Marking by plasma
Marking by plasma creates a surface discoloration and vaporizes a small amount of material. The advantage of plasma marking is that it can be done with the same plasma unit. The plasma unit will automatically switch to Argon for optimum layout marking results.
Marking by milling
From all types of layout marking, milling gives the best quality mark, visible even after shot blasting, painting or galvanizing. A high air output motor in the marking tool runs at 20.000 rpm to rotate the carbide milling tip to mark with a depth of approximately 1 mm (3⁄64”). The carbide milling tip has four useable sides and can easily be exchanged. Marking speeds are possible up to 6,5 m/min (21 ft/min).
Serial numbers, product codes or other identification codes are hydraulically stamped into the steel surface. Stamped numbers can be seen even after shot blasting, painting or galvanizing. The maximum depth of the mark is 1 mm (3⁄64”).
Inkjet is the fastest marking process Voortman offers on their plate processing machines. The marking speed is 20 m/min (65 ft/min). It can print all types of lines, texts and layout marks on mild steel, stainless steel and aluminum plates which makes it a very flexible marking process.
Voortman’s inkjet marking unit is equipped with a 16 nozzle, stepless rotatable printing head, which can rotate 360°. This enables printing of texts in all directions. Also the text height can easily be regulated between 3 mm (1/8”) and 67 mm (2-5/8”) by rotation of the printing head. It can print a full logo or a part number in just one swipe which reduces movement of the gantry. Inkjet marking is less effective on plates which are wet or oily.