China Vacuum Annealing Furnace for Metals/Silicon Steel Factories, Product

Our Vacuum Annealing Furnace is tailored for heat treatment of metals (silicon steel, stainless steel), amorphous alloys, and magnetic materials under a vacuum atmosphere. It prevents oxidation and impurity contamination during annealing, ensuring material purity.

With a temperature range of RT-1200℃ and ±5℃ control accuracy, it enables precise process tuning to relieve internal stress, enhance material toughness, and optimize magnetic properties (critical for silicon steel cores). Equipped with intelligent control, it supports batch processing, shortens cycles, and meets industrial standards for electrical, automotive, and machinery sectors.

Product Description

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 5000kg
Maximum furnace temperature 950℃ (900℃ (800℃-850℃ is enough for your material))
Limit vacuity 100Pa
Pressure rising rate <50Pa/h
Air exhausting time 30min (Vacuum 400Mpa)
Heating power 120kW (3×40kW)
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 (Tons per hour) 10~12(T)

Advantages

01

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.

02

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).

03

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.

04

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

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.

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.

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).

Frequently Asked Questions

What materials are suitable for this vacuum annealing furnace?
This furnace is highly adaptable for the heat treatment of various materials, including silicon steel cores (GO and NGO), amorphous alloys, magnetic materials, stainless steel, carbon steel, and titanium alloys.
How does the high-vacuum design protect the components during heating?
By operating under a vacuum level of 100Pa, the furnace completely isolates materials from oxygen and contaminants. This prevents oxidation, decarburization, and surface discoloration, ensuring high-quality surface finishes and material purity.
What is the maximum operating temperature and temperature uniformity?
The furnace supports a maximum temperature of 950℃ (optimized for typical material demands around 800℃-850℃) and delivers an outstanding temperature uniformity of ≤±2℃ during insulation for uniform heat treatment.
What are the power and loading capacity specifications for standard models?
The standard horizontal single-room furnace features a heating power of 120kW to 180kW, and is engineered to handle maximum loading capacities of 5000kg up to 10000kg depending on configurations.
How automated is the temperature and vacuum operation?
The equipment utilizes an intelligent program-controlled system that automates temperature profiling and vacuum level monitoring, reducing manual intervention and increasing safety.

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