Effect of Compaction Load and Heat Treatment in Manufacturing of HSS Cutting Inserts under Nitrogen-Based Atmosphere

Abstract:

High speed steels (HSS) is used in manufacturing of cutting tools and wear components because of its superior mechanical properties and wear resistance. In this study, the optimization manufacturing parameters such as compacting pressure and heat treatment temperatures will be studied. The powder of HSS and iron phosphorous were dryly mixed for 30 minutes. The mixed powders were compacted at the pressure in the range of 300- 632 MPa, sintered in the temperature range of 1100 - 1225 °C, annealed in the temperature range of 1100 - 1175 °C and tempered in the temperature range of 500 - 600 °C. The mechanical properties of the samples are analyzed using Vicker’s microhardness tester, universal tensile machine and the microstructures of the sintered sample were observed using field emission scanning electron microscope. Test results revealed that the optimum manufacturing parameters are as follows; (i) compacting pressure of 632 MPa, (ii) sintering temperature of 1200°C, (iii) annealing temperature of 1175 °C, (iv) tempering temperature of 500 °C.

• Periodical: Advanced Materials Research (Volume 686)
• Pages: 313-319
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.686.313
• Online since: April 2013
• Authors: R.J. Talib, Ahmad Aswad Mahaidin, Samsiah Abdul Manaf, Fazira Suriani Mohamed Fadzil, Mohd Asri Selamat
• Keywords: Hardness, Heat Treatment, HSS Tool Insert, Powder metallurgy, Sintering

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