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    不銹鋼管和鈦管的氣動(dòng)泄漏密實(shí)性試驗(yàn)新方法

    A Newly-developed Pneumatic Process for Leak Testing of Stainless Steel Tube and Titanium Alloy Tube

    • 摘要: 分析了水下氣壓試驗(yàn)、水壓試驗(yàn)和渦流或超聲波無(wú)損檢測(cè)等3種泄漏密實(shí)性試驗(yàn)在不銹鋼管和鈦管泄漏量檢查中的優(yōu)缺點(diǎn),介紹了氣動(dòng)泄漏試驗(yàn)的原理、方法、判別準(zhǔn)則及其優(yōu)越性。分析認(rèn)為,在不銹鋼管和鈦管的泄漏密實(shí)性檢測(cè)中,氣動(dòng)泄漏試驗(yàn)的靈敏度高,且全自動(dòng),但其關(guān)鍵是設(shè)計(jì)或采購(gòu)具有高靈敏度壓力或壓差的傳感器,并采用激光打孔法制作0.076~0.152mm細(xì)微泄漏孔的標(biāo)樣管。

       

      Abstract: Analyzed are the advantages and shortcomings of the three typical leak testing processes for the stainless steel tube and the titanium alloy tube,i.e.,underwater pneumatic test,hydrostatic test and eddy-current or ultrasonic nondestructive test.Described are the work principle,operation procedure,evaluation criteria and advantages of the new pneumatic leak testing process.The analysis leads to such a conclusion that among the commonly-used leak testing processes for the stainless steel tube and the titanium alloy tube,the said new pneumatic process is distinguished from the others with such advantageous features as high sensitivity,full automation,and above all,employment of hi-sensitive pressure or differential pressure sensor,and using reference pipe with 0.076~0.152 mm fine leakage holes as made by means of the laser-punching method.

       

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