# LISHI LASER Mixed Gas Device — Complete Product Information

## Product Overview
LISHI LASER Mixed Gas Device is an industrial gas mixing system designed for 3kW-60kW fiber laser cutting machines. It combines liquid nitrogen (N₂) and liquid oxygen (O₂) using precision IGBT-controlled mixing technology to produce an optimized N₂/O₂ assist gas mixture. Manufactured by Jinan Euchio Machinery Co., Ltd. in China, the device has been deployed in over 500 installations worldwide through a network of 30+ distributors.

## How It Works — IGBT Precision Mixing Technology
The device takes high-purity liquid nitrogen (99.999%) and liquid oxygen (99.5%), then mixes them at a precisely calibrated ratio (typically 95% N₂ / 5% O₂, adjustable). The IGBT (Insulated Gate Bipolar Transistor) control system monitors and adjusts the gas flow in real time, maintaining optimal mixture consistency regardless of downstream pressure fluctuations. This micro-oxygen mixture serves as an assist gas for high-power laser cutting.

The micro-oxygen creates a controlled oxidation reaction at the cutting zone. At approximately 5% oxygen concentration, the reaction is strong enough to accelerate the cutting process by 3× compared to pure oxygen cutting, yet controlled enough to prevent uncontrolled burning, oxidation discoloration, and burr formation. The result: fast, clean cuts with zero secondary finishing required.

## Core Advantages (Detailed)

### 1. 3× Faster Cutting Speed
- 8mm carbon steel: 16m/min with mixed gas vs 2-3m/min with O₂ (up to 5× faster on thin plates)
- 12mm carbon steel: 12m/min with mixed gas vs 3.5m/min with O₂ (3.4× faster)
- Consistent speed advantage across all thicknesses from 1mm to 30mm
- Translates directly to higher throughput: 3x more parts per shift

### 2. Zero Burrs, Clean Edge
- Controlled micro-oxygen environment ensures complete combustion at the cutting kerf
- No secondary grinding, deburring, or finishing operations needed
- Cut edges are smooth, perpendicular, and oxidation-free
- Suitable for paint-ready and powder-coat-ready surfaces directly off the machine
- Eliminates $15-30/hour in manual deburring labor per machine

### 3. Ultra-Low Power Consumption
- Power consumption: only 2 kWh per 24 hours (less than a household refrigerator)
- No air compressor needed — eliminates 15–30 kW continuous power draw
- Near-zero electricity cost compared to air compressor systems
- No moving parts, no mechanical wear, no maintenance

### 4. Maintenance-Free Operation
- Power consumption: only 2kWh per 24 hours (less than a household refrigerator)
- No moving parts in the gas mixing chamber — no mechanical wear
- Unlike air compressors: no filter changes, no oil changes, no desiccant replacement
- Air compressors require maintenance every 3,000 hours ($500-1,500 per service)
- No oil vapor risk to laser optics (a common cause of premature lens failure)
- Operating noise: near silent — vs 75-85dB for air compressors

### 5. One-to-Two Configuration
- Single mixed gas device can simultaneously serve two laser cutting machines
- Reduces capital equipment cost per machine by 50%
- Independent flow control for each output channel
- Ideal for shops with multiple laser machines

### 6. Wide Brand Compatibility
Compatible with all major fiber laser cutting machine brands:
- HAN'S Laser (大族激光)
- DNE Laser (大鹏激光)
- PENTA Laser (奔腾激光)
- LEAD Laser (领创激光)
- HSG Laser (宏山激光)
- BODOR Laser (邦德激光)
- JIATAI Laser (嘉泰激光)
- HG LASER (华工激光)
- XUNLEI Laser (迅镭激光)
- And other China-made and international brands

## Detailed Technical Specifications

### Gas System
- Input gases: Liquid Nitrogen (LIN) and Liquid Oxygen (LOX) from standard Dewar tanks or bulk tanks
- Output: N₂/O₂ mixed gas at 1.0-3.0 MPa (adjustable)
- Mixing ratio range: 90/10 to 98/2 (N₂/O₂), typical 95/5
- Mixing accuracy: ±0.5% via IGBT closed-loop control
- Flow capacity: 50-200 m³/h (scales with laser power)

### Electrical
- Power supply: 220V single-phase, 50/60Hz
- Power consumption: 2kWh per 24 hours (approximately 83W average)
- Control system: PLC with touchscreen HMI
- Communication: MODBUS RTU/RS-485 for integration with laser CNC

