(北京有色金屬研究總院 有色金屬材料制備加工國家重點(diǎn)實(shí)驗(yàn)室，
北京 100088)
摘 要: 介紹了一種制備半固態(tài)漿料的新工藝——阻尼冷管法(DCT)， 利用流體分析軟件FLOW3D對(duì)AZ91D鎂合金在阻尼冷管中的制備過程進(jìn)行三維數(shù)值模擬， 獲得了制備半固態(tài)漿料過程中金屬的流動(dòng)規(guī)律， 并得出了壓頭高度、 楔形形狀及縫隙大小對(duì)合金熔體流動(dòng)及制備出的半固態(tài)漿料均勻程度的影響規(guī)律,從而為DCT模具的設(shè)計(jì)及工藝參數(shù)的優(yōu)化提供有效的理論指導(dǎo)。
關(guān)鍵字: 阻尼冷管法； 半固態(tài)漿料； AZ91D鎂合金
（State Key Laboratory for Fabrication and Processing of Non-ferrous Metals, Beijing General Research Institute for Non-ferrous Metals, Beijing 100088, China）
Abstract: A new damper cooling tube method used to prepare semi-solid slurry of AZ91D magnesium alloy was introduced. 3D numerical simulations for the flow patterns of AZ91D magnesium alloy in DCT process were carried out by FLOW3D. The effects of technical parameters, such as pressure head, wedge shape and gap size, on the metal flow uniformly were obtained. The results will give effective guidelines for DCT's design and optimization of process parameters.
Key words: damper cooling tube method; semi-solid slurry; AZ91D magnesium alloy
