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Solid State H.F Mosfet Welding Machine
The Solid State H.F MOSFET Welding machine is featured by obvious energy saving, high quality of welding seam, simple structure, easy maintanence, low failure rate, and low maintanence cost. The control part of QGT-1 Solid State H.F Welding machine is composed by relay and failure display LCD....
Description
The Solid State H.F MOSFET Welding machine is featured by obvious energy saving, high quality of welding seam, simple structure, easy maintanence, low failure rate, and low maintanence cost.
The control part of QGT-1 Solid State H.F Welding machine is composed by relay and failure display LCD.
Multiple and sensitive protection ensures the safe operation of the welding machine.
product characteristics
1.Over-current Protection: short circuit of induction coil or mis-operation may cause over-current, when exceeds the set value, protection occurs immediately.
2.Open Circuit: Mis-operation or induction coil is open circuit, protection occurs immediately.
3.Wrong phases: Three phase sequence wrong, protection occurs immediately. L5 of MUCK board is on.
4. Temperature protection: the temperature of the vibration device on the moulding board is once higher than 60 centigrade, protection occurs immediately.
5. Water-lack protection: When the water-pressure is not high enough or lower than the preset value, protection occurs immediately.
6. Water-temperature: The water temperature of cycling water is higher than the temperature rating, protection occurs immediately.
7. Working power supply protection: 24V switching power supply is not normal, protection occurs immediately.
8. Power board protection: The supply voltage is lower than 15V, water temperature is too high, MOSFET tube damage, impulse loss, protection occurs immediately.
In the products with high-frequency welding of pipes, when debugging the products with small pipe diameter, especially the products with pipe diameter less than 1 / 2 ", and the wall thickness is very thin, and the wall thickness is 1mm or less, when the steel strip enters the extrusion rod after passing through the high-frequency induction coil, sometimes the steel strip on both sides of the triangle area cannot be extruded, that is, the edges on both sides are misaligned, which is called edge rolling.
avoid measures
How to avoid this phenomenon? Technical workers suggest the following measures:
1. Try to shorten the space distance between the extrusion rod and the last forming rod (guide rod) immediately following it;
2. Adjust the appropriate extrusion force;
3. Minimize the width of heat affected zone of high-frequency welding (methods have been communicated with you in the previous article);
4. For the triangular zone of the high-frequency welding zone of the extrusion rod, it is very important for the steel strip to maintain a certain stable tension in the three-dimensional space
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