2021年12月6日星期一

3D Printed Collimators for Physical Optics Enables Lower Costs

A collimator, a device used to transform the diverging light or other radiation from a point light source into a parallel beam. Special measurements in spectroscopy and in geometric and physical optics require this kind of collimation.

The optical collimator consists of a tube. One end of the tube is a convex lens, and the other end is an adjustable aperture. The aperture is located in the focal plane of the lens. The radiation entering the aperture leaves the collimator as a parallel beam, so the image can be viewed without parallax.

3D printed collimators image

The collimator may be a telescope with an aperture at the main focal length of the lens. The light from the light source is focused on the slit through another lens with a similar focal length, and the slit serves as the light-emitting object of the optical system.

In radiology, a collimator is a set of absorbers used to limit X-rays, gamma rays, or nuclear particle beams to the size and angular spread required for a particular application.

The typical manufacturing technology for this product is powder metallurgy + machining process. This process can take months and cost is very high. For complex parts, it is difficult to be processed with traditional method. Now that they can be 3D printed, the same collimators can be manufactured in 5 to 15 days with low costs. 

Moreover, this process can allow for much finer detail in collimator designs, meaning that researchers have the capability to reduce leaks and shape a collimator in unique ways.

3D printed collimators image

The 3D printed collimators could lead to a change in the way collimators are used. Currently, a single collimator is used for a single neutron scattering instrument. Now that collimators can be created quickly and inexpensively, they can be changed and used in different experiments, similar to the use of different sample environments for different experiments.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum. Kindly feel free to contact us if you have got the purchasing plan for 3D printed collimators. 

If you have any inquiry of tungsten collimators, please feel free to contact us:
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2021年12月2日星期四

Pure Tungsten Pins Is Used for Probes and Cathode Emission

Tungsten pins, also named tungsten needles or tungsten electrodes, are a typical tungsten product with purity of 99.95%. It has a silver-white appearance, a slender structure, a length of 20mm-1000mm, and a diameter of 0.3mm-10mm. Usually, the product is customized. 

The pin is mostly made from pure tungsten and sometimes tungsten alloy, with the characteristics of high hardness, greater tensile strength, good wear resistance, excellent ductility, and excellent electrical conductivity. However, if a fine tip is required, it is very easy to bend or break during transportation or using. 

tungsten needle image

These pins can be divided into different kinds of products, such as rod shape or a rod with a sharp tip. Although their characteristics are the same, their applications show slight difference. 

The rod-shaped electrode is a slender cylindrical pure tungsten or tungsten alloy, which is mainly used as an electrode for argon arc welding. During welding, an arc is generated between the tungsten electrode and the workpiece, and under the action of the arc heat, the filler metal will melt with the workpiece to form a weld. 

The pointed needle can be simply understood as pure tungsten or tungsten alloy with a sharp end at one or both ends, and is mainly used as an instrument probe, such as a digital four-probe tester. The distance between the four needles in the digital four-probe tester cannot be too long or too short, and each has different functions.

tungsten pin image

In addition to being used as argon arc welding electrodes and instrument probes, tungsten pins can also be used for cathode emission and for engraving metal surfaces, cutting particles in rubber wool, handling single particles, and blowing crystal embryos and glass.

At Chinatungsten Online, we pride ourselves in offering our customers sophisticated pins/needles machining and fabrication capabilities. We’ve honed our processes during our decades of successfully working with molybdenum and tungsten, and are dedicated to supporting your precision machining and fabrication requirements.

If you have any inquiry of tungsten pins, please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595
Fax: +86 592 5129797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.