INDUCTIONHEATINGTECHNOLOGY

https://denkikogyo.co.jp/en/
Shin-Tokyo Building, 7th Floor
3-3-1 Marunouchi, Chiyoda-ku,
Tokyo 100-0005
TEL +81-3-3216-1671 (main)

Unauthorized copying and replication of the contents in this catalog is prohibited.
Product speciﬁcations and numerical values may change without prior notice. (As of May 2023)

Achieve Sustainable Heat Treatment
with DKKHeat treatment: to heat the metal up and cool it down. This is a processing technology tochange the properties of metallic materials by heating up these materials and cooling themdown immediately. In particular the hardening process, which increases the strength of metals,
is an indispensable process for strengthening moving parts of vehicles and machines.
Utilizing the high-frequency power current technology, DKK manufactures high-frequency
induction heating equipment that performs various heat treatment processes such as
hardening, tempering, annealing, and shrink-fitting. We support customers in achieving SDGs
with our energy-saving and eco-friendly high-frequency heating technologies.

Contributing to SocialInfrastructure Improvements• Enhancing safety in the automotive
industry• Securing safety and quality

Promoting Environmental
Management• Promoting carbon neutrality• Efficiency in power consumption• Expansion of environmental
products

DKK will work to actualize
SDGs in 3 areas.

Creation of New Business
Opportunities•N ew utilization of high-frequency
technology

1

INDEX

3

Technology Utilization in Hi-Frequency Induction Heating Equipment

5

Heating Coil Technology

7

Automobile (Gasoline Engines & Motors) & DKK

9Automobile (Powertrain/Steering Components) & DKK

11Construction/Agricultural Machinery & DKK

13

Industrial Machinery & DKK

14

Innovations in Production Equipment

15

Global Environment & DKK

17

DKK’s Global Network2Technology Utilization in
Hi-Frequency Induction Heating Equipment
High Frequency Generator
Achieves energy savings
with high-efficiency
transistor-type generator.

To perform high-frequency induction heating a high-frequency generator is required.
This steadily supplies high-frequency power with specific frequency and output to the coil.
We offer a wide range of generators from space-saving or eco-friendly models tomodels that support the highest levels of output power in the industry.

Product Introduction by Model TypeIoT Functions
A New Ideal Way ofMaintenance withRemote Controlling

In the event of a problem at the customer’s site, sending out engineers from our factory
requires expenses and time. DKK leverages the IoT functions and offers a serviceable
Remote Maintenance System, which fixes the problem while checking on the situation
remotely from our factory. (May not be available depending on the situation.)

Remote Maintenance via VPN Line

Remote Maintenance with a Dedicated PC Kit

Install a unit-type set box with VPN connection function in
the control board.
Accessible to the system remotely and safely from theoutside through the existing network (Neither IP address
modification nor static IP address are required).
Equipment can be inspected and improved remotely.

Connect a FA computer or a dedicated PC kit we provide.
We will fully support and maintain customer’s equipmentwith a remote connection by connecting to the network ina specified procedure.

PLC Sequencer

VPN Connection
Management Server

Control PanelInternet
Hub
Hub

Firewall(A)Router(A)Authentication
Server
GriDRIVE(AS-200)

Windows PC(VPN
Connection
Client)■ TRSC/CTG Series■TRP/PTG Series■ VFG Series

High-response-speed model that simul­
taneously achieves both high output
and digitalization even at high frequency
bandwidth.

Capable of several thousand kWs of
power output, this is a marketableproduct with over 3,000 recorded unitsof sales in the world.

Through utilizing digital controls thisproduct is compact. It has good power
supply efficiency and suppresses cost.

