Halogen is late eighties successfully developed a new type of light source. It has a high luminous efficiency, small size, light weight, long life and other characteristics.

To make this small volume, high luminous efficiency light source is effectively a new application, the researchers turn into one kind of small halogen bulb made ​​of quartz glass with cold cup. The shape shown in Figure 2-8-2. The quartz glass halogen bulb cold cup and a combination of light called "quartz cold spot" (commonly known as cold light source, or cold light). It has a cold. Light into a beam angle of cold cup can
choose according to need, with a range of functions. Ordinary incandescent match.

Therefore, this light spotlights widely used in store mall counters. Windows for illumination and lighting effects.
Recent years due to the improvement of people's living standards, living conditions continue to improve. EL lighting decoration in the home has become increasingly popular. To enable people to live and work life, EL lighting is also widely used security products.

As cold working voltage spotlights are low voltage, 6V, 12V, power 20W, 50W, so in actual use step-down transformer must be used, generally 50W, 12V inductive transformer its large size and weight too, should not be in the mall lot of use. For this reason, scientists have launched an electronic transformer, which is characterized by: small size, light weight, low cost, easy to use and so on. Disadvantages are: electromagnetic interference (can increase its interference absorption circuit absorption). Electronic transformer circuit diagram: (12 * 8cm)
Working principle is basically the same, and electronic ballasts that the output voltage is reduced by the ferrite transformer isolation to the point of contingent Designed 12V.


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HIP (hot isostatic pressing)

1, HIP Treatment Summary

Powder metallurgy method is easier than the melting alloy is formed within the pores, although with advances in manufacturing technology, has been able to produce almost no pores, but at high pressure processing conditions of use, although the internal micropores is small, can make carbide tools damaged. In addition, for users that require extremely high reliability requirements, can be found in the existing material based on the increase HIP treatment, especially for the semiconductor industry uses progressive die, pin punch, encapsulation molds blanks, require a high material stability. Daijie the company 20 years ago to eliminate the use of the most advanced internal micropores HIP equipment to produce no internal defects of high quality carbide.

2, HIP Treatment Principle

HIP treatment is the principle of high temperature and pressure carbide placed in an argon atmosphere, so that destruction of the internal micropores, by changing the working conditions, HIP can significantly improve the bonding strength of carbides in the less binding agent timber species HIP better show results.


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Halogen is thermal radiation source, the working principle is basically the same as with ordinary incandescent lamp, the structure has a larger difference. The most prominent difference is within the halogen bulb containing part of the gas filled halogen element or halides.

Halogen light efficiency higher (about 18 ~ 21lm / W), the lower the color temperature is generally 2700 ~ 3300K, CRI high color rendering index Ra 99 to 100.

Halogen Structure

Is a tungsten filament halogen, halogen-filled glass bulb and the lamp, and the like. Halogen lamp with double-ended, single-ended and double blister of the points;

Halogen Free

1 Press the charge into different halogen bulb for tungsten and bromine tungsten lamp;

2 Press the bulb housing material can be divided into hard glass halogen lamps, halogen quartz glass;

3 halogen at work can be divided into high and low voltage halogen mains (220V) and low voltage-halogen (6V, 12V, 24V);

4 halogen lamp according to the different structure can be divided into double-ended, single-ended halogen;

Halogen Works

When filled with halogen bulb powered substances when working out of the tungsten evaporates from the filament, and halogen compounds, forming a volatile halogen compounds. Halogen compound diffusion in the lamp, when spread to the area around a hot filament, a halogen compound into a halogen and tungsten, tungsten deposited on the release of the filament, and then continue to diffuse into the halogen lower temperature bulb wall region and tungsten compounds, forming halogen cycle.

Halogen Applications

Should pay attention to the following questions:

Halogen does not apply to low-temperature applications. Double ended halogen work, the lamp should be installed horizontally, tilted at an angle not more than 40, otherwise it will shorten its life; addition, since the halogen filament thin and crisp, halogen used, to avoid vibration and impact, and it is not as mobile lighting fixtures.


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Carbide, chemical formula WC, by its own physical properties, hardness comparable to diamond, is widely used to produce cutting tools and wear-resistant member.

Production of tungsten carbide mixed into materials, carbonation, milling, screening, testing, and several other steps.

1, the Material Mix: the tungsten powder was mixed with carbon black. Depends on the quality of tungsten carbide powder tungsten powder mixed with carbon black uniform extent that if uneven mixing of materials, tungsten carbide powder will appear sinister and stratification. Cemented carbide manufacturing process, in general, the tungsten powder and carbon black were mixed in a ball mill (ball to powder ratio of 1:1, the ball diameter is 35 ~ 50mm), milling time is 2 ~ 4h, no material with the naked eye stratification that is considered mixed.

2, Carbonized Material: tungsten carbide powder, usually in the graphite tube furnace, carbonization process according to the granularity of tungsten powder and tungsten carbide particle size requirements to select, in general, fine tungsten powder carbonization temperature of 1300 ~ 1350 ℃, coarse tungsten powder carbonization temperature of 1600 ℃, carbonization time is 1 ~ 2h.

3, Ball: in a ball mill for milling. Ball to powder ratio of 1:1, the ball diameter is 10 ~ 45mm, milling time according to process requirements, usually 2h.

4, the Screening: In order to prevent the powder from flying, sieved to be carried in a closed case, the fine particles of tungsten carbide through 200 mesh sieve, the particles through a 250 mesh tungsten carbide, tungsten carbide coarse particles through a 60 mesh sieve.

5, After passing inspection derived products.


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