Heat repair of cylindrical straight weld, heat preservation annealing application of weld induction heating, such as welding flange slag after heating the planer cutter removed. The width of the heating area is 30mm, the length (Max) is 700mm, and the heating temperature is 500~500℃. The heating time is ≤45 seconds
First, determine the following scheme:
1. Two yfl-160 devices are used for induction heating of the heating area. The equipment parameters are as follows:
Working power supply
Three-phase 380 v / 50 hz
Cooling water flow (main engine)
5 l/Min
(0.1 MPa)
Operating voltage range
360 v to 420 v
Cooling water flow (transformer)
5 l/Min
(0.1 MPa)
Maximum input current
220 a
Cooling water pressure
0.1 ~ 0.3 MPa
The input power
160 kw
The host weight
85 kg
Oscillation frequency
15-35 KHZ
Transformer weight
105 kg
The efficiency of
90%
Main engine size (mm 3)
650 * 480 * 1440
Load duration
100%
Transformer size (mm 3)
500 * 800 * 580
The total length of the heating is 1400mm (700mm on one side). Two devices shall be used for simultaneous heating. The inductor shall be made into a u-shaped slot with a thickness of 350mm.
Comparison between ultra-audio induction heating equipment and if equipment:
1. Advantages and disadvantages of using two yfl-160 devices:
(1) high stability, about 10%-20% energy saving compared with IGBT if equipment, but the operation may be more complicated, heating from both ends, the process is more complex.
2. Advantages and disadvantages of using yfzp-200 equipment:
(1) the heating speed is fast, the operation is convenient, the power is large, compared with the super audio frequency induction heating equipment is relatively wasteful, if applied to the dithermic forging of the round steel bar material, the equipment stability is poor, but the process requires the heating temperature is low, far lower than the equipment to bear the load, can continue to work for 24 hours, can meet the corresponding heating requirements.
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