|Permanent magnets, Temporary magnets, & Electromagnets|
As we will see, different types of permanent magnets have different characteristics or properties concerning how easily they can be demagnetized, how strong they can be, how their strength varies with temperature, and so on.
Permanent magnets can be made in most any shape imaginable. They can be made into round bars, rectangular bars, horseshoes, rings or donuts, disks, rectangles, multi-fingered rings, and other custom shapes. Some are cast into a mold and require grinding to achieve final dimensions. Others start as a powder which is pressed into a mold or pressure bonded or sintered.
There are four classes of permanent magnets:
|Chemicals and Raw Materials|
|Coating Application Equipment for Pipeline|
|Cooling Water System|
|Corrosion & Electrochemical Instruments|
|Corrosion Probes, Coupons and Holders|
|Industrial Coatings and Sealants|
|Laboratory Testing Services|
|Manufacturing and Process Equipment|
|Manufacturing Cells and Systems|
|Optical Components and Optics|
|Surface and Corrosion Protection Products|
|Test and Measurement Equipment|