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  • Materials & Fracture · Solids & Structures · Dynamics & Control · Production & Design
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Characteristic of quenching refrigerant for heat treatment deformation control of SM45C steel

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Abstract

This study deals with the characteristic of quenching refrigerant for heat treatment deformation control of SM45C steel. Heat-treatment deformation must be controlled for the progress of production parts for landing gear. Most of deformation is occurred on inconsistent cooling. The inconsistent cooling is caused by a property of quenching refrigerant. When a heated metal is deposited in the quenching refrigerant, the cooling speed is so slow in early period of cooling because of a steam-curtain. After additional cooling, the steam-curtain is destroyed. In this progress, the cooling speed is very fast. The object of this study is to control the deformation of heat-treatment for landing gear by improving the conditions of quenching. The cooling curves and cooling rates of water, oil and polymer solution are obtained and illustrated. From the characteristics of the quenching refrigerant, the effects of heat-treatments on thermal deformation and fatigue strength are also investigated.

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References

  1. Beck, G., DUMONT. C., MOREAUX, F., and SIMON, A., 1975, “Guiding Principles in Choosing and Selection a Hardening Oil,”Haterei-Techn, Mitt., Vol. 30, No. 6, pp. 346–358.

  2. Kim H. and Im S., 1993, “Analysis of Beam Landing Shifts due to Thermal Deformation of Shadow Mask,”IEEE Transaction on Consumer Electronics, Vol. 40, No. 1, pp. 44–54.

  3. Lee S., 1993, New Metal Heat-Treatment,Wonchang, pp. 299–306.

  4. Lisic, B., 1978, “Assessing the Absolute Quenching Capacity During Hardening from the Surface Temperature Gradient,”Haterei-Techn, Mitt., Vol. 33, No. 4, pp. 179–191.

  5. Se-Jong etc., “A Study on the Microstructure and Hardness of Al−Si−Mg Alloys upon Heat Treatments,”J of the Korea Society for Heat Treatment, Vol. 13, No. 2, pp. 108–114.

  6. Song J. and Chung T., 1999, The Application of Geometric Tolerancing Techniques (using customary inch system),Sunandang, pp. 39–40.

  7. Song J. and Chung T., 1999, The Application of Geometric Tolerancing Techniques (using customary inch system),Sunandang, pp. 46–48.

  8. Ueyama T. etc., 1989, “Improved Computer simulation Method for Shadow Mask Thermal Deformation,” Japan Display 89, pp. 558–561.

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Author information

Correspondence to Sung-Ki Lyu.

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Lyu, S. Characteristic of quenching refrigerant for heat treatment deformation control of SM45C steel. KSME International Journal 16, 647–654 (2002). https://doi.org/10.1007/BF03184814

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Key Words

  • Heat-Treatment Deformation (Circularity, Straightness)
  • Quenching Refrigerant
  • Conditions of Quenching
  • Fatigue Strength