There are plenty of metals in nature. Advances in metals and manufacturing processes brought us the industrial revolution. This led to an exponential growth in human civilization. Although many different materials are used in industry today, there is no doubt that metal is still the king of all materials. Its use in our lives is prevalent. We can see metal products almost everywhere. That’s why the use of metal laser engraving machines is now in high demand.
In this quick guide, you will learn about laser engraving on metal and the different types of laser engraving machines. As a result, you will know what metal laser engraving machine is best for your business. Metal has a lot of advantages in everyday applications. Compared to all other materials used, metal is durable, machinable, heat resistant, and beautiful. You can find metal almost anywhere, whether it is pure metal or an alloy. The creation of alloys has made it possible to customize the production of metals for thousands of uses. Because of their widespread use in industry, engraved metals have become vital.
Types of Laser Engraving Machines for Metals
Fiber laser marking machine is also known as fiber laser marking machine, fiber laser engraving machine, etc. A fiber laser marking machine is a CNC laser marking system that uses a fiber laser beam to permanently mark a wide range of object surfaces. There are specialized marking machines suitable for a range of metal and non-metal materials. Fiber laser marking machine is widely used in industrial manufacturing applications, school education, home business, etc.
Metal Fiber Laser Marking Machine with Dynamic Focus Systems for Curved Surface
This is the best marking machine for laser engraving on the surface of large curved objects, such as curved surfaces, spheres, and bevels. This metal laser marking machine adopts a dynamic focus system, which is able to auto-focus dynamically. It also supports two-dimensional accuracy correction files and focal error correction files for flexible and accurate operation and use. This technical laser engraving machine also has large picture splicing, customized software development, CCD visual marking, spiral cutting, and other functions.
- Automotive machinery industry: laser engraving steel jacket, piston ring, engine, factory metal flexible cardboard, engine metal flexible cardboard, machine tools, etc.
- Electronic communication industry: keyboard, electronic components, home appliance panel etc.
- Hardware and instrument industry: knives and scissors, medical equipment, stainless steel products, etc.
- Buckle label industry: buttons, belt buckles, gold and silver jewelry,greeting cards, tablet PCs, etc.
- Instrumentation glasses industry: metal shell, table bottom, glass frame, instrument panel, etc.
- Woodcraft industry: calligraphy and painting imitation processing table, furniture decoration, etc.
- Packaging bottle cap industry: cosmetics and another packaging, metal bottle caps, easy to pull cans, etc.
New Desktop Fiber Laser Marking Engraving Machine
The biggest advantage of this metal laser marking machine is that it can work continuously. It is suitable for long-time production work in factories, and it can meet the needs of continuous industrial work without maintenance and long time working without failure. The laser source of this machine adopts the world-famous Chinese brand Raycus/JPT/MAX/Super Fiber laser equipment (lifetime 100,000 hours, air-cooled).This metal laser engraving machine is engaged in the industry of automotive parts, machines, pipes, hardware, and tools using laser engraving to introduce bar codes, serial numbers, logo etching, and tracking numbers on them. So now, almost all sizes of companies are trying to introduce traceability in their products as it helps them to increase the visibility of their companies. Metal laser engraving machines leave a permanent imprint for such applications. Metal laser engraving machines engrave marks that do not wear out and prevent the product from being tampered with.
MOPA Fiber Laser Marking Machine 20W 30W 60W 100W
This machine can color engrave metal, and it can add uniqueness to the engraved object by engraving colored marks on the metal surface. He can mark black on anodized aluminum, color on stainless steel and titanium, and white on black plastic. Laser marking can be done with relatively low-power laser equipment. Since the beam is low-powered, it does not raise the temperature of the base metal as much as other techniques. This is because the MOPA laser is special in that its pulse duration is variable: long or short pulses can adjust. So this metal laser engraver engraves less heated material and has a reduced heat-affected zone area.
Economical Fiber Metal Laser Marking Machine
The economical fiber metal laser marking machine is one of the most popular high-speed laser marking systems. Its advantage is that it can mark logos, characters, serial numbers, bar codes, data matrix on metals, and some non-metals. It is one of the very few marking machines that can metal, and non-metal can engrave together. Laser marking machine has various advantages such as no consumables, high-cost performance, fast marking speed, high marking accuracy, etc.
The economical fiber metal laser marking machine is very popular among customers. This metal laser engraving machine is equipped with EzCad2 software compatible with Windows XP, 7, 8, and 10. It is professional engraving, has stable performance, and has high reliability. The metal laser engraver can also use images from AutoCAD, CorelDraw, Adobe Illustrator, Photoshop, etc. Even a point-and-shoot engraver cannot engrave the smallest possible detail on the measuring device as perfectly as a laser engraver. Thanks to the automatic laser engraving system, there is no human error when marking.
New Designed Fiber Marking Machine With Double Laser Heads
Double-headed fiber laser marking machine designed for static metal materials marking and design. For example, stainless steel logo marking, small hardware batch marking, 3C product marking, etc. So it is perfect for direct parts marking. Its cooling mode is air-cooled. Metal laser marking machine is two laser sources working at the same time, so it has high efficiency and long life of 100,000 hours.
Automatic Double Station Fiber Laser Marking Machine
This one is also an advanced laser marking machine for marking metals and non-metals together. The metal laser marking machine works in a fully enclosed process, so it is very safe to operate. This is also a duplex fiber laser marking machine, which keeps the laser beam invisible during the working process without reducing the laser marking efficiency.
