TOYO ROKI INDUSTRY CO., Ltd.

From design to maintenance of custom-built industrial furnaces — proven technology built on over half a century of experience.

We propose the optimal solution for a wide range of heat treatment processes.

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Our Industrial Furnaces

Low initial cost. Easy maintenance. And energy-saving.

From mesh belt continuous heat treatment furnaces with our proprietary burners (quenching, tempering, normalizing, annealing) to hot-air circulation T6 furnaces, batch furnaces, car-bottom furnaces and DX/RX gas atmosphere furnaces (hardening & tempering, brazing, carburizing, normalizing, annealing). By eliminating unnecessary equipment, our simple designs keep initial costs down and make daily maintenance easy.

Quality, workability, ease of maintenance and energy efficiency. Putting our customers’ voices first, we examine every angle and design each furnace fully to order. Because we design in 3D CAD (SolidWorks), you can review the finished design in detail before installation.

A hot-air circulation batch furnace delivered by Toyo Roki
ORDER MADEFully custom design, putting the customer’s voice first
3D CADReview the finished design easily in 3D CAD (SolidWorks)
ORIGINAL BURNERMesh belt continuous heat treatment furnaces with proprietary burners
SIMPLEA simple structure without unnecessary equipment
OUR POLICY

Our Policy

Rather than selling packaged equipment, we put the customer at the center and design each industrial furnace together with them — considering not only initial cost but also work efficiency, running costs and ease of maintenance from every angle — to meet their exact requirements.

After installation, we handle all after-sales support in-house, including maintenance and improvement proposals, while exchanging information closely with our customers.

Our policy: maintenance, proposal, design and sales, all centered on the customer Customer Maintenance Proposal Design Sales
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Product Line-up

Aluminum Alloy Solution Heat Treatment Furnace
PRODUCT 01

Aluminum Alloy Solution Heat Treatment Furnace

TY-GVN-500 / TY-GVN-1000

Our hot-air circulation T6 furnaces achieve ±5°C of the set temperature, as confirmed by in-furnace temperature distribution measurements. The elevator type shortens the time from the end of soaking to quenching to under 10 seconds, enabling high-quality T6 treatment. We also design a variety of other configurations, such as tray conveyor types.

Quenching within 10 seconds from burner-off to immersion enables very high-quality heat treatment equivalent to MIL standards. With program control, once the parts are set on the tray, everything from heating to solution treatment and aging is fully automatic.

Effective chamber size
TY-GVN-500: 2000×800×800
TY-GVN-1000: 2300×1100×1100(D×W×H mm)
Max. external dimensions
TY-GVN-500: 2550×4100×5457
TY-GVN-1000: 3050×6712×6177(D×W×H mm)
Load per batch
500–1500 kg
Heat source
Gas (LPG or 13A)
Main treatmentsT4, T5, T6 and O tempers
Roller Hearth Continuous Furnace
PRODUCT 02

Roller Hearth Continuous Furnace

TY-RHF-1000

Ceiling-suspended flat-flame burners reduce the chamber volume, and heat exchange of the combustion air improves combustion efficiency by about 20% compared with our previous design.

We also have experience with radiant tube burner specifications.

Effective chamber size
12500×800×250(D×W×H mm)
Max. external dimensions
16800×2300×5400(D×W×H mm)
Heat source
Gas (LPG or 13A)
Main treatmentsQuenching, tempering, annealing, normalizing, bright annealing
Mesh Belt Continuous Furnace
PRODUCT 03

Mesh Belt Continuous Furnace

TY-MGF-700 / TY-MGF-900 / TY-MGF-1000

For gas-fired furnaces, our proprietary flat-flame burners allow an extremely compact furnace chamber, achieving low fuel consumption.

In addition, a heat exchanger recovers exhaust heat to raise the combustion air temperature, further improving fuel efficiency.

Because the burners are ceiling-mounted, no combustion space is needed as with side-mounted burners, increasing output per installation area. A new insulation method transfers heat efficiently to the products for stable, high-quality heat treatment.

Throughput
300 kg/h and up
Heat source
Gas (LPG or 13A)
Layout (hardening & tempering)
Drive unit → Hardening furnace → Oil or water quench tank → Conveyor → Tempering furnace drive → Oil fume combustion chamber → Tempering furnace → Water-cooling shower
Layout (normalizing / annealing)
Drive box → Heating furnace → Air-cooling zone (slow-cooling zone)
Main treatmentsContinuous hardening & tempering, quenching, tempering, normalizing, annealing
Atmosphere Gas Generator
PRODUCT 04

Atmosphere Gas Generator

RX: TY-ERF-45 / TY-ERF-80 DX: TY-EDF-120

We specialize in endothermic (RX gas) and exothermic (DX gas) atmosphere gas generators. For RX gas, we have experience with both propane and city gas.

Their simple structure makes the mechanism easy to understand and maintenance easy.

RX gas, long used in non-oxidizing atmosphere furnaces, is relatively easy to handle and produces high-quality results. We mainly recommend automatic CO2 control for stable production management.

Endothermic RX gas generator
RX gas output: 45 m³/h (TY-ERF-45) / 80 m³/h (TY-ERF-80)
Operating temperature: 1050°C
Heat source: electric Feed gas: LPG, 13A
Exothermic DX gas generator
DX gas output: 120 m³/h (TY-EDF-120)
Outlet monitoring temperature: up to 800°C
Heat source: propane, 13A, butane
Main treatmentsHardening & tempering (quenching, tempering), brazing, carburizing, normalizing, annealing
Mesh Belt Continuous Brazing Furnace
PRODUCT 05

Mesh Belt Continuous Brazing Furnace

TY-MEB-500

Our brazing furnaces are designed with reduced heater resistance to avoid, as far as possible, downtime caused by heater replacement. No nitrogen purge of the heater terminals is required, eliminating unnecessary costs.

