Views: 157 Author: Site Editor Publish Time: 01-01-2024 Origin: Site
The laser cutting head operates under tough conditions. To shield its internal optics and critical components like the collimation and focusing lenses, protective lenses are placed above and below the head. During cutting, any dust or spatter from the workpiece can seriously damage the focusing lens. The lower protective lens acts as a barrier against these contaminants.
The state of the protective lens is crucial—it directly impacts the laser cutter's performance and the quality of the end product. A dirty lens not only compromises the cut but also risks damaging the cutting head's internals and the laser's output. That's why it's vital to choose protective lenses crafted from materials that are both highly transparent and resistant to heat expansion. If a lens becomes soiled, prompt cleaning or replacement is necessary.
Producing protective lenses is a complex process. It involves careful selection of materials and precision in manufacturing, including considerations of surface integrity, coatings, and mechanical properties like density and hardness. The production involves several meticulous steps such as material preparation, rough grinding, and precise coating. Each stage must meet high standards, and the final products are rigorously tested for quality.
Substandard lenses, produced to cut costs, often use poor materials and coatings. This compromises their light transmission and heat resistance, increasing the risk of cracking or shattering under the laser's intensity. A lens failure can spread debris throughout the cutting head, damaging vital parts like lenses and sensors. The repair costs can be steep—up to half the cost of a brand new cutting head. This doesn't even account for the downtime and the ripple effect of production delays, which can amplify financial losses.
We strongly encourage our customers to take these insights seriously and source laser components through official channels to prevent such costly setbacks!
Subpar protective lenses absorb more laser light, which can cause them to overheat. This leads to the thermal lens effect, distorting the laser's focus. It's a serious issue when using high-power lasers or cutting reflective materials. Here's how it affects operations:
With stainless steel, the distorted focus can create rough cut surfaces, unwanted slag, or even incomplete cuts.
In carbon steel, the same issue can cause too much slag at the bottom and prevent the cut from going all the way through.
Lower-grade lenses can't effectively stop dust and spatter, leading to burn spots. At ultra-high powers, these lenses can burn through completely.
If a protective lens fails and it's not caught in time, debris can accumulate on the focusing lens, causing damage that requires replacing the entire lens assembly.
When a protective lens fails in high-power laser equipment, it can immediately ruin internal parts of the cutting head. In extreme cases, it can even damage the laser output window, destroying the crucial OBH or LOE crystals.
Always use high-quality protective lenses and seals to keep the cutting head dust-free.
Follow the manual to reduce damage risks during operation.
Replace lenses in a clean, dust-free setting to avoid contamination.
Use a breathing system to maintain stable air pressure in the cutting head and prevent dust from getting in.
Handle the lens container with care during replacement to prevent dust entry.
Match the laser power to the cutting task to protect the cutting head.
Avoid poor cleaning practices that can damage the lens.
You'll need a dust-free swab, isopropyl alcohol, and a rubber blower. Spray the alcohol on the swab, gently grasp the lens, and wipe it clean in one direction. Use the blower to remove any remaining debris.
Inferior lenses can increase operational costs and reduce efficiency by causing delays and quality issues. We recommend buying lenses from trusted sources to avoid these costly problems. Avoid small gains that can lead to greater losses!