30W Laser Marking Machine with Safety Cover
This is a low-power metal laser marking machine. I always use it for engraving various precision parts, hardware tools, instruments, jewelry, garments, and other products. You can use this marking machine in electronics, aerospace parts, professional marketing, medical equipment, etc. Its measurements are very precise. Because of their precision, they are sometimes used as markers and scales in hospitals or laboratories, in addition to heavy industrial metal parts.
Metal laser marking machine marking method
Laser marking is an extremely versatile process. Laser marking is a generic term that can be used interchangeably for different processes such as engraving, foaming, coloring, etc. The choice of method depends on the material and quality requirements. The above describes the types of laser marking machines and next takes you through several common ways of marking machines.
Laser marking is suitable for relatively low-power laser equipment to accomplish. Since the beam is low-powered, it does not raise the temperature of the base metal as much as the other two techniques. Engraving during marking generates high temperatures, which cause the material to evaporate. Since the surface material is removed, there is minimal damage to the material itself (compared to laser etching), but this method may not be suitable for marking safety-critical parts. This laser technique is less common than engraving and etching. It is also the fastest way to laser mark.
Also, laser marking is an environmentally responsible etching method because it does not produce any toxic by-products. The same cannot be said for acid etching. And there are no daily operating costs for laser marking, except for the cost of electricity for the equipment. The system requires very little manpower to handle the system. The operator simply sets up the machine to do the job automatically.
Laser engraving removes the substrate material at a relatively high temperature, hence the high power laser beam used in this technique. This high temperature causes the substrate metal to evaporate. It is very fast and produces deeper indentations than the other two techniques. Laser engraving is not recommended for safety-critical parts but rather for parts that are susceptible to wear and tear. It can be used to create indentations on materials other than metal, such as wood, plastic, leather, and glass.
The laser etching process is, to some extent, a product of laser engraving. In this technique, the heat of the beam creates a dent in the substrate material. This means that etching occurs when the heat of the laser beam causes the surface of the material to melt. The melted material expands, causing a raised mark. Also known as melting or forming etching also changes the surface finish of the metal, such as contrast and reflectivity. Etching is best suited for plated metals, but the scope is not limited to metals. It can also use to engrave ceramics and polymers.
Laser bonding is a process in which a pigment or other coating is applied to a material and then bonded to the surface by the heat generated by a laser. Safe to use on safety-critical parts, the marker is heat resistant and unaffected by fluids or salt. Next, take you through the list of metals suitable for metal laser marking machine engraving.Alkali metals alkaline earth metalsTransition metalsPost-transition metalsLanthanidesActinides
Pig iron is obtained from the first stage of the blast furnace and can be further refined to obtain pure iron. This iron is usually eventually made into steel and other alloys. Almost 90% of the resulting metal is ferrous. It is possible to create engravings with high contrast marks. Iron supports laser etching if a faster operation is the goal, but laser engraving leaves a stronger and more permanent impression on the metal.
Aluminum is primarily used in the manufacture of crankcases, crankcase covers, and aesthetically pleasing body parts in the automotive industry. The surface of aluminum has a high thermal conductivity. Fiber laser engraving machines can engrave aluminum at very high temperatures. Aluminum 380 and 6061 are the most common alloys for laser marking, but all types of aluminum can be marked. This includes die-cast aluminum, general-purpose aluminum, pure aluminum, and anodized aluminum.
Among the general-purpose metals, steel is one of the strongest materials. Surface polishing takes longer, and therefore, engraving is relatively difficult, and steel is usually engraved by laser etching. We can also increase the engraving speed by adjusting or compromising the color of the mark. Higher engraving speeds will produce white marks, while lower engraving speeds will produce black marks. In addition to etching or engraving, laser annealing on steel improves the corrosion resistance of the steel. Steel tubes, coils, and springs are the most common laser engraved products.
The industry typically uses 316 and 306-grade stainless sheets of steel for laser engraving. However, ordinary steel can be laser engraved just as well, and laser annealing prevents stainless steel from rusting. In the case of laser annealing, the oxide coating of chromium oxide on the surface will not be tampered with.Compared to other laser marking processes, SS undergoes laser annealing at relatively low temperatures. Aesthetic parts, railings, fuel tanks, and suspensions made of stainless steel are the base products for laser technology.
In the case of anodized aluminum, there are two possibilities. You can engrave on aluminum without an oxide layer, or you can engrave on top of the oxide layer. In the former case, the engraving is done before the aluminum is anodized and vice versa. Regardless of the order of engraving, the resistance of the anodized aluminum remains the same.
Magnesium is used by industry when lightweight parts must be manufactured. Laser engraving can be effective in creating marks on such lightweight parts. A clear and permanent mark is created. Therefore, creating marks on lightweight parts made of magnesium may not be the best technique. It is crucial to engrave identification codes or information on them. Laser engraving gets the job done quickly and perfectly, giving you peace of mind about the entire traceability process.
Unlike aluminum, lead has low thermal conductivity. This low conductivity means that the heat generated during the laser engraving process does not penetrate into the material but remains on the surface.Engraving lead with a laser marking machine is easier, though, because of its low melting temperature. This makes the engraving process easier and, therefore, faster. If the lead is a substrate metal, make sure you purchase a low-power fiber laser engraver.