Pit-Type Gas Nitriding Furnace
※ Equipment Application
This furnace is an energy-saving periodic operation furnace independently developed by our company, focusing on high-precision gas nitriding heat treatment processes. It is mainly applicable to the surface strengthening of various workpieces such as steel mechanical parts, automobile crankshafts, automobile piston rings, motorcycle brake pads, and precision molds. The operating temperature is accurately controlled at 650℃. After treatment, the surface hardness, wear resistance, and corrosion resistance of workpieces are significantly improved, effectively extending the service life of products.
The product adopts an energy-saving furnace lining + double water-cooled furnace pot cover design, combined with a vacuum rubber sealing structure and upper-lower zone independent temperature control or multi-zone precision temperature control system, whose core performance reaches the advanced level in the industry. The equipment shell is welded with high-quality steel plates and section steels, featuring high strength and excellent sealing performance. The furnace lining is built with 0.6g/cm³ ultra-light and high-strength energy-saving refractory bricks; the outer layer is compounded with aluminum silicate fiber felt, and the middle layer is filled with expanded vermiculite powder to form a triple thermal insulation structure. Compared with traditional equipment, its thermal insulation efficiency is improved by more than 40%, greatly reducing energy consumption.
The heating element is made of high-temperature resistance wire wound into a spiral shape, which is accurately installed on the furnace lining support bricks to ensure uniform and stable heat generation. The furnace cavity is equipped with a high-quality stainless steel furnace pot to ensure a clean heat treatment environment. The furnace cover is equipped with a double-head stainless steel dropper for precise methanol dripping; combined with the built-in hot air circulation system, it realizes the uniform distribution of temperature and atmosphere in the entire furnace (uniformity error ≤ ±1℃). The furnace cover integrates a sampling pipe and an exhaust pipe; the upper part of the furnace pot sidewall is provided with a dedicated ammonia input pipe. The furnace pot and furnace cover are fixed with water-cooled vacuum rubber seals + compression bolts, providing excellent sealing performance and effectively preventing ammonia leakage. Waste gas in the furnace is centrally treated through the exhaust pipe and discharged up to the standard, achieving environmental protection and no pollution.
※ Equipment Features
- Equipped with a built-in intelligent hot air circulation device and matched with a multi-zone temperature control system, the uniformity error of temperature and atmosphere in the furnace is ≤ ±1℃, ensuring the consistency of workpiece heat treatment.
- Adopting the full-process atmosphere protection technology, workpieces have no deformation, no oxidation, and no decarburization, with high surface finish. This can reduce subsequent processing procedures and save raw materials and production costs.
- The furnace pot cover adopts an electric hydraulic lifting system, which lifts and lowers stably without jitter, with precise positioning and easy operation. It is also equipped with an anti-fall safety device.
- Core components such as the furnace pot, charging basket, and fan are made of high-quality heat-resistant alloy steel, which is resistant to high temperature and corrosion. Their service life is extended by more than 30% compared with ordinary materials.
- Configured with a rapid cooling device, the cooling rate can be adjusted on demand (the maximum cooling rate reaches 15℃/min), which greatly shortens the production cycle and improves production efficiency.
- Equipped with a comprehensive interlock protection device (including over-temperature protection, abnormal ammonia pressure protection, furnace cover non-sealing protection, etc.), it effectively avoids faults and safety accidents caused by misoperation.
- No pollution and no exhaust gas exceeding the standard, with significant environmental benefits, complying with strict domestic and international environmental standards.
- Added an intelligent temperature control system with a touch-type operation panel, supporting temperature curve storage and historical data tracing, realizing automatic precise control and reducing manual intervention.
- The furnace body adopts a modular structure design, enabling convenient disassembly and assembly, low maintenance costs, strong versatility of key components, and easy procurement of spare parts.
- Outstanding energy-saving advantages: the triple thermal insulation structure + high-efficiency heating element reduces energy consumption by more than 35% compared with traditional equipment, achieving higher cost performance in long-term use.
- Wide adaptability: supports customized furnace pot sizes and process parameters, meeting the nitriding needs of workpieces of different specifications and flexibly responding to diversified production scenarios.
※ Design and Manufacturing Certifications
- Strictly designed and manufactured in accordance with industrial furnace standards, all performance indicators meet or exceed standard requirements.
- All components undergo strict performance testing (including sealing performance, temperature control accuracy, safety protection, etc.), supporting on-site pre-acceptance by customers and third-party testing.
- The equipment meets the export requirements of major global markets and can provide complete export certification documents and technical support.
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