manufacturing technology ofbimetallic castings by … · manufacturing technology ofbimetallic...

1

MANUFACTURING TECHNOLOGY of BIMETALLIC CASTINGS BY HIGH DURABILITY

Innovations Market for R&D April 16 � 20, 2007

Hannover

Y. AftandilyantsTel.: 380662246796

E-mail: aftyev@hotmail.comPhysico � Technological Institute of Metals and Alloys of

National Academy Science Ukraine Kiev

2

PRESENTATION OVERVIEW

INTRODUCTION

STATE OF BIMETALLIC TECHNOLOGY

ACHIEVEMENT OF THE BIMETALLIC TECHNOLOGY

IMPROVEMENT OF THE BIMETALLIC TECHNOLOGY

CONCLUSION

3

PROBLEM DESCRIPTION & MARKET NEED

THE POSSIBILITIES OF THE EXISTING MONOMETALLIC ALLOYS ARE PRACTICALLY EXHAUSTED.

THE PROBLEM CONNECTED WITH:

� INCREASE OF TECHNICAL RESOURCE OF MACHINE;

� REDUCTION OF CONSUMPTION OF HIGHLY-ALLOYED ALLOYS;

� INCREASE OF WEAR RESISTANCE OF MATERIALS.

4

CLASSIFICATION OF METHODS OF BIMETALLIC CASTINGS PRODUCTION

5

POURING LIQUID METAL UPON SOLID BILLET

CONSECUTIVE POURING OF LIQUID ALLOYS INTO MOLD

6

7

POURING LIQUID METAL UPON SOLID BILLET

Bimetallic castings of parts of agricultural machinesand grinding-milling equipments.

8

CONSECUTIVE POURING OF LIQUID ALLOYS INTO MOLD

HAMMERS AND BEATERS (WEIGHT 1,5-75KG) FOR CRUSHERS

9

MATHEMATICAL SIMULATION OF KINETIC OF BIMETALLIC CASTINGS SOLIDIFICATION

3142 qqqqÒ

cýô

õ

Np

0

q1 q3

Ò

q2

q4

(Ò, õ, ó), c(Ò, õ, ó), (Ò, õ, ó)

Fig.Two-dimensional nonstationary problem of heat exchange

Alteration of system heat content is determined by difference of incoming and outgoing heat flows in differential view it will be written

as Fourier equation

y

Òyx

Òx

Òcýô

10

Base

Working layer

Time, s

Temperature of contact surface

Distance from working layer, mm

KINETICS OF SOLIDIFICATION OF ROLLS

Contactsurface

Pouring time

Dis

tanc

e fr

om w

orki

ng la

yer,

mm

Tem

pera

ture

, îÑ

BaseWorking layer

Time, s

DEVELOPMENT OF STRESS IN BIMETALLIC BEATER

Tension stress, kg/mm2Compression stress, kg/mm2

760770

780790

800810

820

860

Temperature

Temperature field

90 mm80 mm70 mm

TARGETED MARKET SEGMENT

� Cement industry;

� Grinding industry;

� Milling industry;

� Mine industry;

� Glass industry.

12

13

Competitive Matrix

Important product

characteristics

Our product

�Steel casting

company�(Ukraine)

�New Technologies�

(Russia)

Wear resistance 2,5 - 6,0 1,0 -

Application of high-alloyed

materials

0,5 - 0,6 1,0 1,0

Time between of restoration

6 � 8 1,0 -

Cost 0,5 1,0 1,0

CONCLUSION

14

Contact information

Y. Aftandilyants

Tel.: 380662246796

E-mail: aftyev@hotmail.com

Physico � Technological Institute of Metals and Alloys of National Academy Science Ukraine

Kiev