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Cemented carbides brased typeHardfacing type

solidsput out

screw

shell

separatedwater

original liquidput in

Overhauls of industrial chemical machinery

Paper and Pulp mill

Chemical, plastic and rubber plant

▪Low pressure rotary feeder▪High pressure rotary feeder◦Overhaul.◦Manufacture or renewal of rotors by

rebuilding expertise.◦Casing renewal by repair welding.◦Production of inner sleeve,　Production from scratch is served.

▪Production and maintenance of centrifugal separator of DecanterIntensive welding and brazing technique is utilized for the separator. (photo, below)

Rotor Casing

Sludge before spin-dry

construction mud (0.1~100μm）

construction sluge (0.1~100μm）

Solids after spin-dry

A vertical centrifugal separator separates liquid from solid particles in rapid spinning shell and exhausts separated water and solids.Solids separated from construction sludge have lower water content ratio than 25% and both the water waste and solids are reusable. (photo, right)

High performance and high quality maintenance for plant equipment has been achievedwith our practical welding skill and neis development capabilities of welding materials.

After two years of rebuilt overhaul, axial straightness of rotary feeder is still kept well.

A vertical decanter separator Dismantle

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Power plant and Coke industry

▪Diffuser-cone◦Diffuser-cone for heavy oil made of 50Cr-50Ni, 40Cr-30Ni

castings 310S castings.◦Diffuser-cone for coal and pitch coke made of Pure-

chromium overlaying.◦COG swirl vane fabrication.

▪Mill roller◦Repair by over-laying on various base metals.

Cast steel and iron・・・・SC, SCW, SF, FCD, etc.(JIS)Cr-rich cast iron & cast steel・・15Cr, 20Cr, 27Cr.◦Associated parts of roller mill.

Ring seal, table liner, outlet, wear protection sleeve and hoppers, through the processing of over-laying or ceramics thermal spraying.

▪Submerged welding and CO2 weldingTrade name ; Hard GC950 HN-7 (see, Page 10)

▪Hard facing the base of mill rollerTrade name : Hard GC950HN-7

◦Replacing tubes.◦Fabricated by welding / brazing structure.

▪Heat exchangers▪Extrusion screws hardfaced

《Overhaul process》Dismantle

Shipment

Check particles and liquid Choose hardfacing materials

OverlayTrial run Assembling

Measurement of vibration and temperature

Components balancing,hubs, bowlshell and gearbox.

Lathe &Grinding

Cleaning & Checkworn parts