Plate Magnets

Plate magnets are cost-effective, robust magnets that are well suited for filtering undesired ferromagnetic (Fe) particles out of free-fall product flows or products on a conveyor belt with relatively little Fe contamination. They have a deep, powerful holding field, enabling them to ‘capture’ Fe particles from the product flow and securely hold these contaminants against the magnet.

Magnet cleaning is performed manually by wiping (use safety gloves) or semi-automatically (plate magnet with extractor plate) by swinging the extractor plate away from the magnet (the Fe particles fall off of the extractor plate as soon as they are moved far enough away from the magnet).

Plate magnets are available in various standard sizes, with either ferrite or neodymium (Neoflux®) magnets. Other versions available on request.

Plate magnets/Flat magnets

Permanent plate magnets (also called ‘flat magnets’ at Goudsmit) can be easily built into existing installations and are used to filter undesired ferromagnetic (Fe) particles out of various raw materials (e.g. food products, plastics, chemicals, wood, stone, ceramic materials).

Used in this way, plate magnets serve to protect processing machines in a reliable, economical manner, which prevents interruption of production processes.

Further explanation of how they can be used is provided below:

As an overhead magnet, hanging above a product flow

In this situation it is important to allow the magnetic lines of force to penetrate as deeply into the product as possible. This improves the success rate for capturing Fe particles. To maximize field depth Goudsmit places an extra magnet between the magnetic poles. This pushes the magnetic flux (the magnetic field) deeper into the product. We call this flux control. This technique results in around 20% more capture power with a magnet of the same size.

As a plate magnet mounted under the product flow

Filtering Fe particles is easy when the product flows over the magnet. In this situation it is not the depth of the field but the strength of the magnetic field at the poles that is most important. Magnets optimized in this manner can even filter out stainless steel shavings. A groove prevents captured Fe particles from being carried off again; once they fall in, they cannot be carried off again by products passing over them.

As a plate magnet in a chute system

A product travelling through a conveyor chute can reach very high speeds. This makes it essential to use a powerful Neoflux® (neodymium) magnet for these applications. The products contact or pass close to the magnet, and the powerful magnet system draws in the Fe particles and holds them securely.

Choice between ferrite – oder neodymium (Neoflux®)-plate magnets

All our magnetic plates can be fitted with ferrite or neodymium (Neoflux®) magnets.

The differences:

Ferrite plate magnets

• less expensive than neodymium plate magnets
• good field depth (up to 400 mm) and suitable for temperatures up to 250 ^°C
• applications: recycling and food industries, for protecting processing equipment such as grinding mills
• 2800 gauss magnetic field strength at the magnet poles
• not suitable for capturing stainless steel shavings

Neodymium (Neoflux)-plate magnets

• approx. four times more powerful, but more temperature-sensitive than ferrite magnets
• can therefore be constructed in a light, compact package
• standard version suitable for temperatures to 80 ^°C, special version for up to 220 ^°C
• design: fully enclosed in stainless steel and completely waterproof (IP67)
• up to 7800 gauss magnetic field strength at the magnet poles
• suitable for the food industry

Available standard articles ferrite:

