Best Vacuum Annealing Furnace for Metals & Silicon Steel - Leading China Suppliers & Factory Solution Manufacturers, Factories

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Introducing our Vacuum Annealing Furnace, a cutting-edge solution designed specifically for the heat treatment of metals, including silicon steel and stainless steel, as well as amorphous alloys and magnetic materials. Manufactured in China, our furnace operates under a vacuum atmosphere to effectively prevent oxidation and contamination, ensuring the highest material purity throughout the annealing process.

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With a remarkable temperature range of RT-1200℃ and a control accuracy of ±5℃, this furnace allows for precise tuning of processes to alleviate internal stress, enhance toughness, and optimize magnetic properties, which are crucial for silicon steel cores. As a trusted supplier from a leading factory, we guarantee intelligent control features that support batch processing, reduce cycle times, and adhere to industrial standards across the electrical, automotive, and machinery sectors.

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Product Description

Product Specification

Furnace typeHorizontal signal room
Effective size of inner liner1000x1100x2200mm (W)x(H)x(L)
Effective size of inner liner (High Capacity)1200x1200x2600mm (W)x(H)x(L) — Note: Rated furnace capacity 10000KG, Power 180KW, vacuum unit: 2X+70 pumps + 150 Roots pumps.
Max loading capacity5000 kg
Maximum furnace temperature950°C (900°C / 800°C–850°C is enough for your material)
Limit vacuity100 Pa
Pressure rising rate≤ 50 Pa/h
Air exhausting time30 min (Vacuum 400 Mpa)
Heating power120 kW (3×40 kW)
Temperature uniformity≤ ±2°C (Insulation)
Temperature of furnace surfaceRoom temperature + 35°C
Temperature Points3
Temperature control methodAutomatic by program
Operation modeManual (Furnace door)
Cooling water capacity10~12 T (Tons per hour)

Key Advantages

1. Oxidation & Contamination Prevention

Operates in a high-vacuum atmosphere, completely isolating materials from air during annealing. This eliminates oxidation, decarburization, and impurity adsorption, ensuring original purity.

2. Precise Temperature Control

Offers a wide temperature range (RT–1200°C) with ±5°C control accuracy. It enables precise tuning of processes to relieve internal stress and optimize magnetic properties.

3. Strong Material Adaptability

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

4. Efficient & Safe Operation

Integrates intelligent control systems for automated ramping and monitoring. Equipped with overheating protection and vacuum leakage alarms.

Product Display

Industry Applications

1

Silicon Steel & Magnetic Material Processing

Essential for annealing grain-oriented (GO) and non-oriented (NGO) silicon steel cores. Under vacuum, it eliminates oxidation and reduces internal stress, directly enhancing magnetic permeability and lowering core loss for transformers and motors.

2

Metal Component Manufacturing

For high-strength metal parts in automotive and machinery sectors. Performs vacuum annealing to relieve internal stress caused by forging or machining, preventing deformation and improving material toughness.

3

Amorphous Alloy & Special Material Treatment

Processes amorphous alloy cores and rare metal materials like titanium alloys. The vacuum environment avoids oxidation of fragile alloys, maintaining their atomic structure and stabilizing magnetic properties.

Frequently Asked Questions

Q: What is the maximum loading capacity?
The standard model supports up to 5,000 kg. An upgraded version with an inner liner of 1200×1200×2600mm supports up to 10,000 kg.
Q: What materials can be processed?
It is suitable for silicon steel, amorphous alloys, stainless steel, carbon steel, titanium alloys, and other rare metals.
Q: What is the temperature control accuracy?
The furnace features a temperature uniformity of ≤ ±2°C with fully automated programmable controllers.
Q: How long does it take to reach vacuum level?
It takes approximately 30 minutes to reach a vacuum level of 400 MPa, with a limit vacuity of 100 Pa.
Q: What safety features are included?
It includes overheating protection, vacuum leakage alarms, and pressure relief devices, complying with industrial safety standards.
Q: How does vacuum annealing help silicon steel?
It eliminates oxidation and surface contamination while optimizing grain orientation, which enhances magnetic permeability and reduces core loss.

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