As a commonly used heat treatment equipment in the heat treatment production industry, the high-yield production type large-diameter tube furnace has the advantages of high output, unmanned operation, multi temperature zone capability, and strong customization ability. It is deeply loved by major enterprises. Let's take a detailed look below!

Large diameter three temperature zone production type tube furnace (click on the picture to view product details)

1. Core advantages: Efficiency, flexibility, and security
Efficient processing capability:
Large diameter design: With a diameter of ≥ 150mm, it can accommodate more samples or large-sized materials (such as rod-shaped materials and ceramic substrates), increasing the processing capacity by 3-5 times and greatly shortening the production cycle.
Long furnace and automated sampling: With a furnace length of over 1200mm, coupled with an automated sampling system, it supports 24-hour continuous operation and is suitable for large-scale industrial scenarios such as powder metallurgy and crystal growth.
Rapid heating and uniform heating: The high-power density design enables a heating rate of 20 ℃/min, and the multi zone independent temperature control technology (3-6 zones) combined with spiral winding or U-shaped heating elements ensures temperature uniformity of ≤ ± 5 ℃ inside the tube, avoiding local overheating or underheating.

Flexible process adaptability:
Wide temperature range: covering low temperature (300 ℃) to high temperature (≥ 1800 ℃), supporting the entire process of material annealing, sintering, crystal growth, melting, etc.

Diverse atmosphere control:
Vacuum environment: equipped with molecular pumps or diffusion pumps, the vacuum degree can reach 10 ⁻² -10 ⁻⁴ Pa, suitable for processes such as metal purification and semiconductor film deposition that require isolation from oxidation.
Gas protection: supports inert gases (N ₂ Ar）、 Introducing reducing gases (H ₂) or reactive gases (CO, NH3) to meet the requirements of catalytic reactions, carbonization treatments, etc.
Positive pressure operation: The pressure resistant furnace tube design (such as stainless steel or high-temperature alloy tubes) can withstand a pressure of 0.02 MPa, suitable for special scenarios such as high-pressure synthesis and gas permeation experiments.

Safety and reliability:
Multiple protection mechanisms: integrated with over temperature alarm, over-current protection, trip protection, leakage protection, and emergency stop button to ensure safe operation.
Explosion proof design: The furnace tube adopts a sealed flange structure at both ends, combined with a pressure relief valve, to prevent the risk of explosion caused by gas expansion at high temperatures.
Quick maintenance: The furnace tube, heating element, and insulation layer are connected with buckles or flanges for quick disassembly and assembly, reducing downtime.

Energy saving and intelligence:
Low energy consumption design: multi-layer composite insulation structure (alumina fiber+ceramic fiber+nano aerogel) reduces heat loss and energy consumption is lower than traditional furnace.
Precise temperature control: PID algorithm combined with fuzzy control technology achieves precise temperature regulation (fluctuation ≤ ± 1 ℃), avoiding energy waste.
Data traceability and remote control: Built in data acquisition module, real-time recording of temperature, pressure, gas flow rate and other parameters, supporting ISO quality system certification requirements; By connecting to a PC or mobile app through IoT technology, remote start stop, parameter adjustment, and fault warning can be achieved.

2. Typical application scenarios
Preparation of new energy materials:
Lithium ion battery positive electrode material: A tube furnace with a diameter of ≥ 200mm can simultaneously process materials weighing over 10kg, and batch prepare positive electrode materials such as NCM and LFP to improve production efficiency.
Semiconductor industry: Silicon wafer annealing is carried out in a vacuum environment, with the diameter matching the wafer size (such as 300mm) to ensure temperature uniformity of ± 5 ℃ and meet high-precision process requirements.

Powder metallurgy and ceramics:
Continuous sintering: With the rotation function, metal powder is uniformly heated to improve product density, suitable for high value-added products such as 3D printed metal parts and hard alloys.
Ceramic substrate sintering: The large tube diameter design can accommodate multiple ceramic substrates, achieving large-scale production and reducing unit costs.

Research and synthesis of special materials:
High pressure synthesis: supports the synthesis of new materials (such as diamond and boron nitride) at a pressure of 0.02 MPa, expanding the boundaries of material research.
Catalytic reaction research: By precisely controlling the atmosphere and temperature, simulating industrial catalytic conditions, accelerating the catalyst development process.

3. Technical parameters and selection suggestions
Pipe diameter: ≥ 150mm (can be customized according to requirements, up to a maximum of 400mm)
Furnace length: 1200-3000mm (supports ultra long furnace design, suitable for continuous production)
Temperature range: 300 ℃ -1800 ℃
Temperature control accuracy: ± 1 ℃ (uniformity of constant temperature zone ≤ ± 5 ℃)
Heating element: resistance type, silicon carbon rod, silicon molybdenum rod (selected according to temperature requirements)
Atmosphere control: Vacuum degree of 10 ⁻² -10 ⁻⁴ Pa; supports the introduction of gases such as N ₂, Ar, H ₂, CO, etc
Pressure range: -0.1MPa (vacuum) to 0.02MPa (positive pressure)
Temperature control method: 30 segment programmable PID control, supporting remote operation via the Internet of Things
Safety design: Over temperature alarm, overcurrent protection, explosion-proof valve, emergency stop button

Selection suggestion:
Large scale production: Priority should be given to models with a pipe diameter of ≥ 200mm and a furnace length of ≥ 2000mm, paired with an automated sampling system.
High precision process: Choose models with independent temperature control in multiple temperature zones (≥ 4 zones) to ensure temperature uniformity.
Special atmosphere requirements: Confirm the sealing and gas inlet capacity of the furnace body, and prioritize selecting models equipped with molecular pumps or mass flow meters.
Budget and maintenance: Balancing equipment costs and maintenance convenience based on production scale, modular design can reduce long-term operation and maintenance costs.

Rotating and tilting large diameter and high-yield tube furnace (click on the picture to view product details)

4. Summary
As a commonly used high-capacity heat treatment equipment in the heat treatment industry, such as sintering and brazing, large diameter production tube furnaces are highly favored by enterprises. Before choosing, it is necessary to communicate the parameters with relevant technical personnel in order to customize tube furnaces that are more suitable for one's own production!Click to learn more tube furnaces! Or click on online customer service to learn more about product information!