Penta Laser · Model buying guide
Penta Laser GAN 2412 Gantry Laser Welder for Square Electrolysers
Penta Laser's GAN 2412 is an overhead gantry laser welder built for square electrolysers used in hydrogen production. It welds within 2400 × 1250 mm, carries a 3000 - 6000 W source and occupies a 12.6 m long machine frame. Start by sending Penta drawings of every plate and frame you plan to weld.
By WeldOrigin Editorial · Sources checked
What the manufacturer publishes
Values as the manufacturer publishes them for this model, with the source for each line.
- Model
- GAN 2412, Industry-Specific Welding Machine Series [1]
- Structure
- Elevated overhead gantry [1]
- Welding dimensions
- 2400 × 1250 mm (no height or vertical travel listed) [1]
- Equipment size
- 12600 × 4600 × 3800 mm [1]
- Laser power
- 3000 - 6000 W [1]
- Laser source codes
- FFRC-H, FFRC-SM, FFRQ, FFRSC [1]
- Welding head
- Collimating and focusing welding head [1]
- Electrical supply
- 380 VAC, 50 Hz [1]
- Compressed air
- 0.5 - 0.7, unit printed as "MPO" (most likely MPa) [1]
- Applications
- Hydrogen energy core equipment, energy protection equipment, chemical equipment [1]
What Penta builds into the GAN 2412
Penta places the GAN 2412 in its Industry-Specific Welding Machine Series and presents it as a laser welder for square electrolysers. The frame is an elevated overhead gantry, so the head travels above the work while plates and frames lie on the bed below. Penta names three application fields: hydrogen energy core equipment, energy protection equipment and chemical equipment.
The manufacturer highlights five features. An exclusive seam tracking system drives fully automated welding. Spot control and a protective gas system give bright, oxide-free welds on titanium and nickel. Workpiece deformation is described as minimal. The workspace is called extra-large. And one machine is said to handle multiple square electrolyser specifications.
The spec table lists a 2400 × 1250 mm welding area, a 12600 × 4600 × 3800 mm machine, four laser source codes in a 3000 - 6000 W band and a collimating and focusing welding head. The machine runs on 380 VAC at 50 Hz with compressed air at 0.5 - 0.7.
[1]Check your plates and frames against 2400 × 1250 mm
Buying guidance
Penta calls the workspace extra-large, and the figure behind that word is 2400 × 1250 mm. That is the full stated welding area. Penta lists no Z stroke, no maximum part height and no table load. The machine itself measures 12600 × 4600 × 3800 mm, roughly five times the length of the weld area, and nothing explains the rest of that length. It could hold a second station, a shuttle table, the source cabinet or extraction. A footnote says some specifications may vary because of physical constraints tied to machine dimensions, which suggests Penta can build the frame to other sizes.
List every welded component that will go under the head: bipolar plates, frames, end plates, flow fields or assembled stacks. Note the length, width, height and weight of each one and mark every seam. With that list Penta can tell you which parts suit the standard GAN 2412, and whether a longer or wider gantry turns into a custom build with its own price and lead time. Plan the clamping at the same stage, because the parts together with their fixtures set the space you really need.
[1]Will the seam tracking cope with your part tolerances?
Buying guidance
Penta credits an exclusive seam tracking system with making the welding fully automated. It publishes no sensor name, no working principle (laser line, camera or tactile), no list of joint types and no correction range. Those details decide whether the machine can absorb the variation in your stamped or machined parts.
Titanium and nickel are bright and reflect strongly, which makes optical tracking harder. Before you shortlist the machine, find out whether the system scans the seam before welding or corrects in real time, how far it can correct sideways and in height, the smallest gap and mismatch it picks up on your material, and what the machine does when it loses the seam. The most telling demonstration uses a part with deliberate fit-up errors at the limits of your drawing tolerances.
Programming matters as much as sensing. Penta says the machine suits multiple square electrolyser specifications. For each extra cell size, find out whether you only load a new program or also need new fixtures and a fresh tracking teach-in.
[1]Shielding gas for titanium and nickel
Buying guidance
Penta says its spot control and protective gas system produce bright, oxide-free welds on titanium and nickel. General metallurgy explains why that matters. Hot titanium picks up oxygen and nitrogen above a few hundred degrees, and a straw, blue or grey surface colour signals contamination that can cut ductility and corrosion resistance. On thin sections, gas on the front face is often too little. The hot metal trailing the pool and the root side may need cover as well.
Penta gives no description of the gas system. The usual designs are a coaxial nozzle, a trailing shield, back purge fixtures or a full gas chamber, and each one changes tooling cost and gas use. Settle a colour acceptance criterion for titanium welds before any trial, and agree early who supplies the purge fixtures for your plate geometry.
[1]Laser source and the single head option
Buying guidance
Penta offers four laser sources, coded FFRC-H, FFRC-SM, FFRQ and FFRSC, in a 3000 - 6000 W band. No code is paired with a power level, and Penta gives no key to what the codes mean. Read the band as the range Penta can offer, and have each quotation name one source with its wattage, chiller and optical fibre.
Only one head appears: a collimating and focusing welding head. Penta mentions no wobble or swing head and no wire feeder. That set-up generally suits tight lap or edge joints on thin sheet. If your seams have a varying gap or need filler, raise it at first contact, since a different head may be required. Spot size, focal length and the replacement interval for the protective window all belong in the offer, because spatter along long seams eats into the consumable budget.
