Roughness of surface of vacuum castings prepared in plaster moulds

The results of researches on surface roughness of CuSn10 and CuSn5Zn5Pb5 bronzes and aluminum AlSi11 alloy vacuum castings prepared in plaster moulds are presented in this paper. Test samples were cut from stripe castings of dimensions 100x15x1 mm. Surfaces were carefully cleaned with use of soft br...

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Main Author:	M. Pawlak
Format:	Article
Language:	English
Published:	Sciendo 2011-07-01
Series:	Archives of Foundry Engineering
Subjects:	Modern castingmaterials and technologies Precision castings Plaster mould Precision casting surface roughness
Online Access:	http://www.afe.polsl.pl/index.php/pl/2920/roughness-of-surface-of-vacuum-castings-prepared-in-plaster-moulds.pdf

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spelling	doaj-art-661b9a40ddad4517b54f53585ec79a312018-09-02T04:00:42ZengSciendoArchives of Foundry Engineering 1897-33102011-07-0111SI 3157162Roughness of surface of vacuum castings prepared in plaster mouldsM. PawlakThe results of researches on surface roughness of CuSn10 and CuSn5Zn5Pb5 bronzes and aluminum AlSi11 alloy vacuum castings prepared in plaster moulds are presented in this paper. Test samples were cut from stripe castings of dimensions 100x15x1 mm. Surfaces were carefully cleaned with use of soft brush than in ultrasonic washer and dried. Experimental castings were prepared in moulds made of two types of plaster. Cast temperatures were 1120 and 1200°C for bronzes and 700 and 800°C for silumin. Temperatures of the mould were 500 and 600°C for bronzes and 200 and 300°C for aluminum alloy. The roughness measurements were carried out with use of Hommelwerke Tester T1000. The average arithmetic deviation of roughness profile Ra, the ten-point height of irregularities Rz and maximum peak to valley height Rm, were measured.It can be stated, on the base of obtained results, that technology of casting in plaster moulds allows preparation of castings of very low roughness, average Ra=0,88÷1,74μm for bronzes and Ra=0,59÷0,83μm for aluminum alloys. Roughness of the surface depends in fact on the cast material. Type of plaster and casting parameters have negligible influence on it.http://www.afe.polsl.pl/index.php/pl/2920/roughness-of-surface-of-vacuum-castings-prepared-in-plaster-moulds.pdfModern castingmaterials and technologiesPrecision castingsPlaster mouldPrecision casting surface roughness
institution	Open Data Bank
collection	Open Access Journals
building	Directory of Open Access Journals
language	English
format	Article
author	M. Pawlak
spellingShingle	M. Pawlak Roughness of surface of vacuum castings prepared in plaster moulds Archives of Foundry Engineering Modern castingmaterials and technologies Precision castings Plaster mould Precision casting surface roughness
author_facet	M. Pawlak
author_sort	M. Pawlak
title	Roughness of surface of vacuum castings prepared in plaster moulds
title_short	Roughness of surface of vacuum castings prepared in plaster moulds
title_full	Roughness of surface of vacuum castings prepared in plaster moulds
title_fullStr	Roughness of surface of vacuum castings prepared in plaster moulds
title_full_unstemmed	Roughness of surface of vacuum castings prepared in plaster moulds
title_sort	roughness of surface of vacuum castings prepared in plaster moulds
publisher	Sciendo
series	Archives of Foundry Engineering
issn	1897-3310
publishDate	2011-07-01
description	The results of researches on surface roughness of CuSn10 and CuSn5Zn5Pb5 bronzes and aluminum AlSi11 alloy vacuum castings prepared in plaster moulds are presented in this paper. Test samples were cut from stripe castings of dimensions 100x15x1 mm. Surfaces were carefully cleaned with use of soft brush than in ultrasonic washer and dried. Experimental castings were prepared in moulds made of two types of plaster. Cast temperatures were 1120 and 1200°C for bronzes and 700 and 800°C for silumin. Temperatures of the mould were 500 and 600°C for bronzes and 200 and 300°C for aluminum alloy. The roughness measurements were carried out with use of Hommelwerke Tester T1000. The average arithmetic deviation of roughness profile Ra, the ten-point height of irregularities Rz and maximum peak to valley height Rm, were measured.It can be stated, on the base of obtained results, that technology of casting in plaster moulds allows preparation of castings of very low roughness, average Ra=0,88÷1,74μm for bronzes and Ra=0,59÷0,83μm for aluminum alloys. Roughness of the surface depends in fact on the cast material. Type of plaster and casting parameters have negligible influence on it.
topic	Modern castingmaterials and technologies Precision castings Plaster mould Precision casting surface roughness
url	http://www.afe.polsl.pl/index.php/pl/2920/roughness-of-surface-of-vacuum-castings-prepared-in-plaster-moulds.pdf
_version_	1612658391109337088

Roughness of surface of vacuum castings prepared in plaster moulds

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