Energy Efficient Industrial Metal Melting Furnace Manufacturers

Zhejiang Nengcheng Crystal Fiber Co., Ltd.

Zhejiang Nengcheng Crystal Fiber Co., Ltd. was established in 2015. It is a professional enterprise that develops and produces ultra lightweight energy-saving high-temperature materials, and sells experimental electric furnaces, industrial electric furnaces, and non-standard customized electric furnaces. Industrial Electric Furnace Manufacturers and Metal Melting Furnace Factory. The company adheres to the principle of "survival through quality, development through reputation" and upholds the business philosophy of "practicality, integrity, and efficiency". We are committed to providing comprehensive and high-quality equipment solutions for customers in industries such as ceramics, metallurgy, electronics, glass, and chemical engineering. We also provide services such as powder roasting, ceramic sintering, and high-temperature experiments to universities, research institutes, and industrial and mining enterprises. Supply Custom Energy Efficient Industrial Furnace. At the same time, we are also striving to promote the strategic development of Nengcheng's lightweight, energy-saving, and environmentally friendly high-temperature alumina fiber in the field of new furnaces, and strive to become an internationally leading advanced high-temperature equipment industry service provider.

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Industrial Furnace manufacturer with in-house refractory technology

Zhejiang Nengcheng Crystal Fiber Co., Ltd. is an Industrial Furnace manufacturer based in Zhejiang, China, that integrates design, research and development, production, sales and engineering services in one organization. Since 2015 we have supplied experimental electric furnaces, industrial electric furnaces and non-standard customized electric furnaces to customers in ceramics, metallurgy, electronics, glass and chemical engineering, as well as to universities and research institutes.

We also produce the ultra-lightweight high-temperature fiber insulation used inside furnace hot zones. That is why our configurations are engineered as a matched system — insulation, heating elements, vacuum components and controls are selected together for the target process, not assembled from unrelated parts.

Our Industrial Furnace Range

The product family is organized into three sub-categories. Each has a different geometry and atmosphere concept, and each is available as a standard model or a custom design.

Vacuum Electric Furnace

This group covers 16 models, including vacuum molybdenum strip furnaces, vertical vacuum brazing furnaces, vacuum tungsten wire furnaces, vacuum carbon tube furnaces, vertical carbon tube furnaces, eutectic furnaces and a range of vacuum annealing furnaces. They process metal parts under oxygen-free conditions to prevent oxidation and scale, producing clean bright surfaces for hardening, brazing, sintering and annealing.

High Temperature Tube Furnace

Our 10 tube furnace models operate from 1200°C to 1700°C in large-caliber, sliding, tiltable rotary, PECVD, swing and vertical arrangements. The cylindrical hot zone gives uniform temperature distribution and accepts inert gas or vacuum, which suits powder roasting, material synthesis, sintering and controlled-atmosphere experiments.

High Temperature Muffle Furnace

Three box-type models rated at 1200°C, 1500°C and 1700°C. The heating elements are isolated from the charge, providing clean, uniform chamber conditions for powder roasting, ceramic sintering, ashing, heat treatment and laboratory testing.

Quick Match: Furnace Range to Process

Range	Temperature	Configuration focus	Typical applications
Vacuum Electric Furnace	Process-specific	Molybdenum strip, tungsten wire or carbon heating; vacuum pumping and atmosphere control	Hardening, brazing, annealing, sintering, clean surface treatment
High Temperature Tube Furnace	1200–1700°C	Horizontal, vertical, rotary, sliding or swing tube; gas or vacuum	Powder roasting, CVD/PECVD, thermal testing, material synthesis
High Temperature Muffle Furnace	1200–1700°C	Box chamber with isolated heating elements	Ceramic sintering, ashing, heat treatment, laboratory experiments

Process and Application Fit

We configure Industrial Furnace equipment around the process environment, not only the maximum temperature. For ceramic and powder applications the priorities are temperature uniformity, controlled heating rate and clean chamber conditions. For metallurgical work we add vacuum or protective atmosphere capability to avoid oxidation and scale during hardening, brazing and annealing. For electronics and semiconductor users we provide tube configurations compatible with process gases, quartz work tubes and precise multi-zone temperature control. Glass and chemical engineering customers typically need repeatable thermal cycles, programmable soak times and resistance to process residues.

