Induction Preheating & Post Heating Solutions

KEXIN provides high-performance induction heating systems for industrial applications like forging and hardening. As a leading Chinese manufacturer, we offer reliable, energy-efficient, customizable solutions that ensure precision, durability, and reduced operational costs.

    Induction Preheating & Induction Post Heating

    Induction preheating and post heating are widely applied in welding and manufacturing industries like mining, oil refineries, pipelines, shipbuilding, and structural welding. Preheating involves raising the temperature of the material before welding to reduce thermal stress and prevent cracks. Post-weld heating relieves internal stress to improve weld integrity and durability. This technology also applies to preheating casting molds, injection molding tools, and dies.

    Induction heating delivers precise, fast, and uniform heating. It minimizes energy loss and boosts process efficiency, making it ideal for high-demand industrial applications. Induction heating systems can be tailored for specific manufacturing needs. This ensures accuracy and reliability across production lines.

    Induction Preheating & Post Heating

    What is Induction Preheating & Induction Post Heating?

    Induction preheating uses electromagnetic induction to heat materials before processing. It ensures efficiency in various applications. For instance, cable cores are preheated for insulation extrusion in the wire industry. In metal processing, steel strips are preheated before pickling and zinc coating. This method also prepares pipes for welding and softens metals for bending. Mobile solutions allow for onsite repairs of industrial assemblies.

    In contrast, Induction post-heating occurs after processes like welding, polymer cross-linking, or paint drying. It relieves internal stresses in metal components and welds, improving structural integrity. Additionally, post-heating prepares cable cores after extrusion and facilitates zinc draining. Induction heating delivers precise and uniform temperatures, making preheating and post-heating critical for quality and efficiency in production processes.

    Benefits of Induction for Preheating/Post Heating

    Minimizes Temperature Differences

    Preheating reduces the temperature gap between the welding arc and base material, preventing thermal shock and cracks.

    Slows Weld Cooling Rate

    Induction heating slows down the cooling rate of the weld, reducing the risk of hydrogen embrittlement and failed welds.

    Time Efficiency

     Induction heating is much faster than traditional methods, providing quick setup and operation, resulting in time savings during preheating.

    Flexible Coil Use

    Induction coils are adaptable, capable of heating a wide range of part shapes and sizes with ease.

    Enhanced Safety

    Unlike open flame or resistance heating, induction is safer, with reduced risks of fire hazards or injury.

    Energy Efficient

    The induction process heats the part directly, leading to energy savings and lower overall operating costs.

    Clean Process

    Induction heating is a clean, environmentally friendly method compared to traditional heating techniques.

    Induction Preheating & Post Heating for diverse applications

    Induction preheating before welding

    Induction preheating before welding

    Induction preheating before press

    Induction preheating before press

    Induction preheating of copper wires

    Induction preheating of copper wires

    Induction post-heating of old tools for recycling

    Induction post-heating of old tools for recycling

    Pre and post weld heating with induction

    Pre and post weld heating with induction

    Induction post-heating of steel tubes

    Induction post-heating of steel tubes

    Industries of induction Preheating & Post Heating

    Induction Preheating represents a safe, non-contact, and precise methodology. This sophisticated process entails the intricate interplay of electromagnetic energy and thermal transfer via an induction coil. It is widely used in various industries:

    Automotive Industry

    Wind Turbine Industry

    Induction heating is a precise, non-contact, and highly secure method. This sophisticated process leverages the interplay of electromagnetic energy and heat transfer via an induction coil to melt materials, thereby generating an electromagnetic field.

    Induction heating stands as a secure, non-contact, and highly precise technique. This advanced process involves the complex interaction of electromagnetic energy and thermal transfer through an induction coil. The material undergoes melting when exposed to the induced electromagnetic field.

