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Welding IND. Co.

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  Research & Development

Hardfacing welding apparatus of rolls

Based on the following patented technologies, it is aimed to improve defect prevention, quality and productivity by realizing hardfacing welding thickness and movement of welding beads through precise control when performing hardfacing welding works of various rolls used in steel manufacturing facilities.

Patents : Hardfacing welding apparatus capable of buffering thermal expansion
(No. 10-1671420) Google Patent Link
Jig device for roll hardfacing welding
(No. 10-1642674) Google Patent Link
Welding flux recovery and supply device
(No. 10-1770542) Google Patent Link
Roll hardfacing welding apparatus
(No. 10-1772359) Google Patent Link

No. 10-1671420

R&D Hardfacing

Hardfacing Welding System

Selective recovery of iron fractions by movable flux recovery apparatus

Based on the following patented technology, it is aimed to recover unused welding flux after submerged arc welding and remove iron dust for reusing welding flux.

Patent : Movable welding flux recovery device
(No. 10-1604665) Google Patent Link

No. 10-1604665

R&D Flux Recovery

Movable Flux Recovery

Automatic apparatus for supplying welding flux

Based on the following patented technology, it is aimed to realize automation of flux supply during SAW with long working time by eliminating the moisture in flux heat-insulating tanks located at the bottom of welding devices and supplying flux in good quality to the upper welding nozzles consistently and continuously. It was applied to SAW system of Doosan Heavy Industries & Construction Co., Ltd.

Patent : Apparatus for supplying welding flux
(No. 10-1799737) Google Patent Link

No. 10-1799737

R&D SAW Welding

SAW System

Apparatus keeping the speed of feeding wires constant for arc spraying

Based on the following patented technology, it is aimed to prevent arc instability and spray defects by keeping the speed of feeding wires constant in arc spraying operations. It was applied to spraying system(Zinc Spraying) of Korea Cast Iron Pipe Industry Co., Ltd.

Patent : Wire feeding device for arc spraying
(No. 10-1763555) Google Patent Link

No. 10-1763555

R&D Arc Spray

Wire Feeder

Automation device for POSCO CGL ROLL CDC

It is aimed to improve CDC quality and productivity with automatic operations of removing foreign substances on the surface of rolls and grinding them before CDC operation.

R&D Posco CGL Roll CDC

CGL Roll CDC

Device for separating iron and dust in welding flux

Based on the following patented technology, it is aimed to select and refine welding flux in high quality by separating iron and dust which exists in recovered flux after submerged arc welding, thereby making it possible to be reused. It was applied to flux selector of Doosan Heavy Industries & Construction Co., Ltd.

Patent: Device for separating iron and dust in welding flux
(No. 10-1925244) Google Patent Link

No. 10-1925244

R&D Flux Selector

Flux Selector

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