Supported Frequency Range: 30–450kHz
Power Output: 5–300kW

Supported Frequency Range: 0.3–50kHz
Power Output: 10–3,000kW

Supported Frequency Range: 1–15kHz
Power Output: 75–150kW

RemoteMaintenance PC

RemoteMaintenance PC

DWM (DKK Waveform Monitor)

Generator Type

Advantages of Transistor TypeTransistor Type

Vacuum Tube Type

Total Efficiency

95%

60%

Reduce Operation Cost

Required Area

(width 3.8m) × (depth 0.8m) = 3.04m2(width 6.6m) × (depth 1.5m) = 9.9m2

Space Saving
Reduce by 6.86m2
Reduce by 69%

Starting Performance

Immediately

Required Preheating TimeOperation starts immediately
after power is turned on.

By committing to energy savings in the factory, a wide variety of subsidies and preferential tax systems become available.

Actualized 2 Frequency Synthesis Hardening (Patent No. 4121719)
This is a technology to synthesize high and low frequencies applied in a single heating coil.
For example, when a gear is inductively heated the tip of the gear thread is mainly heated by flowing
the higher frequency, and the root of the gear thread is mainly heated by flowing the lower frequency.
Therefore, synthesizing the two different frequencies enables uniform heating of both tip and the rootof the gear thread.

3

VPN Connection

DKK

Comparison with Evacuated Tubular Generator

Item

High-Frequency
Hardening Equipment

GriDRIVE(AS-200)

Workpiece quality can be visually monitored
during machining by Waveform.
Heat Monitoring ● It monitors the workpiece quality bycomparing the waveform pattern from a non-defective
product to check whether the induction heating is performed
reliably.
Flow Volume Monitoring ● It monitors the most importantcooling process factor in hardening by comparing the
waveform pattern from the non-defective product by
capturing the flow meter value.
Positioning Monitoring ● It monitors whether
the positional relationship between the coil andthe workpiece is properly set by comparing the
waveform pattern in reference to the servo andthe displacement sensor value.
It can be installed either independently
or on the control panel.

4

Heating Coil Fabrication using New 3D Printer Technology

Heating Coil Technology

Coils to be Produced with
3D Forming Technology
using Metallic Powder

Excellent Coil Design and Fabrication Technologies
Based on Our Experience and Past Achievements
Optimum Design and
Manufacturing to Meetthe Required Heat
Treatment Specifications

Since the quality of high-frequency induction heating varies greatly depending on the
shape of the coil and the positional relationship between the coil and the workpiece,
the optimum coil design takes into consideration the shape and size of the workpiece.
DKK provides one-of-a-kind custom designs and uses coils produced by skilledcraftworkers to achieve heat treatment quality that meets the customer’s requirements.

In recent years, the requirement for heat treatment quality has been becoming stricter
as the product shape becomes more complicated and the cycle time is shortened.
We highly recommend our 3D printer to produce your heating coils. Producing theheating coils with a 3D printer has a lot of merit as below.

The Most Optimal Coil Design Method ● In accordance with the condition of eachtarget workpiece, a 3D printer enables production of complex shaped coils which are
difficult to produce with general equipment.
High Reproducibility in Coil Production ● Even if the coil shape is complex, we canproduce coils with high reproducibility without being affected by individual differences.
Improvement of Durability ● The coils produced with a 3D printer do not have a brazing pointand have a small risk of water leakage.
Shortening the Production Lead Time ● Production lead time can be drastically shortened byusing a 3D printer for most of the working process.

Brazed Coil3D Modeled Coil

Measuring Position(1)

Crankshaft Hardening Coil

Inboard Groove One-Shot Induction
Hardening Coil(2)

CVJ Shaft Hardening Coil

(4)
(3)

K-kahen (Diameter Variable) Heating Coil
(1) 4.4mm (2) 4.5mm(3) 4.9mm (4) 2.2mm

New Mechanistic Heating Coilthat Changes its Machining
Diameter during Hardening

DKK has developed a new heating coil for movable hardening which can change its
machining diameter to fit on the workpiece shape to have better working efficiency.
This has made it possible to reduce the required number of coils and the replace­ment frequency. (Patent No. 4658027)

Transformation Mechanism● If the workpiece diameter is large● If the workpiece diameter is small■■■■

HeatingHeating
Conductor
Conductor#1#1

WorkWorkpiecepiece(1) 4.4mm (2) 4.5mm(3) 4.9mm (4) 2.1mm

Existing coils and coils made with the 3D printer will have the samemeasurement values under the same processing conditions.