    Aerospace industry

    Bus & Truck Industry

    Induction heating machines are essential for the servicing of heavy-duty trucks and buses. From bumpers to brakes, components in both passenger cars and commercial trucks demand specialized heat treatment processes. Kexin brand equipment is used to heat treat assembly components, bearings, transmission systems, gears, joints and shafts.

    Manufacturing

    Aerospace Industry

    Induction heating equipment is meticulously engineered to meet the stringent requirements of the aerospace and aviation industry. This technology is essential for executing specialized heat treatments on various aerospace components, ranging from wings to fuselages.

    Kexin brand induction heating equipment is utilized for the precise heat treatment of assembly components, including bearings, brake systems, transmission mechanisms, gears, joints, and shafts.

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    FAQS

    01.What is an induction heating machine?

    Induction heating is a modern and efficient method used for heating materials, primarily metals, through electromagnetic induction. It is widely applied in industrial processes such as hardening, brazing, metal melting, and surface treatment due to its precision, speed, and energy efficiency.

    02.Why should I buy an induction heating machine?

    Induction heating machines are used because they offer efficiency, fast heating, safety, cleanness, and accurate control. They are the fastest method for hardening and heat treating, resulting in minimal distortion and a fine-grain microstructure. Induction heating is accurate, fast, repeatable, and efficient, making it suitable for precise or repetitive operations. It is a rapid, energy-efficient, flameless method of heating electrically conductive materials.

    03.What are the advantages of induction heating machine?

    High efficiency and energy saving.  It can save 2/3 of the power than the high frequency of the electron tube.

    Low maintenance costs. No fragile and expensive tubes.

    Special Safety: No high voltage, eliminating the danger of high voltage electric shock.

    Easy to Install: Just connect the power supply and water pipes; it can be completed in 10 minutes.

    Easy operation: user can learn in a few minutes.

    04.How to choose the frequency of induction heating machine?

    For different workpiece materials, sizes and shapes, the frequency will be different accordingly.

    Please send inquiry to us, we will recommend the optimal induction heating machine on your request.

    05.How to choose the cooling system for induction heating machine?

    We will recommend the most suitable cooling system based on different heating requirements.

    06.Do I need to buy a cooling system separately for KEXIN induction heating machine?

    Yes, you can prepare a water tank and a water pump to work as cooling system; Or you can directly prepare a cooling chiller.

    07.How long is the warranty period?

    We provide one-year warranty for the induction heating machines. Even when the induction heating machine is disorder or doesn’t work, you can send videos or photos to us; our engineers will analyze and check out the problems, then provide the spare parts to you for replacement. And we provide life -long technical support and other assistance.

    08.Why is induction heating used for preheating/post heating?

    Induction heating is used for preheating to minimize temperature differences between the welding zone and base material, and to slow down cooling rates. For post heating, it helps reduce residual stress and prevent cracking.

    09.How fast is induction heating for preheating/post heating?

    Induction heating is significantly faster than traditional methods like gas or resistance heating, making it ideal for high-speed production processes. Setup times are also quicker, resulting in time savings.

    10. What materials can be preheated or post-heated using induction heating?

    Induction heating can be used on a variety of metals, including steel, aluminum, and copper, to preheat or post-heat materials for welding, hardening, or forming.

    11. Can induction heating be used for large components?

    Yes, induction heating coils are flexible and can be designed to accommodate parts of various sizes, including large components, ensuring even and efficient heating.

    12. What is the energy consumption of induction heating for preheating/post heating?

    Induction heating is highly energy-efficient. Since it directly heats the workpiece, energy consumption is lower compared to traditional methods, resulting in reduced operating costs.

    13. Can induction heating be integrated into existing production lines?

    Yes, induction heating systems can be easily integrated into existing production lines, allowing for minimal disruption and enhanced process efficiency.

    14. Do I need special training to operate an induction heating system?

    Induction heating systems are user-friendly, with minimal learning curves. Operators can quickly master the basics, making it easy to incorporate into a production environment.

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