High Temperature Ovens for Demanding Heat Treatment up to 650°C

ZonHoo high temperature ovens are built for parts that live in the red zone – tool steels, castings, ceramics, and advanced materials that need stable performance above 400°C. From vacuum chambers to truck-in and cart-loaded designs, we help you lock in repeatable cycles, improve part-to-part uniformity, and protect your operators from extreme heat.

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What Is a ZonHoo High Temperature Oven?

A ZonHoo high temperature oven is a purpose-built thermal processing system designed to run safely and efficiently at elevated temperatures, typically between 300 and 650°C. Compared with standard industrial ovens, our high temperature line uses reinforced insulation, heavy-duty construction, and carefully selected materials to withstand thermal shock, intense radiant heat, and long Soak times without compromising uniformity or safety:

Wide temperature range – typically 300–650°C depending on model and design.
Stable uniformity – engineered airflow and thermal design to keep parts within your specified window.
Durable insulation – high-density fiber and refractory materials to reduce heat loss and skin temperature.
Safer operation – door interlocks, gas management, and safeguards designed around your process risks.
Process-ready controls – recipe management, ramp/soak profiles, alarms, and data logging for traceability.
Configurable layout – vacuum, truck-in, cart, and box designs to match your floor space and workflow.

Whether you need hardening, tempering, sintering, or high-temperature curing, ZonHoo high temperature ovens are sized and tuned to your exact parts and process.

Available High Temperature Oven Models

High Temp Cart Oven

High temp cart ovens are compact, cart-loaded designs for plants that need high temperatures in a smaller footprint. Operators load parts on shelves or fixtures and move the whole cart in one motion.

Compact, space-saving footprint
Flexible shelves and fixtures
Strong airflow for stacked loads
Ideal for tool shops & R&D

High Temp Truck-In Oven

Truck-in high temperature ovens handle heavy loads on one or two wheeled carts. Your team can stage full racks outside the chamber and roll them in as a unit, which keeps changeovers fast and layouts consistent.

Heavy-duty floor and door
Airflow tuned to truck layout
Fast recovery after door openings
For castings, tools, weldments

High Temp Vacuum Oven

For processes that combine high temperature with low pressure or controlled atmosphere, our high temp vacuum ovens provide clean, repeatable results for high-value parts.

Clean, low-contamination heating
Stable temp at low pressure
Optional inert gas backfill
For high-value, sensitive parts

High-Temp Box Oven

High-temp box ovens are simple, robust chambers for batch loads on racks, trays, or floor stands. They are the workhorse of many heat treat and production shops.

Simple, robust batch chamber
Racks, trays, or floor loading
Multiple airflow patterns
Workhorse for daily production

Compare Key Specifications

Model	Typical Tmax (°C)	Load type	Best for	Typical parts & materials	Key advantages
High Temp Truck-In Oven	up to 550–600 °C	Single wheeled cart, shelf fixtures	Medium batches, frequent changeovers	Tools, jigs, small castings, R&D samples	Compact footprint, flexible shelving, easy loading
High Temp Cart Oven	up to 600 °C	One or two heavy carts on floor tracks	Large, heavy batches, repeat layouts	Castings, weldments, large fixtures, steel parts	Handles heavy loads, airflow tuned to truck layout
High Temp Vacuum Oven	up to 600–650 °C	Trays or racks inside sealed chamber	Clean, controlled atmosphere processes	Sensitive alloys, electronics, ceramics, powder parts	Low contamination, vacuum/inert gas options, precise control
High-Temp Box Oven	up to 500–600 °C	Racks, trays, or floor stands	General-purpose high-temp batch work	Mixed metal parts, tools, small assemblies	Simple, robust design, daily production workhorse

All dimensions, power ratings and loading capacities shown are typical reference data. ZonHoo industrial ovens are highly customized systems – final usable workspace, external dimensions and connected load will be defined in your project-specific proposal.

Suitable Applications

Suitable High Temperature Applications

ZonHoo high temperature ovens are used across a wide range of heat treatment and high-temperature processes. Below are some common examples – if you do not see your process here, our engineers can still help you evaluate it.

