Thermal One-stop WELCON
Creation of novel structure by bonding technology, which will lead to create novel function.

Company ProﬁleManagement Philosophy

Award history

1. Contributing to the development of society
through technological innovation

2. Enjoy creating, pursuing change anddiscrimination

3. Customers, business partners, suppliersand employees are all pleased

4. Give hope to the region and contribute torevitalization

Development concept: M3M3 thermal countermeasure solution utilizing diﬀusion bonding, becoming a top manufacturer in providing M3 products①Minimum size
Pursuing a small size
②Minimum energy

Pursuing energy saving of products and systems③Miniaturization
Pursuing new features with a ﬁne structure
We will provide solutions besed on our development concept of "M3", applied not only to the size and performance of the product but also its
production with as less energy as possible.

Products
Product line-up

Technical features
WELCON's core technologies are twofold. One is design / development technology related to "structure / thermal control" , and the other ismanufacturing technology called "diﬀusion bonding”. We have accumulated results from prototype development to mass production by applying theirtechnology.
WELCON's products have a ﬁne ﬂow path structure called "microchannel". WELCON utilizes the technical know-how of design and development of
microstructures, and are pursuing to embody novel performance and novel functions that have never existed before. WELCON implements ﬁnestructures in products by diﬀusion bonding. Diﬀusion bonding makes it possible to manufacture products with a three-dimensional hollow structurethat are diﬃcult to manufacture by ordinary machining.

Product features
The ﬁne structure gives out products novel performance that was not found in conventional products.

these products have precise design and manufacturing know-how such as control of plastic deformation.

They do not require brazing materials and have high pressure resistance, corrosion resistance, and repeatability.

About standard products
We can provide "standard products", for example heat countermeasure parts such as heat exchangers and heat sinks.
They are packed with the know-how of WELCON, which has been advancing as a R&D company from the beginning.
Regarding the price, the unit price varies depending on the number of orders. Please contact us for stock support.

About custom-made prototype development
In the case of standard products speciﬁcations, if the size and shape are diﬀerent, or if the required performance is not satisﬁed, we can "customize thestandard products " and "develop a prototype from scratch" according to the customer's speciﬁcations.

Products
Micro Channel Heat Exchanger

High pressure resistance, very compact,business card size, high eﬃcient heat exchanger
Heat exchange eﬃciently could be improved by the microchannel,
which could realize miniaturization of products. WELCON manufactures
heat exchangers of various sizes and materials. We also oﬀer custom
ordersforfactories,

refrigerators,

airconditioners,

fuelcells,automobiles, etc.

Features●Diﬀusion bonding: No brazing material is used, and the base material is not
melted and is bonded as a solid.
●Achieves corrosion resistance, pressure resistance, and repeatability●Smaller and lighter than existing products without degrading heat exchange
performance●Contributes to reducing the amount of refrigerant used in the entire system●High eﬃciency contributes to shortening heat exchange time

Liquid Cool Micro Channel Heatsink

Eﬀectively for removing heat fromthe high heat density bodies
In the commonly used "single ﬂow path", there is "heat variation" on thecooling surface. WELCON's ﬂuid distribution design technology iseﬀective in heat-absorbing heat from high heat density bodies byuniform cooling.

Features●Achievement low ﬂow rate and low thermal resistance compared toheat sinks that do not have microchannels●By improving the heat-absorbing density compared to conventional
products, it is possible to reduce the size, weight, simpliﬁcation, andenergy saving of the pump and pipe arrangement.

For more information

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CoreThermal One-stop
Respond to Thermal Control issues with one-stop
WELCON provides optimal solutions to our customers' technical issues.
One-stop support is available: product planning, R & D, From prototypes to mass production.
We have a wealth of experience in achieving mass production.
We are also actively working on the application of the latest academic technology. We support research and development from the prototype phase.
"Thermal One-stop" is one of WELCON's strengths.

Eﬀorts for mass production
WELCON sincerely would like to tackle with customer's challenges by providing novel
features with "micro-three-dimensional structures" and by stable producing such productswith good quality.
At our factory, the data obtained in daily production feeds back to help improve production
technology.
WELCON will provide customers with market-competitive products by continuous
improving production technology through investmenting the state-of-the-art equipments,
factory facilities and Infomation technologies.

Core
About solid state diﬀusion bondingDiﬀusion bonding is a method of directly joining base materials to be joined, and is
diﬀerent from welding or brazing.
It is a method of bonding by heating and pressurizing the base material to promote
the movement of atoms at the bonding interface.
By joining materials in a solid state without melting them, it is possible to create
complex hollow 3D structures.
Laminated joining of thin plates is possible

Bonding force comparable to that of the base material can be obtainedComplex hollow parts can be manufactured

Precise bonding with small deformation is possible
Diﬀerent materials can be bonded

The process of solid-phase diﬀusion bonding has made it possible to fabricate ﬂuidic devices with microchannel structures and devices with complex
micro three-dimensional structures.

Our raison d'être and involvement with diﬀusion bonding

Industrial Applications of Diﬀusion BondingDiﬀusion bonding, a process technology developed in the late 1950s, waslimited to applications in the nuclear, aerospace, and military ﬁelds.
WELCON has been working to make diﬀusion bonding technology suitable formass production since before the company was founded in 2006. Emphasizing
the principles, we have tried to conﬁrm the process on actual machines as muchas possible, rather than just using literature or calculation results. One of ourstrengths, "thermal one-stop," would not be possible without the accumulationof "examination and veriﬁcation" from material analysis of joined products tomass production, inspection, and quality assurance. By continuing to accumulate this experience, we hope to further strengthen our strengths andmeet the various challenges of a wide range of customers.
The following are some examples of ﬁelds in which our products and systems have been applied.

Aerospace

Automotive

Printing machines

Medical and inspection equipment

Chemical plants
Fuel cells

Electronic devices

Semiconductor Manufacturing Equipment

Information and Communication / Antenna

We also have experience in other ﬁelds.

Molds

Hydrogen stations
Data servers

Laser and LED cooling

Food related equipment

For more information
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