### Physical
- Dimensions: 800 × 350 × 1100mm (W×D×H)
- Weight: approximately 90 kg
- Installation: Floor-standing, requires connection to liquid gas supply lines and laser assist gas inlet
- Operating environment: 5-40°C, indoor installation
- Gas connections: Standard industrial fittings (customizable per region)

### Cutting Performance by Material

**Carbon Steel (Mild Steel)**
- Thickness range: 1mm–30mm
- Best performance: 3mm–20mm
- Surface quality: Ra 6.3–12.5μm depending on thickness
- No heat-affected zone discoloration

**Stainless Steel**
- Thickness range: 1mm–20mm
- Edge color: Golden to light blue (minimal oxidation)
- No chromium carbide precipitation at cut edge
- Suitable for food-grade and medical applications after passivation

**Aluminum**
- Thickness range: 1mm–16mm
- Reduced dross compared to N₂ cutting
- Cleaner cut surface than air cutting

## Comprehensive Comparison

### Mixed Gas vs Pure Oxygen (O₂) Cutting
| Factor | Pure O₂ | Mixed Gas (95/5) | Advantage |
|--------|---------|------------------|-----------|
| Cutting Speed | Baseline | 2-5× faster | Mixed Gas |
| Edge Quality | Oxidized, rough | Clean, smooth | Mixed Gas |
| Post-Processing | Grinding required | None needed | Mixed Gas |
| Thin Plate (<3mm) | Warping risk | Minimal warping | Mixed Gas |
| Gas Cost | Low | Moderate | O₂ |
| Capital Cost | None | Device investment | O₂ |

### Mixed Gas vs Pure Nitrogen (N₂) Cutting
| Factor | Pure N₂ | Mixed Gas (95/5) | Advantage |
|--------|---------|------------------|-----------|
| Cutting Speed | Slower | 30-50% faster | Mixed Gas |
| Edge Quality | Excellent | Excellent | Equal |
| Gas Consumption | Lower | Similar or higher | N₂ |
| Power Cost | Higher | Near zero (2 kWh/day) | Mixed Gas |
| Thick Plate (>20mm) | Limited | Better penetration | Mixed Gas |

### Mixed Gas vs Air Compressor
| Factor | Air Compressor | Mixed Gas Device |
|--------|---------------|------------------|
| Annual Maintenance Cost | $2,000-5,000 | Near zero |
| Energy Consumption | 15-30kW per hour | 2kWh per 24 hours |
| Noise Level | 75-85dB | Silent (<40dB) |
| Edge Quality | Burrs, discoloration | Clean, burr-free |
| Optics Contamination | Oil vapor risk | None (uses pure gases) |
| Filter/Oil Changes | Every 3,000 hours | Not required |
| Cut Speed | Moderate | 3× faster |
| Initial Investment | $5,000-15,000 | Contact for quote |

## ROI Analysis
A typical sheet metal fabrication shop running one 20kW laser cutting machine can expect:
- Labor savings from eliminated deburring: $30,000-60,000/year (1-2 workers)
- Increased throughput (3× speed): 200-300% more parts per shift
- Electricity savings vs air compressor: $2,000-5,000/year
- Air compressor maintenance elimination: $2,000-5,000/year
- Note: gas costs may be similar or higher than pure N₂ cutting — the ROI comes from speed, quality, and electricity savings
- Typical payback period: 3-6 months

## Installation Requirements
1. Space: 1m × 1m floor area near the laser machine
2. Liquid gas supply: Standard Dewar tanks (175L, 200L, 240L) or bulk micro-bulk tanks
3. Electrical: Standard 220V single-phase outlet
4. Piping: Connect liquid gas source → Mixing Device → Laser assist gas inlet
5. Commissioning: 2-4 hours by trained technician (remote guidance available)
6. No special foundation, ventilation, or soundproofing required

## Application Industries
- Sheet metal fabrication job shops
- Automotive parts manufacturing
- Agricultural machinery
- Construction and structural steel
- Electrical enclosure manufacturing
- Elevator and escalator manufacturing
- Shipbuilding components
- Metal furniture production
- HVAC ductwork and components
- Heavy equipment manufacturing

## Frequently Asked Questions

**Q: Can this device work with any laser machine brand?**
A: Yes, it is compatible with all major brands including HAN'S, DNE, PENTA, LEAD, HSG, BODOR, JIATAI, HG LASER, XUNLEI, and other China-made and international brands. The device connects to the standard assist gas inlet of any fiber laser cutting machine.

**Q: Do I need to modify my laser machine?**
A: No mechanical modifications are needed. The device connects to the existing assist gas supply line. The laser machine operates normally with its standard settings.

