Trend of Titanium PartsTrend of Titanium PartsTrend of Titanium Parts Trend of Titanium Parts forfor MotorcyclesMotorcyclesfor for MotorcyclesMotorcycles

K TakahashiK.Takahashi

Contents

1. Introduction

2 Development of titanium parts2. Development of titanium partsfor motorcycles

3. Trend of titanium parts for the future

4. Conclusion

Motorcycle Market Size

14 0 0 71.0 1.8

12.0

NA

14.0

JPN

0.7

EURO

0.9CHNCHNSA

ASIAUNIT: million2004yeary

Materials of Sports modelsMaterials of Sports models

Others

TitaniumTitaniumOthers

F

Mg

Steel

Al

Fe

Al

~150kg~150kg

Benefits of Weight ReductionBenefits of Weight Reduction

1. Improvement in fuel – efficiency

2. Improvement in engine performance

3. Reduction in toxic emissions

Contents

1. Introduction

2 Development of titanium parts2. Development of titanium partsfor motorcycles

3. Trend of titanium parts for the future

4. Conclusion

De elopment of Processed MaterialDevelopment of Processed Material

19871987 Utilization of RecycledUtilization of RecycledTitanium scrapTitanium scrap

・・Established a new grade forEstablished a new grade for・・Established a new grade forEstablished a new grade formotorcyclesmotorcycles

(relaxing various restrictions)(relaxing various restrictions)(relaxing various restrictions)(relaxing various restrictions)

Recycling Titanium Scrap

Sponge Ti Scrap Sponge Ti

Scrap recycling process Conventional process

Parent alloyParent alloy

C f i

Sponge Ti Scrap Sponge Ti Parent alloyParent alloy

Compact formingMeltingin PPCF Electrode forming

VAR 1

in PPCF(Plasma Progressive

Casting Furnace)

gby welding

VARVAR 1

VAR 2

Ingot

Chemical composition

Element C Al V Fe O N H Ti

Ti64A 0.2 5.5～6.75

3.5～4.6 0.4 0.21 0.05 0.015 bal.

Ti64 0 1 5.5～ 3.5～ 0 3 0 20 0 05 0 0125 b lTi64 0.1 6.75 4.6 0.3 0.20 0.05 0.0125 bal.

M h i l Ch

Mechanical Property

Mechanical Property TS(MPa) 0.2%PS

(MPa) EL(%) RA(%)Charpy Value

(J/cm2)

Ti64A/Ti64 896 827 10 25 491

Example of Application

Connecting rodWt:235g/pc

OD (Oxygen Diffusion) Treatment( yg )

800 20um

600

800 ～20um

Hardened layer400H

V

Hardened layer

0

200

00 20 40 60 80Distance from surface

(um)

Seizure TestConditionDisk speed : 5.4m/sOil : Engine oil(10W-30)

(MPa

)

Ti-64A(OD PTFE C ti )

SCM420(carburizing)10

ssur

e ( (OD+PTFE Coating)

The time interval between oil supply stop and seizure

Pres

Ti-64A(non treatment)

5

Ti-64A(OD)

Time (sec.)10 102 103

VFR750RVFR750R

Development of Raw Materialp

19871987 Use of scrap Ti enabledUse of scrap Ti enabled19871987 Use of scrap Ti enabledUse of scrap Ti enabledEstablished grade for automobilesEstablished grade for automobiles(various restrictions relaxed)(various restrictions relaxed)(various restrictions relaxed)(various restrictions relaxed)

20022002 Utilization of offUtilization of off--grade spongegrade spongeControl of maximumControl of maximumControl of maximumControl of maximumallowable impuritiesallowable impurities

Utilization of OffUtilization of Off--Grade SpongeGrade Sponge

Wrought ProductsMIL SPEC. gfor conventional use

Wrought Wrought ProductsProducts

NEW SPEC.

for motorcyclesfor motorcycles

【【Titanium SpongeTitanium Sponge】】Alloy for

steel productionOffOff--GradeGrade

( t%)

Chemical composition

H O N Fe

(wt%)

H O N Fe

0.013 0.520.10 0.020HTPR(Honda Titanium

JIS 0 013 0 25

max max

0 0500 20

max max(Honda TitaniumPlate Refine)

JISClass 2

0.013max

0.25max

0.050max

0.20max

Ti: Bal

Mechanical PropertyMechanical Property

TS (MPa) 0.2%PS(MPa) El (%)(MPa)

340～550 215～450 23HTPR

(Honda TitaniumPl t R fi )

340～510 215 23JISClass 2

Plate Refine)

Class 2

Example of Application

Exhaust systemExhaust system

CBR954RR

Contents

1. Introduction

2 Development of titanium parts2. Development of titanium partsfor motorcycles

3. Trend of titanium parts for the future

4. Conclusion

Positioning of Titanium materialsDi ti f l t

CP off grade materials

Direction of low costGeneral-purpose domain

Mass production domain

JIS class2

Corrosion resistance materialsExhaust pipe

JIS class1

JIS l 3Exhaust pipe

Muffler Pure titanium Ti64 off grade

materials

class3

ELITi 64

3Al 2.5V

Ti 6242S

Ti 64A

Special alloyCryogenic materials

Living Ti Z

Direction of high strength

Con-rodIN / EX valveTi 6242S

Ti 6246

Function

Living body materials

Ti - Zr- Ta - Nb

β alloy

High strength

Spring retainervalve lifter

Function domain

High strengthdomain

Contents

1. Introduction

2 Development of titanium parts2. Development of titanium partsfor motorcycles

3. Trend of titanium parts for the future

4. Conclusion

Conclusion

Ⅰ Reduction of material cost

Ⅱ I t i i f t t

Ⅰ Reduction of material cost

Ⅱ Improvement in infrastructure for processing

Ⅲ Shortening of materialⅢ Shortening of material lead-time

Thank you very much