1. UNIVERSITI TEKNIKAL MALAYSIA MELAKA (UTeM) FACULTY OF MANUFACTURING ENGINEERING PROPOSAL PROJECT 1 NAME : MUDA BIN IBRAHIM MATRIC NO : M050920043 I/C : 770607115113

2. TITTLE The Impact Of Cooling Media And Hardening Temperature On The Physical Properties Of The Materials.

3. ABSTRACT The project is carried out to investigate the effect of cooling media (medium) and changes in hardening temperature (quenching) on AISI D2 tool steel. Assessment to be made ​​in this study was to detect and see the forms to determine the microstructure and hardness of the best.

4. INTRODUCTION The various types of heat-treatment processes (heating and cooling of metals) The usual methods of heat-treating ferrous metals are annealing, normalizing, hardening, and tempering. Successful heat treatment requires close control over all factors affecting the heating and cooling of a metal (proper equipment is available).

5. OBJECTIVES OF STUDY To study the effect of cooling media in the heat treatment process. To study the influence of hardening temperature on the material hardness in heat treatment process. To study the quench media characteristics in accordance with the distribution of cooling rates in a particular work piece. To study the influence of cooling time on the material hardness in heat treatment process.

6. SCOPE OF THE STUDY Specimens are AISI D2 tool steel with a diameter of 30 mm and 50 mm length. Specimens will be carburized by using an electric furnace. The quenching temperatures use are 1000, 1020 and 1040 °C. The specimens were cooled in different cooling media such as tap water, brine (salt bath), ice and SAE 40 engine oil.

8. Characterized : High wear resistance, high compressive strength, good through-hardening properties, high stability in hardening, and good resistance to tempering-back. (McClaflin and Fatemi , 2004).

10. LITERATURE REVIEW 3) Scott (1941) and Haberling (1981), stated that once the austenite is formed, the alloying elements and carbon partition themselves between the austenite and the carbides according to the requirements of equilibrium at a given temperature. As the carbides dissolve, the austenite becomes rich in carbon and alloying element content at AISI D2 tool steel.

12. After hardening, relation between hardness, microstructure, and impact toughness.

13. The samples (1 in x 1 in x 1 in), refer table 1.

14. Abrasive paper to 600 grit.

17. First, quenching from medium temperatures (1080-1100°C) followed by tempering at about 550 °C confers a high hot (Rockwell C) hardness (62 HRC).

19. Cooling in a nitrogen flow at 5 bar and results of quenching treatments are summarized in table 2 (austenitization time 17 min). Table 2: Results of quenching experiments (Tiziani, 1985).

21. Polymer quenchant though can provide severity between those of water and oil has the problem of varying concentration during the quenching process and it is also more expensive.

24. Conclusions Experimenter's first goal to understand the process and used to study effects of parameters as they are set at various level. Methods of experimentation using the one-factor-at-a time (OFAT).

25. PROJECT SCHEDULE

26. REFERENCES Engineering Steel, Cold Work Tool Steel-AISI D2, TATA STEEL, www.tatasteelnz.com. E. Ameen , "Dimensional Changes of tool steels During Quenching and Tempering," Trans ASM ,28 (1940), P 472. G. M. Butler, "Study of Dimensional and Other Changes in Various Die Steels Due to Heat Treatment," Trans ASM, 30 (1942), P 191. H. Scott, and T. H. Gray, "Dimensional Changes on Hardening High-Chromium Tool Steels," Trans ASM, 29 (1941), P503. Haberling, T. E. W. Tech Berich, (1981), 7, 161.

27. N. Yamanaka, and K. Kusaka, 'Influence of Vanadium and Molybdenum on the properties of Air-Hardening Die steel Containing 1.5% carbon and 12% chromium," Testu-to-Hagane, 41 (1955), p 673. A. (Ayooq ) Arain, Heat Treatment and Toughness Behaviour of Tool Steels (D2 and H13) for Cutting Blades, National Library of Canada, 395 Wellington Street Ottawa ON KIA ON 4, Canada, (1999). G. A. Roberts, J. C. Hamaker and A. R. Johnson, Tool Steel, American Society for Metals, Metals Park, OH, 1962. A. Tiziani, A. Molinari, L. Fedrizzi and A. Zambon, 4th Int. Congr. on Heat Treatment of Materials, Berlin, 1985. M.M. Mahasneh, S.M.A. Al-Qawabah and U.F. Al-Qawabeha, Experimental and FEM Investigation of Heat Treatment on the Torsional Aspects of D2 Alloy Steel Research Journal of Applied Sciences, Engineering and Technology (2010), 2(6): 552-557.

28. D. Dasa, A.K. Duttab, K.K. Rayc, Influence of varied cryotreatment on the wear behavior of AISI D2 steel, ScienceDirect , Wear 266 (2009) 297–309. Product Manual, ENCORE METALS, 7470 Vantage Way Tilbury Industrial Park Delta, British Columbia. debrabrunner@encoremetals.com. S. B. Hassan, Hardening Characteristics of Plain Carbon Steel Using Fatty- based oils as quenchants, NSE, Technical Transactions, 38, (2003) 19-29. Material Safety Data Sheet, Castrol Product name Magnatec 10W-40, BP Oil New Zealand Limited , 20 Customs House Quay Wellington 1, New Zealand. http://www.nabertherm.de/ , Electrical furnace (nabertherm) George F. Vander Voort, Metallography Principles And Practice, McGraw-Hill Series in Materials Science and Engineering. (1999). Edition Machinery Handbook, copyrighted and published in 2000 by Industrial Press, Inc. of New York.

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