Product Specification

CNC Stationary Spot Welding Machine for Stainless Steel Rebar Copper Wire

Product Overview

This CNC-ready stationary spot and projection welding machine is engineered for fabricators and automotive component suppliers seeking consistent joint quality across mixed-metal production runs. The heavy-duty frame dampens welding shock, while the programmable controller supports rapid changeover between low-carbon steel, stainless steel sheets, rebar, copper wire, and aluminum workpieces with minimal downtime.

Beyond conventional lap welding, the unit handles projection welding of sheet-to-nut and sheet-to-bolt assemblies. Standard control interfaces simplify integration into robotic cells or CNC automated lines, making it a practical upgrade for high-volume metalworking operations that require repeatable weld parameters and low per-part operating cost.

Key Technical Advantages

Rigid All-Steel Frame Construction

The one-piece body is formed from thickened steel plate, delivering the stiffness needed to hold electrode alignment under repeated impact loads. This structural stability translates directly into reduced weld spatter and more uniform nugget formation across long production shifts.

High-Conductivity Electrodes with Pneumatic Assist

Upper and lower electrode assemblies use conductive alloy tips paired with a pneumatic pressure assist system, which concentrates current at the joint and supplies consistent clamping force. An integrated water-cooling loop keeps both electrode tips and the transformer within safe temperature ranges for continuous duty operation.

15-Program Memory for Fast Changeover

Up to fifteen weld parameter sets can be stored and recalled from the front panel. Switching from a stainless steel sheet run to a copper wire or rebar job takes seconds rather than manual recalibration, supporting mixed-batch production without sacrificing repeatability.

Projection Welding Versatility

The machine is configured for both spot and projection modes, allowing plant floors to attach nuts or bolts to sheet metal as easily as joining flat stock. This flexibility reduces the need for separate dedicated welding equipment in electrical enclosure or automotive stamping facilities.

Automation-Ready Control Interface

Standard signal ports allow direct hookup to CNC controllers or sixth-axis robotic arms. For producers running high-volume automotive or metal furniture lines, this interface enables synchronized welding sequences that keep pace with automated material handling equipment.

Water-Cooled Continuous Operation

The built-in cooling circuit maintains stable duty cycle ratings even during dense weld schedules. With forced water flow through the transformer and electrode holders, the machine holds rated output with 50% duty cycle for extended working windows in demanding manufacturing environments.

Applications

Working Principle

Technical Specifications

After-Sales and Support

• Free Spare Parts Kit — Consumable electrodes, seals and basic wear items shipped with the machine so you can handle routine maintenance without ordering delays.
• On-Site Commissioning & Training — Our technician supports field installation, alignment, parameter setup and operator training on your shop floor or directs your team remotely.
• Process Application Support — We advise on electrode selection, weld schedule development and multi-metal material handling based on your drawn parts.
• Documentation & Schematics — Full electrical, hydraulic and mechanical drawings plus maintenance manuals accompany every shipment for efficient troubleshooting.
• Customization Consultation — For non-standard throat depth, special fixtures or line integration, the factory supplies engineering guidance before order confirmation.

Frequently Asked Questions

Can this welder handle aluminum sheets as well as stainless steel?

Yes. The machine can weld aluminum and other non-ferrous materials when paired with the correct electrode profile and a customized parameter program stored in its 15-slot memory. We recommend sending samples for a welding test to define ideal settings for your specific alloy and thickness.

How do I select between DN(B)-100, 160, 200 and 250?

Consider your maximum combined steel thickness: DN(B)-100 welds up to 3.0+3.0 mm, DN(B)-160 up to 4.0+4.0 mm, DN(B)-200 up to 5.0+5.0 mm, and DN(B)-250 up to 6.0+6.0 mm. Higher electrode force ratings also support projection welding of larger nuts, so judge by your thickest clamping load.

Is the machine ready to plug into a robotic welding cell?

Yes. The controller provides standard I/O signals for CNC or PLC handshaking, and the body has mounting bosses for robotic integration. For a fully engineered turnkey cell we collaborate with the integrator during the design phase to ensure correct interface and safety wiring.

What does the 50% duty cycle mean for continuous production?

At the machine's rated secondary current, welding may be performed for half of any ten-minute window (e.g., 5 minutes of welding followed by cooling). With the built-in water-cooling circuit and appropriate cycle planning, most sheet-metal production runs fit comfortably within this rating.

Can you customize the throat depth or arm length?

Yes, the factory accepts customization requests for non-standard throat depths and special lower-arm configurations to accommodate large or deep workpieces. Contact us with your part dimensions and production volume to confirm feasibility.

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