FAQ

The fiber laser cutting machine is a technology that has really revolutionized the metal and auto industrial cutting industries. Unlike other cutting methods that are very expensive, fiber laser machine is now almost the cheapest metal cutting equipment to run. It is changing the configuration that the laser beams operate on so as to be able to march the specifications for the metal being cut.

Fiber lasers are a type of solid state laser with reliable and highly focused beam quality. The beam diameter of the fiber is smaller than CO2 laser resulting in finer details in work. Fiber laser cutting machines are 100 times stronger than gas laser machine. Due to its set of great features, Fiber Laser Cutting Machines find their use in a wide range of applications, such uses are listed below:

1. Medical Devices
   Medical field cannot imagine its present and future without fiber laser metal cutting machines. From cutting small components for really complex medical devices to laser surgeries performed on human tissues, laser cutting is used at every step in the medical field. High precision fiber laser cutting makes the medical devices more accurate so as to avoid potential risks.
2. Jewelry
   Jewelry manufacturers were in desperate need of a reliable and cost effective technology which can provide precise cutting, superior edge quality, ability to cut complex shapes and high production ability in less time. A fiber laser cutting machine fulfilled all these requirements and is widely used today in this industry. Also fiber laser marking machines are widely used with fiber laser cutter to create more personalized jewelry designs and styles.
3. Automobile Manufacturing
   The automobile manufacturing industry is huge and developing every second. Use of fiber laser cutting machines makes it easier for this industry to cope with everyday advancement in design and technology. These machines are excellent for cutting smaller and complicated components used in automobiles, with great accuracy. These machines are not only specialized in cutting metal sheets, but also skilled at cutting metal tubes with another independent control system. It leaves no fraying while cutting the materials, unlike conventional processes which use blades.
4. Electronics
   Silicon is the most important material used in semiconductor and microelectronics industries. As electronic devices are getting more and more compact with each passing day, chips are bound to get smaller. In such a case fiber laser cutting machines are ideal to cut thin and delicate material like silicon.

Are you now planning to start a laser cutting business to broaden your business? If yes, we are always willing to provide professional laser solution for your choice. Just contact us today to know which fiber laser cutting system is best for your business.

In the last post, we have talked about the reason of and how to deal with the poor cutting quality of fiber laser cutting machine. Then in this article, we will continue this topic to further discuss how to adjust the cutting parameters when encountering poor cutting quality.

Here we mainly introduce the state and solutions encountered when cutting stainless steel and carbon steel with a fiber laser metal cutting machine.

For example, fiber laser cut stainless steel with slag has a variety of types. If there is slag only on the cutting corner, you can reduce the focus and increase the pressure.

If the overall stainless steel cutting surface has slag, it is necessary to reduce the focus, increase the air pressure, and increase the cutting tip. But if the focus is too low or the air pressure is too high, the cutting surface may have stratification and rough surface. If the granular soft residue is existing, the cutting speed or the cutting power can be appropriately increased.

Cutting stainless steel may also encounter the situation that the end of the cutting surface has slag. If so, you can check whether the gas supply is insufficient or whether the gas flow can keep up with the cutting process.

Cutting carbon steel by fiber laser metal cutter generally encounters problems such as dark section of the thin plate and rough section of the thick plate.

In general, a 1000W fiber laser cutting machine can cut no more than 4mm carbon steel with bright cutting surface; 2000W fiber laser is suitable for cutting 6mm carbon steel, while 3000W is suitable for cutting 8mm carbon steel.

For users who want to cut the section with bright cutting surface, firstly the surface of the carbon steel plate should be rust-free, lacquer-free and non-oxidized; and secondly the oxygen purity is higher than 99.5%. During cutting process, please note that double layer cutting nozzle of 1.0 or 1.2mm should be used, cutting speed needs to be more than 2m/min, and the cutting pressure should not be too high.

