Optimal inductor design for surface hardening under conditions of interval uncertaity of process parameters

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Abstract

The paper is devoted to the optimal inductor design for surface hardening of steel cylindrical billets. The heating stage of surface induction hardening is considered as an object with distributed parameters, which unknowns are design characteristics of the induction installation. In real industrial conditions the main technological parameters are often defined by the intervals of their possible values. That is why, in the paper the optimal design problem under the conditions of interval uncertainty of initial billet’s temperature and thermal exchange coefficient is formulated. Solution of the formulated problem is carried out by alternance method of parametric optimization based on numerical model developed in Altair FLUX software.

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About the authors

Anton V. Popov

Samara State Technical University

Author for correspondence.
Email: antonsam93@mail.ru

Senior Lecturer

Russian Federation, 244, Molodogvardeyskaya str., Samara

References

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Supplementary files

Supplementary Files
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1. Fig. 1. Geometry of the induction system

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2. Fig. 2. Shapes of finite temperature distributions for the ultimate achievable heating accuracy

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3. Fig. 3. The shape of the curve of the resulting temperature distribution with heating accuracy

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4. Fig. 4. Temperature distribution along the spatial coordinate l at the end of the optimal heating accuracy in the presence of incomplete information about the characteristics of the object at

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5. Fig. 5. Numerical FLUX model of the heating system a - finite element mesh; b - temperature field along the length of the workpiece at the end of heating.jpg

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6. Fig. 6. Final temperature distribution along the boundary of the hardened layer with thickness

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7. Fig. 7. Temperature distributions in the optimal design problem

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