China Vacuum Annealing Furnace for Metals/Silicon Steel - Reliable Suppliers & Factory Solutions
Product Specification
| Furnace type | Horizontal signal room |
| Effective size of inner liner | 1000x1100x2200mm (W)x(H)x(L) |
| Effective size of inner liner | 1200x1200x2600mm (W)x(H)x(L) — Note: Rated furnace capacity 10000KG, Power 180KW, vacuum unit: 2X+70 pumps + 150 Roots pumps, other technical requirements are the same. |
| Max loading capacity | 5000 kg |
| Maximum furnace temperature | 950℃ （900℃ / 800℃–850℃ is enough for your material） |
| Limit vacuity | 100 Pa |
| Pressure rising rate | < 50 Pa/h |
| Air exhausting time | 30 min (Vacuum 400 MPa) |
| Heating power | 120 kW（3×40 kW） |
| Temperature uniformity | ≤ ±2℃ (Insulation) |
| Temperature of furnace surface | Room temperature + 35℃ |
| Temperature Points | 3 |
| Temperature control method | Automatic by program |
| Operation mode | Manual (Furnace door) |
| Cooling water capacity | 10～12 T/h (Tons per hour) |
Advantages
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🛡️1. Oxidation & Contamination Prevention
Operates in a high-vacuum atmosphere, completely isolating materials (e.g., silicon steel, amorphous alloys) from air during annealing. This eliminates oxidation, decarburization, and impurity adsorption, ensuring the original purity and surface quality of materials—critical for high-performance components like silicon steel cores.
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🎯2. Precise Temperature Control
Offers a wide temperature range (RT–1200℃) with ±5℃ control accuracy. It enables precise tuning of annealing processes to target specific material improvements: relieving internal stress (reducing deformation in subsequent processing), enhancing toughness (extending component service life), and optimizing magnetic properties (boosting energy efficiency of magnetic materials).
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⚙️3. Strong Material & Industry Adaptability
Suitable for heat treatment of diverse materials—metals (stainless steel, carbon steel), amorphous alloys, and magnetic materials. It meets annealing demands across sectors: electrical (silicon steel core processing), automotive (high-strength metal parts), and machinery (precision component stress relief), with flexible process parameter adjustment for different specs.
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✅4. Efficient & Safe Operation
Integrates intelligent control systems for automated temperature ramping, vacuum monitoring, and batch processing—shortening annealing cycles by 20%+ vs. traditional furnaces. Equipped with overheating protection, vacuum leakage alarms, and pressure relief devices, it complies with industrial safety standards, ensuring stable, low-risk long-term operation.
Product Display
Application
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1. Silicon Steel & Magnetic Material Processing
It is essential for annealing grain-oriented (GO) and non-oriented (NGO) silicon steel cores (used in transformers and motors). Under vacuum, it eliminates oxidation, optimizes silicon steel's grain orientation, and reduces internal stress—directly enhancing magnetic permeability and lowering core loss. This ensures the energy efficiency of final electrical products (e.g., low-loss transformers, high-performance motors) meets industrial standards.
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2. Metal Component Manufacturing (Automotive & Machinery)
For high-strength metal parts (e.g., automotive transmission components, precision mechanical gears) and stainless steel products, the furnace performs vacuum annealing to relieve internal stress caused by forging, casting, or machining. This prevents deformation/cracking during subsequent processing or use, improves material toughness and fatigue resistance, and extends the service life of components—critical for automotive and heavy machinery reliability.
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3. Amorphous Alloy & Special Material Treatment
It processes amorphous alloy cores (for amorphous transformers/inductors) and rare metal materials (e.g., titanium alloys). The vacuum environment avoids oxidation of fragile amorphous alloys during annealing, maintains their unique atomic structure, and stabilizes magnetic properties. For rare metals, it ensures surface purity, laying the foundation for their application in high-tech fields (e.g., aerospace precision parts).
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Frequently Asked Questions
Q1
What is the maximum loading capacity and temperature of this vacuum annealing furnace?
The furnace supports a maximum loading capacity of 5,000 kg and can reach a maximum furnace temperature of 950℃. For most silicon steel and amorphous alloy applications, an operating range of 800℃–900℃ is sufficient, providing both flexibility and energy efficiency.
Q2
What vacuum level can the furnace achieve, and how long does it take to evacuate?
The furnace achieves a limit vacuity of 100 Pa with a pressure rising rate of less than 50 Pa/h. The air exhausting time to reach 400 MPa vacuum is approximately 30 minutes, ensuring a clean, oxygen-free environment for annealing sensitive materials.
Q3
What types of materials can be processed in this vacuum annealing furnace?
The furnace is suitable for a wide range of materials including grain-oriented and non-oriented silicon steel, amorphous alloys, stainless steel, carbon steel, titanium alloys, and other rare metals. It serves industries such as electrical engineering, automotive manufacturing, aerospace, and precision machinery.
Q4
How accurate is the temperature control, and how uniform is the temperature inside the furnace?
The furnace features automatic program-based temperature control with a temperature uniformity of ≤ ±2℃ during insulation. With 3 temperature monitoring points and a wide operating range (RT–1200℃), it ensures consistent and repeatable annealing results across the entire load.
Q5
What safety features are included in this vacuum annealing furnace?
The furnace is equipped with multiple safety mechanisms including overheating protection, vacuum leakage alarms, and pressure relief devices. The intelligent control system continuously monitors vacuum levels and temperature, ensuring stable and safe long-term operation in compliance with industrial safety standards.
Q6
Is a larger capacity version available, and what are its specifications?
Yes. A larger model is available with an inner liner size of 1200×1200×2600mm (W×H×L), a rated furnace capacity of 10,000 kg, and a power of 180 kW. It uses a vacuum unit consisting of 2X+70 pumps and 150 Roots pumps. All other technical requirements remain the same as the standard model.