強剪切作用下氬氣泡破碎行為及其對7075鋁合金除氣效果的影響
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-04-01
采用一種新型定子-轉(zhuǎn)子型強剪切裝置，通過水模擬實驗和鋁熔體除氣實驗相結(jié)合的方法研究強剪切作用對鋁合金除氣過程中氬氣泡的影響規(guī)律，進而研究其對7075鋁合金的除氣作用。
強剪切作用下氬氣泡破碎行為及其對7075鋁合金除氣效果的影響Dispersion behaviour of Ar bubbles under intensive shearing and its effect on degassing effect of 7075 alloy采用一種新型定子-轉(zhuǎn)子型強剪切裝置，通過水模擬實驗和鋁熔體除氣實驗相結(jié)合的方法研究強剪切作用對鋁合金除氣過程中氬氣泡的影響規(guī)律，進而研究其對7075鋁合金的除氣作用。結(jié)果表明：強剪切對氬氣泡具有強烈的破碎和分散作用，能夠?qū)⑼ㄈ肴垠w的氣泡轉(zhuǎn)變?yōu)榉浅＜毿〉臍馀荩⒕鶆蚍植加谌垠w之中。這種強剪切作用對7075鋁合金具有非常高效的除氣作用。在適當(dāng)?shù)某龤鈼l件下，經(jīng)過1 min除氣，合金密度指數(shù)Di由13.20%降低到0.65%，實測鋁中氫的含量由2.90 μL/g降低到1.10 μL/g，這顯著優(yōu)于傳統(tǒng)旋轉(zhuǎn)除氣方法。還詳細研究除氣時間以及除氣后靜置時間對氫含量的影響，并分析強剪切工藝高效除氣的機理。
The water simulation and alloy melt degassing experiments were carried out to study the effect of intensive shearing on Ar bubbles and its effect on the degassing of 7075 alloy by the application a newly developed stator-rotor type high shear unit. The results show that the intensive shearing can significantly disperse the Ar bubbles and improve the uniformity of their distribution. The alloy degassing experiments show that the high shearing can evidently degas 7075 aluminium alloy with a high efficiency. Under a proper degassing condition, after degassing for 1 min, the density index decreases from 13.20% to 0.65% and the measured concentration of hydrogen in the melt Al obviously reduces from 2.90 μL to 1.10 μL, which shows a much higher efficiency than that using the conventional rotary degassing method. The effects of the degassing time and isothermal holding time after degassing on hydrogen content were also studied and the mechanism of high efficient degassing of intensive shearing was analyzed.
作為值得信賴的合作伙伴和高品質(zhì)金屬合金的半成品供應(yīng)商，艾荔艾擁有完善的服務(wù)體系和專業(yè)的團隊。在同客戶交易的過程中，我們力求根據(jù)不同的應(yīng)用需求將我們的產(chǎn)品做到精益求精。針對當(dāng)前和未來的市場需求，艾荔艾致力于為客戶提供最佳的金屬材料解決方案。
AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
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For more information on the alloys and services that we supply,?call us?at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on?Weibo,?Weixin,?LinkedIn,?XING, Facebook?and?Twitter.