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 spraying 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 | Φ1500 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 |
Φ220 SCM 822 mod | Corrosion resistance, heat resistance, wear resistance |
OFM-31W MAG welding |
| Steel making | CC roll R/A P/R |
Φ220(to Φ480) 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 | Thermal Spraying 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 |
Frequently asked questions related to our markets(Steel).
- Do you process steelwork equipment components outside Japan?
- Do you have any detailed data about equipment repair services?