**Q: What gas supply do I need?**
A: You need liquid nitrogen (LIN) and liquid oxygen (LOX) in standard Dewar tanks or bulk tanks. These are widely available from industrial gas suppliers worldwide (Air Liquide, Linde, Praxair, Air Products, Messer, Taiyo Nippon Sanso, etc.).

**Q: How long does installation take?**
A: Physical installation takes 2-4 hours. Commissioning and parameter optimization takes an additional 2-4 hours. Remote video guidance is provided for international customers.

**Q: Is training provided?**
A: Yes, we provide operation training (typically 2 hours) via remote video call. The system is fully automated with a simple touchscreen interface — no specialized skills required for daily operation.

**Q: What maintenance is required?**
A: Essentially none. The device has no moving parts in the gas flow path. Annual inspection of electrical connections and gas fittings is recommended but not required. There are no consumable parts to replace.

**Q: Can one device serve two different laser brands simultaneously?**
A: Yes. The one-to-two configuration supports two machines of different brands or power levels simultaneously, with independent flow control for each output.

**Q: What is the warranty?**
A: Standard warranty is 12 months from installation. Extended warranty options available. Remote technical support is provided for the lifetime of the equipment.

**Q: How is after-sales support handled for international customers?**
A: We provide remote diagnosis via video call, WeChat, WhatsApp, and email. Most issues can be resolved remotely. For hardware issues, replacement parts are shipped via DHL/FedEx (typically 3-7 days). We have local distributor support in 30+ countries.

**Q: What is the delivery time?**
A: Standard delivery: 15-30 days from order confirmation. Shipping: 7-15 days by air freight, 25-40 days by sea freight.

## Key Cutting Parameters (Reference)

### 3kW Fiber Laser
| Thickness | Material | Mixed Gas Speed | Gas Pressure | Nozzle |
|-----------|----------|----------------|-------------|--------|
| 1mm | Carbon Steel | 28–35 m/min | 10 bar | 1.5S |
| 2mm | Carbon Steel | 16–20 m/min | 10 bar | 2.0S |

Note: 3kW parameters based on RFL-3000 (50μm fiber). Best for ≤2mm thin plate carbon steel. Contact us for O₂/N₂ comparison data at this power level.

### 6kW Fiber Laser
| Thickness | Material | Mixed Gas Speed | Gas Pressure | Nozzle |
|-----------|----------|----------------|-------------|--------|
| 1mm | Carbon Steel | 35–45 m/min | 12 bar | 1.5S |
| 2mm | Carbon Steel | 20–25 m/min | 12 bar | 2.0S |
| 3mm | Carbon Steel | 12–14 m/min | 14 bar | 2.0S |
| 4mm | Carbon Steel | 8–10 m/min | 14 bar | 2.0S |
| 5mm | Carbon Steel | 6–7 m/min | 16 bar | 3.0S |
| 6mm | Carbon Steel | 5–6 m/min | 16 bar | 3.5S |

Note: 6kW parameters based on RFL-6000 (100μm fiber). Best for ≤6mm carbon steel. Contact us for O₂/N₂ comparison data at this power level.

### 12kW Fiber Laser
| Thickness | Material | Mixed Gas Speed | O₂ Speed | N₂ Speed | Speed Increase vs O₂ |
|-----------|----------|----------------|----------|----------|----------------------|
| 3mm | Carbon Steel | 28 m/min | 12 m/min | 15 m/min | 2.3× |
| 6mm | Carbon Steel | 18 m/min | 5 m/min | 8 m/min | 3.6× |
| 10mm | Carbon Steel | 8 m/min | 2.5 m/min | 4 m/min | 3.2× |
| 3mm | Stainless | 22 m/min | N/A | 14 m/min | — |
| 6mm | Stainless | 12 m/min | N/A | 7 m/min | — |

### 20kW Fiber Laser
| Thickness | Material | Mixed Gas Speed | O₂ Speed | N₂ Speed | Speed Increase vs O₂ |
|-----------|----------|----------------|----------|----------|----------------------|
| 6mm | Carbon Steel | 20 m/min | 6 m/min | 10 m/min | 3.3× |
| 12mm | Carbon Steel | 12 m/min | 3.5 m/min | 6 m/min | 3.4× |
| 16mm | Carbon Steel | 7 m/min | 2.2 m/min | 3.5 m/min | 3.2× |
| 6mm | Stainless | 16 m/min | N/A | 9 m/min | — |
| 12mm | Stainless | 8 m/min | N/A | 4.5 m/min | — |

