Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2002.05a
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- Pages.159-162
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- 2002
Hot Deformation Behavior of Bearing Steels and Their Optimal Hot Forging Conditions
베어링강의 고온변형특성과 열간 단조조건에 관한 연구
Abstract
In this paper the stress-strain curves of bearing steels at hot working conditions are obtained by compression test with a computer controlled servo-hydraulic Gleeble 3800 testing machine and elongations and reductions of area of the bearing steels are obtained by tensile test with a computer controlled servo-hydraulic Gleeble 1500 testing machine. These tests have been focused to obtain the flow stress data and optimal hot forging conditions under various conditions of strain rates and temperatures. The strain rate sensitivity exponent and reduction of area of the materials are evaluated. Experimental results are resented for various conditions of temperatures and strain rates.
Keywords
- Hot Deformation;
- Computer Controlled Servo Hydraulic Gleeble 3800 Testing machine;
- Bearing Steel;
- Stress-Strain Curves;
- Hot Forging