Stabilizing treatment for metallic parts of precise equipment instrument for aviation 航空精密儀器儀表金屬制件的尺寸穩(wěn)定化處理
Perfluorinated ethylene - propylene is an important plastic , but the unstable end groups must be stabilized before sale . several stabilized treatments were reviewed in this paper 摘要聚全氟乙丙烯是一種重要的特種塑料,但需要對不穩(wěn)定末端基進(jìn)行處理才能作為商品出售,本文綜述了聚全氟乙丙烯不穩(wěn)定末端基的幾種穩(wěn)定化處理方法。
Abstract : the change in strength , plasticity and relaxation rate of pc steel strand before and after stabilizing has been analyzed by means of fracture and stress relaxation tests . the effect of treatment parameters and tensile stress on the properties was obtained and optimum parameters of stabilizing treatment were also proposed 文摘:通過對預(yù)應(yīng)力( pc )鋼絞線穩(wěn)定化處理及隨后的破斷、應(yīng)力松弛試驗,分析了處理前后強(qiáng)度、塑性、松弛率指標(biāo)的變化趨勢,得出了工藝溫度、張應(yīng)力對性能指標(biāo)的影響規(guī)律,進(jìn)而提出了穩(wěn)定化處理的最佳工藝參數(shù)。