The Effect of a Thin-Wall Casting Mould Cavity Filling Conditions on the Casting Surface Quality

被引：10

作者：

Trytek, A. ^{[1
]}

Orlowicz, A. W. ^{[1
]}

Tupaj, M. ^{[1
]}

Mroz, M. ^{[1
]}

Markowska, O. ^{[1
]}

Bak, G. ^{[2
]}

Abram, T. ^{[2
]}

机构：

[1] Rzeszow Univ Technol, Dept Casting & Welding, Al Powstancow Warszawy 12, PL-35959 Rzeszow, Poland

[2] Drummonds, Ul Lipinskiego 109, PL-38500 Sanok, Poland

来源：

ARCHIVES OF FOUNDRY ENGINEERING | 2016年 / 16卷 / 04期

关键词：

Thin-wall casting; Grey cast iron; Cold shots; Simulation;

D O I：

10.1515/afe-2016-0113

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The paper presents results of metallographic examination of faults occurring in the course of founding thin-walled cast-iron castings in furan resin sand molds. A non-conformance of the scab type was Observed on surface of the casting as well as sand buckles and cold shots. Studied the chemical composition by means of a scanning electron microscope in a region of casting defects: microanalysis point and microanalysis surface. Around the observed defects discloses high concentration of oxides of iron, manganese and silicon. A computer simulation of the casting process has been carried out with the objective to establish the cause of occurrence of cold shots on casting surface. The simulation was carried out with the use of NovaFlow & Solid program. We analyzed the flowing metal in the mold cavity. The main reason for the occurrence of casting defects on the surface of the casting was gating system, which caused turbulent flow of metal with a distinctive splash stream of liquid alloy.

引用

页码：222 / 226

页数：5

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