摘要
依据航空发动机钛合金、高温合金环形锻件轧制生产“控形”、“控性”的要求,建立了适用于工程应用的轧制几何简化模型,推导出环外径增速v_(ΔD)或环内径增速v_(Δd)与内半径r_(t0)、芯辊径向进给速度v_(c)、主辊角速度ω_(m)、环形锻件壁厚(R_(t0)-r_(t0))的函数关系,从而用于指导航空环形锻件轧制参数设计,实现精准设计。研究结果表明,随着r_(t0)、v_(c)、ω_(m)的增加,v_(ΔD)增大;当环形锻件壁厚(R_(t0)-r_(t0))减小时,v_(ΔD)增大;对于厚壁环形锻件(法兰类环形锻件)或在环形锻件初始轧制时,应适当采用较小的环增速;对于薄壁件、大中型环形锻件或者环形锻件轧制减速阶段,需要采取控制措施来限制环增速增长过快,实现环轧过程的精确控制。
According to the requirements of“shape control”and“property control”in the rolling production of titanium alloy and superalloy ring forgings for aero engine,and a simplified rolling geometry model suitable for the engineering application was established,and the function relationship between ring outer diameter growth rate v_(ΔD)or ring inner diameter growth rate v_(Δd)and inner radius r_(t0),core roller radial feeding speed v_c,main roller angular velocity ω_(m) and wall thickness(R_(t0)-r_(t0))of ring forgings were derived to guide the design of rolling parameters for aviation ring forgings and realize the accurate design.The results show that with the increasing of r_(t0),v_(c) or ω_(m),v_(ΔD)increases.When the wall thickness(R_(t0)-r_(t0))of ring forgings decreases,v_(ΔD)increases.However,for thick-walled ring forgings(flange ring forgings)or ring forgings during the initial rolling,a smaller ring growth rate is appropriately adopted,and for thin-walled parts,large and medium-sized ring parts or ring forgings during the rolling deceleration stage,the control measures need to be taken to limit the ring growth rate from growing too fast and achieve the precise control of the ring rolling process.
作者
刘君
邹朝江
杨旭
李德军
李泽东
Liu Jun;Zou Chaojiang;Yang Xu;Li Dejun;Li Zedong(GATD-Sichuan Delan Co.,Ltd.,Deyang 618000,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2024年第1期142-146,共5页
Forging & Stamping Technology
关键词
环形锻件
轧制
环增速
内半径
芯辊径向进给速度
主辊角速度
壁厚
ring forgings
rolling
ring growth rate
inner radius
radial feeding speed of core roller
angular velocity of main roller
wall thickness
