发明公开
EP0519479A3 Method for flame abrasion of glass preform 失效
玻璃预制件的火焰磨蚀方法

Method for flame abrasion of glass preform
摘要:
A glass preform (1) is preheated and then subjected to a flame abrasion by oxyhydrogen flame (4). A surface of the glass preform (1) thus abrased has no crack during the cooling after the flame abrasion.
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