Hardening Furnace Introduction

The tempering furnace is one of the key equipment used in metal heat treatment processes to improve the properties of the material after quenching. Tempering is generally carried out immediately after quenching.

Quenched metal, while significantly increased in hardness and strength, becomes more brittle and has high internal residual stresses, leading to deformation and cracking.

The tempering process involves heating the metal after quenching to a specific temperature and then cooling it slowly to reduce internal stresses, enhance toughness, and stabilize the material's dimensions.

Purpose of tempering furnace

Widely applied in various industries such as mechanical manufacturing, automotive, aerospace, shipbuilding, and light industry.

Used for heat treatment of metal parts such as high-speed steel, alloy steel, bearing steel, die steel, and aluminum alloy castings, pistons, aluminum plates, etc.

The process can be carried out in air, protective atmosphere, or a vacuum. Custom-designed multi-purpose tempering furnaces are also available for annealing and aging, etc.

Characteristics of the tempering furnace

(For example, a trolley-type tempering furnace)

Robust and durable furnace structure

The outer steel structure is made by tightly welding steel plates and sections, with a durable furnace body structure and reinforced by combined channels.

The equipment is easy to install and operate; no need for foundation excavation; simply place it on the ground and secure with bolts for use.

Expertly designed heating elements

The heating element is a specially designed high-temperature alloy resistance strip, reasonably arranged on all five sides of the furnace for uniform temperature distribution.

Excellent antioxidant properties, high-temperature resistance, and high load capacity. No cracking at ultra-high temperatures, maintenance-free year-round.

Excellent thermal insulation properties

The furnace chamber is constructed with high-purity ceramic fiber high-pressure modules, featuring non-deforming multiple anchoring, ensuring excellent thermal insulation performance in the lining manufacturing process.

Energy-saving and emission-reducing technology, all-fiber structure, fast heating-up inside the furnace. Low thermal conductivity, low heat capacity, and excellent anti-corrosion properties.

Stable furnace door, good sealing properties

The gantry structure is sturdy and durable, with stable up and down movement of the furnace door. The track is self-weighted and tightly sealed, offering strong sealing performance.

Equipped with an electric lifting double guide rail automatic sealed furnace door, full fiber insulation structure with sealing rings without damaging the masonry.

Long-life High-Pressure Sealed Fan

The dedicated high-pressure fan boasts strong stability and pressure resistance, ensuring the equipment maintains optimal operating conditions in various environments.

Stable and reliable coaxial fan blades with low maintenance and failure rates, offering long-lasting continuous operation, ensuring the quality of the entire tempering process.

Complement with high-temperature uniformity internal recirculating air duct

Full stainless steel multi-channel hot air internal circulation duct, with air guide plate, matched with high-pressure fan, to achieve stable and high-speed reciprocating circulation of hot air inside the furnace.

When applied in aerospace precision heat treatment and other uses, combined with a microcomputer high-precision temperature control system, the uniformity of the furnace temperature achieves ±3-5°C.

Vacuum tempering with high-temperature-resistant stainless steel vacuum pots

Import high-temperature-resistant stainless steel vacuum vessel, X-ray inspected, no leakage.

Can rapidly evacuate to reach the specified vacuum state, maintaining the heat treatment process for an extended period.

Customized material boxes, enhance production efficiency

Design and manufacture various workpiece boxes, featuring quick and easy loading and unloading.

All kinds of work tools including material boxes, fixtures, and trays are available.

Supplementary high-temperature collision-proof and anti-fall granule-free furnace bottom plate, remains shape after long-term use.

Customizable in various tempering furnace types, effectively meeting customer requirements.

Trolley-type tempering furnace, widely applicable and easy to operate.

Bainite furnace, compact footprint with excellent design.

Vacuum tempering furnace, designed for oxidation-free vacuum heat treatment.

Precision temperature control automation

Hankou Furnace Company's independently developed touch screen graphical interface temperature control system, high-quality power adjustment module, and precise process curve control.

Automated process control ensures the ideal hardening and tempering process curve is executed with high precision in practical applications, with a temperature control accuracy of ±1°C.