精密成形工程
精密成形工程
정밀성형공정
METAL FORMING TECHNOLOGY
2011年
6期
98-101
,共4页
厚壁封头%接管成形%有限元模拟%试验
厚壁封頭%接管成形%有限元模擬%試驗
후벽봉두%접관성형%유한원모의%시험
thick-wall head%connection tube forming%finite element simulation%experiment
针对核电容器上的接管采用焊接连接存在的隐患,研究了厚壁封头接管整锻成形技术。采用DEFORM3D软件对壁厚为325mm的大型厚壁封头接管成形过程进行了模拟研究。获得了变形区金属应力变化规律,并对预加工孔径、凹模中心孔等工艺参数进行了分析,研究了其对成形质量的影响并得出相应的优化数据。通过缩比试验验证了有限元分析计算的正确性,为该工艺的工程应用奠定了科学基础。
針對覈電容器上的接管採用銲接連接存在的隱患,研究瞭厚壁封頭接管整鍛成形技術。採用DEFORM3D軟件對壁厚為325mm的大型厚壁封頭接管成形過程進行瞭模擬研究。穫得瞭變形區金屬應力變化規律,併對預加工孔徑、凹模中心孔等工藝參數進行瞭分析,研究瞭其對成形質量的影響併得齣相應的優化數據。通過縮比試驗驗證瞭有限元分析計算的正確性,為該工藝的工程應用奠定瞭科學基礎。
침대핵전용기상적접관채용한접련접존재적은환,연구료후벽봉두접관정단성형기술。채용DEFORM3D연건대벽후위325mm적대형후벽봉두접관성형과정진행료모의연구。획득료변형구금속응력변화규률,병대예가공공경、요모중심공등공예삼수진행료분석,연구료기대성형질량적영향병득출상응적우화수거。통과축비시험험증료유한원분석계산적정학성,위해공예적공정응용전정료과학기출。
The hot forming process of connection tube in a thick-wall head with 325 mm thickness is simulated by DE- FORM. Variable law of stress in deformed area is obtained. Processing parameters, such as diameter of pre-holes, center hole of low die, and their effects on forming are researched. Better processing parameters were obtained by simulation. The scale experiment shows that finite element method is correct and the results can provide the scientific base for engineering application of the process.
