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.xtcmetalpowder.com
In order to understand the noise of its universal material testing machine products, some professional production companies are equipped with noise detection equipment - sound level meter, and equipped with specialized inspection personnel. However, there are also some private and individual enterprises that do not have sound level meters, or if they do, they do not meet the measurement requirements of the standard, ie, they cannot measure the equivalent continuous sound level, which exposes this blank market. What are the product requirements for this market?
Sound level meters can be classified into general sound level meters, vehicle noise sound meters, pulse sound level integrated sound level meters, noise exposure meters (dosimeters) and statistical sound level meters according to their use. According to its accuracy can be divided into 0 type, type 1, type 2 and type 3 four types. Among them, type 0 sound level meter is mainly used as a laboratory reference standard; type 1 sound level meter is used in places where the laboratory and acoustic environment can be strictly controlled; type 2 sound level meter is suitable for general measurement use; type 3 sound level meter is mainly used. Used for on-site noise surveys. China's currently used standards for test testing are GB16710.1 and GB/T16710.2-5, which stipulate that the test instrument used is a type 1 instrument with integral function.
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
In the field of construction machinery testing, noise measurement has been listed as a national mandatory standard test item, that is, if the noise fails to meet the requirements of the national standard, the entire machine is judged as unqualified. If the previous construction machinery manufacturing enterprises did not attach much importance to noise control, then due to the promulgation and implementation of strong targets, each tension testing machine company has fully realized the importance of noise measurement, and has taken noise reduction measures in an effort to Noise is limited to the scope of the standard.