Cobalt-based alloy powders are commonly used in plasma transfer arc welding (PTAW) due to their excellent high-temperature properties and resistance to wear and corrosion. These alloys are typically composed of cobalt as the base metal, with various alloying elements such as chromium, tungsten, nickel, and carbon added to enhance specific properties. Co Powder,Cobalt 6 Powder,Cobalt 12 Powder,Cobalt 21 Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcwelding.com
The inductive displacement sensor measures the distance between the sensor head and the target based on the changed oscillation state.
Miharu Inductive Displacement Sensor utilizes two variants of this operating principle.
The eddy3100 series is closer to the sensor head as a target, and the oscillation amplitude and phase difference become smaller from the reference waveform. By detecting the amplitude and phase of the change, the sensor can get a proportional change in the value about the distance between the sensor head and the target.
The amplitude and phase changes and distances are based on the target material. The values ​​are digitized and corrected using a high-precision linearization circuit. The linear output is proportional to the distance between the sensor head and the target.
The eddy3010 series acts as a sensor for the target's approach, with smaller increases in eddy current and oscillation amplitude. The amplitude is rectified and the amplitude change is converted into a change in the DC voltage. With its linearization circuit, the output voltage-distance characteristic is corrected in the EX-200 series to optimize linearity.
The use of cobalt-based alloy powders in PTAW offers several advantages, including:
1. High-temperature strength: Cobalt-based alloys exhibit excellent strength and resistance to deformation at elevated temperatures, making them suitable for welding applications that involve high heat.
2. Wear resistance: These alloys have a high hardness and resistance to wear, making them ideal for welding applications where the welded parts are subjected to abrasive or erosive conditions.
3. Corrosion resistance: Cobalt-based alloys offer good resistance to corrosion, making them suitable for welding applications in aggressive environments, such as those involving chemicals or saltwater.
4. Thermal conductivity: Cobalt-based alloys have good thermal conductivity, allowing for efficient heat transfer during welding and reducing the risk of heat-affected zone (HAZ) defects.
5. Compatibility with other materials: Cobalt-based alloys can be easily welded to a wide range of base metals, including stainless steels, nickel alloys, and other cobalt-based alloys, providing versatility in welding applications.
To use cobalt-based alloy powders for PTAW, the powder is typically fed into the plasma arc using a powder feeder. The powder is then melted by the high-temperature plasma arc and deposited onto the workpiece, forming a weld bead. The specific welding parameters, such as arc current, travel speed, and powder feed rate, will depend on the specific alloy and application requirements.
It is important to note that the selection of the cobalt-based alloy powder should be based on the specific welding application and the desired properties of the final weld. Different cobalt-based a
Induction (eddy current) displacement principle of operation The inductive displacement sensor utilizes a high-frequency magnetic field generated by passing a high-frequency current through the sensor head coil. When a metal target is present in a magnetic field, the magnetic flux path caused by eddy currents perpendicular to electromagnetic induction flows over the surface of the target. This changes the impedance of the sensor head coil.