We use new insulation materials to further improve energy efficiency.

A dense heater arrangement reduces the load on each heater, and a combination of multi-tap transformers and SCRs enables precise temperature control. This arrangement achieves a temperature uniformity of ±3°C without a circulation fan.

We recommend RX gas as the atmosphere gas. Compared with the commonly used DX gas, the flow of the brazing filler metal and the gloss of the finish differ greatly, and higher-quality production is possible at running costs not much different from DX gas.

Effective chamber size
4200×500×260(D×W×H mm)
Opening width 600×230
Heat source
Electric 150 kW
Atmosphere gas
RX 80 m³/h
Configuration
Drive unit, preheating zone, heating zones 1–3, cooling sections 1–4
Main deliveriesTaito Kogyo Co., Ltd. (Toei Plant) / Heisei Kogyo Co., Ltd. (Okazaki No. 2 Plant) / Jonichi Kogyo Co., Ltd. (Head Office & Akita) / Yagata Kogyo Co., Ltd. / Nishiyama Seisakusho Co., Ltd. (Akita Plant)
Batch Furnace
PRODUCT 06

Batch Furnace

TY-BGF-800 / TY-BGF-1600

High turndown-ratio burners enable low CO2 emissions and control from low to high fire. A new insulation method plus door locks reduce heat loss, and heat exchange of the combustion air achieves about 30% energy savings compared with our previous furnaces.

Effective chamber size
TY-BGF-800: 1000×2800×900
TY-BGF-1600: 1400×3300×1200(D×W×H mm)
Max. external dimensions
TY-BGF-800: 3100×4000×4200
TY-BGF-1600: 3575×5490×6000(D×W×H mm)
Heat source
Gas (LPG or 13A)
Main treatmentsQuenching, interim tempering, annealing, normalizing, spheroidizing annealing
Car-Bottom Furnace
PRODUCT 07

Car-Bottom Furnace

TY-DGF-1500

Compared with typical car-bottom furnaces, additional small burners allow more precise temperature control. Door locks and heat exchange of the combustion air improve combustion efficiency by about 30% compared with our previous design.

Effective chamber size
4200×1400×950(D×W×H mm)
Max. external dimensions
5760×4000×5460(D×W×H mm)
Heat source
Gas (LPG or 13A)
Main treatmentsQuenching, tempering, annealing, normalizing, spheroidizing annealing
Pusher Furnace
PRODUCT 08

Pusher Furnace

Main treatmentsQuenching, tempering, normalizing, annealing
Hot-Air Circulation Furnace
PRODUCT 09

Hot-Air Circulation Furnace

Shuttle-type continuous furnace TY-HCFT-3000

With the shuttle type, loads are set alternately for continuous operation. Even when the total cycle exceeds 10 hours, a second load can be set in advance on one side so that two loads are processed automatically, improving workability.

Effective chamber size
2500×1100×1000(D×W×H mm)
Max. external dimensions
3000×9000×4800(D×W×H mm)
Heat source
Gas (LPG or 13A)
Main treatmentsTempering, annealing, stress relief

* A 3D model is shown for contractual reasons.

Elevator-Type Oil Quench Tank
PRODUCT 10

Elevator-Type Oil Quench Tank

Rotary Workpiece Loader
PRODUCT 11

Rotary Workpiece Loader

OTHERS

Other Equipment

  • Automatic continuous batch-type processing furnaces
  • Reducing-atmosphere mesh belt continuous furnaces (quenching, normalizing, annealing, carburizing, etc.)
  • Reduction furnaces (N2/H2 mixed atmosphere)
  • Drying furnaces (batch / continuous; gas or electric)
  • Design and manufacture of instrumentation (control panels and circuits)
  • Maintenance, modification and energy-saving upgrades of industrial furnaces (ours and other makers’)
  • Auxiliary equipment such as workpiece loaders and conveyors, etc.

For any other questions about industrial furnaces, please contact us.

Contact us
PROFILE

Company Profile

Company name
TOYO ROKI INDUSTRY CO., Ltd.
Representative
Keisuke Kiuchi
Head office
3-8-45 Kamitsuchidana-naka, Ayase-shi,
Kanagawa 252-1113, Japan
TEL. +81-467-76-3241
FAX. +81-467-78-0197
Capital
10 million yen
Established
1974
Main business
Design and manufacture of industrial furnaces, instrumentation, design and manufacture of auxiliary equipment, maintenance
Employees
3 directors, 5 employees (as of January 2020)
Banks
MUFG Bank, Yokohama Hakuraku Branch
The Bank of Yokohama, Yokohama Ekimae Branch
The Kanagawa Bank, Koza-Shibuya Branch
ACCESS

Access

Head office / Factory
3-8-45 Kamitsuchidana-naka, Ayase-shi,
Kanagawa 252-1113, Japan

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HOW TO CONTACT

Contact

Please contact us by e-mail or fax with the following information.

  1. Company name
  2. Name of the person in charge
  3. Contact details
    (phone or mobile, fax, e-mail)
  4. Your inquiry
    * A brief description is fine.
CONTACT US

General Affairs Department

Contact person: Kiuchi

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