If you want the good cutting quality of the thick plate, you must first ensure the quality of the plate and the purity of gas. Secondly, the cutting nozzle should be carefully selected. The larger the aperture, the better the quality of the section, but the taper of the section will be larger. You will find the optimized parameter settings from several testings and daily practice by personally operating a fiber laser cutting machine for metals.

Fiber laser cutting machine is a kind of laser cutting method that uses a fiber laser generator as the optical source. Fiber laser is a new type of laser beam that is newly developed in the world. It outputs a high-energy-density laser beam which focuses on the surface of the workpiece, melting and vaporizing the area illuminated by the ultra-fine focal spot. Then the spot is moved by the numerical control mechanical system to achieve automatic cutting with high speed and high precision.

For beginners who are new to the fiber laser cutting machine, they will be in trouble when encountering poor cutting quality. How to adjust the machine in the face of numerous parameters? Let’s have a look at the solution!

The parameters that can affect the cutting quality mainly include: cutting height, cutting nozzle model, focus position, cutting power, cutting frequency, cutting duty cycle, cutting pressure and cutting speed. Hardware conditions include: protective lens, gas purity, sheet metals quality, focusing mirror and collimating mirror.

In the case of poor cutting quality, it is recommended to conduct a general inspection on the fiber metal cutting machine first. The main inspection content and orders are:

1. Cutting height
   The actual cutting height is recommended to be between 0.8-1.2mm. If it is not accurate, calibration is required.
2. Nozzle inspection
   Check whether the nozzle model and size are wrong. If it is correct, check if the cutting nozzle is damaged, or if the roundness is normal.
3. Optical center
   It is recommended to use a cutting torch with a diameter of 1.0mm for optical inspection. When checking the optical center, the focus is preferably between -1 and 1mm. The light spot thus produced is small and easy to observe.
4. Protective lens
   Check whether the protective lens is clean and free of water, oil and slag. Sometimes the lens is fogged because of the weather or the cold auxiliary air.
5. Focal point
   Check whether the focal point is set correctly. If it is an auto-focusing cutting head, be sure to check if the focus is correct.

After the above 5 items are checked and there are no problems happening, the parameters should be modified according to the cutting effect.

How to adjust the parameters according to the cutting effect? We will talk about this question in the next post. No matter you are a beginner or an experienced fiber laser metal cutter operator, cutting quality is always a key point that relates to your business productivity and profit margins. At Reaying, we are specialized in providing efficient and cost-effective laser cutting solutions for you.

For more information on our professional laser engraving & cutting solutions based on a wide variety of materials, please pay close attention on our posts or write to info@reaying.com to get quick response.

Recently our company have been studying a project that how to process jeans with our CO2 laser engraving machine for cloth. The reason why we focus on this topic is that most jeans manufacturers use potassium permanganate to fade denim to create various styles. This way is not good and environmentally friendly to people’s health and our nature. Plus, modern people prefer man-made old jeans or even ripped jeans more than conventional ones.

People are more likely to neglect the damage caused by potassium permanganate to both their health and ecological environment when wearing fashionable jeans. A new manufacturing technology is therefore needed to replace potassium permanganate. As a professional manufacturing tool for nonmetals, CO2 laser engraver is rightly applicable for engraving cloth, including jeans and other fabrics. How it works on jeans? What are the advantages of laser engraved cloth? Let’s firstly learn something about CO2 laser engraver.

CO2 laser engraving machine is a big family in which many stand and custom models are contained and can process a wide range of non-metal materials, such as paper, fabric, plastic, acrylic, glass, wood, rubber, etc. When utilizing a laser engraver to engrave on the surface of jeans, users can control the engraving depth and speed randomly to created personalized and unique styles to upgrade the value of jeans.

