China Vacuum Annealing Furnace for Metals/Silicon Steel - Reliable Suppliers & Factory Solutions

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Our Vacuum Annealing Furnace is designed specifically for the heat treatment of metals such as silicon steel and stainless steel, as well as amorphous alloys and magnetic materials, all under a controlled vacuum atmosphere. This innovative furnace effectively prevents oxidation and contamination from impurities during the annealing process, ensuring exceptional material purity.

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Operating within a temperature range of RT-1200℃, with a control accuracy of ±5℃, our furnace allows for precise tuning of processes aimed at relieving internal stress, enhancing material toughness, and optimizing magnetic properties—crucial for silicon steel cores. Manufactured by leading China suppliers, our factory employs intelligent control systems that support batch processing and significantly reduce cycle times, all while adhering to industrial standards in the electrical, automotive, and machinery sectors.

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Product Description

Product Specification

Furnace typeHorizontal signal room
Effective size (Inner liner A)1000x1100x2200mm (W)x(H)x(L)
Effective size (Inner liner B)1200x1200x2600mm (W)x(H)x(L) — Note: Rated capacity 10,000KG, 180KW power.
Max loading capacity5000 kg
Maximum furnace temperature950℃ (Typical operation: 800℃–900℃)
Limit vacuity100 Pa
Pressure rising rate< 50 Pa/h
Air exhausting time30 min (To 400 MPa vacuum)
Heating power120 kW (3 × 40 kW)
Temperature uniformity≤ ±2℃ (Insulation stage)
Surface temperatureRoom temperature + 35℃
Temperature Points3
Control methodAutomatic by program
Cooling water capacity10–12 T/h

Key Advantages

🛡️ 1. Oxidation Prevention

Operates in a high-vacuum atmosphere, isolating materials like silicon steel from air. This eliminates oxidation and decarburization, ensuring superior surface quality.

🎯 2. Precise Control

Accurate temperature tuning (RT–1200℃) with ±5℃ precision. Relieves internal stress and optimizes magnetic properties for maximum energy efficiency.

⚙️ 3. Industry Adaptability

Suitable for stainless steel, amorphous alloys, and magnetic materials across electrical, automotive, and aerospace sectors.

4. Efficient & Safe

Automated cycles shorten annealing time by 20%. Includes overheating protection and vacuum leakage alarms for stable long-term operation.

Product Display

Industrial Applications

1. Silicon Steel Processing

Essential for annealing grain-oriented (GO) and non-oriented (NGO) silicon steel cores for transformers. Enhances magnetic permeability and reduces core loss.

🚗2. Automotive & Machinery

Performs stress relief for high-strength metal parts like transmission gears, preventing deformation and improving fatigue resistance during heavy-duty use.

🔬3. Special Alloys & Aerospace

Ideal for amorphous alloy cores and titanium alloys. The vacuum environment maintains the unique atomic structure and ensures surface purity for high-tech applications.

Frequently Asked Questions

Q1What is the maximum loading capacity and temperature?
The furnace supports a maximum loading capacity of 5,000 kg and can reach 950℃. For silicon steel applications, 800℃–900℃ is the standard operating range.
Q2How long does the vacuum evacuation process take?
The furnace achieves a limit vacuity of 100 Pa. The air exhausting time to reach 400 MPa vacuum is approximately 30 minutes.
Q3What materials can be processed in this furnace?
It is suitable for GO/NGO silicon steel, amorphous alloys, stainless steel, carbon steel, and titanium alloys.
Q4What is the temperature uniformity of the system?
It features a temperature uniformity of ≤ ±2℃ during the insulation stage, controlled automatically by a multi-point program.
Q5Are there safety mechanisms for long-term operation?
Yes, the system is equipped with overheating protection, vacuum leakage alarms, and pressure relief devices to ensure safety and stability.
Q6Is there a version for higher volume production?
Yes, a larger model with 10,000kg capacity and 180kW power is available with an inner liner size of 1200x1200x2600mm.

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