A 1.2 mm cold-rolled steel sheet sits on the rack in the workshop. By tomorrow morning it will be picked up by the laser cutter, and five days later it will become a self-service kiosk cabinet β the kind that stands in a shopping mall, a hospital lobby, or a hotel reception.
We've been making sheet metal cabinets and enclosures for self-service terminals for 15 years β vending machines, queuing-ticket machines, hospital check-in kiosks, gashapon machines. Today, instead of talking specs, let's just follow one cabinet through all 8 stations of its birth.
Many people think sheet metal work begins at the cutting machine. It doesn't. It begins on a computer screen.
When a customer's drawing comes in, our engineers run a manufacturability review: Is the sheet thickness right? Will that bend radius crack? Will the cooling vents block the internal wiring? Are the assembly tolerances clearly specified?
This step is free, but it's the most valuable one. Fixing a problem on the drawing costs minutes. Finding it after the first sample is made costs tens of thousands of yuan in tooling and one to two weeks of lead time.
Half of a cabinet's fate is decided at the drawing stage.
The laser cutter cuts the sheet into shape according to the unfolded pattern, holding tolerance within Β±0.5 mm.
Here's a detail outsiders rarely know: before cutting, the "developed length" must be calculated. Steel stretches when bent, so the length and width have to be compensated in advance. Get the math wrong by one number and the whole batch is scrap.
The cut edges have burrs, which workers buff off by hand. It looks trivial, but burrs left behind cause paint runs and surface particles later.
Flat sheet goes in, a three-dimensional structure comes out. A single vending machine cabinet takes anywhere from 20β30 to 50β60 bends.
Bending has two classic enemies:
That's why a reliable factory schedules production on "the same machine, the same tooling, the same sheet batch," minimizing variables. Bend tolerances of Β±0.5 mm are held right here.
Key insight: Sheet metal work is not fully automated. The feel of an experienced operator is still the core competitive advantage.
The bent parts are assembled and welded for structural strength. Spot welding or full seam welding depends on load requirements.
After welding, grinding is mandatory. An uneven weld seam becomes a visible "ridge" once painted; slag and pinholes left uncleaned will bubble out from the inside during curing.
At this station, the veteran worker's eye is the caliper.
Before entering the paint booth, parts go through pre-treatment: degreasing, derusting, rinsing, conditioning, phosphating, and drying. Skip any step and the best-looking paint will still peel.
Coatings are mainly powder coating (cured at high temperature β wear- and scratch-resistant, ideal for public environments) or liquid paint (richer color options, multi-color finishes).
Once coated, the cabinet has its "complexion." Is the color accurate? Is the surface even? Any sags or particles? This is the very first thing a customer checks at inspection.
After curing, logos, warning labels, and interface text are silk-screened on.
Then assembly begins: locks, hinges, screen mounts, cable routing points, tamper-proof structures β installed one by one. Only now does it truly become "a kiosk" rather than "a sheet metal part."
Anyone can make a single good unit. Making 500 units identical is the real dividing line.
| Inspection Stage | What It Checks |
|---|---|
| Incoming inspection | Is the sheet the right thickness? |
| In-process inspection | Bend angles spot-checked |
| Final inspection | Dimensions, appearance, assembly β all units |
Our three-check system isn't a plaque on the wall β it's a stack of inspection records.
Wiped down, film-protected, dust-bagged, reinforced with wooden crates or cartons, labeled to the customer's spec.
The moment it's loaded, the cabinet leaves the workshop for the integrator, the mall, the hospital, the hotel lobby β and starts its real job.
From drawing to shipping, a kiosk cabinet passes through 8 stations, dozens of processes, and at least 5 days.
We lay it all out not to make the process look complicated, but to make one point clear:
A cabinet's quality never depends on one brilliant step β it depends on whether any step dropped the ball.
Hangzhou Xuntengweiye Electronic Technology Co., Ltd. β founded in 2010, focused on sheet metal enclosures for self-service terminals for 15 years:
Come visit the factory and walk your own drawing through the line. Free manufacturability review on any drawing β let's talk when it fits.
Contact us for a free manufacturability review on your drawing.
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