Control principle of spot welder?
Belonging to a welding machine in resistance welding, resistance welding is divided into four forms: welding spot welding, projection welding, butt welding, seam welding. As a result of wide range of applications, the form of direct, so we are accustomed to welding machine collectively. So you ask the spot welding control principle, in fact, is the principle of resistance welding.Resistance welding is a method of welding the workpiece by applying pressure through the electrode and using the resistance heat produced by the current passing through the contact surface of the joint and the adjacent region.The physical essence of resistance welding process, is to use a lot of energy of plastic deformation and resistance to heat and the welding zone itself, so close to the lattice distance form the metal bond between the metal atom two separation performance, to produce a sufficient amount of grain in the combined surface and get the weld joint of solder joints, or. Resistance welding is a welding quality stability, high production efficiency, easy to realize mechanization, automation of the connection method, widely used in automobile, aerospace, electronics, household appliances and other fields.
You this is the equivalent of a counter current through the method, considered a record, but the conventional signal acquisition counter voltage value, you can pass the current into voltage does not exceed the value of 30V to counter acquisition equipment above, when the voltage reaches above 5V can be considered to be a high level, a number of the best. You calculate this current size range, across an appropriate resistance, by recording more than 5V times more than by the voltage of this resistance to count. The welding machinery is provided with these machines
You have a big problem, and the spot welder contains a lot.When you ask is the most basic principle of AC spot welding machine.AC spot welding principle: Transformer step-down, secondary voltage is low, about 7-10 volts, high current, a few Wan wan.The control principle is to control the primary terminal voltage of the transformer by using thyristor characteristics. Time to power frequency shall prevail.
