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Welding laboratory
 

Functional introduction
    The welding laboratory mainly focuses on the research on weldability, welding technology and joint performance of materials for the metallic materials including low alloy steel, stainless steel, nickel-base alloy , etc. for power stations. It carries out welding technology assessment in accordance with domestic standards, ASME specifications, European standards , etc. It provides welding technology consultation and failure analysis services of weld component.
Instruments and equipment
    Double-pulse MIG/MAG welding machine
    Pulse TIG welding machine
    Thyristor rectifier arc welding machine
    Inversion DC arc welding machine
    Inversion DC argon arc welding machine
    Consumable electrode MIG/MAG gas shielded arc welding machine
    Automatic submerged arc welding machine
Parameters and technical level
    Name and model number of equipment: Double-pulse MIG/MAG welding machine
    All-digital inverter power supply; continuous current adjustment range: 10-400A;
    Duty cycle: 60%;
    Rated current at 100% duty cycle: ≥310A;
    Power factor of power supply: ≥0.92;
    Weld the low alloy steel and stainless steel plates above 0.6mm and the aluminum alloy plates above 0.8mm;
    It is able to normally operate in the environment with the -10℃-40℃ temperature and the 90% humidity.

    Name and model number of equipment: Pulse TIG welding machine
    Current adjustment range: 3-280A; 
    Duty cycle: 60%;
    Welding current at 100% duty cycle: TIG 280A;
    It has the modes including pulse-free, low-frequency pulse, high-frequency pulse , etc. and its pulse frequency is 0.1-15000HZ;
    It is able to normally operate in the environment with the -10℃-40℃ temperature and the 90% humidity.

    Name and model number of equipment: Thyristor rectifier arc welding machine
    Rated input capacity: 34KVA; 
    Rated input current: 52A;
    Current adjustment range: 50-400A;
    Output no-load voltage: 70V;
    Duty cycle: 60%;

    Name and model number of equipment: Inversion DC arc welding machine
    Rated input capacity: 18.4KVA;
    Rated input current: 28A;
    Current adjustment range: 20-400A;
    Output no-load voltage: 76V;
    Duty cycle: 60%.

    Name and model number of equipment: Inversion DC argon arc welding machine
    Input capacity: 15.5KVA;
    Current adjustment range: 20-400A;
    Output no-load voltage: 72V;
    Duty cycle: 60%;
    It has DC arc welding, low-frequency pulse argon arc welding, high-frequency pulse argon arc welding and manual arc welding functions and it is suitable for multiple welding processes;

    Name and model number of equipment: Consumable electrode MIG/MAG gas shielded arc welding machine
    Input capacity: 16.8KVA;
    Rated input current: 25.5A;
    Current adjustment range: 50-350A;
    Output no-load voltage: 60V;
    Duty cycle: 60%;
    It has gas shielded welding and manual arc welding functions; 
    The voltage is continuously adjustable and it is precisely matched with current; the carbon dioxide gas shielded or mixed gas  shielded welding can be performed.

    Name and model number of equipment: Automatic submerged arc welding machine
    Rated input capacity: 90KVA;
    Rated input current: 137A;
    Current adjustment range: 250-1250A;
    Output no-load voltage: 75V;
    Duty cycle: 80%;
    The welding power supply has multiple functions for submerged arc welding, manual welding and carbon arc air gouging;


Allowable test research items
    Use the welding methods including SMAW, TIG, MIG, MAG, SAW , etc. to carry out the welding test of the materials including low alloy steel, stainless steel, nickel-base alloy , etc.

 

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