Heating Simulation Technology
DKK suggests the mostappropriate induction
heating system to suit yourneeds with our extensive
simulation method.

DKK utilizes our unique heating simulation to improve the heating quality andtechnology. DKK constantly strives to improve our analysis technology with feed-backfrom our extensive storage of simulation data.
Furthermore, the original coil shape produced for analysis can be manufactured on the
3D printer and completely handled digitally from designing to quality-conditioning.

Generator
Generator
HeatingHeating
Conductor
Conductor#2#2

Flexible
Flexible
Lead
Lead(Varies(Variesdependingdependingonon
diameterdiameter
size)
size)

Appearance of Hardening Operation

Hub Inner Shaft Hardening
CVJ Groove Hardening

Crankshaft Pin Hardening

5

CVJ Shaft Hardening

6

Automobile (Gasoline Engines & Motors)& DKK

Crankshaft Induction Hardening & Tempering Equipment
The heating coil follows
the workpiece to ensurestable hardening quality.

Camshaft Hardening & Tempering Equipment
The specially shaped coils
enable uniform hardening ofcast materials without
unwanted cracking.

There are three target parts to be hardened on the
crankshaft, which are the pin, journal, and flange parts.
The pin part is located eccentrically with respect tothe central axis and transfers reciprocating motion androtational motion. DKK’s hardening facility has a uniquemechanism that allows the coil to follow the eccentric pinpart, and it enables stable hardening of each machined part.
Furthermore, we support both R-baking and flat-baking tosuit your needs.

Wide Range of Mechanical Methods● Clamshell Method● Front-in Front-out Method

The heating coil clamps down on the workpiecefrom above and below like a clamshell closes.
This improves heating and cooling efficiency andensures satisfactory product quality without
any hardening crack initiation. Furthermore, we
achieved a space savings of approximately 50% bydownsizing the facility.

The workpieces are inserted fromthe front port and machined on thepin, journal, and flange parts before
coming out from the same port.
This is applicable for a wide rangeof workpiece sizes from small
motorcycle parts to large parts formarine vessels.

● Horizontal Transfer Method
The workpieces are inserted from one side andmachined from pin part stage, journal part stage, andflange part stage, before coming out of the other side.
The workpieces can be placed in any vertical or
sideways position to pass through the facility. This isapplicable for a wide range of workpiece sizes fromsmall motorcycle parts to large parts for marine
vessels.

● Diameter-Adjustable
MethodThe coils on the upperside can be moved.

The coils on the lower side are
fixed.

The coils are formed by pinchingfrom upper and lower side in asimilar motion to folding alaptop computer.

Motor Rotor Hardening & Tempering Equipment
Induction Hardening of Motor
Parts Indispensable for EV/HVHardening standards can be satisfied
even in thin wall parts by performing
low-distortion selective hardening on
the outer diameter and inner diameter
spline part, with a brief stationary oneshot induction hardening method.

7

The coil diameter changes
automatically according to thedimensions of each workpiece,
and this achieves optimum
hardening. This has made it
possible to reduce the numberof coils used as well as thefrequency of coil replacement.

● Turntable Method
This system carries workpieces ona rotating turntable. Every processing
stage is located around the turntable,
which saves approximately 40% of
the required space needed, compared
to conventional lifting or carrying
style systems.
It is suitable for relatively smaller
sized workpieces for motorcycles
and vehicles.

Supporting Various Workpieces● Automobiles, Trucks, & Buses● Other than automobiles

We have a proven track-record of manufacturing various equipment
according to the number of cylinders, from three to eight cylinders.
Our team will suggest a variety of configurations to suit your needs
including a hardening equipment supporting from three to eightcylinders in one unit.