Penta says workpiece deformation is minimal. Thin electrolyser plates can still bow under heat, so find out whether clamping or cooling is part of the supply and what flatness the supplier will commit to.
[1]Sign off on full-size components
Buying guidance
Appearance is only one part of an electrolyser weld. Agree the tests before ordering: leak or pressure tightness wherever a seam separates gas or electrolyte, flatness after welding, cross-sections or bend tests for penetration and porosity, and titanium surface colour. Weld one complete component of each size you plan to build, in production material, with the offered source and head and the supplier's own tracking and shielding set-up.
Log cycle time per component, each operator intervention, any re-welds and the gas used. Run the same parts again at factory acceptance and at site acceptance after installation, so the results line up. These runs are where Penta's statements on oxide-free welds and low deformation meet your real work.
Plan the site in parallel. The 12.6 m by 4.6 m outline needs floor space plus crane or forklift access for loading large plates. The machine needs compressed air at the printed 0.5 - 0.7 pressure and a 380 V 50 Hz supply. Penta lists no total power demand, so request it early for your electrical planning.
[1]Put these answers into the signed offer
Buying guidance
Most of the open technical points can be closed in the quotation itself, where every answer carries Penta's signature. For the frame, that means the Z stroke, maximum part height, table load, gantry accuracy and speed, and what fills the 12.6 m length. For the optics, it means the named source and wattage, the chiller, the fibre, the spot size and the focal length.
On tracking, Penta should state the sensor principle, correction range and behaviour on titanium and nickel. On shielding, it should describe the nozzle, trailing shield and back purge design, gas type and purity, flow rates and any oxygen monitoring. The air pressure unit is printed as "MPO"; have the offer restate the pressure in MPa, along with flow and air quality.
Close with the commercial scope: the cell sizes covered by the price, the change-over time between them, who designs the clamping and purge tooling, and the acceptance tests both sides agreed. A resized gantry should come with its own price and delivery date.
[1]Compare the complete configuration
Swipe the table sideways to read the quotation checks.
| Item | Published scope | Before accepting the quote |
|---|---|---|
| GAN 2412 gantry machine | Elevated overhead gantry with a 2400 × 1250 mm welding area inside a 12600 × 4600 × 3800 mm outline. [1] | Z stroke, maximum part height and table load; what occupies the rest of the machine length; gantry accuracy and speed. |
| Laser source | FFRC-H, FFRC-SM, FFRQ or FFRSC in a 3000 - 6000 W band. [1] | One named source and wattage, the chiller, and power stability data. |
| Collimating and focusing welding head | The only head type Penta lists. [1] | Spot size, focal length, protective window life, and whether a wobble head or filler wire can be added. |
| Seam tracking system | Penta calls it exclusive and publishes no technical data. [1] | Sensor principle, correction range, behaviour on reflective titanium and nickel, and what happens when the seam is lost. |
| Protective gas system | Penta links it to bright, oxide-free welds; the design is not described. [1] | Nozzle, trailing shield and back purge design, gas purity and flow, oxygen monitoring. |
| Fixtures for each cell size | Penta states the machine suits multiple square electrolyser specifications; fixtures are not mentioned. [1] | Which sizes the price covers, change-over time, and who designs the clamping and purge tooling. |
A useful brief for the supplier
Fill in each item. Ask the supplier to respond against the same specification so two offers can be compared.
- Drawings of each electrolyser component to be welded, with a seam map, dimensions, height and weight
- Material grades (titanium, nickel or others) and sheet thicknesses
- Leak tightness, flatness and titanium colour criteria you will accept
- Expected fit-up variation, so the seam tracking range can be matched to it
- Preferred source type and wattage within 3000 - 6000 W
- Shielding and back purge expectations, and who should supply purge fixtures
- Number of cell sizes to be programmed and fixtured at delivery
- Floor area, crane access, electrical capacity and compressed air available on site
Buyer questions
Can the GAN 2412 weld a complete electrolyser stack?
Penta lists a 2400 × 1250 mm welding area and gives no height. Plates and frames inside that footprint are the natural fit; a full stack depends on its height and weight. Send your stack drawings and ask Penta to state in writing which assemblies the standard machine accepts. [1]
Will titanium welds come out oxide-free?
Penta states that its spot control and gas system give bright, oxide-free welds on titanium and nickel, and it publishes no test results alongside that statement. Write a colour and mechanical acceptance criterion into the order and check it on welds made on your own parts. [1]
What unit applies to the air supply pressure?
The table prints 0.5 - 0.7 with the unit "MPO", which looks like a typing error for MPa. Have the quotation state the pressure, flow and air quality the machine needs. [1]
Is the 12.6 m machine length fixed?
A footnote says some specifications may vary because of physical constraints related to machine dimensions. Ask Penta whether the gantry and weld area can be resized and how that changes price and delivery. [1]
Which laser power should I order?
The band runs from 3000 to 6000 W across four source codes. Choose from your material grade and sheet thickness, and make sure the quotation names a single source and wattage. [1]
Sources
Figures come from the manufacturer's published data, checked on the date shown. Before ordering, ask for a written, model-specific answer on availability, certificates, delivery and warranty.
- Penta Laser GAN 2412 Square Electrolytic Cell Laser Welding Machine product page · Penta Laser (Zhejiang) Co., Ltd.
Manufacturer publication · Checked 2026-11-04
Penta's product page for the GAN 2412, with the introduction, feature list, technical table and application fields. Use it for the welding area, machine size, source codes, power band and utilities.
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