Laser cutting is popular for its high-precision cutting performance and efficiency. One crucial component among the consumable parts is the Laser ceramics. It transmits electrical signals from the nozzle to the transmission line of the laser head. Over time, Laser ceramics can lose their integrity and the signal output becomes unstable. As a result, the cutting performance gets reduced.
To ensure precision cuts and prevent deformation of the sheet, you need a high-quality Laser ceramics. In this guide, we will give you a detailed idea of how Laser ceramics work, when they need replacement, and how to choose the right type of Laser ceramics for your needs. Let’s get into it.
What Is a Laser Ceramics?
A Laser ceramics is a consumable part of fiber laser cutting machines. It is comprised of three parts: ceramic body, stainless steel parts, and copper pin. The ceramic body works as an insulator to protect the laser head. The stainless steel parts are used for transmitting electrical signals to the copper pin.
The signal should be stable so that the machine can optimize itself for the best cutting performance. But as Laser ceramics get older, the contact between the copper pin and the stainless steel parts gets compromised. Besides regular wear, damage to the Laser ceramics can also impact the contact.
As a result, the signal becomes unstable. So, the cutting performance won’t be as desired. Sometimes, the signal can be completely broken. The machine will stop in this case. To maintain cutting accuracy and efficiency, it is important to choose a good Laser ceramics for your laser cutting machine.
Why Are Laser Ceramics Used in Laser Cutting Machines?
Laser ceramics serve three crucial purposes in laser cutting. Here are the reasons behind using a Laser ceramics.
It Optimizes the Focal Length
When working with a sheet that has varying thicknesses, adjusting the focal length is necessary. A Laser ceramics helps in this case to optimize the focal length according to the characteristics of the sheet under the machine.
It Improves Beam Quality
A uniform beam is essential for precision cuts. As the Laser ceramics has low thermal expansion, it can withstand higher temperatures generated in the process. So, the laser beam stays stable while cutting and ensures the cuts are very precise.
It Protects the Lens
The thick Laser ceramics also works as a protector for the lens. Molten metal or other debris can’t reach the lens area, so the cutting head remains effective for a longer period.
Benefits of Using Laser Laser Ceramics
Laser ceramics have multiple benefits. Take a look at a few of them.
· Among the consumable components, Laser ceramics are highly wear-resistant. So, they won’t easily break down if you choose a good quality Laser ceramics.
· A lot of thermal energy is produced while cutting and Laser ceramics can resist the thermal shock. With a low thermal expansion coefficient, Laser ceramics don’t warp at high temperatures.
· Splatters bouncing up is a common incident in laser cutting. Laser ceramics reduce this to protect other crucial components of the cutting head, especially the lens.
· Laser ceramics are extremely resistant to corrosion. They won’t typically degrade, even under extreme pressure.
Types of Laser Laser ceramics
To understand which Laser ceramics is suitable for you, check their types in detail. We have also discussed the benefits and drawbacks of each type.
· Zirconia: This is the most popular type of Laser ceramics for its superior quality. Laser ceramics made of zirconia are typically very tough and resistant to cracking. They also have a high wear and corrosion resistance. And their thermal expansion coefficient is very low. So, these rings will withstand rapid temperature changes. But zirconia rings are expensive, so you should only use them when necessary.
· Alumina: Alumina Laser ceramics have a higher thermal conductivity than zirconia rings. Their electrical insulation and wear resistance is also excellent. But the problem is these rings can’t withstand frequent temperature changes. In such conditions, these rings tend to become brittle and can crack sometimes. So, you might need to replace them more often than zirconia rings. But the good thing is they are less expensive.
· Silicon Nitride: These rings are as good as zirconia rings, if not better. For example, they are very tough but don’t become brittle due to temperature changes. Their thermal expansion is also low and resistivity to wear or corrosion is high. But they are very expensive.
Silicon Carbide: This material is known for its toughness, conductivity, and wear resistance. But the problem is it can be brittle and break down under stress.
How to Choose the Suitable Laser ceramics for Your Machine?
You need to consider several factors before choosing a Laser ceramics. Here is a quick guide.
· Laser Power
If you work with high-power laser, the Laser ceramics should be more resistant to thermal expansion. So, using silicon nitride Laser ceramics can be the best choice.
· Cutting Material and Speed
Depending on the hardness of the material, you need to use different Laser ceramics. For example, silicone carbide Laser ceramics work best with harder materials. And when you need varying or higher cutting speeds, alumina Laser ceramics are better in terms of conductivity.
You may require various precision levels depending on the target material. So, choose a Laser ceramics that fits your budget.
How to Replace a Laser ceramics?
Follow the steps below to replace your old Laser ceramics.
· Step 1: Remove the cutting nozzle by unscrewing it with your hand.
· Step 2: Twist the Laser ceramics lock nut to loosen it.
· Step 3: Remove the old Laser ceramics.
· Step 4: Insert the new Laser ceramics in such a way that the positioning pin and hole are aligned properly.
· Step 5: Tighten the Laser ceramics lock nut.
· Step 6: Install the cutting nozzle.
Why Should You Choose Startnow Laser ceramics?
Startnow Laser ceramics are
1. Made of imported ceramic and high-quality alloy
2. Have low thermal expansion
3. Will not deform when heated
4. Ensures smooth airflow
5. Highly conductive due to silver glue and gold-plated copper needles
If you want to avoid frequent replacement of Laser ceramics in your laser cutting machine, investing in high-quality Laser ceramics is a wise decision. At Startnow, we offer a wide variety of Laser ceramics that will meet all your cutting needs.