1 Axial type bimetal thermometer: The pointer plate is vertically connected to the protective tube. 2 Radial type bimetal thermometer: The pointer plate is connected in parallel with the protective tube. 3135° bimetal thermometer: The pointer plate is connected to the protective tube at 135°. 4 universal type bimetal thermometer: The connection angle between the pointer plate and the protection tube can be adjusted arbitrarily. Bimetal thermometer installation fixed form In order to meet the needs of actual production, bimetal thermometers have different mounting and fixing forms: movable male thread fittings, movable female thread fittings, fixed thread fittings, ferrule thread fittings, ferrule flange fittings and fixing flanges. Bimetal thermometer model nomenclature WSS □ □ □ □ - Protective form None - Normal Mounting method W-protected 0-No Fixture F-Anticorrosive Structure type 1 - movable external thread 0-Axial Type 2 - Movable female thread 1-radial type 3-fixed thread 2-135° 4-way thread 3-Universal 5-thread thread Case nominal diameter 6-set flange 3-φ60 4-φ100 5-φ125 The temperature sensing element is a bimetallic metal expansion temperature meter Iron-based alloy powder is commonly used in plasma transfer arc welding (PTAW) due to its excellent mechanical properties and high resistance to corrosion and heat. This type of powder is typically composed of iron as the base metal, along with various alloying elements such as nickel, chromium, molybdenum, and tungsten. Fe Alloy Powder,Stainless Powder,High Temperature Powder,Iron Base Pta Welding Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.hvofpowders.com
The specific composition of the iron-based alloy powder may vary depending on the desired properties and application requirements. For example, adding nickel can increase the strength and toughness of the weld, while chromium enhances the corrosion resistance. Molybdenum and tungsten are often added to improve the high-temperature strength and creep resistance of the weld.
Iron-based alloy powders for PTAW are available in various particle sizes, typically ranging from a few micrometers to several hundred micrometers. The powder is usually fed into the plasma arc through a powder feeder, which ensures a controlled and consistent supply of powder during the welding process.
During PTAW, the powder is melted and deposited onto the workpiece, forming a weld bead. The high energy plasma arc provides the heat necessary to melt the powder and the base metal, creating a strong and durable weld joint.
Overall, iron-based alloy powder for plasma transfer arc welding offers excellent weldability, high mechanical properties, and resistance to corrosion and heat, making it suitable for a wide range of applications in industries such as aerospace, automotive, and power generation.
The connection direction of the bimetal thermometer dial and protection tube can be divided into four types: axial type, radial type, 135° type and universal type.