We also have a proven track-record of manufacturing
crankshafts used in construction machinery,
agricultural machinery, ships, generators, andmotorcycles, etc.

8Automobile (Powertrain/Steering Components)& DKK
Hub Unit Hardening/Tempering Equipment
Our equipment enables productionof high-quality products withextremely low distortion rates
even when the workpiece
shape is complex.

DKK’s Hub Unit Hardening/Tempering Equipment provides satisfactoryheat treatment quality on workpieces with a large diameter difference,grooves, or thin-walls.
We will suggest the most appropriate facility system for your needs,
from our standard technology to our unique high-frequency tempering
technology (Denko-CARRIER HEATER, please refer to page #16).

Wide Range of Mechanical Methods

Shaft Hardening Equipment
Supports a variety of long
workpieces such as drive shafts
and axle shafts.
In order to shorten cycle time, high-precision
scanning hardening is made possible byprocessing two workpieces simultaneously.
Additionally, the inductor scanninghardening system reduces height ofthe machine. A distortion suppression
mechanism can be added as well.

Rack Shaft Hardening/Tempering Equipment
DKK proposes a wide
range of solutions tomeet your needs.
● Direct Energizing Heating Type
MethodIt hardens by applying high-frequency
power current directly on the tooth
surface and the back surface of therack, with minimal distortion byaiming only at the necessary parts.
We have many years of achievementswith this method.

Horizontal Transfer Method● Induction Heating Method
Arbitrary distortion adjustment is achieved with moving andhardening the entire circumference of the back face and tooth
surface by providing a mechanism to straighten the workpieceback, forth, right and left during heating. On the ball screw typeshafts, atmosphere hardening nitrogen gas is available to preventoxidation during heating.
We also support dual-frequency composite hardening in which
the tooth flanks and the ball screws with different heat treatment
specifications are transferred and hardened in a single process.

Turntable Method● Groove Portion Hardening

CVJ Hardening/Tempering Equipment
Supports all types of workpieces, including pieces
with short shafts to pieces with longer shafts.
Supports all types of CVJ (Constant Velocity Joint) workpieces,including typical pieces with short shafts (tri-port joints andball joints) to pieces with longer shafts, internal splines,
and shaftless workpieces.
Additionally, heating can be performed at the same position of thegroove and shaft portions to shorten the processing tact time.

9

The high-precision phasedetermination function supports
the hardening of tri-port joints.
According to the hardening
specifications, movable hardening or one-shot
induction hardening is available.
● Shaft Portion Hardening
The hardening quality isensured with sufficient
hardening depth of the
stepped portion of the shaft.

10Construction/Agricultural Machinery & DKK
DKK’s hi-frequency induction heating equipment is also utilized to harden components for engines, powertrains,and crawlers of construction and agricultural machinery. Some of this equipment will be introduced below.

Axle Tube Hardening & Tempering Equipment for Large Construction Vehicles
Hardening & Tempering ofPowertrain Components forConstruction Machinery

Crawler Hardening Equipment for Super-Large Construction Vehicle
Process on Three Parts,
the Tread, the Claw, andthe Hole Continuously in
One Equipment

It hardens the crawler track part for supersized excavators (width 800mm, depth
540mm, height 280mm, and weight 260kg).
It enables hardening of the tread, stud claw (where the ground is gripped whenrunning), and the hole (where the tracks are jointed through the pins), whilefeeding the workpiece sideways.

It hardens/tempers moving the heating coils while the power shaft part “axle tube”
of larger construction vehicles rotates. The maximum possible heat treatment size
is up to 400mm in external diameter, the hardening range is 1,200mm and theallowable upper limit weight of workpiece is 1,500kg.

Sprocket Hardening Equipment for Construction Vehicles
Hardening Equipment for Large Parts
Hardening Large Workpieces
Including 5m-long Shafts andSprockets with an Outer
Diameter of 800mm

Stationary Single-Shot
Hardening on Large Sprocket
for Crawler Tracks

It hardens the sprocket (gear part) of construction machinery, which transmits
power to the crawler tracks. It enables stationary one-shot hardening of large
components by using a high-output generator.

