Sealed Quench Furnace

About Sealed Quench Furnace

Sealed Quench Furnace manufactured by United Enterprises is an integrated heat treatment furnace combining a heating chamber and a sealed quench tank ideal for hardening, carburizing, carbonitriding and similar atmosphere-controlled processes.

Brief Description:

Sealed Quench Furnaces (also abbreviated as SQF or IQF) are the workhorse of modern heat treatment shops. The sealed chamber maintains a tight atmosphere typically endothermic gas or cracked ammonia while the integrated quench tank below the heating chamber ensures rapid, controlled quench without exposure to ambient air.

Our SQF designs are supplied with our in-house Ammonia Crackers, Endo Gas Generators, Nitrogen Generators or Hydrogen Generators, all built under one roof. Both electric and recuperative gas-fired heating versions are available.

Each unit is engineered for the customers parts, atmosphere, target hardness and throughput.

Characteristics:

• Maximum temperature up to 1200C
• Sealed atmosphere with integrated quench tank
• Available in electric and recuperative gas-fired versions
• Endo gas / cracked ammonia / nitrogen atmosphere
• Low-density high-quality insulation
• In-house gas generators for controlled atmosphere
• Multi-zone PLC and SCADA temperature control
• Maximum operational efficiency

About United Enterprises:

United Enterprises is over 25+ years experienced Sealed Quench Furnace manufacturer in India. We design, manufacture, supply, export and commission tailor-made SQFs across Asia and Europe. Established in 1998, we are an established manufacturer and exporter in India, supplying automotive, gear, bearing and engineering industries all under CE and ISO standards.

FAQs:

Q: Sealed quench or open quench?

A: Sealed quench is preferred where atmosphere control is critical carburizing, carbonitriding, and bright hardening. Open quench is simpler and used for plain hardening.

Q: Do you supply with gas generators?

A: Yes. Endo Gas Generator, Ammonia Cracker and Nitrogen Generator are built in-house and supplied with the SQF.

Q: Can it be integrated with washing and tempering?

A: Yes. Complete sealed quench lines with pre-wash, post-wash and tempering furnace are routinely supplied.

Advanced Control and Uniform Heating

The PLC-based control panel with digital display allows for precise programming and monitoring of all furnace parameters. With advanced temperature regulation and atmosphere control, each batch achieves consistent, uniform heat treatment. Heating is provided by high-quality Nickel-Chrome or Silicon Carbide elements, ensuring energy efficiency and extended component life.


Outstanding Safety and Efficiency

Safety is integral with features like overtemperature protection, secure door lock mechanisms, and automatic power cutoff. The sealed quench chamber and hydraulically operated, air-tight door minimize heat loss and emission, promoting safety and energy savings. The furnace meets ISO 9001:2015 certification for quality assurance in demanding industrial environments.


Reliable Atmosphere and Quenching Control

Our sealed chamber supports controlled endothermic or exothermic atmospheres, essential for precise carburizing and hardening. The integrated oil or polymer quench tank, with efficient agitation, delivers rapid, uniform cooling-critical for metallurgical consistency. Available in custom sizes, the unit adapts to diverse production requirements.