Powder roasting and calcination in ceramics and chemical processing
Ceramic and composite sintering up to 1700°C
Vacuum brazing of stainless steel, titanium and alloy assemblies
Annealing of stainless steel, copper alloys and magnetic materials
Sapphire annealing and crystal heat treatment
High-temperature experiments for universities and research institutes

Materials, Critical Specifications and Configuration

Every proposal is based on the working point, material and production target. We establish chamber dimensions, charge weight, working temperature, required uniformity, atmosphere or vacuum level, heating and cooling rates, and cycle time before selecting the hot-zone design. Heating element material is matched to the process: molybdenum or tungsten for vacuum service, carbon elements for graphite hot zones, and resistance wire or silicon-carbide elements for air-operating furnaces. The insulation is selected from our own Nengcheng lightweight alumina and silicate fiber series, which reduces shell temperature, cuts energy consumption and shortens heating ramps.

Controls and Automation Integration

Standard equipment includes a programmable temperature controller with ramp/soak segments, over-temperature protection and thermocouple failure detection. For line integration we supply PLC/HMI control, data logging, and communication interfaces such as RS485 or Ethernet so the furnace can be supervised from a central control system. Vacuum furnaces can be fitted with vacuum gauges, pump interlocks and automatic pressure control. We configure the control system around the required line interface.

Quality Assurance, Acceptance and Documentation

We perform corresponding inspections after each process step, followed by a full inspection of the finished furnace according to customer requirements and international standards. The company operates ISO9001 and CE quality management systems, and our furnace design details are supported by inspection reports and utility model patents. Factory acceptance typically covers electrical insulation, thermocouple calibration, heating performance, temperature uniformity and vacuum integrity before shipment.

Information We Use to Configure Your Solution

To prepare a configuration and quotation we need the following project information:

Working temperature, temperature uniformity and heating/cooling rates
Chamber or working-zone dimensions and maximum charge weight
Workpiece material and heat-treatment process
Atmosphere: air, inert gas, reducing gas, or required vacuum level
Production throughput and cycle time
Available utilities: power supply, cooling water, process gas
Control interface: stand-alone operation or PLC/SCADA integration
Documentation, packaging and site access requirements

Service, Spare Parts and Project Support

Our scope continues after the quotation. We provide installation guidance, commissioning support and operator training, and we can adjust the furnace on site to meet the actual process conditions. Our service line also handles repair, modification and relocation of vacuum furnaces, maintenance of imported and domestic vacuum pumps, and supply of spare heating elements, insulation boards and furnace accessories. We reply to inquiries within 12 hours on working days.

Industrial Furnace FAQs

Are you a direct manufacturer or a trading company?

We are a direct manufacturer. Zhejiang Nengcheng Crystal Fiber Co., Ltd. integrates design, R&D, production, sales and engineering services, and our Zhejiang facility produces both the furnaces and the high-temperature fiber insulation used in their hot zones.

What temperature ranges are available?

Muffle furnaces are offered at 1200°C, 1500°C and 1700°C. Tube furnaces span 1200°C to 1700°C in several configurations. Vacuum furnaces are configured by process; provide the working temperature and atmosphere requirements and we will recommend a suitable design.

Can you build non-standard customized furnaces?

Yes. Non-standard customized electric furnaces are a core part of our business. We adjust hot-zone dimensions, heating elements, atmosphere control, vacuum configuration and instrumentation to the specific process and site conditions.

What information do you need for a quotation?

We need the working temperature, chamber size, charge weight, workpiece material, process type, atmosphere or vacuum level, heating and cooling rates, utility availability, and the required control interface. With those inputs we prepare a configuration, layout and quotation.

Do you provide installation and after-sales service?

Yes. We provide installation guidance, commissioning support and operator training, plus repair, modification and relocation services for vacuum furnaces and maintenance of vacuum pumps. Spare heating elements, insulation boards and furnace accessories are available through our service line.

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+86-13967261180

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