摘要
研制开发了一种径向自紧密封式不锈钢衬里复合管液压胀合成形装置.讨论了复合管液压胀合成形过程的原理,并采用弹塑性理论分析了其在胀合成形过程中内管及外管的应力应变状态.利用变形协调条件,得出了胀合压力pe与复合管内外管之间残余接触压力pr*的理论计算公式,并通过试验对公式进行了验证.结果表明该装置结构及其计算方法均可适于工程应用.
The bimetallic CRA-lined pipe, which has an inner
layer made of a very resistal CRA and an outer layer made of
low-cost steel, is utilised in oil production, in nuclear power
plants and in refining industry increasingly. A new kind of
hydraulic expansion device of manufacturing bimetallic CRA-
lined pipe is researched and developed. Based on the elasticity-
plasticity theory the stress and strain of the inner and outer pipe
are analyzed theoretically during hydro-forming expansion
process. By using deformation condition of compatibility the
calculating formulas related hydro-forming pressure to the
residual contact pressure between inner and outer pipe is de-
rived. The theoretical analysis is verified by experimental re-
sults.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2004年第5期72-76,共5页
Journal of Mechanical Engineering
基金
国家'九五'科技攻关资助项目(96-918-02-03)
