Resistance Spot Welders, Resistance Spot Welding Machine
About Resistance Welding Machine (Spot Welding Machine) Introduction
The upper and lower electrodes are pressed against the workpiece, creating a certain resistance under pressure, and the welding current through the workpiece, the welding current is passed through the wrokpiece to generate heat energy, which causes the two workpieces to reach the same melting point and welding, then pressurized and close-fitting, finally forming resistance welding.
Resistance Welding Machine (Spot Welding Machine) Features
- When welding the workpiece, increase the pre-pressure to eliminate gaps between workpieces and make them fit tightly. It does not require any filler metals and gases.
- Simple operation, low deformation of the workpiece, the fast welding process and does not require any high skilled operators or professional technicians.
- The power required to operate is less to ensure the safe and no pollution working environment.
- It is suitable for welding mode of mass production due to its fast welding speed.
- Through the preheated pulses melt the plasticity of the workpiece, softening it for a tight fit and prevent spattering.
How to operate the Resistance Welding Machine (Spot Welding Machine)?
The principle of double-sided, two-point overcurrent welding is adopted. When welding the workpiece, the upper and lower electrodes are pressed against the workpiece, creating a certain contact resistance under pressure. The welding current creates an instantaneous thermal welding and circuit at the two contact resistance points, without affecting the internal structure of the welding workpiece.
Resistance Welding Machine (Spot Welding Machine) Application
Resistance welding machine is used to weld electrical conductivity metal plate and metal mesh. It is commonly used for welding thinner sheet metal and its widely used in the automotive industry for its high welding strength, which provides sufficient strength for the body of the vehicle and is completed within seconds by spot welding mode. It is also applied for the Metal Products Manufacturing Industry, Refrigerant Compressor Components, Aerospace Industry, Precision Electronic Parts and Kitchen and Sanitary Supplied Industry,…etc.
- Automatic Feeding Nut Welder
- Refrigeration Compressor Components Projection Welding Machine
- Automobile Components Projection Welding Machine
- Automobile Balance Bar Projection Welding Machine
- Automobile Shock Absorber Projection Welding Machine
- Automobile Door Catches Forming Machine
- Automatic Air Pressure Spot Welding Machine
- Spot-Projection Dual-Purpose Welding Machine
- Suitably Used For Welding On Long Workpiece
- Suitably Used For Welding On Round Cylindrical Type Workpiece
- Automobile Parts and Special Shape Workpiece Clamping Welding Machine
- Inverter Projection Welding Machine
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- Air control cylinder construction and solenoid valve.
Air control cylinder together with solenoid valve, with no-feed oil dry bearings with minimum friction resistance, quick response, to increase the unit punching speed and reduce air flow loss. - High-Performance air compression components (Air F.R.L units)
Explosion-resistant casing is fitted on the outside of the filter and oil feeder to prevent broken, and to protect it from out-side impact.
The filter and oil feeder cup can be dismounted to facilitate cleaning and maintenance. - The cooling tubing employs 3/8" bronze tube compulsory cooling cycle circuits
All cooling water pipes of the transformer, SCR and electrodes will have excellent cooling efficiency,with additional temperature rise automatic cut-off switch to completely avoid burning the transformer, SCR in case the water supply is interrupted. - High conductivity secondary re-circuits
Secondary side-welding recircuits made by bronze, low resistance and well-conductivity. - Safe and reliable pedal switch
Sturdy and safe pedal switch with quick starting and easy installation starting voltage DC 12V which can be used safely. - An optional press adjuster is provided for upward and downward adjustment
To respectively adjust the rising or lowering speed and impact during the pressurizing progress, to obtain excellent welding quality and speed. - Central air exhaust method to improve working environment
Concentrated exhausting system will not only reduce the exhaust noise, but also reduce oil mist spraying, to maintain clean working environment. (Fitted with exhaust outlet to exhaust air to outdoors.) - All series with micro-computer precision control circuit
Micro-computer control device: precision control, no effected by unstable power supply condition. - Transformer of excellent current conductivity and of minimum electric loss
Secondary circuit with high conductivity, a low input will produce output with powerful current with minimum power loss and low facility cost. - Welding current circuits with adoption of SCR no-contact-point switch
Main circuit switch employs no-contact-point SCR to increase high welding reliability and avoid accident caused by poor connection and save maintenance and repair expense.
