Heat Treatment Ovens for Precise, Repeatable Metal Heat Treating
ZonHoo designs and manufactures industrial heat treatment ovens and furnaces for customers who cannot compromise on hardness, strength, or dimensional stability. From small tools and gears to large welded fabrications, our heat treatment systems give you tight control over temperature, soak time, and atmosphere so every batch comes out right the first time.
CE
ISO
What Is a ZonHoo Heat Treatment Oven?
A ZonHoo heat treatment oven is an industrial thermal processing system used to change the microstructure and mechanical properties of metals, alloys, and other engineered materials. Typical processes include tempering, annealing, stress relieving, aging, and post-curing under carefully controlled time–temperature profiles.
Compared with a general-purpose industrial oven, a dedicated heat treatment oven is optimized for tighter temperature uniformity, longer soak times, recipe repeatability, and, when needed, controlled atmosphere operation. This allows you to hit hardness and strength targets with less distortion, fewer scrap parts, and shorter qualification cycles.
Key characteristics of ZonHoo heat treatment ovens include:
- Defined working temperature ranges matched to your process (tempering, annealing, stress relieving, aging, post-curing, etc.)
- Heavy-duty, welded steel construction designed for 24/7 industrial heat treatment service
- Airflow patterns designed around your actual fixturing and load geometry, not an empty test chamber
- Optional inert gas or vacuum systems to protect surfaces and reduce oxidation during heat treatment
- Recipe management, data logging, and connectivity options to support audit-ready heat treatment furnace operation
Available Heat Treatment Oven Models
Tempering Oven
Tempering ovens are used after quenching to reduce brittleness and bring hardened steel, tools, and springs to the specified toughness and hardness range.
- Typical working range: 150–650°C (300–1200°F)
- Suited for: cutting tools, dies, springs, gears, fasteners
- Designed for repeatable part-to-part temperature and minimal distortion
- Optional multi-level fixtures and carts for high-volume production
Annealing Oven
Annealing ovens heat parts slowly and cool them in a controlled way to improve machinability, relieve internal stresses, and refine grain structure.
- Typical working range: 500–900°C (930–1650°F)
- Ideal for: carbon steel, stainless steel, copper, brass, and aluminum alloys
- Uniform heating for large weldments, castings, and forgings
- Supports ramp-and-soak recipes for complex annealing cycles
Stress Relieving Oven
Stress relieving ovens are dedicated systems for lowering residual stresses in welded fabrications, flame-cut parts, and cast components.
- Typical working range: 300–700°C (570–1290°F)
- Optimized for large, heavy weldments and fabricated frames
- Uniform airflow and structural support to minimize distortion
- Common in Metal Heat Treatment shops, Automotive frames, and Foundry applications
Post-Curing Oven
Post-curing ovens are used to complete the cure of resins, coatings, and composites after molding, impregnation, or adhesive bonding.
- Typical working range: 80–220°C (175–430°F)
- Ideal for: composite parts, impregnated windings, adhesive joints
- Very stable temperature control for long soak times
- Bridges between Industrial Curing Oven and heat treatment applications
Aging Oven
Aging ovens provide precise time–temperature control for aluminum and other precipitation-hardening alloys to reach required mechanical properties.
- Typical working range: 150–260°C (300–500°F)
- Designed for aluminum profiles, castings, wheels, and structural parts
- Tight uniformity and air circulation across long loads and racks
- Common in Automotive, Electric Motor, and Aerospace component production
Vacuum Heat Treat Oven
Vacuum heat treatment ovens provide high-temperature processing in a low-pressure environment with optional inert gas quench.
