Metal Detection is necessary in the timber industry to insure that incoming logs are free of contaminants such as nails, to prevent damage to expensive saw blades used in making wood boards, LVL, OSB, plywood, paperboard and other products. Additionally, finished wood products, especially paperboard, must be inspected for metal contaminants, to prevent harm to the various products manufactured by these materials.
CASSEL has been specialising in metal detection for the timber industry for 25 years. Our METAL SHARK® systems are perfectly suited to inspecting boards as well as tree trunks. They are sturdy, stable and sensitive – providing optimum protection for your products and machines.
All-rounders: Tunnel metal detectors
METAL SHARK® TU, METAL SHARK® BIG and METAL SHARK® BIG pba tunnel metal detectors are particularly suitable for installation in conveyor belts, vibratory conveyors or trough channels. They can be used, for example, to monitor delivered co-products and thus protect chippers, shredders, flakers or mills. They can also be used to monitor sawdust or wood shavings for wood chipboard (MDF boards or chipboard), for example, and thus protect the expensive presses.
METAL SHARK® TU is divisible and therefore particularly easy to install. The METAL SHARK® BIG is designed for large product heights, while the METAL SHARK® BIG pba is specially designed for very wide and flat products, such as chipboard or OSB boards.
The economical alternative: Single or tandem probes
In case of low bulk height, single-plate metal detectors (so-called under belt coils or under belt probes) like the metal detectors SQ or QLC can be an easy to install and inexpensive alternative to tunnel detectors. They are stable and weatherproof and simply installed under belt or vibratory conveyors. Their accuracy is a little less than that of detectors that detect the product completely from all sides, but this is quite sufficient for many applications. A possible application is the inspection of wood chips for chipboard production. If the height of a product is too high, a second probe can be mounted above the belt (tandem version).
The specialists: Round and octagonal openings
The METAL SHARK® OCTA or the METAL SHARK® BIG RD offer optimum protection for saws and saw frames when processing entire tree trunks. They reliably find the smallest metal particles on and deep inside large diameter logs – even at high conveying speeds. Thanks to the octagonal or round opening, they can be ideally integrated into trough or troughed conveyor belts.
The METAL SHARK® OCTA and METAL SHARK® BIG RD detectors, like all METAL SHARK® detectors, have a very robust design and, with the appropriate sealant, can withstand extreme weather conditions and low temperatures.
Precision work: Multi-segment detectors
The METAL SHARK® COMBI and METAL SHARK® COMBI TU multi-segment metal detectors have been developed for high precision and the most accurate location of metal contaminants. With these detectors, many individual sensor plates are mounted next to each other. This segmental design enables a consistently high detection accuracy even with very wide products.
Each sensor individually detects possible metal contaminations. The software can thus display the position of the metal contamination in relation to the area. The width of the so-called sensor bank as well as the size and number of detectors are ideally adapted to your product. This way, in case of contamination, as little valuable product material as possible is rejected.
Do you also want to check your boards for other foreign objects like ceramics or glass? No problem with the XRAY SHARK® BOARD x-ray unit. And if you have not found your application here, just give us a call: We will be happy to answer your questions.