How to engrave metal?

When marked components require reworking or additional painting and the material is rough, laser engraving needs to be applied deeper into the material.

The laser creates high heat during the engraving process, which causes the material to vaporize. This creates a cavity in the surface that is noticeable to the eye and touch. It is recommended when the laser marking suffers post-process stress (such as sandblasting for die-castings).

Fast fusion and vaporization of the material. Varying the depth is achieved by the number of passes. Only work with filled font/shapes.

• Annealing

Annealing heats the material locally to just below its melting point. This generates oxide layers on the surface of the workpiece which are associated with metallic annealing colors. It is also the preferred method whenever a precision fit is required or there is a need to avoid material bulging.

You can only anneal metals that change color when under the influence of heat and oxygen, i.e. steels and titanium, but not aluminum or nonferrous metals. Generally, the oxide layer is black, but it can also have other annealing colors. The color depends on the temperature of the heated layers. The material surface remains even during annealing because nothing is removed from it. The color change is achieved through localized material heating only. The heat usually penetrates .02 to .03 mm deep in the metal surface.

• Black marking

Black marking is a marking process that produces very high-contrast, dark markings. This structured surface reduces the amount of light that is reflected, and the result is a deep, matt blackening of the marking, which appears the same when viewed from any angle. This makes the marking non-abrasive. Black markings are ideal for rust-free stainless steels, titanium, copper and brass.

CNC metal engraving machines, the material is removed using cutting tools, «engraving cutters» of various sizes and shapes.

CNC is used for cutting out shapes in metal such as for control panels or for milling out 3D shapes such as the creation of hot stamps, mold insert or soft metal manufacturing in general. This technology can also be used to obtain text, numbers or logos deeply engraved in the part, whether it is for identification (direct part marking) of personalization purposes.

This marking process provides excellent non-contrasted results both for cutting or milling, and even our small engravers can do the job in soft metal such as aluminum or brass.

Our pneumatic dot peen marking machines are the best for marking applications requiring a very short cycle time to meet the speed requirements of industrial sectors.

The electromagnetic marking machines are more suitable for applications needing great precision and consistency. It is particularly efficient for DataMatrix code marking. The electromagnetic dot peen marking machine is a high-precision marking solution to meet traceability and identification requirements.

Our dot peen metal marking machines are economical with clear marking, marking twice as fast as other dot peen machines.

Silent with aesthetic and amazing results, scribing machines are used in all industrial operations, subject to noise level limitations: for marking large metal components (beams, rails, chassis and exhaust pipes etc.) for marking V.I.N. numbers (Vehicle Identification Numbers) on cars, motorbikes and heavyweight vehicles, etc.

This is the solution with the best marking/speed depth ratio. It provides high quality marking. It was developed for heavy industrial applications, our systems are durable and require very little maintenance.