Even under rigorous conditions, it will still assure stable welding current to obtain consistent and steady welding strength. - Solid Frame Structure
Sturdy body construction, excellent adaptability, reducing the electrode deviation during process, increase the welding quality, and reduce the shock and impact noise of the machine body. - Both interior and exterior of machine are processed with coating
Coated with powder burnt paint after acid phosphate to extend the life time.
Micro-computer Built-in Welding Controller | ![]() |
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Model | Rated Capacity | Max. Short Circuit Current | Max. Pressure | Cooling Water | |
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KVA | A | kg | l/min | ||
Spot Welder | DJ-A350 | 35 | 16,000 | 500 | 5 |
DJ-A500 | 50 | 18,500 | 700 | 6 | |
DJ-A600 | 60 | 20,000 | 800 | 6 | |
DJ-A800 | 80 | 25,000 | 900 | 8 | |
Spot-Projection | DJ-A500 | 50 | 18,500 | 700 | 6 |
DJ-A600 | 60 | 20,000 | 800 | 6 | |
DJ-A800 | 80 | 25,000 | 900 | 8 | |
DJ-A1000 | 100 | 30,000 | 1000 | 8 | |
Projection Welder | DJ-A1200 | 120 | 35,000 | 1000 | 10 |
DJ-A1500 | 150 | 42,000 | 1100 | 10 | |
DJ-A2000 | 200 | 48,000 | 1500 | 10 | |
DJ-A2500 | 250 | 53,000 | 1500 | 12 | |
DJ-A3000 | 300 | 60,000 | 1700 | 15 |
- Can design and make according to local voltage requirement (200V-600V).
- Big capacity model could be equipped with 3 phase transformers.
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DJ-MU1 | DJ-MU2 | DJ-MU3 | DJ-MU4-1 | |||||||||
With auotmatic current circuit maintenance. With power and voltage fluctuation compensation circuits. Equiped with up-slope control for adjustment of preliminary welding current wave forms. ![]()
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Why choose Da Jie's Resistance Welding Machine (Spot Welding Machine)
- Design for two stages cylinder stroke, upper electrode can be adjusted for higher and lower distance. It is also suitable for larege workpiece production .D57:K65
- Explosion-resistant casing is fitted on the outside of the filter and oil feeder to prevent broken, and to protect it from out-side impact. The filter and oil feeder cup can be dismounted to facilitate cleaning and maintenance.
- The machine head portion's vertical and horizontal fixed position of upper and lower electrodes' accuracy is one piece formed by CNC milling machine. To maintain the vertical point accuracy for upper and lower seat.
- All cooling water pipes of the transformer, SCR and electrodes will have excellent cooling efficiency, with additional temperature rise automatic cut-off switch to completely avoid burning the transformer, SCR in case the water supply is interrupted.
- High conductivity secondary re-circuits: secondary side-welding current circuits made by bronze, high density, lower resistance and well-conductivity.
- Both interior and exterior of machine are treated with coating: coated with powder baked paint acid pickling to extend the lifespan.
- An optional press adjuster is provided for upward and downward adjustment: to respectively adjust the rising or lowering speed and impact during the pressurizing progress, to obtain excellent welding quality and speed.
- Central air exhaust method to improve working environment.
- All series with micro-computer precision control circuit: control device adpots micro-computer controlled, precision control, no effected by unstable power supply condition.
- Main transformer: import high-conductive silicon steel from Japan, with secondary condutive copper of high conductively.
- Main electrical circuit switch adopts no-contact-point SCR to increase high welding reliability and avoid accident caused by poor connection and save maintenance and repair expense. Even under rigorous conditions, it will still assure stable welding current to obtain consistent and steady welding strength.
- Sturdy body construction, excellent adaptability, reducing the electrode deviation during process, increase the welding quality, and reduce the shock and impact noise of the machine body.
- Safe and reliable pedal switch.
- Upper and lower electrodes are imported alloy copper (Made in Japan), which is heat and wear resistant and easy to change the mold.
- The key sapre parts of machines: main transformer and current control (SCR),…etc. are imported from Japan or Germany high-class brand.
- In accordance with safe design of international standard: quality system is in ISO9001 certified.
- Various special specifications deisgn and customized machines for customers.
Primary sales market:
- America: Eaton Enginer, Gm, Ford
- Europe: Fisch Tools, mahle Tri-ring Valve
- Japan: Nissan, Tatung, Toyota, Kyoto Tools, Isuzu, Mitsubish
- Asia: Mahajak Auto Parts, Bangkok Spring
- Africa: Girlock Brakes
- Italy, Australia, France, U.K...etc.