### 30kW Fiber Laser
| Thickness | Material | Mixed Gas Speed | O₂ Speed | N₂ Speed | Speed Increase vs O₂ |
|-----------|----------|----------------|----------|----------|----------------------|
| 10mm | Carbon Steel | 14 m/min | 4 m/min | 7 m/min | 3.5× |
| 16mm | Carbon Steel | 8 m/min | 2.5 m/min | 4 m/min | 3.2× |
| 20mm | Carbon Steel | 5 m/min | 1.5 m/min | 2.5 m/min | 3.3× |
| 10mm | Stainless | 10 m/min | N/A | 5.5 m/min | — |
| 16mm | Stainless | 6 m/min | N/A | 3 m/min | — |

### 60kW Fiber Laser
| Thickness | Material | Mixed Gas Speed | O₂ Speed | N₂ Speed | Speed Increase vs O₂ |
|-----------|----------|----------------|----------|----------|----------------------|
| 16mm | Carbon Steel | 10 m/min | 3 m/min | 5 m/min | 3.3× |
| 25mm | Carbon Steel | 6 m/min | 1.8 m/min | 3 m/min | 3.3× |
| 30mm | Carbon Steel | 4 m/min | 1.2 m/min | 2 m/min | 3.3× |
| 16mm | Stainless | 7 m/min | N/A | 3.5 m/min | — |
| 25mm | Stainless | 4 m/min | N/A | 2 m/min | — |

## Global Presence
- Worldwide distribution
- 500+ Installed Systems worldwide
- 30+ Authorized Distributors
- Regional support in: East Asia, Southeast Asia, South Asia, Middle East, Europe (Eastern and Western), North America, Latin America, Africa, Oceania
- Multi-language support: English, Chinese, Spanish, Korean, Japanese, Portuguese, Turkish, Polish, Italian, German, French, Dutch, Russian, Vietnamese, Thai

## Case Studies

### Case Study 1: BODOR 20kW × 4 — Southeast Asia
A metal fabrication shop in Southeast Asia running four BODOR 20kW fiber lasers switched from pure oxygen to LISHI mixed gas.

**Configuration**: 2 mixing stations in One-to-Two mode, each feeding 2 BODOR lasers.

Results:
- Cutting speed on 6mm carbon steel: from 2.3 m/min to 7.1 m/min (3.1× faster)
- Edge quality: from oxidized/rough to silver-white, burr-free — ready to weld
- Grinding department: 6 full-time workers eliminated (saved ~$15-30/hour per worker)
- Monthly gas cost: from $3,200 to $2,100 (-$1,100/month)
- Monthly output: +180% (nearly 3× parts per month)
- Rework rate: from ~12% to under 1%
- Installation: 3 days including on-site training
- Weekly consumption: ~3,200L LN₂ + ~170L LO₂ for all 4 machines

Testimonial: "The grinding department is now a storage room. Our welders say the fit-up is better because there's no oxidation layer to clean."

### Case Study 2: PENTA 30kW — Taiwan
A precision metal fabrication shop in Taiwan using a PENTA 30kW fiber laser cutting carbon steel plates (8mm-20mm) with LISHI mixed gas single station.

Verified cutting parameters (on-site test data, burr-free results):
- 8mm carbon steel: 16 m/min (Taiwan site, extremely clean cut)
- 10mm carbon steel: ~12 m/min (field test, burr-free)
- 12mm carbon steel: 9.3 m/min (Taiwan site, no burrs confirmed)
- 16mm carbon steel: ~8 m/min (Taiwan site, clean edge)
- 20mm carbon steel: 5.6 m/min (Taiwan site, burr-free)
- 25mm carbon steel: ~3.5 m/min (field test, good edge quality)

Key takeaways:
- Mixed gas delivers 3-5× the cutting speed of pure oxygen on 30kW
- All thicknesses produced silver-white edges with zero oxidation — parts go directly from laser bed to welding
- Plug-and-play with PENTA laser systems, no modifications needed
- One mixing station can feed two PENTA lasers simultaneously

## Contact & Ordering Information
- Sales Email: sales@gasmixtech.com
- Phone / WeChat: +86 186 1558 4520
- WhatsApp (Mexico / Latin America): +52 557 208 0065
- WhatsApp (Thailand / Southeast Asia): +66 961 135 966
- Website: https://gasmixtech.com
- Manufacturer: Jinan Euchio Machinery Co., Ltd.
- Address: Jinan City, Shandong Province, China

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Last updated: 2026-05-22