The preparation and installation condition of fiber laser cutting machine-Tulsa

Power quality of installation condition

• Three-phase unbalance degree <2.5%, line voltage fluctuation <5%

Ground protection

• The machine tool is ground separately; the electric control cabinet is ground separately. The laser is ground separately; the grounding resistance is less than 4Ω.

The grounding device should made of steel. The steel pipe with a diameter of 50mm or the angle steel with a diameter of 50mm×50mm×5mm. And the steel pipe grounding body should be arrange vertically, and an appropriate amount of salt water should pour to ensure a good grounding effect. Use a copper core cable greater than or equal to 10 square meters as the grounding lead. The line and the grounding body connect by M12 bolts, and the bolt connection part should paint with anti-corrosion paint.

The grounding part of electrical equipment should connect to the grounding trunk with a separate grounding wire.

In the grounding system, the grounding resistance is less than or equal to 4 ohms. And the repeated grounding resistance is less than or equal to 10 ohms.

The grounding resistance should measure regularly (once every quarter). If the resistance value exceeds the standard, the cause should found out and rectified immediately.

Operating materials of installation condition

The gas quality complies with ISO 8573-1:2010; solid particles-class 2, water-class 4, oil-class 3.

Nitrogen: requires a minimum purity of 99.9% for cutting stainless steel, and the concentration is less than 100ppm.

Oxygen: requires a minimum purity of 99.9% for cutting carbon steel, and the concentration is less than 25 100ppm.

Compressed air: it is require to be clean, free of water, oil and other impurities. Use for thin carbon steel, thin stainless steel, etc. where conditions permit. (The key parameters of the air compressor shall not lower than the following.

Standard: Please choose screw air compressor as far as possible. Its volumetric flow is relate to the laser power. The maximum working pressure is ≥1.6mpa, the pressure dew point is 2~8℃, the filtration accuracy is 0.01μm. And the oil content of the outlet is ≤0.003ppm).

Lubricant: Use liquid lubricating oil that meets the total standard, the label is 120.

Cooling water: Cooling circulating water requires the use of high-quality mineral-free purified water, distilled water or deionized water