Fully Automatic Laser Cutting Production Line, Fiber Laser ...

Equipment Introduction

The fully automatic laser blanking line with fiber laser cutters is an efficient blanking production line developed for the sheet metal industry. It is especially suitable for occasions characterized by large batch sizes, high quality, and continuous operations. The three-in-one feeder, driven by a motor and roller through a servo control system, ensures greater transmission precision and more consistent feeding. An advanced specialized laser generator is employed, along with a customized cutting head and a high-speed servo drive control system. The cutting speed is 20% higher than similar products, leading to improved production efficiency. The innovative optimized design allows for a high-power yet low-energy consumption production mode, achieving a 15% reduction in energy use compared to comparable products, resulting in enhanced cost savings.

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Advantages and Disadvantages of Using a Fiber Laser

Fiber lasers have several advantages compared to conventional laser heat sources, making them a favorable option in many applications:

1. Fiber lasers generate a beam within the fiber itself, removing the need for an external optical medium for beam delivery. This results in exceptional stability and ease of maintenance.
2. These lasers provide incredibly high optical gain, capable of generating kilowatt levels of continuous output power.
3. With a power conversion rate of 30-50%, fiber lasers outperform CO2 lasers, which have a rate of only 10-15%, making them far more energy-efficient.
4. Thanks to their focused narrow beams, fiber lasers ensure high accuracy even in complex designs, leading to clean cuts without burrs, rough edges, or thermal distortion.
5. The tiny core of the fiber produces a high-quality, straight optical beam with less diffraction compared to other laser technologies.
6. Unlike CO2 lasers, fiber lasers do not require routine maintenance such as mirror replacements or adjustments as they have no moving parts.
7. These lasers consume less power, resulting in lower operational costs overall.

However, fiber lasers do have some disadvantages:

1. Typically, fiber laser cutters have higher component costs.
2. Replacing the delivery fiber can be challenging since it cannot be separated from the source.

Fiber Laser Applications

The flexibility of fiber lasers makes them applicable across a range of fields:

1. Laser Marking: Ytterbium-doped fiber lasers with their specific nm emission wavelength are ideal for laser marking tasks, leaving sharp, durable imprints on metal and plastic surfaces. They can be tailored for quick production cycles and can be deployed in either manual or automated setups.
2. Laser Cleaning: Fiber lasers excel in removing rust, paint, and oxides from metal surfaces through an efficient laser cleaning process that can be automated based on manufacturing line conditions.
3. Laser Welding: The welding sector benefits greatly from fiber lasers, which enable faster speeds and enhanced precision compared to traditional methods while minimizing distortion and maximizing quality.
4. Laser Cutting: Fiber lasers achieve excellent edge quality and handle complex cuts exceptionally well, making them the preferred choice for items requiring tight tolerances.

How The Power of a Fiber Laser Scales

The scaling of fiber lasers' power is limited by phenomena such as Brillouin and Raman scattering, as well as the short lengths of these lasers. Nonlinear fiber configurations are necessary for many components, including amplifiers and switches.

Two classes of nonlinear effects can occur in optical fibers. The first stems from the Kerr effect, which is due to the intensity-dependent behavior of the medium's refractive index. This results in one of three effects depending on the input signal: cross-phase modulation (CPM), self-phase modulation (SPM), or four-wave mixing (FWM).

The second nonlinear effect arises when energy transfers from the optical field to the nonlinear medium through inelastic scattering. This produces effects like stimulated Brillouin and stimulated Raman scattering.

Alternatives to Fiber Lasers

There are also alternative cutting technologies to consider:

1. Gas/CO2 Lasers: With a wavelength of 10.6 mm, CO2 lasers cut through thicker materials more effectively than fiber lasers, producing a smoother finish. They are capable of cutting materials such as acrylic, leather, plastics, glass, and wood.
2. Crystal Laser Cutters: These operate on shorter wavelengths, capable of cutting through thicker and sturdier materials. However, their high power leads to faster wear on components, making them popular for metals, ceramics, and plastics.

Materials that a Fiber Laser Can Cut

Fiber lasers versatilely cut the following materials:

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1. Metals such as carbon steel, copper, brass, stainless steel, titanium, and aluminum.
2. Plastics including acrylic, polyoxymethylene, and lucite.
3. Graphite.

However, fiber laser cutters are unsuitable for certain materials such as glass fiber, leather, ceramics, polycarbonate, ABS, HDPE, and some types of plastic foams.

The Main Types of Fiber Lasers

Fiber lasers are categorized based on their laser source (thulium-doped, erbium-doped, or ytterbium-doped), operational mode, and power level.

How To Classify Fiber Laser Types

Fiber lasers may be classified using the following criteria:

1. Laser Source

The chemical used for doping the laser source influences the wavelength of the light produced. Examples include thulium-doped, erbium-doped, and ytterbium-doped fiber lasers, each suitable for specific applications based on their distinct wavelengths.

2. Mode of Operation

Different laser configurations release beams in various manners. For instance, lasers can be "q-switched," "mode-locked," or "gain-switched" for high peak powers and can also be pulsed at specific rates.

3. Mode

This refers to the core size of an optical fiber, which is vital for laser travel. Multi-mode lasers usually have core widths from 50 to 100 micrometers, while single-mode lasers typically lie between 8 and 9 micrometers, with single-mode lasers offering better beam quality.

4. Laser Power

The laser's average power, measured in watts, defines its capability. High-power lasers deliver more energy quickly compared to their low-power counterparts.

The Parts of a Fiber Laser Machine

A fiber laser machine relies on a built-in fiber laser system to operate, and its core components include:

1. Laser source
2. Laser cutting head
3. Servo motor
4. Cooling device
5. Air cutting system
6. Laser host (bed, beam, table, and Z-axis system)
7. Control system
8. Stabilizer

What Are the Types of Fiber Laser Machines?

Table 1 lists some of the most prominent fiber laser marker and engraving machines on the market.

Contact us to discuss your requirements for the Single Table Fiber Laser Cutting Machine. Our knowledgeable sales team is here to help you find the best options tailored to your needs.