Large-Scale Flat-Top Lifting-Type Double-Cathode Ion Nitriding Furnace

※ Equipment Purpose

※ Structural Features

• Furnace Body Structure: Adopts a large-scale flat-top design, with a liftable furnace cover for convenient loading and unloading of workpieces. The furnace body is usually made of high-quality steel, featuring excellent airtightness and strength to withstand high temperatures and vacuum environments.
• Double-Cathode System: Equipped with two cathodes, it can perform nitriding treatment on two workpieces or a set of large workpieces simultaneously, improving production efficiency. The cathodes adopt a special material and structural design, which can evenly distribute the ion current and ensure the consistency of nitriding effects.
• Lifting System: Composed of a motor, lead screw, guide rail, etc., it can realize the stable lifting of the furnace cover. The lifting speed can be adjusted as needed, usually ranging from several centimeters to dozens of centimeters per minute.
• Heating System: Generally adopts resistance heating or electromagnetic induction heating methods, which can quickly raise the temperature inside the furnace to the required nitriding temperature with good temperature uniformity.
• Vacuum System: Includes a vacuum pump, vacuum pipeline, vacuum valve, vacuum gauge, etc. It can evacuate the furnace to a high vacuum state, creating a good vacuum environment for ion nitriding. The ultimate vacuum degree can usually reach the level of 10⁻¹Pa ~ 10⁻³Pa.
• Gas Supply System: Equipped with multiple gas supply pipelines and high-precision flowmeters, it can accurately control the flow rate and pressure of nitrogen-containing gases (such as nitrogen, ammonia gas, etc.) introduced into the furnace to meet different nitriding process requirements.
• Temperature Measurement and Control System: Multiple temperature measuring elements such as thermocouples are inserted into different positions inside the furnace for temperature measurement. The temperature signals are fed back to the temperature control instrument to realize precise control of the temperature inside the furnace, with a temperature control accuracy of ±1℃ ~ ±5℃.

※ Working Principle

※ Technical Parameters

• Furnace Chamber Size: According to different production needs, the diameter of the furnace chamber can reach more than 2000mm, and the depth of the furnace chamber can reach more than 3000mm, so as to meet the nitriding treatment of large workpieces.
• Temperature Range: The commonly used working temperature is generally 500℃ ~ 650℃, and the maximum working temperature can reach about 700℃, which can meet the ion nitriding temperature requirements of most metal materials.
• Power Supply Parameters: The output voltage is generally continuously adjustable from 0V to 1000V. The output current varies according to different equipment models, with common ones being 100A, 150A, 200A, etc. The frequency is usually below 100Hz.
• Vacuum Degree: The ultimate vacuum degree can usually reach 10⁻¹Pa ~ 10⁻³Pa, and the pressure rise rate is ≤0.67Pa/h to ensure the stable vacuum environment inside the furnace.
• Gas Flow Rate: The flow rate of nitrogen-containing gas introduced into the furnace can be accurately controlled, usually adjustable in the range of 0-1000L/h.
• Gas Pressure: The gas supply pressure is generally between 0.1MPa and 0.5MPa to ensure that the gas can be evenly distributed in the furnace chamber and fully contact with the workpiece.
• Lifting Speed: The lifting speed of the furnace cover is generally between 5cm and 20cm per minute, which can be adjusted according to actual needs.

※ Performance Advantages

• High Production Efficiency: The double-cathode design can process multiple workpieces at the same time, greatly improving production efficiency and reducing processing time and costs.
• Good Nitriding Effect: The double-cathode system can make the ion current more evenly distributed on the workpiece surface, thereby obtaining a more uniform and dense nitrided layer, and improving the surface hardness, wear resistance and corrosion resistance of the workpiece.
• Convenient Operation: The liftable design of the furnace cover makes the loading and unloading of workpieces more convenient and fast, reducing the difficulty of manual operation and labor intensity. At the same time, the equipment is equipped with an advanced control system, which can realize automatic operation and improve the stability and reliability of the production process.
• Wide Application Range: Suitable for the nitriding treatment of various shapes and sizes of carbon steel, alloy steel, stainless steel, die steel, titanium alloy and other metal workpieces, especially suitable for the treatment of large and complex-shaped workpieces.

※ Technical Parameters