Thermo-Insulating Moulding Sand for thin Walled Castings

Archives of Metallurgy and Materials

Szuter T.¹  Cholewa M.¹ 

[1] INSTITUTE OF CERAMIC AND BUILDING MATERIALS, REFRACTORY MATERIALS DIVISION, 99 TOSZECKA STR., 44-100 GLIWICE, POLAND;

关键词: cast iron;    vermicular graphite;    austempering;    abrasive wear resistance;   

DOI  :  10.2478/amm-2014-0184

来源: DOAJ

【 摘 要 】

In paper the selection of the composition and determination of main properties of novel moulding sand was described. The mail goal was to create moulding sand characterized by high thermal insulating properties in relations with low specific weight. This type of moulding sand will find application in thin walled castings with complex geometry, in particular for cores of the skeleton castings. In this work the results of the compressive strength, permeability and friability was presented. It was noted that aluminosilicate microspheres are suitable as moulding sand matrix. Influence of the polyglicol addition on quality and properties of the moulding sand was described. The use of the aluminosilicate microspheres allowed to obtain the moulding sand characterized by high insulation rate, low specific weight and good mechanical properties.

【 授权许可】

Unknown