Production of High Quality Aluminum Alloy Pressure-cooker by Counter-pressure Casting

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Production of High Quality Aluminum Alloy Pressure-cooker by Counter-pressure Casting
Vol. 29, Issue 12, Pages: 1118-1120(2009)
Published： 2009 ，
DOI：

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[1]连付奎,张广明,吴岳壹,王旭东.铝合金压力锅差压铸造工艺研究[J].特种铸造及有色合金,2009,29(12):1118-1120+1074.

Lian Fukui, Zhang Guangming, Wu Yueyi, et al. Production of High Quality Aluminum Alloy Pressure-cooker by Counter-pressure Casting. [J]. Special Casting & Nonferrous Alloys 29(12):1118-1120(2009)
[1]连付奎,张广明,吴岳壹,王旭东.铝合金压力锅差压铸造工艺研究[J].特种铸造及有色合金,2009,29(12):1118-1120+1074. DOI：

Lian Fukui, Zhang Guangming, Wu Yueyi, et al. Production of High Quality Aluminum Alloy Pressure-cooker by Counter-pressure Casting. [J]. Special Casting & Nonferrous Alloys 29(12):1118-1120(2009) DOI：

根据铝合金压力锅的产品结构和技术指标

设计金属型差压铸造模具及工艺方案

确定其工艺参数。在浇注温度为700～720℃、同步压力为0.6MPa、升液速度为35mm/s、充型速度为45mm/s、结晶保压时间为15～20s工艺下

试制的铝合金压力锅无缩孔和疏松等缺陷

晶粒比低压铸造试件细小

金相组织更致密

力学性能:σb≥315MPa

δ≥8%。

Based on analyzing structure features of high quality aluminum alloy pressure-cooker and its technological requirements

mould for permanent mold counter pressure casting and its processing were designed

and processing parameters were determined.In the condition of pouring at 700

20℃

pressure of 0.6MPa

lifting velocity of 35 mm/s and filling at 45 mm/s as well as holding pressure for 15

0 s

the absence of shrinkage hole（porosity）in the trial-production pressure-cooker can be observed

meanwhile

grain size in the alloy with more compact microstructure is refiner than that of one in low pressure casting

and tensile strength and elongation are higher than 315MPa and 8%

respectively.

差压铸造铝合金压力锅工艺参数力学性能

Counter-pressure CastingAluminum AlloyPressure-cookerProcessing ParametersMechanical Properties

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