What Advantages Does Laser Cutting Have Over Other More Conventional Cutting Methods?

What Advantages Does Laser Cutting Have Over Other More Conventional Cutting Methods?

Laser cutting offers a huge number of benefits over other more conventional forms of cutting:

  1. laser cuttingLaser cutting is a non-contact process, and so there is minimal damage caused to the material you are working with and associated moving parts
  2. Laser cutting has low maintenance costs and only needs inexpensive replacement parts
  3. The laser cutting process helps to dramatically reduce material wastage
  4. One laser cutting setup is capable of working with multiple materials and applications
  5. It is much safer using laser cutting than other processes as the beam is enclosed within a light box
  6. You are offered total control with the beam intensity, heat output and duration when undertaking a laser cutting process, making this a highly reliable process

These are just some of the many advantages of laser cutting. These benefits have led to laser cutting being used in numerous industries, including the automotive, aerospace, electronics, semi-conductor and medical industries.

 

More info:
Company Name: FeiYue Digital Technology Co., Ltd
Address: No.323 Central Road, Nanjing, Jiangsu, China
Tel: 86-025-86628894
Fax: 86-025-86628894
E-mail: sales@subli-star.com
Web: www.subli-star.com
Whatsapp: +86 18351865850

WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF LASER CUTTING?

WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF LASER CUTTING?

Laser cutting, as the name may suggest, is the process of cutting a material using a laser beam. This can be done to either trim down a material or to help cut it into complex shapes that more conventional drills would struggle with. Now, let’s see some of the advantages and disadvantages that comes with this technology.
laser cutting1. Advantages Of Laser Cutting
1) It is easier to keep the work-piece in the right position.
2) Short obtained by laser cutting doesn’t take long and are extremely accurate. The whole cutting process is easily achieved in less time compared to traditional scissors.
3) As the section is produced, there isn’t direct contact of the work-piece with a cutting tool, lowering the risk of contaminating material.
4) In traditional separation process, the heat generated during the process of cutting usually melts the material. In laser cutting, the heat area is very small, reducing the possibility of material deformation.
5) The laser cutting machines require less energy for cutting sheet metal.
6) The laser cutting technology can be used to cut wide range of materials like wood, ceramics, plastic, rubber and certain metals.
7) Laser cutting is amazingly versatile technology and can be used to cut or burn simple to more complex structures in one piece.
8) One or two cutting machines are able to be used in the work of several other cutting machines.
9) Laser cutting process is easily controlled by computer programs, which makes it very precise while saving considerable amount of work.
10) Because the laser cutting machine doesn’t require human intervention, except for inspections and repairs, the frequency of injuries and accidents is very low.
11) Laser cutting machine has high level of efficiency and required design replicas are exact copies of each other.
laser cutting2. Disadvantages Of Laser Cutting
1) Efficiency and power consumption depends on the type of section that need to be carried out and nature of the laser. Usually, laser cutting have high energy consumption.
2) Laser cutting of plastic components can be expensive because when exposed to heat, plastic emits gas. For this reason, the laser cutting service provider should have well-ventilated room, which is quite expensive. Also, the gases released during the process of cutting plastic can be harmful and toxic.
3) Not all types of metals can be cut with laser cutting. For example, metals like copper and aluminum can’t be cut using this technology.
4) Production rate isn’t consistent. All depends on the type of material used, the thickness of the work-piece and the nature of laser cutting.
5) Setting of the temperature and the distance laser can lead to the combustion of some materials.
6) Human intervention is required just in case of repairs and trial runs. While these actions, worker comes in close contact with the leaser beam, which can cause burns.
Five elements affecting the cutting quality of CO2 lasers

Five elements affecting the cutting quality of CO2 lasers

Lasers are the heart of laser equipment and play a decisive role in the quality of laser cutting. A good laser should have the ideal mode, stable power and other elements. There are many types of lasers, and they can be defined differently from different angles. Different from the medium of excitation, it can be roughly divided into solid lasers and gas lasers, which use different solids or gases as the medium, for example, the earliest laser uses ruby as the medium. The mainstream laser currently used for laser cutting are CO2 lasers, followed by YAG lasers. YAG laser has the characteristics of high photoelectric conversion efficiency and small volume, but its application is greatly limited due to its fast loss of energy pump source and high maintenance cost. The use of carbon dioxide lasers makes it easier to obtain the ideal laser mode and higher energy, coupled with stable performance and short downtime, which is widely used in the cutting of various materials.


Let us talk about some factors that affect the cutting quality of CO2 lasers.

1: Excitation mode. The carbon dioxide laser generates laser light by exciting carbon dioxide gas with an electrode, and can be classified into direct current excitation and radio frequency excitation according to the installation position of the metal electrode.

2: Laser frequency. The laser output is divided into pulse output and continuous output. The laser used for cutting and welding mainly adopts pulse output mode. The pulse frequency mainly affects the cutting speed and the roughness of the slit. To obtain high-speed cutting, high frequency is indispensable. At present, most manufacturers produce carbon dioxide lasers with frequencies below 5000 Hz.

3: beam divergence angle. From a strict point of view, the beam divergence angle is not part of the laser part, but since the mode of the laser has a great influence on the far-field divergence angle, we will discuss it here. The influence of the beam divergence angle on the cutting quality is reflected in the width and slope of the slit. The smaller the divergence angle, the narrower the slit width, and the smaller the slope, the higher the quality.

4: Laser mode. It is one of the most important indicators for measuring laser quality. Can be divided into single mode, basic mode and multimode. The fundamental mode is both TEM00 mode, and its index on the X and Y axes is 0, so it is an ideal dot. The laser with TEM00 mode can obtain the smallest beam diameter, and the smallest slit and faster cutting speed can be obtained in the cutting process because of its small spot size. The multimode is a non-zero index in the XY direction, and its beam quality is poor, and it is generally used only for welding and not for cutting.

5: Laser power. Including peak power, energy stability and other factors. Different power can be cut through the thickness of the metal sheet. For example, a 4KW laser can cut 20mm thick carbon steel, or 15mm stainless steel, 10mm aluminum alloy; and 5KW or more laser can cut 25mm thick carbon steel, stainless steel up to 20mm. Another indicator of power is power stability, excellent cutting quality, and must be excellent throughout the cut. Long-term production is also a very important test for lasers. DC-excited lasers have attenuated power during long-term operation due to electrode ablation. In addition, since some of the vacuum pumps and turbo pumps of the laser are lubricated with lubricating oil, the lubricating oil contaminates the laser cavity and shortens the life of the laser.


More info:

Website: www.sublistarlaser.com

Company Name: Fei Yue Digital Technology Co.,LTD

Tel: 86-025-86628894

E-mail: sales@sublistarlaser.com

Address: Central Road 323, Nanjing, Jiangsu, China