Medium Frequency DC Double Side Spot Welding Machine for Automotive Seat Frame
Medium Frequency Spot Welding Machine
,DC Double Side Spot Welder
,Automotive Seat Frame Welding Machine
PDKJ LWM-F series air-cooled laser welding machine: 1200W-2000W, 0.2-5mm capacity, built-in wire feeder, 10m fiber, red-light aiming. No chiller needed—68kg portable cabinet runs on 220V. Ideal for automotive seat frames, sheet metal, and on-site welding.
1200W / 1500W / 2000W — the complete welding system sits in one 68 kg cabinet. There is no water chiller, no coolant hose, no external power cabinet: roll the machine to the workpiece, plug it into a standard 220 V socket, and weld.
The air-cooled layout is the whole point. A conventional handheld laser welder needs a separate chiller the size of a suitcase, which is why it normally stays in one bay. Take the cooling path inside the cabinet and the machine becomes something one person can wheel to a staircase, lift into a van, or move between two workshops in the same afternoon.
Most handheld laser welders are portable only in the brochure: the gun is light, the chiller is not. The LWM-F series removes that second box entirely. What is left is a single cabinet holding the laser source, the air-cooling path, the wire feeder and the control panel — the same footprint as a small trolley welder.
The cooling loop is integrated into the machine body, so there is no separate chiller, no coolant hoses to route and no water quality to maintain. Setup is a power cable and a gas line. It also means no drain-down before the machine is shipped or stored in a cold workshop.
A filler wire spool sits inside the cabinet and feeds through the torch, so a joint with a small gap can still be closed in one pass instead of being re-cut. Wire diameter and feed speed are set on the HMI, and the spool is changed without removing a side panel.
Thin sheet is where the process saves the most time: 0.5 mm stainless joins without the burn-through and distortion that come with TIG. At the other end, the 2000F reaches 5 mm on stainless and carbon steel, which covers most sheet-metal frames and brackets.
The delivery fiber is 10 m as standard, long enough to leave the cabinet at the foot of a staircase and still weld at the top. Red-light positioning shows exactly where the beam will land before the trigger is pressed, which is faster and safer than lining a joint up by eye.
Power, pulse mode, wire feed and gas delay are set on the HMI rather than by dialling a knob and checking the result. A job can be set once, written down as a short list of numbers, and repeated by the next operator on the next shift.
At 68 kg with four castors and a rear handle bar, the machine is moved by one operator. That is what makes it useful for installation work — guardrails, lift doors, ductwork, shopfronts — where the workpiece cannot come to the workshop.
- The work is on site or in a customer's building and cannot be brought to a bench.
- You weld several product lines in small batches and cannot justify a chiller per bay.
- Floor space is tight — one cabinet replaces a welder plus a cooling unit.
- Joints are 0.5–3 mm sheet with occasional 4–5 mm plate, and you want to stop grinding every seam afterwards.
- You need to bridge small gaps without switching to a second process.
- Output is high and the part is identical every cycle — a robot or platform welder pays back faster than a handheld unit.
- The section is 8 mm and above, where a single-pass laser weld stops being economical.
- The joint has to be fully penetrated and pressure-tight to a coded standard.
- The material is copper or a thick highly reflective alloy, which needs a different source and a dedicated process.
Eight views of the production machine: the body and castors, the ventilation path that makes air cooling possible, the HMI, the wire spool compartment, the torch and the rear connections.
The cabinet, the torch and the 10 m fiber are the same across all three models. What changes is the source: the 1200F covers most 0.2–3 mm sheet work, the 1500F adds margin for 4 mm stainless and carbon steel, and the 2000F is specified when 5 mm plate or long continuous seams appear in daily production.
| Parameter | LWM-1200F | LWM-1500F | LWM-2000F |
|---|---|---|---|
| Laser power | 1200 W | 1500 W | 2000 W |
| Capacity — stainless / carbon steel | 0.2–3 mm | 0.3–4 mm | 0.3–5 mm |
| Capacity — aluminium / galvanized | 0.2–2 mm | 0.3–3 mm | 0.3–4 mm |
| Cooling system | Air-cooled | Air-cooled | Air-cooled |
| Laser wavelength | 1080 nm ±5% | 1080 nm ±5% | 1080 nm ±5% |
| Operating voltage | AC 220 V | AC 220 V | AC 220 V |
| Maximum overall power output | 3.5 kW | 4 kW | 5 kW |
| Welding speed range | 0–20 mm/s | 0–20 mm/s | 0–20 mm/s |
| Length of fiber optic cable | Standard 10 m | Standard 10 m | Standard 10 m |
| Protective gas | Argon / Nitrogen | Argon / Nitrogen | Argon / Nitrogen |
| Aiming and positioning | Red light indicator | Red light indicator | Red light indicator |
| Operating temperature | 15–35 °C | 15–35 °C | 15–35 °C |
| Weight | 68 kg | 75 kg | 75 kg |
| Physical dimensions | 680×380×820 mm | 680×380×820 mm | 680×380×820 mm |
Choosing between the three. Work from the thickest joint you make every day, not the thickest you might make once. A shop that runs 1–2 mm stainless cabinets all week is better served by the 1200F, because a lower-power source puts less heat into thin sheet and is easier to keep flat. Step up to the 1500F when 3–4 mm brackets or flanges appear regularly, and to the 2000F when the same operator has to weld a 5 mm plate in the morning and 0.8 mm fascia in the afternoon.
What the numbers do not show. Welding speed is listed as 0–20 mm/s because the useful figure depends on the joint: a lap seam on 1 mm stainless runs at the top of that range, while a 4 mm flange is welded closer to the bottom. Gas, focal position and wire feed all move the optimum, which is why the machine ships with a starting parameter sheet for common materials rather than a single factory preset.
Tack, stitch and point welds on stiffeners, ribs, fasteners and cabinet panels — the joints that used to need TIG, plug welds or rivets. A single spot is set by pulse energy on the touch screen, so the same pattern repeats across a batch.
Butt, lap and corner seams on tanks, ducts, frames and pipes. The narrow heat-affected zone keeps distortion low, and with the built-in feeder a gap of up to about 0.5 mm can be closed in a single pass instead of being re-cut and re-clamped.
Sheet-metal fabrication across signage, appliances, lift doors, battery packs and process equipment — wherever 0.2–5 mm metal needs joining. The same machine handles mirror-finish stainless for visible surfaces and plain galvanized sheet for internal structure, so one unit can serve several product lines without a second setup.
Send the joint drawing, base material, sheet thickness and daily output. We will confirm whether the 1200F, 1500F or 2000F fits, and send back the torch, nozzle and gas settings for your part. Sample parts can be welded and returned with photos and parameters before you order.
Images are production samples. Specifications subject to change without notice.