Hardening of a wide variety of components
is possible, including 5m-long shafts
and sprockets with an outer diameter of
800mm.

The photo shows the hardening of the trolley for a gantry
crane (outer diameter 500mm, height 100mm).

11Photo shows the hardening of the sprocket with an outer diameter of
700mm, and the weight of 200kg.

12

Industrial Machinery & DKK

Innovations in Production Equipment

DKK’s high-frequency induction heaters are widely used for hardening or annealing of ball screws, liner motion components orlarge-sized rings as well as paint drying, heating of wire rods and steel plates in the industrial machinery field.
Some of the typical facilities are introduced below.

Ball Screw Hardening Equipment
Enables to harden quite longball screws up to 5,000mm.

Downsized the total length of the equipment by introducing horizontal
coil-movable hardening method. We design and manufacture the equipment
according to the required workpiece diameter and length.

DENKO-CUBO
Compact and General-Purpose Type
High-Frequency Hardening Equipment
An innovative and neatly compact high-frequency
hardening equipment integrating generator, control
panel, machinery and water tank in one single cabinet.
Transportable by one 4t truck and capable in a container,
we have plenty of exporting experience as well as in Japan.
In addition, it requires short period of time forstart-up work.

Appearance of the ball screw hardening(50mm of outer diameter and 5,000mm of length)

Seamless Hardening Equipment for Large-Sized Rings
Enables to harden large-sizedrings for wind turbines
seamlessly.

Whenever we carried out movable hardening large-sized rings, the conventional
hardening method (one-way scanning) used to have a soft zone between thehardening start point and the end point. DKK achieves seamless hardening byusing two coils at the same time and carrying out movable hardening in the
opposite direction. With our unique hardening method bringing two coils close
to each other at the start and end point, it enables to eliminate the soft zone in
the hardening layer. (Patent No.: 5903455 Patent No.: 6146916 Patent No.:
6403960 Patent No.: 6671830)

Enables to harden quite large rings up to 3,000mm of diameter.

13

Denko-CARRIER HEATER
High-frequency induction
heating achieves the samelevel of tempering quality
as electric furnace.

Comparing to electric furnace, our high-frequency hardening equipment
is energy-saving, space-saving, low-cost, shorter processing time and low
emission of carbon dioxide. In addition, the same level of tempering effectas electric furnace can be obtained.
Denko-CARRIER HEATER enables to automate all the hardening andtempering processing lines by retrofitting to your existing facility,
and it makes easier the reconfiguration of processing line layout.

Introduction case example:
High-Frequency Hardening Facility (left) and Denko-CARRIER HEATER (right)

14

Equipment Specification

Global Environment & DKKSteam Supply AmountMax 160kg/h

Max 450kg/h

Generator TypePTG - 20 - 30

PTG - 20 - 100

Frequency

Heat Generating Unit
Heating Coil

20kHz

Generator Output

30kW

100kW

Power Supply Capacity

3Φ 200V/400V 50kVA

3Φ400V 150VA

Device Size
(W × L × H)

Superheated Steam Generating Equipment

Boiler SteamSuperheated
Steam

High-Frequency Generator
Control Panel
Operation Panel

1,000 × 800 × 1,820mm
Steam Supply Amount: Require consultation if greater than 450kg/h

Superheated Steam Using High-Frequency Induction Heating toReduce Food Waste (Extending the Shelf Life) and Drying Food Residue for Recycling (Reuse)
Superheated Steam Generating Equipment

What is superheated steam?
It is a clear and colorless water vapor generated from saturated steam evaporated at 100˚C by heating at even higher
temperatures. This technology is widely used in commercially available home electronics such as steam oven ranges etc.

Mechanism of Superheated Steam Generation
It generates above 100°C water vapors by high-frequency induction heating, which is known to have zero direct emissions of CO2.

