Vacuum Heat
Treatment Furnace
Built for Precision

Gas quenching uses high-pressure inert gas (nitrogen or argon) to cool the workpiece inside the same chamber, offering cleaner operation and lower distortion — ideal for high-speed steels and tool steels. Oil quenching uses a separate oil bath chamber and delivers faster cooling rates, making it better suited for alloy steels, bearing steels, and materials that require a more rapid quench to achieve full hardness.

The required vacuum level depends on your material and process temperature. As a general guide: low alloy and high chromium steels typically require 1.33–12.3 Pa; high carbon and high alloy steels need ≤1.33×10⁻² Pa; carbon steels should not exceed 1.33×10⁻² Pa. At higher temperatures, a lower vacuum (higher pressure) with partial nitrogen backfill is recommended to prevent alloy element volatilization. Our engineers can advise the optimal vacuum level for your specific application.

Yes. Titanium, tungsten, and other reactive alloys are among the primary beneficiaries of vacuum heat treatment. These materials oxidize rapidly in air but remain chemically stable under high vacuum. For titanium processed at temperatures approaching 1250°C, we recommend a vacuum level of approximately 1.33×10⁻² Pa. Our furnaces can be configured with metallic hot zones to avoid carbon contamination from graphite components when processing reactive alloys.

Cycle time depends on the material, workpiece mass, target temperature, and required soak time. A typical tool steel quenching cycle runs 4–8 hours including pump-down, heating ramps, soaking, and cooling. Annealing cycles for stress relief may be shorter (2–4 hours), while full annealing of large loads can take 8–12 hours. Our PLC systems allow you to program and optimize cycle times for your specific process.

Absolutely. Custom chamber dimensions, loading capacities, temperature ranges, vacuum system configurations, and heating element materials are all available. Whether you need a compact laboratory furnace or a large-scale industrial system, our engineering team will design a solution matched to your exact process requirements and facility constraints. Please share your specifications via the inquiry form below.

We provide comprehensive support including installation guidance documentation, video commissioning assistance, operator training materials, remote troubleshooting via video call, and a full spare parts supply service. Our technical team is reachable by email and phone during business hours, and critical spare parts such as heating elements, thermocouples, and seals are held in stock for rapid dispatch to minimize your downtime.

Standard model furnaces typically have a production lead time of 30–45 working days after order confirmation and deposit receipt. Custom or large-scale systems may require 60–90 working days depending on complexity. We work with reputable international freight forwarders to arrange sea, air, or express shipping to your destination, and we handle all export documentation including packing lists, commercial invoices, and certificates of origin.

Vacuum heat treatment offers several clear advantages over atmosphere furnaces: complete elimination of oxidation and decarburization (no protective gas consumption), significantly brighter surface finish requiring no post-cleaning, lower distortion due to more uniform heating, elimination of hydrogen embrittlement risk, and a cleaner, safer operating environment with no flammable or toxic gases. While the initial equipment investment is higher, the savings in post-processing, rework, and scrap rates typically deliver a strong return on investment.