【摘要】：采用6種不同的擠壓溫度進(jìn)行了7075鋁合金汽車差速器殼件的擠壓成形,并測(cè)試和分析了室溫下殼件試樣的拉伸性能和沖擊性能。結(jié)果表明:在模具預(yù)熱溫度390℃,擠壓筒溫度415℃和擠壓速度0.3 m/min時(shí),隨擠壓溫度從280℃增大到400℃,試樣的拉伸性能和沖擊性能均先提高后下降。280℃擠壓時(shí)殼件的拉伸性能和沖擊性能均最差。與280℃擠壓相比,385℃擠壓時(shí)殼件的抗拉強(qiáng)度、屈服強(qiáng)度、沖擊吸收功分別增大43、44 MPa、15 J,斷后伸長(zhǎng)率減小2.1%。7075鋁合金汽車差速器殼件的擠壓溫度優(yōu)選為385℃。
[Abstract]:The extrusion forming of 7075 aluminum alloy automobile differential housing was carried out at 6 different extrusion temperatures. The tensile and impact properties of the shell samples at room temperature were tested and analyzed. The results show that when the die preheating temperature is 390 鈩，

本文編號(hào)：2296823