But whether jeans laser engraving can be profitable if you want to start a laser engraving business? If you are rightly running a laser business involving laser products customization service, you should calculate the investment on the laser engraving tool and the returns that the machine brings. Laser engraving machine price is the priority for users and also for us who are responsible for each customer’s laser business success. At Reaying, we have been striving to upgrade our laser technology and decrease the cost as much as possible. By working closely with laser machine users and practitioners, we have improved our laser machine quality and performance markedly. You can feel reassured to buy a laser engraving and cutter machine from Reaying with fair price and reliable service.

Investment on CO2 laser engraver can achieve lot production in factory production lines, reducing labors and work time. Even though you are a home laser user, you could develop you own laser customization business by producing jeans redesign, art crafts customization and so on. And now jeans market has great potential coming from worldwide consumers, for jeans are always welcomed by world people with different backgrounds. So there are local markets and foreign markets for jeans manufacturers to sell laser engraved jeans. A huge market for making profits!

Based on this emerging application, our company will put more money and human resources to

In winter, the laser source of fiber lasercutting machine often happens failure. When the temperature of the machinecooling liquid is lower than the “freezing point” temperature, thecooling liquid will solidify and form a solid. The volume will become largerduring the solidification process, which will cause water circulation pipes andsealed connections damage. In order to avoid damage to the laser source, laserhead and water chiller caused by solidification of the coolant, ShandongReaying Machinery Co., Ltd. summarized three solutions for you.

1. If you ensure there is no poweroutage in the local area, do not turn off the water chiller at night. At thesame time, for energy saving reasons, please adjust the temperature of Lowtemperature (L) and High temperature (H) water to 5 ~ 10 °C to ensure that thecoolant is in circulation and the temperature is not lower than freezing point.
2. Drain the cooling liquid in thelaser source and water chiller after each use of the machine.
   1) Remove the water pipe from the WaterInlet from the Water Chiller, and then blow the Water Inlet with nitrogen orcompressed air (pressure is about 5 Bar) until the residual liquid in the WaterChiller is blown clean from the Water Outlet.
   2) Remove the water pipe from the WaterInlet from the Laser Source, and then blow the Water Inlet with nitrogen orcompressed air (air pressure is about 5 Bar) until the residual water in the LaserSource is blown clean from the Water Outlet. Then use a water pipe to short connectthe Inlet and Outlet or block with rubbers to prevent dust contaminating theinside of the laser.
   3) Water Chiller drainage method:Open the lower drain valve of the Water Chiller, drain the water of the WaterChiller. If necessary, tilt the Water Chiller to a certain angle to make the WaterOutlet the lowest point.
3. Use antifreeze as the coolingliquid: Antifreeze must be used when cannot meet above two solutions.
   The baseliquid of antifreeze is generally composed of alcohol and water. It has highboiling point, small mutation, moderate viscosity and small change withtemperature, good thermal stability and does not corrode metal parts and rubberhoses. The freezing point should be about 5 °C lower than the lowesttemperature in the environment.

Antifreezeselection
Recommendusing a special brand of antifreeze, please do not use ethanol to instead of.
It isrecommended to use the DowthemSR-1 or CLARIANT brand represented by DowChemical in the United States. There are two types of antifreeze for lasersystems:
1) Antifrogen® N Cholesterol-Water;
2) Antifrogen® L propylene glycol-water type;
Note: Antifreeze cannot be used all year round. Thepipeline must be cleaned with deionized or distilled water after the winter.And then use deionized or distilled water to be the cooling liquid.

Winternotes:

1. Before starting the machine, itis necessary to check the important parts such as the laser water circulationsystem and the protective mirror to prevent it from freezing.
2. Once the Laser Source freezes,it cannot be forced out the laser beam. It is necessary to wait for the lasercooling system to return to normal before the work. Forcing light out duringfreezing can cause internal damage to the laser and damage to the lens by thelaser head.
3. After starting the WaterChiller, first check the readings of the two temperature zones. If the pressureor flow alarms, the water system must be checked to see if the valve is notopen or the inside of the water chiller is frozen.
4. After the Water Chiller is in normal working,the water temperature in the low temperature is lower than the lowesttemperature allowed by the laser machine, and it cannot be heated for a longtime. Raise up 5 °C higher for two temperature zones, details you can check theinstruction. After the temperature rises, restore the two temperature zonesettings (normally, the set temperature of the low temperature water is 20-25 °C, and the set temperature of the high temperature water is 25- 35 ° C).