Metals Heat Treatment & Conditioning

Hardening, tempering, and stress relieving of tool steels and alloy steels
Annealing and normalization of forged, cast, or welded components
Aluminum solution heat treatment and aging (T4, T5, T6)
Post-weld heat treatment of fabrications and pressure parts

Advanced Materials, Coatings & Composites

Sintering and debinding of powder metal or ceramic components
High temperature curing of high-performance coatings and resins
Curing and post-curing of high-temperature composites
Burn-off, bake-out, and decontamination cycles

Other High Temperature Processes

High temperature drying and dehydration of dense materials
Heat cleaning of tooling, jigs, and fixtures
Thermal testing and R&D high temperature profiling

Industries Served

ZonHoo high temperature ovens are widely used in industries where parts must survive extreme conditions and still perform flawlessly.

Metals & Heat Treatment

Commercial heat treat shops
Forging and casting manufacturers
Tool and die makers

Automotive & Aerospace

Powertrain and drivetrain component suppliers
Brake, suspension, and steering system manufacturers
Aerospace structures and engine component suppliers

Electronics, Energy & Others

Electric motor and generator manufacturers
Oil & gas, petrochemical, and energy equipment
Industrial machinery and heavy equipment builders

For a full list of industries we serve, contact ZonHoo or visit our industry pages.

Options & Customization

Chamber size, doors, insulation
Airflow patterns (horizontal/vertical/custom)
Loading: racks, carts, rails, truck-in
Heating: electric, gas, IR, hybrid

Safety interlocks & over-temp protection
PLC/HMI, data logging, connectivity
Exhaust, heat recovery & energy options
Standards: CE / ISO / UL (as applicable)

Engineering Specs & Compliance

Temperature uniformity: typically ±3–5 °C at full load; tighter bands available on request.
Heat-up time: sized to your target ramp rates and cycle time, not just empty-chamber performance.
Controls & instrumentation: PID control, multi-point thermocouples, independent over-temperature limiter and safety relays as standard.
Electrical & gas compliance: built to your regional codes and plant standards (voltage, frequency and safety requirements).
Maintenance access: service doors, clean-out panels and component access designed to keep uptime high.
Quality assurance: every industrial oven is inspected, test-fired and documented before shipment; FAT can be witnessed on site or remotely.

High Temperature Oven FAQ

How do I choose between a standard industrial oven and a high temperature oven?

If your process needs temperatures above about 350–400°C, tight uniformity, or long soak times, a high temperature oven is usually the safer and more efficient choice. We’ll review your material, target temperature, cycle time, and quality requirements and then recommend whether you need a high temperature design.

What temperature range do I really need?

Start from your process spec and the material supplier’s recommendations, then add a reasonable margin. For example, if your process runs at 550°C, we might design the oven for 600–650°C to give you flexibility and protect the components. Overspecifying temperature can add cost, so we help you find the right point.

How do high temperature ovens manage insulation and energy use?

High temperature ovens use thicker, higher-grade insulation and thermal breaks to keep shell temperatures under control and reduce heat loss. We also optimize airflow and control strategies so you reach temperature quickly without wasting energy in idle or partial-load operation.

Can one high temperature oven handle multiple processes?

Often yes, as long as the temperature range, cleanliness, and airflow requirements are compatible. Many customers run several recipes in one oven by using fixtures and programmable recipes. If your processes conflict, we may suggest separating them into two chambers or a custom multi-zone design.

What information do you need for an accurate high temperature oven quote?

We’ll ask for part drawings or photos, material and weight per batch, target temperature and tolerance, cycle time, available floor space, utilities, and any standards you must meet. The more detail you share, the faster we can recommend a suitable high temperature oven model and quote.

Need help? See Maintenance & Parts or Commitment-To-Safety.

Contact our sales and engineering professionals to clarify your requirements, get your questions answered, and learn about our oven solutions! Just send us a message or give us a call at your convenience