Steam
SteamUnit
Water
Generating
Water Generating
Unit

BoilerBoiler

Water
WaterVapor
Vapor
100°C
100°C

SuperheatedSuperheated
Steam
Steam

SuperheatedSuperheated
Steam
SteamUnit
Generating
Generating Unit

Usage Example 1

Usage Example 2

Rotating Kiln Method

Drop Separation Method

Superheated steam is fed into
the inside of the kiln, heating thematerial while rotating it.
The processing time can be set,
making it possible to adjust
the amount of time ofthe superheated steam
Superheatedirradiation (cooking &Steamroasting). It can also be
attached to a kiln you
currently use.

Example:Buckwheat Seeds

Superheated Steam

ReactorSuperheated
Steam

Superheated SteamGenerating Equipment

or moreHigh-Frequency
High-Frequency
Induction
HeatingInduction Heating

Superheated steam and material(mainly grains) are fed in from the
top of the machine, and theworkpieces are processedas they fall. This method iswell-suited for sterilizing
grains such as rice andbuckwheat seeds, andthe short processing
time has little effecton their taste.

Specimen

100°C
100°C
or moreCombustion (Gas),
Combustion
Heater or (Gas),
Heater or

Example: Roasting
Coffee BeansSuperheated SteamGenerating Equipment

Specimen
Dispenser

Rotating Kiln
Processing Equipment

SpecimenPrimary Uses
● Cooking● Sterilization & Sanitization● Antioxidation● Drying(1) To effectively reduce the amount of food loss and waste by extending the expiration date of foods(Ex: Roasting coffee beans with Superheated Steam Generator)(2) To continually recycle food residue by drying garbage(Ex: Drying dripped coffee residue with Superheated Steam Generator)

Configurations

BoilerBoilerPrepared
PreparedbybyCustomers
Customers

Water Vapor
Water
Vapor
(Max
100°C)(Max 100°C)

Superheated SteamSuperheated
Steam
Generating
Equipment
Generating Equipment
High-Frequency Induction Heating
High-Frequency Induction Heating

Max 700°C
Max 700°C

Superheated SteamSuperheated
Max 700°CSteamMax 700°C

Automatic
Automatic
Processing
Equipment
Processing(Rotating
KilnEquipment
Method)(Rotating Kiln Method)

Usage Example 3

Usage Example 4

Cyclone Method

Belt Conveyor Method

Superheated steam and material(mainly powder) are fed in from
Example: Rice Branthe top of the machine, and theworkpieces are processed as they
Superheated Steamfall. After processing, a cyclone isused to separate and recover
the superheated steam andthe material (powder).
Specimen
This method can beused for sterilizationof rice bran and othersuch materials, andhas a proven trackrecord of use for
Reactorcommercialization.

DKK Execution
DKK Execution

Cooling Box

Specimen
Dispenser

15Superheated
Steam
Generating
Equipment

Feed processing materials into
the equipment and irradiate withsuperheated steam while moving
along the conveyer belt. Heat
treatment on cooking ingredientsand drying food waste residue
can be performed by adjusting
the internal temperature andthe operation time. Sincecontinuous processing is SuperheatedSteampossible, it is suitable forlarge processing volume
of objects to be heated.
It is also possible toperform in consistentline operation byconnecting theequipment withthe preceding andthe following
Belt Conveyor
processes.
Processing Equipment

Example: Vegetables

Superheated SteamGenerating Equipment

Specimen

Specimen

16

DKK’s Global Network
We have 5 production/maintenance companies as well as heat treatment processing/partner companies in 4 countries
overseas in order to keep our equipment in perfect condition through regular maintenance, and to be able to respondquickly in case of emergency.

