STEEL

Since our inception in 1955, OSAKA FUJI Corporation has built an outstanding performance record in the field of steel industry facility fabrication and repair. We have expanded our operations as Japanese major steelmakers have developed more-sophisticated steelwork facilities and refined their operating technologies. From the iron making process to the back-end processes such as hot- and cold-rolling, OSAKA FUJI Corporation processes a diverse range of components. The illustration below introduces representative examples.


EXAMPLE APPLICATIONS OF WELDING TECHNOLOGY

Sinter-pulverizing crusher

Processing of components from Sinter-pulverizing crusher.

Chocks and couplings

Processing of products used for roll bearings in steelworks.

CONTINUOUS CASTING FACILITY COMPONENTS

Processing of various components for continuous casting facilities in a steel making plant.

Pins and bushes for dummy bar units

Top zone rolls

R/A,P/R rolls

COMPONENTS FOR USE IN HOT-DIP BATHS (AL, ZN, AL-ZN )

Processing of a variety of equipment used in the plating process.

Sink roll

Sleeves

Bearing

HOT ROLLING MILL SIDE GUIDE ROLLER

Side guide rollers in a hot-rolling plant processed to increase wear resistance.

EXAMPLE APPLICATIONS OF THERMAL SPAYING TECHNOLOGY

Conveyor pulleys

Processing of components of belt conveyors for transporting iron ore and coke.

Coke ovens/Risers

Processing as a measure to stop wear caused by coke breeze.

EXAMPLE APPLICATIONS OF WELDING TECHNOLOGY IN THE STEEL FIELD (Excerpt)

Process Product Dimensions/Form Required Performance Welding Specifications
Iron making Vertical mill tire F1500 x 800L Abrasive wear resistance CrC alloy overlay
Iron making Blast furnace tuyere Pure copper Resistance to loss due to melting,thermal conductivity CrC alloy overlay PTA welding
Steel making T/Z T/Z CC roll F220 SCM 822 mod Corrosion resistance,heat resistance,wear resistance OFM-31W MAG welding
Steel making CC roll
R/A
P/R
F220(to F480) SCM 822 mod Corrosion resistance, heat resistance, wear resistance 13Cr-Ni overlay Submerged arc, MAG welding
Steel making Pins and bushes for dummy bar units Φ100 x 8L Abrasive wear resistance,
seize resistance
WC alloy overlays
PTA welding
Heavy steel
plates
Repair of roller’s cracks 4680 (W) x 3000 (H)
x 6625 (L),
SC42, Cast steel
electroslag-welded
structure
Groove tip →
Low-hydrogen welding rods Continuous,
large overlay sections →
Pulse MAG welding
Hot rolling Side guide roller Φ160 x 500L Φ200 x 645L, etc. S25C Wear resistance,
seize resistance
OFP-0512 (WC + others) PTA welding 
Hot rolling Table roll Φ200(to Φ500) x 4000L Wear resistance,
seize resistance
6Cr steel overlay
Submerged arc welding
Hot rolling Pinch roll, Wrapper roll Φ400 x 2000L Heat resistance,
wear resistance,
seize resistance,
bead-mark resistance
4Cr steel overlay
Submerged arc welding
Hot rolling Chocks and couplings 2000 x 2000,
Φ1200 x 1200L
Wear resistance Cr-Mo overlays
CO2 welding
Cold rolling Sink roll,
Snap roll sleeve
Φ150 x 200L Corrosion resistance,
wear resistance,
heat resistance
WC alloy overlays
PTA welding
Cold rolling Sink roll,
Snap roll bearing
Corrosion resistance,
wear resistance,
heat resistance
WC alloy overlays
PTA welding
Cold rolling Sink roll,
Snap roll
Φ600 x 2000L Corrosion resistance,
wear resistance,
heat resistance
WC alloy overlays
PTA welding
Pipe
manufacturing
Roller used in pipe heat-treatment furnace U roll SUS310 or
Ni-base alloy
Wear-resistance,
oxidation-resistance,
build-up
OFP-9516 overlays
PTA welding

EXAMPLE APPLICATIONS OF THERMAL SPRAYING TECHNOLOGY IN THE STEEL FIELD (Excerpt)

Process Product Dimensions/Form Required Performance Welding Specifications
Iron making Conveyor pulley Φ200(to Φ800) x 1000L(to 2000L) Wear resistance,
rust-proof
Ceramics
Iron making Coke oven/riser Φ450 x 500L Wear resistance,
corrosion resistance
Heat- and
corrosion-
resistant alloy
Iron making CDQ boiler tube Boiler tube Erosion resistance,
hot corrosion resistance
Self-fluxing
alloy/cermet
Hot rolling Pickled bridle roll Φ1500 x 1850L Wear resistance,
anti-slip,
corrosion resistance
Cermet
Hot rolling Loop car Support roll Φ165 x 1100L Wear resistance,
seize resistance
Self-fluxing
alloy/cermet
Hot rolling Bridle roll for hot-rolling skin-pass mill Φ1500 x 1850L Wear resistance,
anti-slip,
corrosion resistance,
resistance to iron powder adhesion
Cermet
Cold rolling Roll in zinc plating bath Φ200(to Φ660) x 1800L(to 2100L) Resistance to hot-dip zinc, resistance to dross adhesion Proprietary material +
proprietary sealer
Pipe manufacturing Extraction roller Φ400 x 375L
(drum-type body)
Build-up resistance,
wear resistance
Cermet
Cold rolling Backup roll Journal section Shape recovery,
wear resistance
13Cr steels/mild steels