超塑胀形实验装置的研究进展

Research on progress of experiment facility for superplastic bulging

超塑胀形实验装置是研究超塑胀形理论研究的重要装备,综述了国内外学者对于胀形实验装置的系统研究以及取得的系列科研成果。胀形装置在胀形高度-时间关系H(t)的测量方面,从接触式测量装置发展到光电式非接触式测量装置;在胀形压力(P-t)控制方面,从压力表控制发展到单片机控制,并得出了胀形实验P(t)关系对胀形高度H(t)关系、胀形件形状及壁厚分布的影响规律。由于超塑性材料对胀形压力的敏感性很强,因此胀形压力的实时控制是胀形装置研究的未来发展方向。

Experimental apparatus of superplastic bulging is the important equipment for theory research on superplastic bulging. The systematical research of bulging experiment apparatus and a series of scientific research achievements were reviewed by the scholars at home and abroad. The bulging apparatus measuring the relationship between height and time H （t） was developed from the contact measuring apparatus to photoelectric measuring apparatus. The control of bulging pressure was developed from pressure gauge control to the singlechip microcomputer control. The relationship between the bulging experiment P （t） and bulging height H （ t）, as well as the type of bulging parts and the influence law of wall thickness distribution were obtained. Because superplastic materials is very sensitive to the bulging pressure, bulging pressure in real-time control is the future development direction of bulging apparatus research.