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Title
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Investigation of Enhancing Temper Resistance and Hot Hardness for Tool Steel
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Sub-Title |
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Subject |
Tools Steels, Heat treatment, Hot Harness, Thermal fatigue and forging
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Sub-Subject |
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Author |
MA Niaz , A Tariq, T Iqbal ,W Javaid
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Publish Year |
2019 |
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Supervisor |
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Diss#. |
- |
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Chapters |
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Pages |
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Text Language |
English |
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Accession |
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Library Section |
Research Article |
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Abstract |
Hot strength, temper resistance and low
thermal expansion are a few amongst many desirable
properties to ensure longer life for dies and punches in
AISI type H tool steels, during hot forging. A
compromise over hardness invariably reduces die and
punch life during thermal fatigue and same applies for
hardness on lower side. In this research work, optimum
level of hardness and heat treatment parameters (hot
strength, temper resistance, and thermal expansion for
hot work die steel) is investigated by varying heat
treatment variables for enhanced service life of dies and
punches. Moreover, three different heat treatment
techniques were adopted to attain an optimum level of
microstructure and surface hardness in hot forging
punches for hot-work tool steels. Considerable
improvements were observed in surface microhardness.
The choice of selected optimum parameters
shows clear signs of improved service life for H13 tool
steel during forging.
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