Trintfar 150KVA Pneumatic AC Projection Spot Welding Machine utilizes the general mains supply to lower the voltage and increase the electric current. Such kind of low voltage but large current will be transmitted from the electrode to the linked point of two work pieces. On the linkage, due to the resistance of work piece, high temperature will occur so the metal will therefore generates high heat to make the work pieces in molten condition. Thus, the purpose of welding the two work pieces is achieved.
We are a professional carbon steel resistance ac spot welding machine manufacturer, the power of the stationary type carbon steel resistance AC spot welding machine and 50k carbon steel ac spot welding machine that we produce is from 25KVA to 800KVA. It can be used to weld 10mm of iron and metals like stainless steel. Low cost 50k ac spot welding machine applicable to all kinds of hardware.
 
 
FeaturesFeatures of Stationary Type stationary type carbon steel resistance ac spot welding machine Special design integration of pressurized cylinder which can ensure stability and mobility of pressurized and welding speed. 1. Multiple same ways forced water cooling system to ensure stability and reliability of long-term operation. 2. Pressurized electrode speed can be adjusted, slow down the impact to welding work piece when pressuring, also reduces the noise when welding. 
3. Upper and lower electrode adopts supplementary stroke pressurized mode which can improve the operation of welding process. 
4. Welding Control System: WD-KD5 Intelligent Microcomputer Controller. The AC pulse spot welder that we produce can be matched with many types of welding controllers. 
5. Silicon Controlled: Adopt the SEMIKRON, IXYS Silicon controlled from West Germany or IR Silicon controlled from United States; 
6. Pneumatic Control System: Adopt large displacement of magnetic valve and gas assembly, sufficient air supply; adopt the quick exhaust cylinder, quick response, good servo performance. 
7. Welding Transformer: Adopt high purity silicon steel disc refined welding transformer; Good permeability and electrical conductivity; Less consumption of electricity; Be able to weld the metal plates like 8mm+8mm low-carbon 

Specification

Item Model	Maximum Short Current KA	Rated Duty Cycle %	Secondary Voilage V	Rated Power KVA	Electrode Pressure N	Electrode Stroke mm	Cooling Water Lmim
MD-10T	10	50	≈9.8	≤20	1200	50	20
MD-20	20	50	≈9.8	≤50	4700	80	24
MD-25	25	50	≈9.8	≤70	4700	80	24
MD-40	40	50	≈11.6	≤120	7300	80	30
MD-60	60	50	≈11.6	≤160	12000/18000	100	50
MD-80	80	50	≈11.6	≤240	12000/18000	100	50
MD-120	120	50	≈11.6	≤300	18000	100	60