Preparation of Fuel Tank Interface Thin-wall Aluminium Alloy Casting by SLS Molding Sand Process

Liang Xiaowen; Xu Zhifeng; Rao Jianghua; Nie Mingming; Zhao Kaifa; Zhang Yiming

doi:10.15980/j.tzzz.2017.02.030

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Preparation of Fuel Tank Interface Thin-wall Aluminium Alloy Casting by SLS Molding Sand Process
Vol. 37, Issue 2, Pages: 225-228(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.02.030

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[1]梁小文,徐志锋,饶江华,聂明明,赵开发,张益铭.基于SLS整体砂型的薄壁铝铸件的快速成形[J].特种铸造及有色合金,2017,37(02):225-228.

Liang Xiaowen, Xu Zhifeng, Rao Jianghua, et al. Preparation of Fuel Tank Interface Thin-wall Aluminium Alloy Casting by SLS Molding Sand Process. [J]. Special Casting & Nonferrous Alloys 37(2):225-228(2017)
[1]梁小文,徐志锋,饶江华,聂明明,赵开发,张益铭.基于SLS整体砂型的薄壁铝铸件的快速成形[J].特种铸造及有色合金,2017,37(02):225-228. DOI： 10.15980/j.tzzz.2017.02.030.

Liang Xiaowen, Xu Zhifeng, Rao Jianghua, et al. Preparation of Fuel Tank Interface Thin-wall Aluminium Alloy Casting by SLS Molding Sand Process. [J]. Special Casting & Nonferrous Alloys 37(2):225-228(2017) DOI： 10.15980/j.tzzz.2017.02.030.

摘要

针对某航空厂采用熔模铸造制备某油箱接管薄壁铸件存在周期长、力学性能差等问题

采用选区激光烧结（SLS）直接制备其整体砂型/砂芯

克服了传统砂型铸造存在铸件表面粗糙、异型曲面结构尺寸误差大

及砂芯错位引起的浇不足等缺陷。并采用低压铸造成形

获得了冶金品质好、几何尺寸合格、表面粗糙度（Ra）为6.3μm及尺寸精度为CT6

T8级、最小壁厚仅为1.2mm的复杂曲面油箱接管铝铸件

实现了薄壁铝铸件油管的精密砂型快速铸造

满足了使用要求。

Abstract

Aiming at some problems in investment casting thin-walled oil tank conncting tube

such as long production period and low mechanical properties

SLS was adopted to directly prepare the whole sand mold/sand core to eleminate surface roughness

high error in abnormal curture face size and misrun as a result of sand core dislocation.The complicated curvature face oil tand connecting tube was produced by low pressure casting

which have the features of high metallurigical quality and geometric size and Ra 6.3μm and size precision of CT6

T8as well as the mininum thin wall-thickness of 1.2mm.