Swimming Pool Light Bulbs Halogen – One-hundred-and-thirty years ago, Thomas Edison completed the first successful sustained test of the incandescent light bulb. With a few incremental improvements along the way, Edison’s basic technology has lit the world ever since. This is all about to change. We’re on the cusp of a semiconductor-based lighting revolution that will finally replace Edison’s bulbs using a far more energy-efficient lighting alternative. Solid state LED lighting will gradually replace virtually all of the hundreds of billions of incandescent and fluorescent lights in use around the world today.
To understand just how revolutionary LED light bulbs are as well as why they are still pricey, it’s instructive to look at how they are manufactured and also to compare this to the manufacture of incandescent light bulbs. This article explores how incandescent light bulbs are made then contrasts that process with a description of the normal production process for LED light bulbs. So, let us start by taking a look at how conventional incandescent light bulbs are manufactured. You will find that this really is a classic example of an automatic industrial process elegant in more than a century of expertise.
While human incandescent light bulb types vary in size and wattage, so all of these have the three basic parts: the filament, the bulb, and also the foundation. The filament is made of tungsten. The linking or lead-in wires are generally made of nickel-iron wire. This wire is dipped into a borax solution to make the wire more adherent to glass. The bulb itself is made of glass and has a mixture of gases, generally argon and nitrogen, which raise the life span of the filament. Air is pumped out of the bulb and replaced using the gases. A standardized foundation holds the whole assembly in place. Aluminum can be used on the outside and glass used to insulate the inside of the base.
Originally produced by hand, light bulb manufacturing is now almost entirely automated. |} To begin with, the filament is manufactured with a process known as drawing, in which tungsten is mixed with a binder material and pulled through a die (a shaped orifice) into a fine wire. Next, the wire is wound around a metal bar called a mandrel so as to mold it into its appropriate coiled shape, then it’s heated in a process known as annealing, softening the wire and makes its construction more uniform. Secondly, the coiled filament is attached to the lead-in wires. The lead-in wires have hooks at their ends which are either pressed over the end of the filament or, in larger bulbs, spot-welded.
Third, the glass bulbs or casings are made using a ribbon system. After heating in a furnace, then a continuous ribbon of glass moves along a conveyor belt. Precisely aligned air nozzles blow the glass through holes in the conveyor belt into molds, making the casings. A ribbon machine moving at high speed can produce more than 50,000 bulbs each hour. After the casings are dismissed, they are chilled and then cut off from the ribbon system. Next, the inside of the bulb is coated with silica to remove the glare caused by a glowing, discovered filament. The wattage and label are then stamped on the outside top of each shell.