At present, there aretwo types of pulsed fiber laser source used in fiber laser marking machinewhich included Q-Switched pulsed fiber laser and MOPA Q-Switched fiber laser. Q-Switchedpulsed fiber laser was introduced to China in many years, so they currentlyoccupy a large processing market. The MOPA Q-Switched fiber laser has onlygradually developed in recent years. So, what is the difference between a MOPA laser and a Q-switched laser? What new technologies and advantages does MOPA laser have?

1. The marking application difference between MOPA laser andQ-switched laser.

1-1. Alumina sheet surface stripping application

Today, the electronic products are getting thinner andlighter. Many mobile phones, pads, and computers use thin aluminum oxide as theouter casing of the product. When the Q-switched laser is used to mark theconductive position on the thin aluminum plate, the material is easilydeformed, and the “convex package” is generated on the back surface,which directly affects the aesthetic of the appearance. The parameters of thesmaller pulse width of the MOPA laser can make the material less deformable andthe shading is more delicate and brighter. This is because the MOPA laser usesa small pulse width parameter to make the laser stay in the material for ashorter period of time, and has enough energy to remove the anode layer.Therefore, for the processing of stripping the anode of a thin alumina plate,MOPA Lasers are a better choice.

1-2. Marking black on anodized aluminum application

MOPA laser is used to mark the black logo, model, text, etc.on the surface of the anodized aluminum material. In the past two years, thistechnology has been widely used by electronic manufacturers such as Apple,Huawei, ZTE, Lenovo, and Meizu to mark the logos and models of black marks onthe outer casing of electronic products. For this type of application, onlyMOPA lasers are currently available for these processing. Since the MOPA laserhas a wide pulse width and pulse frequency adjustment range, the parameters ofthe narrow pulse width and high frequency can be used to mark the black on thesurface of the material, and different gray scale effects can be marked bydifferent parameter combinations.

1-3. Electronic, semiconductor, ITO precision processingapplications

In precision machining such as electronics, semiconductors,and ITO, it is often necessary to use fine scribing applications. TheQ-switched laser cannot adjust the pulse width parameter due to its ownstructure, so the line drawn is difficult to be fine. The MOPA laser canflexibly adjust the pulse width and frequency parameters, which not only makesthe line drawn fine, but also the edges appear smooth and not rough.

In addition to the above several application cases, there aremany others application difference between MOPA lasers and Q-switched lasers.Here are some typical application cases, as shown in the following table:

In the above comparison, it can be seen that the MOPA lasercan replace the Q-switched laser in many applications. In some higher-endapplications, MOPA lasers are especial superior to Q-switched lasers.

Why is the MOPA laser more advantageous than the Q-switchedlaser? We will explain the parameters of the two types lasers one by one.

2. Differences in parameter specifications between MOPAlasers and Q-switched lasers.

Here, we use the parameters of the typical Raycus Q-Switchedlaser and the JPT M6+ series MOPA laser as comparison:

By comparison, it can be seen that the JPT M6 series laser ofMOPA technology has a large adjustment space compared with the Q-switched laserin terms of pulse width, pulse frequency and control waveform. This allows usto make the required effects for different materials through a combination ofvarious parameters during commissioning. If you need specific modulation laser parameters, please contact us, Reaying Machinery is ready to provide users witha full range of laser application solutions.

The difference between fiber laser markingmachine and carbon dioxide laser marking machine is mainly the workingprinciple, advantages and application industry of laser.

