Gas Quenching Furnace

Features
Max Operating Temperature:	1320 ℃
Furnace Temperature Uniformity:	≤±5℃
Ultimate Vacuum Level:	10⁻⁴ Pa
Leak-up Rate:	≤0.5 Pa/h
Max Gas Quench Pressure:	6/10/15/20 bar
High-vacuum design for clean heat treatment
Non-oxidation & non-decarburization for parts
Horizontal/Vertical structure customizable
Available for multiple charging loads

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Product Overview

This series of vacuum high-pressure gas quenching furnishes are manufactured in horizontal and vertical configurations, specially engineered for high-speed steel, tool & die steel, stainless steel, titanium alloy, magnetic materials and other materials. They are capable of core vacuum heat treatment processes including vacuum quenching and solution treatment, suitable for full-scenario applications ranging from scientific research to mass production.

The horizontal type (HZQ Series) is equipped with hinged / motor-driven furnace doors, graphite or high-temperature molybdenum alloy heating elements and carbon felt heat shields, ideal for batch quenching of small & medium-sized parts.

The vertical type (HZQL Series) adopts top-charging / bottom-charging furnace doors, paired with workpiece vertical conveying & rotating mechanisms and high-pressure forced convection cooling. Featuring uniform heating and minimal part deformation, it fits the production of large & medium precision components.

The full series is standard-fitted with an intelligent fully automatic control system consisting of PLC + touch screen, supporting editing, storage and recall of process programs, as well as real-time monitoring of equipment operating status. It realizes display, query and printing of process reports, real-time curves, historical curves and fault alarm reports.

Built with multiple safety interlocks, fault diagnosis and abnormality alarm functions, the system can be optionally equipped with a remote diagnosis system to enable rapid after-sales response, reduce manual labor intensity and elevate the standardization level of production.

Technical Advantages

1. Vacuum Clean Environment, No Oxidation & Decarburization

Equipped with high-vacuum pumping units and reliable sealing structure to strictly control oxygen content inside the furnace. Workpieces retain bright metallic luster after heat treatment without post-grinding treatment, raising product yield rate and cutting processing costs.
2. Uniform Temperature Field & Precise Temperature Control

For low-temperature stages, forced convection heating is adopted to achieve rapid & uniform temperature rise and avoid local temperature difference.

The innovative heating chamber structure is matched with graphite or high-temperature molybdenum alloy heating elements and high-performance heat shields, delivering furnace temperature uniformity ≤ ±5 ℃. It guarantees homogeneous heating, stable hardness and excellent consistency among batches of workpieces.
3. High-Pressure Gas Quenching with Controllable Deformation

Fitted with high-efficiency heat exchangers, optimized air duct systems and dedicated cooling fans to realize rapid & uniform high-pressure convection cooling.

Cooling pressure and fan rotating speed are adjustable to perform graded quenching, which minimizes workpiece deformation and cracking risk, making the furnace suitable for mass production of precision parts.
4. Stable Performance & Easy Maintenance

Rational layout of core components; the novel carbon-felt composite heat shield resists erosion from high-temperature & high-pressure airflow, featuring long service life and easy maintenance.

Multiple safety interlock protection and fault alarm functions ensure stable operation for continuous production, along with simplified maintenance procedures and low maintenance costs.
5. Eco-Friendly & Standard-Compliant

Zero discharge of three wastes during operation and low noise level, complying with environmental safety standards and production specifications for high-end workshops to support green manufacturing.
6. Intelligent & User-Friendly Operation

Fully automatic PLC + touchscreen control system with friendly interface, supporting recipe editing, automatic operation, data traceability and remote diagnosis. It reduces labor intensity and improves the standardization of production.

Application Scope

1. Mold Manufacturing Industry

Applied to vacuum quenching of high-speed steel, tool & die steel and stainless steel. Compatible with injection molds, die-casting molds, stamping molds, precision cavity molds, etc., to improve mold hardness, wear resistance and service life.

2. Cutting Tools & Precision Tool Industry

For high-speed steel cutters, alloy cutting tools, drills, milling cutters, taps, gear cutters, precision measuring tools and wear-resistant components. It guarantees cutting edge quality, dimensional accuracy and surface finish.

3. Aerospace & High-End Equipment

Used for vacuum quenching and solution treatment of precision parts, fasteners and structural components made of stainless steel, titanium alloy, superalloy and high-strength structural steel, meeting requirements of high cleanliness, high reliability and uniform material performance.

