FT-9 Braking Pinch Rolls from Project Sales Corp

Powder Metallurgy Alloy Steel ( FT-9, FT-10, FT-23)

Powder Metallurgy Alloy Steel ( FT-9, FT-10, FT-23)

www.millroll.comDaewha Alloytech Co.,Ltd.

INTRODUCTION

HIP (Hip Isostatic Pressing)

Powder Metallurgy Process

Chemical Composition & Mechanical Properties

Mechanical Properties Comparison

Characteristics & Strengths

Assembly Process

Cooling Condition

ContentsContents


Introduction Introduction

FT-9, FT-10, and FT-23 is Powder Metallurgy Alloy Steel made by the Daewha Alloytech Powder Metallurgy Process (Canning HIP). They provide superior wear resistance while maintaining toughness and fabrication characteristics comparable to Rolling Steel such as D2, M2.

Mill rolls, Pinch rolls, Guider rollers, Table roller for Cold/Hot Rolling is superior to general Rolling and Casting steels in improving wear-resistance for above products. Presently, It is widely used in domestic and overseas markets.

Rolling HSS(SKH-51) FT-9

FT-9 : SVCR-9(USA, Sintermet), CPM-9V(USA, Crucible)

FT-10 : CPM-10V(USA, Crucible)

FT-23 : ASP-23(France, Erasteel)

Overseas Overseas

similar materialsimilar material

Structure Structure Comparison of Comparison of Carbide PicturesCarbide Pictures


HIP (Hot Isostatic Pressing) HIP (Hot Isostatic Pressing)

Kobe Steel Maker

Press Proper Type Press frame type Multiple steel plate yoke type

Maximum working pressure 118 MPa (17,115 Psi)

Loading style Bottom loading

Furnace Type Graphite, three zone

Maximum working Temperature 1500℃

Process gas Argon

Furnace size Φ600mm × 1,300mm

Product / Product basket (Crucible) size Φ550mm × 1,300mm

Hot Isostatic Pressing is a method by which a workpiece is processed under the simultaneous application of high-pressure gas and high- temperature.HIP can solve many technical problems which were impossible to solveby conventional processes.

HIP (Hot HIP (Hot IsostaticIsostatic Pressing)Pressing)

SpecificationSpecification


Powder Metallurgy ProcessPowder Metallurgy Process

The shapes of materials by Canning HIPThe shapes of materials by Canning HIP

Powder Metallurgy Powder Metallurgy ProcessProcess

Atomization Canning, Degassing HIP Powder MetallurgyAlloy Steel

Single Square Material Single Rods MaterialPowder Metal + Steel Bonding

Single Ring Material


Chemical composition & Mechanical propertiesChemical composition & Mechanical properties

Chemical Chemical Composition(wtComposition(wt%)%)

Materials C Cr Mo V W Fe

FT-9 1.85 5.25 1.30 9.00 - Bal

FT-10 2.45 5.30 1.30 9.50 - Bal

FT-23 1.30 4.20 5.00 3.10 6.30 Bal

Physical / Mechanical PropertiesPhysical / Mechanical Properties

Classification FT-9 FT-10 FT-23

Density (g/cm3) 7.45 7.45 8.00

Hardness(HrC)Annealed 25~29 25~29 20~24

Hardened 54~58 60~64 60~66

Transverse Rupture Strength (Kg/mm2) 600~620 610~630 570~600

Modulus of Elasticity (GPa) 221 221 207

Tensile Strength (Kg/mm2) 95~110 95~110


Wear-Resistance & Toughness ComparisonWear-Resistance & Toughness Comparison


⊙ Wire rod Mills in Intermediate stands, Mill rolls in Finishing stands

Round Bar/Re-Bar/other Bar Mills in Intermediate stands, Mill rolls in Finishing stands

Being used to Oval, Round, Angle, Profile, Slit, Dog bone, etc.

⊙ Ring-Type Mill roll, Kocks Roll, Pinch Roller, Sizing Roller, Guide Roller,

and Rollers for transmission

⊙ Material: Square, Round Bar, Rod

Applications Applications


Applications Applications

⊙ Composite Roll-Assemble Method : Hydraulic Method (1800~2300Bar) +

Mechanical Method (Key, Lock Nut)-Roll Ring : FT-9, FT-10, FT-23 (Powder Metallurgy Steel)

Tungsten Carbide, RESISTAR ® (Casting HSS)FT-1(Titanium Carbide)

-Shaft : Forged SNCM, SCM, SUS (Optional)-Clamping System : SCM440

⊙ Braking Pinch Roll-FT-9 + Mild Steel

-Canning HIP

Powder metal

Mild Steel


⊙ Superior wear-resistance: 4~6times vs DCI, 2~3times vs HSS, 4~6times vs Tool Steel

⊙ Materials without porosity by HIP (Hot Isostatic Press)

⊙ Possible to produce (Mild steel+FT-9 or FT-10 or FT-23) and economical and easy for assembly.

Applicable to the part of use.

⊙ Minute compound Carbides are distributed equally.

Improvements to Toughness, Wear-resistance, Yield hardness, and Anti-corrosion.

⊙ Keeping Wear-resistance, Toughness, and Hardness up to 500℃, Minimize crack

⊙ Sintering manufacture with Alloyed Powder atomized: Protection for one side wear of rolls

and roll marking (Good shape of wear).

⊙ Similar Hardness to Casting HSS with almost same condition of Heat Treatment.

But Heat Treatment transform and low thermal expansion coefficient.

⊙ Excellent effect versus cost (Reduction effect of repair time and cost)

⊙ Easy reprocessing and remachining versus DCI and HSS. (Approx. more than 15%)

⊙ Lathe and CNC Machining with ceramic, CBN bite(0.5~2mm remachining)

Characteristics & StrengthsCharacteristics & Strengths


Fixing Shaft andinserting Spacer

Inserting Rings Rings inserting completedand inserting O-ring

Hydro ring, unit setupand tightening

Oil pressure supply(2,000 bar)

Fixing Shaft and Protection-Application key-Inserting

Heating for Shrink Fit of rings andPulling it out of the furnace

Ring Shrink Fit Rings cooling AndTightening with a Jig

Assembly ProcessAssembly Process


Powder Metallurgy Alloy Steel Ring

Pressure 3 ~ 5 bar

Quantity 20~25 m3 / h Stand

T.C Ring

Pressure 4 ~ 6 bar

Quantity 25~30 m3 / h Stand

bar:1000hPa

Cooling ConditionsCooling Conditions


TEL : 82-31 - 355 - 7347

FAX : 82-31 - 355 - 7352

Thanks for your attention

FT-9 Braking Pinch Rolls from Project Sales Corp

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Transcript of FT-9 Braking Pinch Rolls from Project Sales Corp