What is the filament in a light bulb made of?

Tungsten filament, with a melting point of more than 3,000 degrees Celsius, is made into a spiral shape to continuously gather heat, so that the temperature of the filament reaches more than 2,000 degrees Celsius. The higher the temperature of the filament, the brighter the light emitted. Therefore, it is called incandescent lamp.

Edison successively chose boron, calcium and other materials, and the effect was not good, and then he used charcoal filament to make filament, although the filament of charcoal filament glowed, but soon reacted with the oxygen in the air and burned out, Edison turned to metal to look for it, although it was more durable than charcoal filament, but it quickly fused.

After Edison experimented with more than 1,600 materials, he realized that in addition to the filament, it was necessary to solve the problem of filament being oxidized quickly. One day, he thought that the charred cotton thread should burn like charcoal, and then the charcoal light bulb was ready, and it burned for 45 hours.

Edison continued his research, and he carbonized the bamboo filament into a filament, and the bulb was on for 1,200 hours.

Edison's invention of the bamboo wire light bulb has served mankind for more than ten years, and people have continuously improved the bamboo wire, using a metal dock with a high melting point, which has formed the current tungsten wire.

Tungsten filament The melting point of tungsten filament is the highest.

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The filament of the light bulb is made of the metal tungsten. After being energized, the filament heats up, and the temperature is as high as more than 2500. When tungsten metal sublimates at high temperatures, a part of the tungsten metal particles run out of the surface of the filament and settle on the inner wall of the bulb.

Over time, the bulb will turn black, reducing its brightness and affecting the lighting.

According to the downward and upward movement of gas convection, scientists filled the bulb with a small amount of inert gas and made the bulb into a pear shape. In this way, when the inert gas in the bulb is convection, most of the black particles evaporated by the tungsten metal are swept up by the gas and deposited on the neck of the bulb, which can reduce the impact on the surrounding and bottom of the bulb, keep the glass transparent, and keep the brightness of the bulb unaffected.

Summary. A small light bulb may seem simple, but DIY it is not an easy task. 1. The materials needed for ordinary incandescent bulbs are:

Alloy tungsten wire, glass, nitrogen. More important is the processing equipment and processes. Fluorescent lamps require fluorescent tubes and ballasts.

Xenon lamps require a ballast and a xenon bulb. The LED light source needs to be brightened by the LED and the driver circuit. Neon flex requires inert gas tubes and ballasts.

The above are several light sources that are commonly seen in our daily life. There is aluminum alloy: aluminum alloy is a commonly used material in the manufacture of lamps and lanterns, and it is often heard that the mold needs to be opened to make lamps, and the aluminum alloy should be pressed after opening.

There is zinc alloy: but the cost of aluminum alloy is relatively high, and there are some lamps and lanterns that do not have high material requirements can be replaced by zinc alloy, which is slightly heavier in quality, but the cost is relatively cheaper. And the steel plate:

Steel is also a very commonly used material in lamps, it has a wide range of applications, much cheaper than aluminum, and plastic: plastic is just a general term, it includes many types, such as the usual very common PC, PMMA, etc., it is a class of polymers. Mirror aluminumMirror aluminum material is unique to the lighting industry, and other products are rarely used.

Hello! We're glad to answer your questions! Hello, the materials needed to make light bulbs are commonly used glue, electric drills, pliers, cutting knives, wires, pencil leads, hollow screws.

Ordinary incandescent bulbs need to be rented and sold in the following materials: alloy tungsten wire, glass, nitrogen. More important is the processing equipment and processes.

Fluorescent lamps require fluorescent tubes and ballasts. 3. Xenon lamps need a ballast and a xenon bulb.

A small light bulb may seem simple, but DIY it is not an easy task. 1. The materials required for ordinary incandescent bulbs are: alloy tungsten wire, glass, and nitrogen.

More important is the processing equipment and processes. Fluorescent lamps require fluorescent tubes and ballasts. Xenon lamps require a ballast and a xenon bulb.

The LED light source needs to be brightened by the LED and the driver circuit. Neon flex requires inert gas tubes and ballasts. The above are several light sources that are commonly seen in our daily life.

There is aluminum alloy: aluminum alloy is a commonly used material in the manufacture of lamps and lanterns, and it is often heard that the mold needs to be opened to make lamps, and the aluminum alloy should be pressed after opening. There is a zinc alloy:

However, the cost of aluminum alloy is relatively high, and some lamps and lanterns with low material requirements can be replaced by zinc alloy, which is slightly heavier in quality, but the cost is relatively cheaper. There is also steel plate: steel is also a very commonly used material in lamps, it has a wide range of applications, much cheaper than aluminum, and plastic:

Plastic is just a general term, it includes many types, such as the very common PC, PMMA, etc., it is a class of polymers. Mirror Aluminum Mirror Aluminum Roller Stove Material is unique to the lighting industry, and other products are rarely used.

