Technology development
Technology development
Technology development
With refractory metals, even an identical drawing calls for the machining method to be set again according to the geometry and the application. That method, built up through making research parts and special parts, is Korea Tungsten's technology.
With refractory metals, even an identical drawing calls for the machining method to be set again according to the geometry and the application. That method, built up through making research parts and special parts, is Korea Tungsten's technology.
With refractory metals, even an identical drawing calls for the machining method to be set again according to the geometry and the application. That method, built up through making research parts and special parts, is Korea Tungsten's technology.
OVERVIEW
Tungsten and molybdenum have high melting points and break easily at room temperature. Even with the same drawing, tools and conditions have to be set again for each material and geometry, which makes deciding the machining method a development task in itself.
Tungsten and molybdenum have high melting points and break easily at room temperature. Even with the same drawing, tools and conditions have to be set again for each material and geometry, which makes deciding the machining method a development task in itself.
Tungsten and molybdenum have high melting points and break easily at room temperature. Even with the same drawing, tools and conditions have to be set again for each material and geometry, which makes deciding the machining method a development task in itself.
We take the customer's requirements and drawing, review the material, decide which processes to combine and how, then build a prototype. Conditions are revised as we review the results, and the method builds up through that cycle.
We take the customer's requirements and drawing, review the material, decide which processes to combine and how, then build a prototype. Conditions are revised as we review the results, and the method builds up through that cycle.
We take the customer's requirements and drawing, review the material, decide which processes to combine and how, then build a prototype. Conditions are revised as we review the results, and the method builds up through that cycle.
Three pillars of technical development
Korea Tungsten's technical development runs along three lines, but they are not separate. The methods gained in custom work are organized by the research center, and some of them end up as patents.
Korea Tungsten's technical development runs along three lines, but they are not separate. The methods gained in custom work are organized by the research center, and some of them end up as patents.
Korea Tungsten's technical development runs along three lines, but they are not separate. The methods gained in custom work are organized by the research center, and some of them end up as patents.
01
01
Custom development
Custom development
Custom development
From drawing to part
From drawing to part
From drawing to part
We review the drawings and samples customers send us and turn them into actual parts. Most of the company's work falls here.
We review the drawings and samples customers send us and turn them into actual parts. Most of the company's work falls here.
02
02
Research organization
Research organization
Research organization
Organizing the method
Organizing the method
Organizing the method
We gather and organize the material and process knowledge gained through machining, and test new methods.
We gather and organize the material and process knowledge gained through machining, and test new methods.
03
03
Technical assets
Technical assets
Technical assets
Patents and know-how
Patents and know-how
Patents and know-how
Some of what we organize ends up as patents, and the rest carries on as process know-how.
Some of what we organize ends up as patents, and the rest carries on as process know-how.
※ The three sections below set out what each pillar actually involves.
※ The three sections below set out what each pillar actually involves.
※ The three sections below set out what each pillar actually involves.
What we do most
Made to drawing or sample
Most of what Korea Tungsten machines is made to order. Send us a drawing or a sample and we will review whether and how we can machine it, then reply.
Most of what Korea Tungsten machines is made to order. Send us a drawing or a sample and we will review whether and how we can machine it, then reply.
Most of what Korea Tungsten machines is made to order. Send us a drawing or a sample and we will review whether and how we can machine it, then reply.
Made to drawing
Made to drawing
Research and test parts
Research and test parts
Prototype machining
Prototype machining
Custom work in tungsten and molybdenum
Custom work in tungsten and molybdenum
Research parts
A tungsten part small enough to sit on a fingertip
A tungsten part small enough to sit on a fingertip
A tungsten part small enough to sit on a fingertip
Machined parts
A finished tungsten boat
A finished tungsten boat
A finished tungsten boat
See custom work from drawings and samples in detail
See custom work from drawings and samples in detail
See custom work from drawings and samples in detail
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What we make it from
Development facilities
These are the main facilities used for technical development and prototyping. Taking a drawing, machining, bonding, heat treating and checking dimensions all happen in house.
These are the main facilities used for technical development and prototyping. Taking a drawing, machining, bonding, heat treating and checking dimensions all happen in house.
These are the main facilities used for technical development and prototyping. Taking a drawing, machining, bonding, heat treating and checking dimensions all happen in house.
