Tubular tungsten carbide welding rods are a type of welding consumable used for hardfacing applications. They are made by filling a tubular steel rod with a mixture of tungsten carbide particles and a binder material. Welding Rod,Welding Rod Price,Best Welding Rods,Tungsten Welding Rod Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcthermalspray.com
"We have developed the world's first transistor logic circuit driven by thermal signals rather than electrical signals," said Professor Xavier Crispin of the Organic Electronics Laboratory at Linköping University.
This thermal drive transistor enables many new applications such as minimal temperature difference detection and functional medical dressings that can monitor the wound healing process.
The thermal sensitivity of this transistor is a hundred times higher than that of conventional thermoelectric materials, which means that it is sufficient to connect the thermosensitive electrolyte (as a sensor) and the transistor circuit only. A sensor combines a thermal drive transistor to create a "smart pixel."
This smart pixel array can replace the current sensor used to detect infrared radiation. With further development, this new technology can create a new type of low-cost thermal imager for smart phones because the materials needed for the technology are neither rare nor expensive, and they are harmless.
The thermal drive transistor is based on a supercapacitor study a year ago that uses solar rays for charging. In this supercapacitor, heat energy is converted into electrical energy and stored in a capacitor for use.
Researchers at the Organic Electronics Laboratory at Linkoping University have explored a variety of conductive polymers to create a liquid electrolyte that has the ability to convert temperature gradients into voltages that are hundreds of times greater than those used in the past. This liquid electrolyte consists of ionic and conductive polymer molecules. Its positive ions are smaller and move faster, while negatively charged polymers are larger and heavier. When one end of the electrolyte is heated, the smaller positive ions move quickly toward the cold end, creating a voltage difference.
"When we confirmed that this capacitor was operational, we began to look for other applications for this new type of electrolyte," said Professor Xavier Crispin.
The research results have been published in the recent "Nature Communications" magazine.
(Original title: The world's first heat-driven transistor promises to create a new low-cost thermal imager for smartphones)
The tungsten carbide particles provide exceptional hardness and wear resistance, making them suitable for applications where the welded surface needs to withstand high levels of abrasion, erosion, or impact. The binder material helps to hold the tungsten carbide particles together and facilitate the welding process.
Tubular tungsten carbide welding rods are typically used in industries such as mining, construction, oil and gas, and agriculture, where equipment and machinery are subjected to harsh operating conditions. They can be used for hardfacing various components, such as drill bits, crusher hammers, wear plates, and cutting tools.
The welding process for tubular tungsten carbide rods is similar to other types of welding, such as shielded metal arc welding (SMAW) or gas tungsten arc welding (GTAW). The rods are typically welded using a high heat source, such as an electric arc, to melt the rod and create a strong bond with the base metal.
Overall, tubular tungsten carbide welding rods are a popular choice for hardfacing applications due to their exceptional hardness and wear resistance properties. They help extend the lifespan of equipment and machinery, reducing maintenance costs and downtime.
Sweden develops thermal drive transistor for thermal imager
According to the consulting report of Mems, the researcher Dan Zhao and Simone Fabiano of the Linkoping University's Organic Electronics Laboratory in Sweden developed the world's first thermoelectric organic transistor, and the temperature can be changed by only one degree. A detectable current modulation is produced in this transistor. Using this transistor, a circuit controlled by the thermal drive of infrared light is manufactured, which can be applied to other applications such as a thermal imager.