MANUFACTURING TECHNOLOGY of BIMETALLIC CASTINGS BY HIGH DURABILITY - PowerPoint PPT Presentation

MANUFACTURING TECHNOLOGY of BIMETALLIC CASTINGS BY HIGH DURABILITY Innovations Market for R&D April 16 – 20, 2007 Hannover Y. Aftandilyants Tel.: 380662246796 E-mail: aftyev@hotmail.com Physico – Technological Institute of Metals and Alloys of National Academy Science Ukraine Kiev 1

PRESENTATION OVERVIEW INTRODUCTION STATE OF BIMETALLIC TECHNOLOGY ACHIEVEMENT OF THE BIMETALLIC TECHNOLOGY IMPROVEMENT OF THE BIMETALLIC TECHNOLOGY CONCLUSION 2

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. 3

CLASSIFICATION OF METHODS OF BIMETALLIC CASTINGS PRODUCTION 4

POURING LIQUID METAL UPON SOLID BILLET 5

CONSECUTIVE POURING OF LIQUID ALLOYS INTO MOLD 6

POURING LIQUID METAL UPON SOLID BILLET 7 Bimetallic castings of parts of agricultural machines and grinding-milling equipments.

CONSECUTIVE POURING OF LIQUID ALLOYS INTO MOLD HAMMERS AND BEATERS (WEIGHT 1,5-75KG) FOR CRUSHERS 8

MATHEMATICAL SIMULATION OF KINETIC OF BIMETALLIC CASTINGS SOLIDIFICATION Ò q 2 Np  ( Ò , õ , ó ), c( Ò , õ , ó ),  ( Ò , õ , ó ) q 1 q 3 õ 0 q 4 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  Ò              Ò Ò Ò                 c ýô q q q q c ýô             2 4 1 3   x x y y 9

KINETICS OF SOLIDIFICATION OF ROLLS Temperature of contact surface Pouring time Distance from working layer, mm Time, s Base Temperature, î Ñ Contact surface Working Base Working layer layer Distance from working layer, mm Time, s 10

DEVELOPMENT OF STRESS IN BIMETALLIC BEATER Compression stress, kg/mm 2 Tension stress, kg/mm 2 70 mm 80 mm 90 mm 760 770 780 790 800 810 820 Temperature Temperature field 860

TARGETED MARKET SEGMENT • Cement industry; • Grinding industry; • Milling industry; • Mine industry; • Glass industry. 12

CONCLUSION Competitive Matrix “ Steel “ New Important Our Technologies ” product product casting company ” characteristics (Ukraine) (Russia) Wear resistance 2,5 - 6,0 1,0 - Application of 0,5 - 0,6 1,0 1,0 high-alloyed materials 6 – 8 Time between of 1,0 - restoration Cost 0,5 1,0 1,0 13

Contact information Y. Aftandilyants Tel.: 380662246796 E-mail: aftyev@hotmail.com Physico – Technological Institute of Metals and Alloys of National Academy Science Ukraine Kiev 14