Ascent Laser Mold Repair Systems
The price depends on the laser source
Contact us for a quote. Prices are in U.S. dollars. For Canada, the price is calculated in Canadian dollars at the exchange rate when the order is placed. Shipping to Canada is from Toronto, Ontario, and within the USA from Buffalo, New York, or Mount Sterling, Kentucky.
Ascent Equipment offers the following laser sources for mold repair:
- 200W and 400W YAG lasers
- 150W and 300W QCW lasers
- 1500W and 3000W fiber lasers
See it in action
A QCW Mold Repair Laser is a precision laser welding system designed specifically for repairing molds, dies, tooling, and precision metal components by adding weld material with minimal heat distortion.
What Does QCW Mean?
QCW = Quasi-Continuous Wave
A QCW laser operates between a traditional pulsed laser and a continuous-wave (CW) fiber laser:
- High peak power for deep penetration
- Low average heat input
- Minimal distortion and warping
- Excellent control for precision repairs
- Ideal for mold steel, tool steel, stainless steel, copper alloys, and aluminum
How It Works
The operator uses a microscope or camera system, fine filler wire (0.2–0.8 mm), a precision XY table, and the QCW laser beam. The laser melts a small area of the mold while simultaneously fusing filler material to rebuild worn or damaged surfaces.
Common Mold Repair Applications
- Worn mold edges
- Chipped corners
- Flash line repair
- Mold cavity restoration
- Gate repairs
- Ejector pin damage
- Engraving corrections
- Surface defect repair
Typical Specifications
- Laser Power: 300W / 400W (peak power 3000W / 4000W)
- Laser Type: QCW Fiber Laser
- Wavelength: 1080 nm
- Water-cooled source
- Motorized XYZ work platform
- Microscope viewing system
- Joystick control
Industries Using QCW Mold Repair Lasers
- Plastic injection molding
- Automotive tooling
- Die casting
- Aerospace components
- Medical device manufacturing
- Precision machining
- Stamping dies
- Sign industry fixture repair
Why QCW Instead of a Handheld Fiber Laser?
For mold repair, QCW systems provide microscopic precision, stable weld pool control, the ability to repair deep cavities, very low heat input, a better cosmetic finish, and less post-machining and polishing.
A QCW mold repair laser is a high-precision tool and mold-repair system, while a handheld fiber laser welder is a fabrication and production welding machine for stainless steel, aluminum, and sheet-metal assemblies.
The Difference Between a YAG and a QCW Fiber Mold Repair Laser
QCW fiber technology is the modern replacement for traditional Nd:YAG mold repair systems.
Technology Comparison
| Feature | YAG Mold Repair | QCW Fiber Laser |
|---|---|---|
| Laser Medium | Nd:YAG crystal | Fiber laser |
| Wavelength | 1064 nm | 1080 nm |
| Beam Delivery | Mirrors and optics | Fiber optic cable |
| Efficiency | 3–5% | 25–40% |
| Maintenance | High | Low |
| Lamp Replacement | Required | None |
| Cooling | Large water chiller | Smaller chiller |
| Reliability | Moderate | Excellent |
| Electrical Consumption | High | Lower |
Welding Performance
YAG Mold Repair Laser
Traditionally used for plastic injection mold repair, die repair, tool steel repair, and precision build-up welding.
Advantages: Very smooth weld appearance, excellent microscopic control, proven technology.
Disadvantages: Slower welding speed, lower efficiency, frequent flashlamp replacement, higher operating costs.
QCW Fiber Mold Repair Laser
Advantages: Higher peak power, deeper penetration, faster welding, more stable output, lower heat input, better energy efficiency, longer service life.
Disadvantages: Higher initial investment (although prices have fallen dramatically).
Heat Input
QCW systems create a smaller heat-affected zone than YAG systems — less polishing required, less distortion, and better dimensional accuracy.
Maintenance Costs
YAG — requires regular replacement of flash lamps, reflectors, and optical components, plus cooling system maintenance. Typical lamp life: 500,000–2,000,000 pulses.
QCW Fiber — typical fiber source life: 50,000–100,000 hours. No flash lamps to replace.
Mold Repair Quality
For very fine mold work (0.1–0.3 mm welds), both systems can produce excellent results. For larger repairs and build-up welding, QCW generally wins due to higher peak power, better penetration, and a faster deposition rate.
Typical Machine Configuration
Traditional YAG Mold Welder: Large cabinet, microscope, X-Y-Z table, 200–400W average power.
Modern QCW Fiber Mold Welder: Fiber source, higher efficiency, smaller footprint, better reliability, often 1500W–4000W peak power.
If you are introducing a mold repair system today, we recommend QCW fiber technology:
- Lower maintenance cost — no flash lamp replacement
- Better electrical efficiency
- Faster welding speeds and higher reliability
- Easier service support
- Technology preferred by most new mold shops
YAG systems are still found in older tool rooms, but most new mold repair installations are moving toward QCW fiber-based machines for better performance and a lower cost of ownership over the machine's life.
Warranty and support
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