- Typical working range: up to 1200°C (2200°F), depending on design
- Clean, bright surfaces with minimal oxidation and discoloration
- Ideal for high-value tooling, precision components, and alloy steels
- Optional multi-chamber systems for heat, quench, and temper in one line
Heat Treatment Buyer Scenario Table
| Plant situation / scenario | Main parts & materials | Primary quality target | Recommended heat treatment oven | Helpful options & configuration ideas |
|---|---|---|---|---|
| Jobbing heat treat shop with mixed small batches | Cutting tools, gears, shafts, small components (alloy & tool steel) | Stable hardness with low distortion, fast changeover between recipes | Tempering Oven | Multi-level tool fixtures, combination airflow, recipe library, batch reporting |
| Fabrication shop adding in-house heat treat | Large welded machine frames, flame-cut plates, structural parts | Stress relief to reduce distortion and cracking after welding | Stress Relieving Oven | Reinforced floor, high load capacity, ramp-and-soak control, door switches, data logging |
| Aluminum extruder or wheel plant | Aluminum profiles, wheels, castings, structural components | Yield strength, dimensional stability, consistent aging results | Aging Oven | Side-to-side airflow, rack/trolley system, tight uniformity mapping, energy-efficient insulation |
| Motor / transformer manufacturer | Stator/rotor stacks, windings, impregnated coils | Full cure of resins and varnishes, low noise, low core loss | Post-Curing Oven | Gentle airflow to protect windings, long soak capability, exhaust management, process data export |
| Composite or bonding workshop | Composite laminates, glued assemblies, bonded structures | Complete post-cure, stable dimensions, no hot spots | Annealing Oven | Multi-zone control, uniform airflow around molds, part temperature sensors, recipe templates |
| Precision tooling & high-value components | High-alloy tool steel, molds, dies, aerospace hardware | Clean surfaces with minimal oxidation, tight tolerances | Vacuum Heat Treat Oven | Multi-chamber or single-chamber design, high vacuum, quench pressure options, audit-ready data package |
| Mixed production needing surface protection | Alloy steels or stainless parts sensitive to scaling | Reduced oxidation and decarburization without full vacuum investment | Inert Gas Ovens | Gas circulation and oxygen monitoring, tight sealing, integration with existing handling |
| Growing plant replacing old furnace | Combination of weldments, machined parts, and aluminum components | Higher throughput, energy savings, better documentation and safety | Continuous Ovens | Layout optimization, loading concept study, safety interlocks, MES/SCADA connection, service package |
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
ZonHoo heat treatment ovens are used across a wide range of thermal processes:
Cooling & Surface Finishing
- Pre- and post-heat treatment cycles for Metal Heat Treatment shops
- Stress relief before machining, grinding, or shot peening
- Tempering after induction or flame hardening
Heat Treatment & Conditioning
- Tempering, annealing, and stress relieving of steel parts
- Aging of aluminum and other precipitation-hardening alloys
- Post-curing of resins, coatings, and composites
Driving & Flow Optimization
- Integrating new heat treatment ovens into existing production cells
- Reducing handling time with cart-loaded and rack-loaded layouts
- Stabilizing throughput before downstream machining or coating
Industries Served
ZonHoo heat treatment ovens are widely used in:
- Metal Heat Treatment service centers
- Automotive components (gears, shafts, suspension parts, wheels)
- Aerospace structures, fasteners, and precision machined parts
- Foundry and castings machining lines
- Metalworking and fabrication shops
- Electric Motor and powertrain component production
- Tool & die manufacturing and refurbishment
- General machinery and equipment manufacturing
For a full list of sectors: see all industries we serve →
Options & Customization
As an OEM heat treatment oven manufacturer, ZonHoo can customize each system around your parts, recipes, and quality requirements:
- Custom chamber dimensions, load heights, and door styles
- Floor-loading, Truck-In Oven carts, or rack systems for flexible loading
- Horizontal, vertical, or combination airflow patterns tuned by CFD
- Multi-zone temperature control with independent monitoring
- Inert gas systems or vacuum chambers for protective atmospheres
- Integrated quench tanks, cool-down zones, or transfer carts
- PLC + HMI control packages with recipe storage and data logging
- Connectivity for plant MES / SCADA and remote diagnostics
Engineering Specs & Compliance
Every ZonHoo heat treatment oven is built for industrial duty cycles and safety:
- Temperature uniformity tuned to your specification (often ±5°C or better in the qualified workspace)
- Insulated, reinforced enclosures with robust door seals and safety interlocks
- Independent over-temperature protection and airflow monitoring
- Electrical panels and wiring designed to meet major global standards (such as CE, UL, or local regulations, as required)
- Optional calibration and uniformity mapping services with documented reports
FAQ
How do I choose the right heat treatment oven model for my parts?
Start from your process (tempering, annealing, aging, stress relieving), maximum part size, and required throughput. Our engineers will compare your data with our standard heat treatment oven models and show you whether a standard size or a custom solution is more cost-effective.
What temperature uniformity can ZonHoo heat treatment ovens achieve?
Most applications are specified at ±5°C or ±10°C within the usable workspace. For critical aerospace or tool-steel work, we can engineer the oven for tighter uniformity and provide uniformity mapping as part of start-up.
Can a single oven handle multiple heat treatment recipes?
es. With multi-zone control and recipe management, one industrial heat treatment oven can run different parts and processes, as long as the required temperature ranges and atmospheres overlap. We’ll help you define safe recipe limits during the Oven system planning stage.
How do I integrate a new heat treatment oven into my existing line?
ZonHoo supports you with layout reviews, loading concept proposals, and utility requirements. We coordinate with your mechanical and electrical teams and can also provide on-site Install & Engineering supervision.
What after-sales support do you offer?
ZonHoo provides commissioning, operator training, spare-parts packages, and long-term Maintenance and parts service. Remote diagnostic options are available on many control systems to reduce downtime.
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