Sintering Furnace Series
Technical Selection Topics
covers box furnace, tube furnace, vacuum sintering furnace, atmospheric sintering furnace and ultra-high temperature furnace, providing professional, accurate, efficient and reliable heat treatment solutions for powder metallurgy, advanced ceramics and new energy materials.
Sintering is a heat treatment process that drives diffusion between particles, interfacial migration and pore shrinkage through heat energy at temperatures below the melting point of the material, so that the strength, density and target microstructure of the powder compact are obtained.
From powder feedstock to dense products
The sintering process typically involves forming, heating, holding, and controlled cooling.Reasonable temperature curves and atmosphere determine the final grain, porosity and material properties.
Powder Raw Materials
Compression Forming
High Temperature Sintering
Dense Artifact
Sintering Process Diagram
Temperature Increase/Time Increase → Diffusion Enhancement → Densification and Grain Growth
PRODUCT RANGE
Sintering Furnace Series Product Overview
covers atmospheric pressure, vacuum and protective atmosphere processes, suitable furnace types can be selected according to temperature, furnace structure, charging method and material characteristics.
The core of the selection is not to look at the maximum temperature alone, but to make the material, atmosphere, temperature curve, furnace size and safety requirements form a complete process closed loop.
STEP 01
Clarify Process Requirements
Determine process objectives and target properties such as sintering, annealing, heat treatment or degreasing.
STEP 02
Determine Material Properties
Check material melting point, reactivity, volatiles, oxygen sensitivity and contamination limits.
STEP 03
Select Furnace Configuration
Select the tank, tube or vacuum furnace according to the loading method, batch, vacuum degree and airflow organization.
STEP 04
Determine Control Parameters
Clarify the maximum temperature, heating and cooling rate, uniformity of temperature, holding time and atmospheric flow rate.
STEP 05
Consider Budget and Service
Comprehensive equipment procurement, consumable energy consumption, installation conditions, maintenance cycles and after-sales capabilities.
FURNACE COMPARISON
Comparison of Common Sintering Furnace Types
Furnace type
Critical Temperature/Parameters
Atmosphere
Benefits and Applications
Muffle Furnace (Box Furnace)
Max 1200-1800°C
Air environment
Advantages:Furnace insulation and energy saving, volume coverage of 1–1000 L, strong versatility Material:Metallic, non-metallic and compound materials Application:Conventional sintering, melting, ashing and material analysis
Vacuum Tubular Furnace
Max 1200-1600°C; Operating 1100°C
Vacuum/Permeable atmosphere
Advantages:Sealed flange with quartz or corundum furnace tube, uniform temperature field Material:Metallic Materials, High Temperature Experimental Samples Application:Sintering, Heat Treatment, Quality Inspection and Small Batch Production
Vacuum oven
Up to 1200-1700°C; extreme vacuum -0.1 MPa
N ₂/Ar after pre-vacuuming
Advantages:Fully enclosed furnace reduces oxygen content and stabilizes protective atmosphere Material:Oxygen sensitive materials, semiconductors, silicon nitride, etc. Application:Protective sintering and heat treatment of small batches of materials
horizontal tube furnace
Working 300-1600°C
Vacuum/Inert/Reducing Atmosphere
Advantages:Convenient horizontal charging, precise temperature control and flexible furnace tube configuration Material:Powder, bulk samples and substrates Application:Pyrochemical & Physical Experiments, Atmospheric Heat Treatment
Rotary Tubular Furnace
Max 1200°C; Operating 1100°C
General Environment/Configurable by Process
Advantages:Furnace tube 0–15 rpm rotating, tilting, more even material flipping Material:Inorganic compounds, lithium anode materials, powders Application:Uniform sintering, drying, calcination and continuous heat treatment
Vertical Tubular Furnace
Up to 1200-1600°C; Temperature controlled ± 1°C
Vacuum/Protection Atmosphere
Advantages:Vertical structure with vacuum sealing flange for multi-temperature process Material:Multiple materials and samples Application:Pre-sintering, sintering, coating, pyrolysis and cryogenic deposition
Box Sintering Furnace
Max. 1700°C; Operating 1600°C
Conventional sintering environment
Advantages:Compact and lightweight, 1.5 kW power, heating rate up to 40°C/min Material:Zirconia Dentures, Structural Ceramics and Small Batch Samples Application:Dental Lab & Laboratory Small Batch Sintering
Lifting sintering furnace
Max. 1700°C; Operating 1600°C
Conventional sintering environment
Advantages:Electric lifting platform and four molybdenum silicon rods ring heating, uniform temperature field Material:Zirconia Dentures, Structural Ceramics and Small Batch Samples Application:Dental Denture Crystallization and Small Batch Sintering
PROCESS KNOWLEDGE
Key Sintering Process Considerations
Stable sintering quality comes from synergistic control of five parameters: temperature, atmosphere, time, heating and cooling.
Temperature Control
Reasonably set the heating, constant temperature and cooling sections, and the temperature should not be blindly pursued as high as possible.
Atmosphere Control
Different atmospheres affect the redox state, volatilization behavior and final composition of the material.
Holding Time
The holding time needs to take into account the densification, grain growth and production efficiency.
Heating Rate
Excessive heating may result in cracking, inadequate degreasing, or increased temperature differentials in the furnace.
Cooling Method
Different tissues and residual stresses are created by natural cooling, programmed cooling, or rapid cooling.
APPLICATIONS
Sintering Furnace Applications
From R&D samples to pilot production, match furnace type, temperature, atmosphere and loading system for material characteristics.
Powder Metallurgy
Iron-based alloys, tool steels, cemented carbides and powder products.
Advanced Ceramics
Alumina, zirconia, silicon nitride and silicon carbide ceramics.
New Energy Materials
Lithium positive and negative electrodes, solid electrolytes and energy storage materials.
Magnetic Materials
Permanent magnetic, soft magnetic, ferrite and magnetic device materials.
Research Institutions
New material verification, sintering system research and sample preparation.
Need Help Matching a Sintering Furnace to Your Process?
Provide materials, maximum temperature, target atmosphere, sample size and single batch loading, the technical team will develop a selection plan for you.
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Powder Raw Materials
Compression Forming
High Temperature Sintering
Dense Artifact