4. Magnetic Material Industry

Serves vacuum heat treatment of various ferrites, rare-earth permanent magnets and soft magnetic alloys. It effectively relieves internal stress and stabilizes microstructure, ensuring uniform & stable magnetic properties and excellent batch consistency of materials, to satisfy high-reliability requirements of electronics, communication, new energy and precision electromagnetic devices.

5. Precision Machinery & Basic Components

Applicable to precision gears, bearings, shafts, elastic elements, hydraulic parts, fasteners and other precision mechanical products that demand strict control of deformation, dimensional accuracy and surface quality.

Product Specifications

Horizontal Vacuum High-Pressure Gas Quenching Furnace (HZQ Series)

Model	Effective Heating Zone (L × W × H, mm)	Charging Capacity (kg)	Max Temperature (°C)	Temperature Uniformity (°C)	Ultimate Vacuum (Pa)	Pressure Rise Rate (Pa/h)	Heating Power (kW)
HZQ-50	450×300×300	100	1320	≤±5	10⁻⁴	≤0.5	50
HZQ-80	600×400×400	200	1320	≤±5	10⁻⁴	≤0.5	80
HZQ-120	750×500×500	300	1320	≤±5	10⁻⁴	≤0.5	120
HZQ-150	900×600×600	500	1320	≤±5	10⁻⁴	≤0.5	150
HZQ-240	1200×800×800	1000	1320	≤±5	10⁻⁴	≤0.5	240
HZQ-300	1300×900×900	1200	1320	≤±5	10⁻⁴	≤0.5	300

Vertical Vacuum High-Pressure Gas Quenching Furnace (HZQL Series)

Model	Effective Heating Zone (Dia. × H, mm)	Charging Capacity (kg)	Max Temperature (°C)	Temperature Uniformity (°C)	Ultimate Vacuum (Pa)	Pressure Rise Rate (Pa/h)	Heating Power (kW)
HZQL-50	Φ400×300	100	1320	≤±5	10⁻⁴	≤0.5	50
HZQL-80	Φ500×600	200	1320	≤±5	10⁻⁴	≤0.5	80
HZQL-150	Φ800×900	300	1320	≤±5	10⁻⁴	≤0.5	150
HZQL-180	Φ1000×1100	500	1320	≤±5	10⁻⁴	≤0.5	180
HZQL-200	Φ1000×1200	1000	1320	≤±5	10⁻⁴	≤0.5	200
HZQL-300	Φ1000×2000	1500	1320	≤±5	10⁻⁴	≤0.5	300
HZQL-450	Φ1500×1500	2500	1320	≤±5	10⁻⁴	≤0.5	450
HZQL-500	Φ1600×2000	3000	1320	≤±5	10⁻⁴	≤0.5	500

Custom Non-Standard Solutions

Structural Customization

Personalized design for horizontal / vertical furnace bodies, door types (hinged type, motor-driven type, top-charging, bottom-charging), and workpiece transmission mechanisms.
Parameter Customization

Core parameters including heating zone dimension, charging capacity, heating power, ultimate vacuum and gas quenching pressure can be adjusted on demand.
Process Customization

For special materials such as high-speed steel, tool & die steel, stainless steel, titanium alloy and magnetic materials, we optimize the heating, cooling and vacuum systems to customize exclusive heat treatment processes.
Auxiliary Customization

Customized workshop-adapted configurations including control system expansion, tooling fixtures, protective gas supply packages, remote monitoring systems, etc.

Our Services

Standardized response mechanism

• 4-hour rapid response to demands.

• Engineers will arrive within 24 hours within a 400km radius.

• Free troubleshooting/repair/replace parts within 48 hours.

• No cost: All expenses covered for non-human faults during the warranty period.
Full-Cycle Intelligent Maintenance

• 7×24-hour remote monitoring within the warranty/membership period

• Regular on-site inspection, maintenance and upkeep by professional engineers

• Core objective: Extend the service life of equipment
Customized Preventive Maintenance

• Adjusted according to usage intensity, operating frequency, local temperature and humidity, etc.

• Custom exclusive plans for advance risk troubleshooting

• Reduce unplanned downtime
Lifetime Membership Service

• Complete membership benefits available after the expiration of the warranty period

• Lifetime 4S-style equipment maintenance, servicing and technical upgrades

• Continuous optimization of equipment performance and value
Systematic Hands-on Training

• One-on-one on-site tutoring by senior engineers after equipment commissioning

• Instruction on operation, maintenance and basic troubleshooting

• Practical assessment until proficient mastery is achieved