• SVMF010140 Type VMF1 – L140mm – Holding field 65mm – Ferrite magnet
• SVMF010270 Type VMF1 – L270mm – Holding field 65mm – Ferrite magnet
• SVMF010300 Type VMF1 – L300mm – Holding field 65mm – Ferrite magnet
• SVMF010340 Type VMF1 – L340mm – Holding field 65mm – Ferrite magnet
• SVMF010400 Type VMF1 – L400mm – Holding field 65mm – Ferrite magnet
• SVMF010530 Type VMF1 – L530mm – Holding field 65mm – Ferrite magnet
• SVMF010600 Type VMF1 – L600mm – Holding field 65mm – Ferrite magnet
• SVMF020150 Type VMF2 – L150mm – Holding field 75mm – Ferrite magnet
• SVMF020210 Type VMF2 – L210mm – Holding field 75mm – Ferrite magnet
• SVMF020270 Type VMF2 – L270mm – Holding field 75mm – Ferrite magnet
• SVMF020300 Type VMF2 – L300mm – Holding field 75mm – Ferrite magnet
• SVMF020340 Type VMF2 – L340mm – Holding field 75mm – Ferrite magnet
• SVMF020400 Type VMF2 – L400mm – Holding field 75mm – Ferrite magnet
• SVMF020530 Type VMF2 – L530mm – Holding field 75mm – Ferrite magnet
• SVMF030200 Type VMF3 – L200mm – Ferrite magnet
• SVMF030250 Type VMF3 – L250mm – Ferrite magnet
• SVMF030500 Type VMF3 – L500mm – Ferrite magnet
• SVMF040150 Type VMF4 – L150mm – Holding field 110mm – Ferrite magnet
• SVMF040200 Type VMF4 – L200mm – Holding field 110mm – Ferrite magnet
• SVMF040250 Type VMF4 – L250mm – Holding field 110mm – Ferrite magnet
• SVMF040300 Type VMF4 – L300mm – Holding field 110mm – Ferrite magnet
• SVMF040350 Type VMF4 – L350mm – Holding field 110mm – Ferrite magnet
• SVMF040400 Type VMF4 – L400mm – Holding field 110mm – Ferrite magnet
• SVMF040600 Type VMF4 – L600mm – Holding field 110mm – Ferrite magnet
• SVMF040700 Type VMF4 – L700mm – Holding field 110mm – Ferrite magnet
• SVMF040800 Type VMF4 – L800mm – Holding field 110mm – Ferrite magnet
•  SVMF040900 Type VMF4 – L900mm – Holding field 110mm – Ferrite magnet
•  SVMF041000 Type VMF4 – L1000mm – Holding field 110mm – Ferrite magnet
• SVMF041100 Type VMF4 – L1100mm – Holding field 110mm – Ferrite magnet
• SVMF041250 Type VMF4 – L1250mm – Holding field 110mm – Ferrite magnet
• SVMF041400 Type VMF4 – L1400mm – Holding field 110mm – Ferrite magnet
• SVMF050250 Type VMF5 – L250mm – Holding field 140mm – Ferrite magnet
• SVMF050300 Type VMF5 – L300mm – Holding field 140mm – Ferrite magnet
• SVMF050350 Type VMF5 – L350mm – Holding field 140mm – Ferrite magnet
• SVMF050400 Type VMF5 – L400mm – Holding field 140mm – Ferrite magnet
• SVMF050500 Type VMF5 – L500mm – Holding field 140mm – Ferrite magnet
• SVMF050600 Type VMF5 – L600mm – Holding field 140mm – Ferrite magnet
• SVMF050700 Type VMF5 – L700mm – Holding field 140mm – Ferrite magnet
• SVMF050800 Type VMF5 – L800mm – Holding field 140mm – Ferrite magnet
• SVMF050900 Type VMF5 – L900mm – Holding field 140mm – Ferrite magnet
• SVMF051000 Type VMF5 – L1000mm – Holding field 140mm – Ferrite magnet

Available articles neodymium:

• SVMN010140 Type VMN1 – L140mm – Holding field 80mm – N35 magnet
• SVMN010210 Type VMN1 – L210mm – Holding field 80mm – N35 magnet
• SVMN010270 Type VMN1 – L270mm – Holding field 80mm – N35 magnet
• SVMN010300 Type VMN1 – L300mm – Holding field 80mm – N35 magnet
• SVMN010340 Type VMN1 – L340mm – Holding field 80mm – N35 magnet
• SVMN010400 Type VMN1 – L400mm – Holding field 80mm – N35 magnet
• SVMN010500 Type VMN1 – L500mm – Holding field 80mm – N35 magnet
• SVMN020150 Type VMN2 – L150mm – Holding field 180mm – N35 magnet
• SVMN020200 Type VMN2 – L200mm – Holding field 180mm – N35 magnet
• SVMN020250 Type VMN2 – L250mm – Holding field 180mm – N35 magnet
• SVMN020300 Type VMN2 – L300mm – Holding field 180mm – N35 magnet
• SVMN020350 Type VMN2 – L350mm – Holding field 180mm – N35 magnet
• SVMN020400 Type VMN2 – L400mm – Holding field 180mm – N35 magnet
• SVMN020500 Type VMN2 – L500mm – Holding field 180mm – N35 magnet
• SVMN030150 Type VMN3 – Incl flange – L150mm – N35 magnet
• SVMN030200 Type VMN3 – Incl flange – L200mm – N35 magnet
• SVMN030250 Type VMN3 – Incl flange – L250mm – N35 magnet
• SVMN030300 Type VMN3 – Incl flange – L300mm – N35 magnet
• SVMN030350 Type VMN3 – Incl flange – L350mm – N35 magnet
• SVMN030400 Type VMN3 – Incl flange – L400mm – N35 magnet
• SVMN030500 Type VMN3 – Incl flange – L500mm – N35 magnet