Wire EDM machine
Wire EDM machine
Wire EDM machine
Laser welder
Laser welder
Laser welder
CNC machining center
CNC machining center
CNC machining center
CNC horizontal turning center
CNC horizontal turning center
CNC horizontal turning center
Vacuum heat treatment furnace
Vacuum heat treatment furnace
Vacuum heat treatment furnace
Advanced multi-sensor measuring system
Advanced multi-sensor measuring system
Advanced multi-sensor measuring system
Wire EDM machine (FANUC)
Wire EDM machine (FANUC)
Wire EDM machine (FANUC)
Super drill (small-hole EDM)
Super drill (small-hole EDM)
Super drill (small-hole EDM)
Induction heater
Induction heater
Induction heater
Drying oven
Drying oven
Drying oven
Ultrasonic cleaner
Ultrasonic cleaner
Ultrasonic cleaner
Pneumatic press jig
Pneumatic press jig
Pneumatic press jig
Universal testing machine
Universal testing machine
Universal testing machine
Resistance meter (HIOKI)
Resistance meter (HIOKI)
Resistance meter (HIOKI)
Precision optical microscope
Precision optical microscope
Precision optical microscope
Precision general-purpose lathe
Precision general-purpose lathe
Precision general-purpose lathe
Multi-axis precision milling machine
Multi-axis precision milling machine
Multi-axis precision milling machine
※ The full equipment list is available on the specialty page.
※ The full equipment list is available on the specialty page.
※ The full equipment list is available on the specialty page.
A representative development case
Chrome copper · tungsten composite electrode
A resistance welding electrode: a high-purity tungsten tip, chosen for high-temperature strength and wear resistance, bonded to the end of a chrome-copper body with good electrical conductivity and heat dissipation. The job was to make two metals with completely different properties into one part.
A resistance welding electrode: a high-purity tungsten tip, chosen for high-temperature strength and wear resistance, bonded to the end of a chrome-copper body with good electrical conductivity and heat dissipation. The job was to make two metals with completely different properties into one part.
A resistance welding electrode: a high-purity tungsten tip, chosen for high-temperature strength and wear resistance, bonded to the end of a chrome-copper body with good electrical conductivity and heat dissipation. The job was to make two metals with completely different properties into one part.
※ A composite resistance welding electrode machined in July 2026. For bonded dissimilar-metal parts of the same kind, send us a drawing and we will review it and reply.
※ A composite resistance welding electrode machined in July 2026. For bonded dissimilar-metal parts of the same kind, send us a drawing and we will review it and reply.
※ A composite resistance welding electrode machined in July 2026. For bonded dissimilar-metal parts of the same kind, send us a drawing and we will review it and reply.
A tungsten tip bonded to the end of a chrome-copper body, machined through to the tip
A tungsten tip bonded to the end of a chrome-copper body, machined through to the tip
A tungsten tip bonded to the end of a chrome-copper body, machined through to the tip
The record of this case
01
01
Technical challenge
Technical challenge
Technical challenge
The first challenge was bonding chrome copper and tungsten — two metals with completely different physical properties — without any gap. After bonding, the long, slender tip had to be machined to fine dimensions with the center axis still true.
The first challenge was bonding chrome copper and tungsten — two metals with completely different physical properties — without any gap. After bonding, the long, slender tip had to be machined to fine dimensions with the center axis still true.
The first challenge was bonding chrome copper and tungsten — two metals with completely different physical properties — without any gap. After bonding, the long, slender tip had to be machined to fine dimensions with the center axis still true.
02
02
Machining steps
Machining steps
Machining steps
We ran the bonding process, then combined turning and step machining, then fine machining of the tip. The work called for both hard-metal machining know-how and the ability to design a combined process.
We ran the bonding process, then combined turning and step machining, then fine machining of the tip. The work called for both hard-metal machining know-how and the ability to design a combined process.
We ran the bonding process, then combined turning and step machining, then fine machining of the tip. The work called for both hard-metal machining know-how and the ability to design a combined process.
03
03
Result
Result
Result
We achieved a defect-free bond and a tip that meets the drawing specification. The clean step profile and the precise tip groove translate into current focusing efficiency and part life in high-temperature resistance welding.
We achieved a defect-free bond and a tip that meets the drawing specification. The clean step profile and the precise tip groove translate into current focusing efficiency and part life in high-temperature resistance welding.
We achieved a defect-free bond and a tip that meets the drawing specification. The clean step profile and the precise tip groove translate into current focusing efficiency and part life in high-temperature resistance welding.
Where the method is organized
Where the method is organized
In-house R&D center
In-house R&D center
An organization that organizes the technology built up over a long time working with tungsten and molybdenum alone, and tests new machining methods. It rests on the manufacturing experience brought together through the merger of Korea Tungsten, Hanil Tungsten and Daesung Filament.
An organization that organizes the technology built up over a long time working with tungsten and molybdenum alone, and tests new machining methods. It rests on the manufacturing experience brought together through the merger of Korea Tungsten, Hanil Tungsten and Daesung Filament.
