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Westken

 information manuals and technical assistance 

General Manual for UN35 Butt Welder 

 

Westken, 

190 van Eden crescent, Rosslyn, Pretoria, South Africa. 

www.westken.co.za (Tel; 0027 12 541 6064/6065 fax; 0027 12 541 8086) 

 

Chapter one 

The layout and walk around of a UN35 Butt welder. 

(UN35 Butt welder) 

 

1)

 

Front side of the machine 

2)

 

Right Hand side of the machine. 

3)

 

Rear of the machine 

4)

 

Left Hand side of the machine 

5)

 

Top of the machine. 

6)

 

Electrodes and electrode clamps 

7)

 

Welding timers & Thyristors 

8)

 

Machine weights and foot prints 

 

These machines are free standing welders. The UN35 machines use 380volt @ 50hz 
supply.  All machines use water for cooling the transformer and thyristor. 

 

(1)

 

Front side of the machine. 

 
Looking from the front of the machines you will see left hand and right hand clamping 
jaws, foot switch on the floor, and the upsetting cylinder on the right hand front. The 
timer control is located on the right hand side cover.  There are two hinged doors that 
allow access to the transformer.  
 
The upper jaws have adjuster bolts which allow height adjustable for different material 
sizes. These machines have the lower electrodes fixed to the machine frame where there 
is adjusts for leveling lower electrodes.  There is also visible the upsetting cylinder 
adjuster nut for fine tuning the upsetting travel but this is normally factory set to the 
clients specification.  

 
 

Upper and lower basic electrode dimensions, 

 

1)

 

Upper electrodes

  

40mm high x 35mm wide x 25mm thick 

2)

 

Lower electrode

  

40mm high x 35mm wide x 25mm thick 

 

(2)

 

Right Hand side of the machine. 

 

Moving around the machine to the right side you will find the timer control system and 
the factory fitted program select switch. On the lower side cover you will find the water 
inlet and outlet, earthing connection point and the electrical supply access point. The foot 
switch plug in connect can be seen below the welding timer. 

 

Welding timer standard on a UN35 butt welder;  
  

1)

 

Six stage Vertical mount 

 

 

Содержание 35kva UN35

Страница 1: ...ustable Control voltage is 24vdc The machine has a CuCrZr copper upper clamping block and V cut to suit CuCrZr copper lower welding electrode On delivery the lower electrode can be un machined There are two 63mmdia clamping cylinders and a 63mmdia upsetting cylinder All air equipment solenoids FRL units are 1 4bsp The machine has a semi encapsulated transformer which is water cooled The machine is...

Страница 2: ...on in the cylinder down and closes the welding tips Once the tips are together the timer then switches the Thyristor switch also call the SCR AC switch Semipack which allows electricity to flow into the transformer The electricity coming into the transformer is normally 380vs at about 80amps The transformer changes this transforms supply to about 4 5volts at 9000amps output Because the clamping el...

Страница 3: ...t Hand side of the machine 3 Rear of the machine 4 Left Hand side of the machine 5 Top of the machine Chapter two The installation of a UN35 air operated Butt welder Please read Introduction to Spotwelding for newcomers others on our website UN35 Butt welder 1 Bolting the machine down 2 Cable sizes and fusing 3 Water pipes 4 Machine Fusing with supply cable not exceeding 10m Chapter three The oper...

Страница 4: ...e timer control is located on the right hand side cover There are two hinged doors that allow access to the transformer The upper jaws have adjuster bolts which allow height adjustable for different material sizes These machines have the lower electrodes fixed to the machine frame where there is adjusts for leveling lower electrodes There is also visible the upsetting cylinder adjuster nut for fin...

Страница 5: ...ide of the machine 5 Looking at the top of the machine Moving to the front of the machine we now look at the top of the machine where we find 1 Clamping jaws on the left 2 Upset cylinder on the right side 3 The 1 4 5 2 24vdc body port two solenoid valves at the rear of the machine 4 The FRL filter regulator lubricator back right hand side General Note on machine weights and sizes are for guideline...

Страница 6: ...l power supply to the on off switch or connection board provided within the machine see voltages cable sizes and supply fusing below When using a 380volt machine it is important to note the machine uses two phases of the three phase supply It is critically important that the machine is properly earthed to the earth stud provided on the machine 3 Connect a minimum 10 12mm water supply return pipe t...

Страница 7: ...is fed into the welding transformer it is converted transformed from high voltage low amperage 380v 60amps into low voltage high amperage 10volts 10000amps This transformed electrical supply is directed from the transformer through the machine electrodes butt welding area 6 Due to a higher resistance to electricity in the steel parts to be welded than in the copper electrodes heat is formed in the...

Страница 8: ...en 2 and 6 cycles 3 Upslope 1 to 3 cycles to minimize sparking during welding 4 Weld one allow sufficient welding to achieve a cosmetically good weld without excessive expulsion of weld area Please note weld time must always be longer that the upslope time 5 Heat one this adjusts the percentage of weld heat going into the weld area as a percentage of the total machine output Too much heat and the ...

Страница 9: ...o za for the following 1 Introduction to set up of Westken spotwelding timers for newcomers others 2 Cooling water for welding machines 3 Explanation of clever words terms concerning Resistance welding timer systems 4 Introduction to Spotwelding for newcomers and others 5 Introduction a basic explanation to Timer control systems 6 Manuals for other machines in our range of equipment If you have an...

Страница 10: ... information manuals and technical assistance General Manual for UN35 Butt Welder Westken 190 van Eden crescent Rosslyn Pretoria South Africa www westken co za Tel 0027 12 541 6064 6065 fax 0027 12 541 8086 10 ...

Страница 11: ...osslyn Pretoria South Africa www westken co za Tel 0027 12 541 6064 6065 fax 0027 12 541 8086 11 UN 35Butt Welder 3 380 V in 1 380 V in 13 12 AV2 11 AV1 10 AV Com 8 G1 PCB 5 K1 7 G2 4 K2 61 60 42 41 40 Thermo _________ 20 Gnd com _________ Thermo 24 Bit 8 23 Bit 4 22 Bit 2 21 Bit 1 _________ 20 Gnd com _________ Foot Sw ...

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