The filament of a light bulb is a metal wire, usually tungsten, inside the bulb. When a bulb is energized, an electric current passes through the filament, causing it to heat up and emit light. The function of the filament is to convert electrical energy into athermal energy and light energy, which makes the bulb glow.

Since tungsten filament has a high melting point, it can withstand high temperatures, allowing the bulb to emit light for a long time. However, the heating of the filament will also cause the life of the bulb to shrink and shorten, because the filament will gradually evaporate and burn, eventually causing the filament to break, and the bulb will lose its luminous function.

Luminous. The filaments of the filaments and bulbs are all high-temperature resistant metal wires, mostly made of fine tungsten wires, and iridium or their alloys are also used.

When energized, it can directly emit light and generate heat, or emit electrons, ultraviolet rays, form high-energy electric fields or produce high-energy rays, etc., and excite fluorescent substances, rare gases, or form plasma, etc., to produce various colors of visible light.

The earliest white stool brigade incandescent filament was experimentally invented by Edison. After being energized, the pure resistive electrical appliances that convert electrical energy into internal energy and then into light energy are mainly converted into light energy.

Hope it helps.

The filament is the core component of the bulb, and its role is to convert the electrical energy of the hood into heat and light energy. The filament is made of a metal called tungsten, which converts electric current into heat energy from the side-rulers, which produces light in the shed.

<> is mostly fine tungsten wire, but iridium or its alloys are also used. Incandescent lamps do not have filaments, but only a layer of compound on the surface of the bulb. The filament can emit light and heat up when it is energized, forming a high-energy electric field or producing high-energy rays, etc.

The earliest filament used was bamboo filament, and the composition of bamboo filament after carbonization is carbon, which can conduct electricity. The inside of the bulb should be vacuumed to prevent the filament from oxidizing and denaturing and causing the filament to break.

Dear, hello, I am very happy to answer for you: the production method of the bulb is as follows: (1) Place the bell mouth of the glass tube upward, and fix the two sides of the glass tube with clamps; (2) Placing two conductive wires on both sides of the glass tube; (3) Set up a lamp center in the middle of the two conductive wires; (4) Heating the bottom of the glass tube with a heater and pressing it with a mold after it is softened; (5) The top of the above-mentioned lamp core is heated again, and when it is softened, the tungsten guide wire is installed at the top of the lamp core with a buckle wire device; (6) At the bottom of the lamp core, heat with a heater and use a blowing device to blow up from the bottom of the lamp core to blow the glass tube at the heating place to form a vent; (7) Fasten the tungsten wires on the three tungsten guide wires placed at the top of the lamp core by means of an automatic wire buckle device; (8) The neck of the lamp shell is sleeved on the flare of the glass tube with a flat bottom by the automatic gripper of the sealing machine, so that the flare of the glass tube is stuck on the neck of the lamp shell; (9) The heater then connects the bottom of the lamp shell with the glass tube to form a bulb, and at the same time removes the excess rough embryo of the lamp shell; (10) Using an air extraction device to pump the air in the bulb into a vacuum, and then fusing the excess core through the heater; (11) The production of plug-in bulbs can be completed by using an automatic foot folding device to fold the two conductive wires extending from the bottom of the glass tube from both sides to the top.

The bulb is made of a tungsten filament attached to a glass sphere and filled with inert gas. Tungsten is a high-temperature resistant metal that reaches an incandescent state when energized to produce high temperatures, thereby emitting luminescence; Because of high temperature resistance, it has a long life, so such a metal is used as a filament, so it is also called an incandescent lamp;

If the filament is in direct contact with the air, it will be oxidized by the oxygen in the air, so that it will be burned out quickly.

Ordinary bulbs are tungsten filaments, if they are incandescent lamps, there is no filament, but a layer of compound is coated on the surface of the bulb, and the filament of the small bulb is also made of tungsten filament.

1.The lamp wire is usually a fine tungsten wire, and iridium or their alloy is also useful. When energized, they can emit light, heat, or emit electrons and ultraviolet light, creating a high-energy electric field where light can be seen in all colors.

2.The resistance of the filament at room temperature can be as high as several hundred ohms. This resistance requires a long length. The bulb can't fit such a long filament, and the heat generated when the current passes through the filament will quickly dissipate, so the filament is spiral-shaped to keep warm or shorten the length.

3.The most common filament emits a warm yellow light, which is relatively cheap, so tungsten bulbs can be matched with a variety of lamps, but tungsten bulbs do not have a long service life and will emit high temperatures, so don't get too close to combustible materials such as paper.

Tungsten filament is suitable for manufacturing filament, impact-resistant filament and other high-temperature resistant devices; W71 tungsten wire is suitable for manufacturing shockproof devices such as filaments; W61 tungsten wire is suitable for manufacturing spiral coil wire.