Bi-metal and its usage.
The Billet Aluminium strips and plates are renowned as they change over an increase or decrease in temperature. As it is Bimetallic strips (containing two different strips), the metals are heated at two different rates. These strips are usually copper and steel exceptional of the times when it is steel and brass. Through riveting, welding and brazing the strips are joined throughout the length. When the strip is further heated it bend on one side as the expansion of both strips are different. The placement of these strip is done in such a way that the strip with higher coefficient thermal expansion is placed outside while heating and vice versa while cooling. The Bimetallic Strips finds application in clocks, thermostats, thermometer and Electrical devices.
The Bimetallic strip is used in mechanical clock to avoid errors, as they are sensitive to temperature changes. A thermostat uses a bimetallic strip that is attached to the electrical power source while the end carries an electrical contact. In case of a thermometer, the bimetallic strip is wrapped into a coil where one end is fixed to the housing of device while the other becomes an indicating needle. This strip also comes handy in recording thermometer. These strips play a major role in Electrical devices. Bimetallic strips are used as circuit breakers and protect it from excess current.
A bimetal blade is made of high-speed steel and the body portion is made of string. These two portions of blade are welded properly to make it one. The edge of these blades is sharp and is longer as compared to the carbon blade. The benefit of having a spring steel body is that it allows the blade to bend without breaking that is very common with carbon blade.
A renowned group, Metenere Limited, have been a successful Bi Metal manufacturers in india and of metals like lead and aluminium since 1989. The founder if this group Mr. Raman Gupta, have worked hard in spreading the organization in India which also covers international market. At India, the company has five manufacturing plants, which includes Dadri, Uttar Pradesh, Damtal, Himachal Pradesh, Kathua, J&K, Samba and Gujrat.
The branches of this company across state are well equipped with smelting, refining and casting capabilities and are involved in recycling of battery scraps, lead concentrate, re-melted lead ingots and lead scrap radio.