Fiber laser refers to the laser source thatuses rare-earth-doped glass fiber as the gain medium. The working principle offiber laser is that it is easy to form high power density in the fiber underthe action of pump light, which causes the laser energy level of the workingsubstance of the laser to “particle number inversion ”, When a positivefeedback loop (forming a resonant cavity) is properly added, a laser oscillationoutput can be formed, and a laser beam with a wavelength of 1064 nm isgenerated.

Advantages of fiber lasers:

1. The manufacturing cost of glass fiber islow, the technology is mature, and the life is up to 100,000 hours;
2. Fiber laser is smaller and moreintegrated;
3. No adjustment, no maintenance, highstability;
4. Fiber lasers are qualified for harshworking environments and have a high tolerance for dust, vibration, shock,humidity, and temperature;
5. No need for thermoelectric cooling andwater cooling, just simple air cooling can greatly reduce costs;
6. High electro-optical efficiency: Thecomprehensive electro-optical efficiency is over 25%, which can greatly savepower consumption during work and save costs.

Application scope of fiber laser markingmachine: all kinds of metals and some non-metals, electronic separationcomponents, integrated circuits (IC), electrical circuits, mobile phonecommunications, hardware products, cutlery and kitchenware, tool accessories,precision instruments, glasses and watches, computers Keyboards, jewelry, autoparts, plastic buttons, plumbing fittings, sanitary ware, PVC pipes, medicalequipment, packaging bottles, etc.

The working principle of a CO2 RF tubelaser is to excite a mixed gas of CO2, neon, argon, etc. through an excitationsource, and then through particle number inversion and light amplification tofinally generate a laser with a wavelength of 10.64um.

CO2 laser advantages:

1. The life of CO2 laser is up to 30,000hours for one charge, and it can be used for inflation.
2. Cooling method: air cooling, stablelong-term operation
3. The spot pattern is close to TEM00, thespot is round and uniform, and the spot diameter is small
4. Low voltage power supply, high safety

CO2 laser marking machine applications:clothing accessories, pharmaceutical packaging, alcohol packaging, buildingceramics, beverage packaging, fabric cutting, rubber products, casingnameplates, craft gifts, electronic components, leather and other industries.

Compared:

1. The service life of the fiber lasermarking machine is 100,000 hours, and the co2 marking machine is 30,000 hours.The former is much longer than the latter.
2. In terms of accuracy, fiber lasers arenano-level processing methods, while CO2 lasers are micron-level. The accuracyof fiber lasers is higher than that of CO2 lasers.
3. The application range of fiber lasermarking machine is different from that of co2 laser marking machine. Fiberoptic marking machine is more widely used than CO2 marking machine. But bothhave irreplaceable aspects.

The above is the difference between thefiber laser marking machine and the CO2 laser marking machine organized byShandong Reaying M

Over the past decade, fiber lasers have revolutionized industrial materials processing because of their unique combination of performance, reliability, and cost advantages. Fiber laser sources have displaced many traditional metal cutting methods in existing applications, and they have made possible new applications that could not be addressed with previous technologies. One of the outstanding applications is that fiber laser cutting machine is capable of processing reflective metals with favorable results.

What are reflective metals?
“Highly reflective metal” is a common word that almost all metal processing practitioners know. But what it means in essence? To figure out what is reflective metals, firstly it is important to know the constituents of metals. Take Aluminum and Silver as examples, they are highly reflective and can reflects 95% visible light. Laser cut and marked aluminum and silver products are widely used in windows, jewelry, solar mirrors, decorative materials. Other reflective metals like gold, bronze, copper and brass are also hard to laser cut using fiber lasers. Stainless Steel is also considered to be a reflective metal especially when an object made of steel is given a mirror polish. All these reflective metals have to be processed by fiber laser sources.

How to cut reflective metals?
Laser processing on reflective metals needs special fiber laser sources. As the reflected beam will damage the laser machines, nLIGHT fiber laser source is adopted by Reaying fiber laser metal cutters to cut reflective metals. Fiber lasers are the most modern, swift and cost effective way to cut thin reflective metal sheets. As these lasers do not use mirrors and delicate lenses, the reflection from metals like copper, aluminum and brass do not damage the cutting equipment. So Fiber laser technology is the best way to cut reflective metals.

