In short lines . Give a step by step method which you will adopt to test if a piece of magnetic material is a magnet
Answers
Like many other industries, the food manufacturing sector is adopting more technology each year with an eye toward increasing productivity while adhering to stringent food safety guidelines, especially in the wake of tougher federal regulations.
While productivity is the end goal for any company in the private sector, the food packaging industry faces unique challenges to meets its objectives. Regulations coming from the U.S. Food and Drug Administration (FDA) and U.S. Department of Agriculture (USDA) and the respective Hazard Analysis and Critical Control Point (HACCP) programs are pushing liability into food processors’ laps.
Food processors invest millions of dollars annually into magnetic separation equipment, proactively reducing the risk that any foreign object or contaminant will be embedded into a food product sold to grocery stores, restaurants, retailers or general consumers.
Attention to product purity on the production line has never been greater, creating the need for food processors to detect and eliminate foreign objects before the end product reaches the consumer. Eliminating contaminant metal also prevents damage to machinery, saving downtime and repair costs.
The use of permanent magnetic separators helps draw out fine tramp metal along critical points of the production line. These separators come in different styles and in various magnetic strengths, depending upon the application. Periodically, they all need to be tested to monitor magnet performance.
Most industrial magnet manufacturers have adopted standard test equipment that measures the holding force of a magnet. Periodic testing of magnets helps determine whether a magnet needs to be repaired, upgraded or replaced. Here are some rules to follow to make sure you are using standard operating procedure when field testing magnetic strength to attain the most accurate results.
Which magnets get tested?
In most cases, smaller permanent magnets should be subjected to semi-annual pull testing to assess magnetic strength. These permanent magnets include:
Magnetic Plates — Function: Protect against medium and small-size contaminants. They are installed in chutes, spouts, ducts and in suspension over non-magnetic conveyors and screens.
Magnetic Grates — Function: Remove small and fine tramp iron from dry and free-flowing products. They are designed for steep-sloped hoppers, even with odd and irregular shapes, floor openings, vertical closed chutes and ducts.