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CEM Mold Oscillator의 안정성 평가

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원문보기

  • 발행기관 포항공과대학교 엔지니어링 대학원
  • 지도교수황운봉 교수님
  • 발행년도2016
  • 학위수여년월2016. 2
  • 학위명석사
  • 학과 및 전공엔지니어링대학원 플랜트시스템엔지니어링학과
  • 본문언어한국어
  • 저작권포항공과대학교 논문은 저작권에 의해 보호받습니다.
초록 moremore
Mold oscillator which is move to up-down direction to prevent the newly formed strand shell sticking to the mold wall is necessary. Recent mold oscillator has driving source as electro-hydraulic system and guide equipment of leaf spring and rolling element. Especially, The guide system is very impor...
Mold oscillator which is move to up-down direction to prevent the newly formed strand shell sticking to the mold wall is necessary. Recent mold oscillator has driving source as electro-hydraulic system and guide equipment of leaf spring and rolling element. Especially, The guide system is very important. Because Mold oscillator has structure which is moved to front-back or left-right direction because of manufacturing tolerance of moving/fixed frame and leaf spring etc, transition of center of mass by additional parts of piping etc, and wear of guide equipment. In case of CEM-Compact Endless casting-rolling Mill, Rolling element as main guide system is applied to mold oscillator. But, CEM has a plan to change guide system from rolling element to leaf spring because of Front-back or left-right displacement of mold oscillator depending on wear of rolling element. But, There are two key issues. The first is expandability of front-back or left-right movement of moving frame by leaf spring. The second is life span of leaf spring. The result of stability evaluation based on maximum stress by static load and rupture strength by fatigue test result by repeated load is stable. But, It is necessary to make improvement plan about front-back or left-right movement because maximum displacement is barely satisfied to standard of permission. It has possibility to exceed standard of permission under real operation condition. Therefore, it is suggested improvement idea to stable operation of mold oscillator.
목차 moremore
1. Introduction 1
1.1 Role of Mold 1
1.2 Primary Quality Factor of Mold 2
...
1. Introduction 1
1.1 Role of Mold 1
1.2 Primary Quality Factor of Mold 2
1.3 Role of Mold Oscillator 3
1.4 Mold Oscillator's Type 4
1.5 Mold Oscillator Comparison by Supplier 5
1.6 Importance of Guide System 6
1.7 Mold Oscillator of CEM 7
1.8 Weak Point of Existing Mold Oscillator 8
1.9 Necessity of a Research 9
2. Objective of Research 11
2.1 Objective 11
2.2 Main Contents 11
2.3 Strategy 11
3. Literature & Theoretical Background 14
3.1 Modal Analysis 14
3.2 Theory & Meaning of Modal Analysis 18
3.3 Rigid Body Mode 20
3.4 Requirements of Mold Oscillator 21
3.5 Feature of Leaf Spring 22
4. Modal Analysis 23
4.1 Modal Analysis of Leaf Spring 23
4.2 Modal Analysis of Leaf Spring Assembly 25
4.3 Modal Analysis of Oscillator 27
4.4 Modal Analysis of Mold Oscillator 31
4.5 Modal Analysis Synthesis 35
5. Stress Study 36
5.1 Method of Stress Study 36
5.2 Stress Study Result 39
5.3 Stress Study Synthesis 43
6. Conclusion 44
6.1 Stability Evaluation 44
6.2 Consideration 45