Advantages of Reaying fiber laser cutter for reflective metal sheets:
Stable processing of polished stainless steel, aluminum, brass, and copper: nLIGHT fiber lasers are especially configured on our fiber laser cutting machine specializing in cutting high reflective sheet metals. This fiber laser source incorporates a proprietary back-reflection isolator that protects all modules from back-reflections generated by the workpiece. The whole cutting process is safe and stable, without any damage to the laser source.

Highest uptime with the lowest cost of ownership: our fiber laser metal cutting machine design enables end users to manage maintenance and service regularly, which results in higher machine uptime, lower cost of ownership, and a greatly improved customer experience.

Improved cutting performance: our fiber laser metal cutting machines are designed for precision metal parts manufacturing industries. Featured with faster processing of fine features, and better processing quality through minimal heat affected zone, they have been widely welc

Laser welding technology is now widely employed to expand or upgrade laser industries, especially when working work laser marking and laser cutting. To help you learn more about laser welding, here 3 aspects about its introduction, advantages and applications are listed below.

1. Laser Welding VS Traditional Welding Methods
   Laser welding is capable of welding tasks beyond the capability of traditional welding methods. TIG and MIG welding have long been recognized as good choices for welding small components because of their excellent finish. However, such traditional welding methods require skill and dexterity, and despite their controllability, may suffer from several disadvantages. Laser welding is an excellent substitute that frequently outperforms arc welding processes, and its tightly focused beam limits heating effects.
   The heat required for welding is supplied by a tightly focused light beam with a diameter as small as two-thousandths of an inch. Welding is conducted by firing a series of short pulses that melt the metal to create a high-quality weld. Depending upon the particular welding task, filler material may be required as with TIG welding. Because the laser beam is tightly focused, heat input is minimized and parts can be handled almost immediately.
2. Laser Welding Advantages
   Precise control of the laser beam offers users several benefits when using laser welding machine:
   Weld strength: The laser weld is narrow with an excellent depth-to-width ratio and higher strength.
   Heat affected zone: The heat affected zone is limited, and due to rapid cooling, the surrounding material is not annealed.
   Metals: Lasers successfully weld carbon steel, high strength steel, stainless steel, titanium, aluminum, and precious metals as well as dissimilar materials.
   Precision work: The small, tightly controlled laser beam permits accurate micro-welding of miniature components.
   Deformation: laser welded parts have minimal deformity or shrink.
   No contact: No physical contact between the material and laser headduring welding process.
   One sided welding: Laser welding can replace spot welding requiring access from one side only.
   Scrap: Laser welding is controllable and generates low volumes of scrap.
3. Applications of Laser Welding System
   The unique properties of laser welding system give it a significant advantage over other forms of welding that can be exploited in several ways:
   Precision parts: Lasers are excellent for welding fine and delicate metal components and generating minimal internal stresses due to the minimal heat input.
   Medical devices: Non-contact welding and no welding splatter ensures hygiene when welding medical devices.
   Solenoids and machined items: Lasers are ideal for joining machined components such as solenoids, and create minimal distortion due to the low heat input.
   Aesthetics: Laser welding finishes are excellent.
   Limited access: The non-contact laser beam permits welding in otherwise inaccessible areas.
   Jewelry welding and high value items: The precise controllability and negligible heating effects make it a good choice for welding high value, high precision parts including precious metals.

Improve laser business productivity with Reaying Laser WeldingSystem.

Laser welding can solve many engineering problems, especially with regard to components that are sensitive to the effect of excessive heat input, susceptible to distortion, or that require extremely precise welding. Contact us at Reaying Laser to see how our portable welding systems are able to improve your manufacturing processes and productivity.