Metal Mold Preheating and Heating Tunnel Furnace

The metal mold preheating and heating tunnel furnace is an automated heating equipment specially designed for continuous preheating, baking, and heat treatment of industrial molds, precision casting parts, and metal products.By combining a continuous conveying system with a high-efficiency hot air circulation system, the equipment enables molds to reach the uniform temperature required by the process before entering the production line. It effectively prevents thermal stress cracks caused by sudden cooling and heating, significantly extends mold service life, and improves product molding quality.

Product Applications

Mold Preheating:

Used for rapid and uniform heating of molds before production in industries such as die casting, injection molding, and forging.

Coating Curing:

Used for high-temperature drying and curing of sprayed coatings and Teflon coatings on metal molds and workpieces.

Stress Relief:

Used for stress-relief annealing heat treatment after metal machining or welding processes.

Alloy Baking:

Used for shell baking in precision casting processes and moisture removal drying of metal products.

Product Parameters

Product Features

High Efficiency and Energy Saving:

The equipment adopts a powerful dual-direction hot air circulation design, providing high thermal efficiency and excellent temperature balance throughout the furnace.

Precision Temperature Control:

Multi-section independent temperature control technology allows different heating rates to be set according to the mold process temperature curve.

High Load-Bearing Capacity:

The conveying structure is reinforced specifically for heavy metal molds, ensuring stable operation without vibration.

Intelligent Safety Protection:

Equipped with over-temperature alarms, transmission overload protection, exhaust interlock control, and audible and visual alarm systems.

FAQ

Q1: What is the maximum load capacity of the tunnel furnace?

A1: The load capacity is fully customized according to the customer's mold specifications. Mesh belt conveyors typically support 50–200 kilograms per square meter, while heavy-duty chain conveyors or roller conveyors can achieve single-point loads of several tons.

Q2: How long does it usually take to heat the molds to the specified temperature?

A2: This depends on the mold material, size, and initial temperature. Due to its high-efficiency hot air circulation system, the equipment provides a heating speed more than 30% faster than conventional box furnaces.

Q3: How does the equipment ensure that the surface temperature and core temperature of large molds are consistent?

A3: The equipment uses a scientific air duct design to achieve multi-angle high-speed hot air convection. The constant temperature section of the tunnel furnace can also be extended to ensure complete and uniform heating throughout the mold.

Q4: Can the equipment be connected to our factory MES automation system?

A4: Yes. The control system reserves communication interfaces such as RS485 and Ethernet, and supports standard communication protocols such as Modbus, making remote data acquisition and integration with the central control system convenient.

Q5: Which is more economical, gas heating or electric heating?

A5: Electric heating provides more precise temperature control and has lower requirements for factory conditions. Gas heating generally offers 30%–50% lower energy costs than electric heating during long-term, high-power continuous operation.