1940s the dairy industry began extensive use of nickel-containing austenitic stainless steel, but its application can be traced back to 1913, but history. Milk production by improving the efficiency, safety operations and treatment process, stainless steel has been the cost of the product was reduced from baseline 1920s to 2000 100 55.
In Europe herds over twenty million cows dairy companies, stainless steel everywhere, Tarun farm to visit is such a learning experience: 8% nickel S30400
Stainless steel, used in Holstein cows milking equipment, milk delivered to milk cans after the giant pipeline equipment and 18,000 liters of milk a giant tank itself. Further, the washing container is stainless steel, the same stainless steel plate cooler, it makes the milk temperature decreases 15 ° C, then further cooled milk into the milk tank. Even milk collection tanks on carts is made of stainless steel, not to mention those of milk packaging equipment.
Equipment, in addition to rubber, all parts in contact with milk are all stainless steel. Requirements must be resistant to corrosion of stainless steel, which not only take into account the milk itself, but also take into account the local water cleaning chemicals and other factors, around the water is different, each producing 1,000 liters of milk consumed 750-3000 liters of water.
Providing food production and packaging solutions company Tetra Pak, in addition to milk jug, all the equipment freezing liquid milk craft workshop use
S31600 stainless steel, because it has better corrosion resistance. S31600 stainless steel is also suitable for hot milk and cleaning equipment with hot cleaning agents and disinfectants media; Allen Adams Tektronix British company Tetra Pak processing equipment parts sales manager, said dairy farmers milk is heated to blood temperature, use deserted lotion under conditions such media S30400 stainless steel that is has sufficient corrosion resistance.
Stainless steel piping on the milk tanker delivered to coolers that cool the milk to below 4 ° C, then to the volume of 100,000 to 250,000 liter storage compartment. Then piped into the milk separator, at a temperature of 50-65 ° C, the cream and skim milk separation. Back in milk cream is homogenized, and then be separated to prevent mixing. Milk at a temperature of 72-75 ° C was pasteurized, the remaining cream are so treated, then cooled to 2-4 ° C. After entering the volume of 15,000-60,000 liters of finished milk silos. "Sri Lanka too grams said," from where the milk through stainless steel piping systems, and packaged for consumers in glass or plastic bottles or cartons used. "Stainless steel has many features to make today's dairy farmers can not do without the use of stainless steel, of which the main one is cleanability:" Every day we washed once with hot water equipment, stainless steel is the ideal material. "Tarantino said:" It's easier to clean than rubber. "
Nickel in stainless steel crystal structure is a combination of a metallurgical, a thin surface layer of chromium oxide can be seen under the microscope to prevent corrosion. In fact, milk production, storage or distribution process, nickel in stainless steel and are not transferred to the milk. However, with most foods, like milk naturally contains small amounts of nickel.