Okorder.com is a professional 100 Xr supplier & manufacturer, offers integrated one-stop services including real-time quoting and online cargo tracking. We are funded by CNBM Group, a Fortune 500 enterprise and the largest 100 Xr firm in China.
In order to guarantee the service life of welding electrode and the stability of welding quality, the resistance spot welder can not make the circulating water tank of itself.Resistance spot welding voltage using low (only a few volts), the welding time is short (millisecond), greater welding current (3000 amperes minimum to tens of thousands of Amperes), the motor pressure makes the electrode crushing local formation of a resistance welding welding process.Resistance spot welder must use special circulating water tank and water pump to ensure proper water delivery pressure and water flow. In order to better cool the electrode, not to the electrode because of poor cooling, excessive non long-term wear and tear. Or adhesion between the electrode and the workpiece.s
1, K - power switchUsed to connect (or cut off) contact with mains power (220V, 50 Hz)2, RT - starting resistanceWhen the welding machine is started, the filter electrolytic capacitor should be charged. In order to avoid excessive surge current damage to the switch and trigger circuit breaker tripping, access start at boot time to limit the inrush current resistance. After normal operation, the starting resistor is shorted by the relay. In actual circuit, in order to avoid the damage of starting resistance caused by inrush current, the starting resistance adopts thermistor (PTC and NTC), they have good shock resistance.3, J1 - relayAfter the switch is switched on, the current is charged by the starting resistor to the filter electrolytic capacitor. When the capacitor voltage reaches a certain value, the auxiliary power supply starts to work, the 24V power is supplied, the relay is pulled in, and the starting resistance is short circuited.4, DB - silicon bridgeThe silicon bridge is used for primary rectification, and the DC current of the 308V is rectified by rectifying the mains 220V and 50 Hz alternating current.5, C1 - electrolytic filter capacitorAfter rectification, the output DC current of 308V is pulsating DC, and the capacitor plays a smoothing role6, R - discharge resistanceAfter the shutdown, there is a high voltage in the filter capacitor. For safety purposes, the resistor will be used to drain the power.7, C2 - high frequency filter capacitorIn the high frequency inverter, the high frequency current is needed for the switch tube, while the reason of the electrolytic filter capacitor is the inductance and lead inductance of the filters
Resistance welding is the first electrode to compress the workpiece, then the transformer output current, resistance heat generated by the current flowing through the workpiece, the workpiece is heated to melt or plastic state, to achieve a firm connection welding method. Spot welding machine is a kind of resistance welding equipment which uses electrode to produce solder joint on the workpiece.Rivet welding machine is mainly used in the production of the products or implant type heating hot melt welding. The equipment must be provided with a hot melt mold and a workpiece positioning die matched with the workpiece to be welded. They have different ways of producing heat. One is internal heat and the other is external heat.Riveting machine (also known as rivet machine, riveting machine, riveting machine, rolling machine etc.) is a riveting equipment and developed based on the principle of cold rolling. Riveting machine is referred to as the rivet machine, riveting, riveting equipment eyeleting machine etc..s
When the body of the current through the 0.6mA, the body will cause a tingling sensation; through the current 20mA, can cause severe pain and dyspnea; current through the 50mA ANN are in danger; the current through the 100mA Ann above, the heart stops beating can cause paralysis, heart, until death.s