DACPOL Co., Ltd. (Business Affiliate Partner)
Facility Maintenance Service, Heating Coil Business
Pulawska34
05-500 Piaseczno/WARSAWPolandTEL : +48-22-703-51-00
FAX : +48-22-703-51-01■ Business Locations
KOREA DENKI KOGYO Co., Ltd.
(Production Base)
Facility Manufacturing, Facility Maintenance
18, Namdongdong-ro 33beon-gil, Namdong-gu Incheon,
Korea
TEL : +82-32-713-8850
FAX : +82-505-070-8850

Headquarters, Sales Department,
Radio Frequency Division
Shin-Tokyo Building, 7th floor
3-3-1 Marunouchi, Chiyoda-ku,
Tokyo 100-0005
TEL : +81-3-3216-9433

Okazaki Business Office
4-1 Kiyokuchi, Kamimitsugi-cho, Okazaki-shi,
Aichi 444-0246
TEL : +81-564-57-6560
FAX : +81-564-57-6789

Osaka Branch

DENKI KOGYO (CHANGZHOU)HEAT TREATMENT EQUIPMENT Co., Ltd. (Production Base)
Facility Manufacturing, Facility Maintenance, Heating Coil BusinessNo.7 Lvshu 2nd Road, Xuejia town, Xinbei District, Chang-zhou City, Jiangsu, China
TEL : +86-519-8512-5233

Esaka Nack Building, 2-30 Toyotsu-cho, Suita-shi,
Osaka 564-0051
TEL : +81-6-6378-0162
FAX : +81-6-6378-0163

DKK of America, Inc. (Maintenance Base)
Facility Maintenance Service, Heating Coil Business6345 South Inwood Drive Columbus IN 47201, U.S.A.
TEL : +1-812-342-1700
FAX : +1-812-342-1600■ Production Bases
Atsugi Plant, Radio Frequency Division4052-1 Nakatsu, Aikawa-machi, Aiko-gun,
Kanagawa 243-0303
TEL : +81-46-285-1411 (main)
FAX : +81-46-285-2298

DKK (THAILAND) Co., Ltd. (Production Base)
Facility Manufacturing, Facility Maintenance, Heating Coil Business
Building No. 899/56 Mu 21 Soi Chongsiri Parkland.
Khlong Arsia Road, Bang Phli Yai Sub-district,
Bang Phli District, Samut Prakan Province 10540 Thailand
TEL : +66-23-319-860■ Entrusted Heat Treatment Base
Denko Techno Heat Co., Ltd.
Kariya Plant (Headquarters)
15 Ogumi, Hajodo-cho, Kariya-shi,
Aichi 448-0804
TEL : +81-566-21-0681 (main)

DTHM, S.A. DE C.V.
(Maintenance, Entrusted Heat Treatment Base)
Leon Plant: Entrusted Heat Treatment
William Thomson 103 int.A Col.Parque Industria Leon-Bajio, C.P.37680 Leon,
Gunanajuato, Mexico
TEL : +52-477-689-1279

Abasolo Plant: Entrusted Heat Treatment, Heating Coil Business
Calle Jose Maria Pascual No.202, Parque Industrial Marabis, Abasolo,
Guanajuato Cp. 36970 Mexico

Atsugi Plant
4052-1 Nakatsu, Aikawa-machi, Aiko-gun,
Kanagawa 243-0303
TEL : +81-46-286-8175 (main)
FAX : +81-46-286-1065

Hamamatsu Plant
170 Tsumori-cho, Minami-ku, Hamamatsu-shi,
Shizuoka 430-0815
TEL : +81-53-441-8451 (main)
FAX : +81-53-441-8896

Suzuka Plant

We also have facilities
who undertake entrusted heat treatments.
Denko Techno Heat and DTHM provide consigned
processing services for heat treatment using our
induction heating equipment.

17

1820-39 Mikkaichi-cho, Suzuka-shi,Mie 513-0803
TEL : +81-59-382-1829 (main)
FAX : +81-59-382-1419

Shiga Plant
10 Satsukigaoka, Minakuchi-cho, Kouka-shi,
Shiga 528-0062
TEL : +81-748-63-3831 (main)
FAX : +81-748-63-3833

18