An organization that organizes the technology built up over a long time working with tungsten and molybdenum alone, and tests new machining methods. It rests on the manufacturing experience brought together through the merger of Korea Tungsten, Hanil Tungsten and Daesung Filament.
See the corporate research institute in detail
See the corporate research institute in detail
See the corporate research institute in detail
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What remains
Patents held
Some of the production methods found over long years of machining have been registered as patents. Please ask if you need copies of the patents.
Some of the production methods found over long years of machining have been registered as patents. Please ask if you need copies of the patents.
Some of the production methods found over long years of machining have been registered as patents. Please ask if you need copies of the patents.
See our patents in detail
See our patents in detail
See our patents in detail
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Download copies of the patent certificates
Download copies of the patent certificates
01
01
Tungsten cleaning
Tungsten cleaning
Tungsten cleaning
Filed and registered in 2003. On high-purity tungsten, any residue left on the surface turns directly into a process defect, so cleaning is as important a process as machining.
Filed and registered in 2003. On high-purity tungsten, any residue left on the surface turns directly into a process defect, so cleaning is as important a process as machining.
Filed and registered in 2003. On high-purity tungsten, any residue left on the surface turns directly into a process defect, so cleaning is as important a process as machining.
02
02
Tungsten plated wire production
Tungsten plated wire production
Tungsten plated wire production
A patent on a method of producing plated wire.
A patent on a method of producing plated wire.
A patent on a method of producing plated wire.
03
03
Discharge pin production
Discharge pin production
Discharge pin production
A patent on a method of producing discharge pins. The photo at the top of this page shows tungsten discharge pins aligned in a jig.
A patent on a method of producing discharge pins. The photo at the top of this page shows tungsten discharge pins aligned in a jig.
A patent on a method of producing discharge pins. The photo at the top of this page shows tungsten discharge pins aligned in a jig.
What this page covers
Sub-categories
01
01
Made to drawing or sample
Made to drawing or sample
Made to drawing or sample
Send us a drawing or a sample and we will confirm whether we can machine it and reply.
Send us a drawing or a sample and we will confirm whether we can machine it and reply.
Send us a drawing or a sample and we will confirm whether we can machine it and reply.
View details
View details
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02
02
In-house R&D center
In-house R&D center
In-house R&D center
A research organization accredited by the Korea Industrial Technology Association.
A research organization accredited by the Korea Industrial Technology Association.
A research organization accredited by the Korea Industrial Technology Association.
View details
View details
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03
03
Patents held
Patents held
Patents held
Patents on tungsten cleaning and on the production of plated wire and discharge pins.
Patents on tungsten cleaning and on the production of plated wire and discharge pins.
Patents on tungsten cleaning and on the production of plated wire and discharge pins.
View details
View details
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Advanced material supply and machining,
a global material leader
From raw material to finished part, the best solution seen from your side.
Weekdays 9:00 AM – 5:30 PM (alternate Fridays until 4:00 PM; closed weekends and public holidays)
Advanced material supply and machining,
a global material leader
From raw material to finished part, the best solution seen from your side.
Weekdays 9:00 AM – 5:30 PM (alternate Fridays until 4:00 PM; closed weekends and public holidays)
KOREA TUNGSTEN CO.,LTD
KOREA TUNGSTEN CO.,LTD
Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.
INNOMT LLC
INNOMT CO.,LTD
Korea Tungsten's official overseas division
Key industries served
Customer support
© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri) +82-31-975-1717
© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239
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KOREA TUNGSTEN CO.,LTD
KOREA TUNGSTEN CO.,LTD
Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.
INNOMT LLC
INNOMT CO.,LTD
Korea Tungsten's official overseas division
Key industries served
Customer support
© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri) +82-31-975-1717
© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239
Privacy Policy
Terms of Use
Cookie settings
KOREA TUNGSTEN CO.,LTD
KOREA TUNGSTEN CO.,LTD
Refractory metal supply and ultra-precision machining — core materials for semiconductor, display, defense, space, medical & radiation.
INNOMT LLC
INNOMT CO.,LTD
Korea Tungsten's official overseas division
Key industries served
Customer support
© 2026 Korea Tungsten Co., Ltd. All rights reserved. 83 Bideukbawi-gil, Jori-eup, Paju-si, Gyeonggi-do 10949, Korea (364-2 Osan-ri) +82-31-975-1717
© 2026 INNOMT Co., Ltd. All rights reserved. Unit A-1710, IS Biz Tower Hangang 3, 50 Eutteum-ro, Deogyang-gu, Goyang-si, Gyeonggi-do 10543, Korea +82-2-6408-4239
Privacy Policy
Terms of Use
Cookie settings