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Design of a non-contacting single infrared sensor for high frequency dental casting machine

치과용 고주파 주조기를 위한 비접촉 단일 온도센서 설계

  • Hwang, In (School of Electronics and Computer Engineering, Chonnam National University) ;
  • Won, Yonggwan (School of Electronics and Computer Engineering, Chonnam National University) ;
  • Lee, Sang-Hun (Department of Electrical Engineering, Dong-Eui Institute of Technology) ;
  • Song, Sung-Geun (KETI, Energy Conversion Research Center)
  • Received : 2016.06.30
  • Accepted : 2016.07.06
  • Published : 2016.08.31

Abstract

In addition, because it uses preheating to dissolve an alloy in general, it is hard to regulate the appropriate melting temperature of the alloy and brewing time and shows the defect of the supplementation thing due to the super-heating. Once the alloy is molten and then most of the casting by attaching a sight glass or non-contact temperature sensor is suitable casting temperature the operator pressing a button to generate a centrifugal force to inject the molten alloy into a crucible in the casting ring. These results, and most of the cast temperature is too high or too low to generate a lot of casting defects do not get into a uniform cast body. In this paper, we developed a dental casting machine for high frequency using a single temperature sensor which can measure the actual temperature of the alloy than the temperature of the external non-contact measurement using a temperature sensor.

일반적으로 치과용 주조기는 불때를 이용하여 합금을 용해하기 때문에 합금의 적절한 용융온도 및 주조시간을 조절하기 어렵고 이로 인해 가스공이나 핀홀과 같은 주조결함을 발생시키며 과열로 인한 보철물의 결함을 보이고 있다. 또한 합금이 용융된 후 주조 시 대부분 투시창이나 비접촉식 온도센서를 부착하여 적절한 주조온도가 되면 작업자가 원심력을 발생하는 버튼을 눌러 도가니에 용융된 합금을 주조링에 주입한다. 이러한 결과로 대부분 주조온도가 너무 높거나 낮아서 주조결함을 많이 발생하고 있으며 균일한 주조체를 얻지 못하고 있는 실정이다. 본 논문에서는 외부의 비접촉식 온도 센서를 이용한 온도계측이 아닌 실제 합금의 사용 온도를 계측할 수 있는 단일 온도센서를 이용한 치과용 고주파 주조기를 개발하였다.

Keywords

References

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