusually difficult work pieces are also available.

SEQUENCE OF CLAMP OPERATION

  • Manual-Automatic:  (optional)  Standard clamps are closed individually using foot valves. The Synchro-Matic sequence is initiated by hand valve.  Welding is then automatically performed by the Synchro-Matic device.  Clamps are opened by foot valves. Platen is returned by hand valve.

  • Semi-Automatic (optional)  Air clamps are individually closed by foot switches or punch buttons.  Clamps are opened (for reclaiming) by punch bottoms.  Welding is automatically performed and clamps are automatically operated by a Synchro-Matic device.  Clamps are automatically opened and platen is returned with a time-delay device.

  • Fully Automatic (Standard, except FOB-10)  A single foot switch operates both clamps through a solenoid valve.  Synchro-Matic is initiated by a pressure switch in the clamp cylinder.  Welding is automatically performed by a Synchro-Matic device.  Clamps are opened and platen is returned automatically.

  • Other sequences are available on request.

OPTIONS

  • Transformers: Transformers sized to specific requirements are available.

  • Adjustable Back-Up Stops:  Stops are used for part location and as backup stops for bar, rod, and plate stock.

  • Dual Force:  Provides low initial upset force followed by higher force required for flash welding copper to aluminum and desirable for some high alloy ferrous materials.

  • Adjustable Lower Work Holding Dies:  Lower right-hand work holding die is adjustable vertically.  Lower left-hand die is adjustable horizontally.

  • Gaplator (Platen Retraction)  Provides a controlled gap automatically in original die opening after work is clamped in the machine.  Permits operator to load pieces butted together, reducing loading time.

  • Anneal:  Available if work is additionally annealed immediately after a weld is made.

  • Alignment Work Guides:  Accurately align rims, sheet, strip and saw stock.

  • Pinch-Off Dies:  Costly flash of non-ferrous metal  is removed using pinch-off dies, which remove excess material as well as support work surfaces for better welds.

  • Data Acquisition Systems:  State-of-the-art designs enable in-plant personnel to systematically develop precise welding schedules and also serve as the back-bone of quality assurance programs.  System features available include options for monitoring and hard-copy print-outs of flash travel, upset travel, flashing current and final pressure.

  • Resistance Welding Control Systems:  PTS Welding Technologies offers a wide selection of powerful, economical, programmable microprocessors, SCR and solid-state computer resistance welder control systems.  Controls may be specific with a broad feature in order to meet any technical welding requirement.
STANDARD THOMSON FLASH WELDER GUIDE
SEVEN MACHINE MODELS RANGING IN CAPACITY FORM 10-600 KVA
Size KVA Rating Capacity (sq.in)
Weldable area
for low forging steel*		 Maximum
clamping force
(pounds at 80 psi.)		 Maximum
upset force
(pounds at 80 psi.)
FOB-10 10 12 2000 1000
F-1 30
40
50		 .60
.65
.70		 6000 3000
F-2 50
75
100		 .85
1.00
1.10		 12,500 7,500
F-3 100
150		 1.50
1.70		 25,00 14,500
F-4 150
200
250		 2.80
3.20
3.50		 60,000 28,000
F-5 250
400		 5.90
7.20		 1110,000 50,000
F-6 400
600		 9.00
12.80		 250,000 100,000
* Consult us for recommendations on other materials.