Details

Title

Method of the Moulding Sands Binding Power Assessment in Two-Layer Moulds Systems / Metoda oceny wielkości siły wiązania mas w układzie form dwuwarstwowych

Journal title

Archives of Foundry Engineering

Yearbook

2013

Numer

No 2

Publication authors

Keywords

Innovative materials and foundry technologies ; mechanical properties ; Two-layer moulds ; Moulding sands ; Alkaline organicbinder

Divisions of PAS

Nauki Techniczne

Description

Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.

Abstract

More and more foundry plants applying moulding sands with water-glass or its substitutes for obtaining the high-quality casting surface at the smallest costs, consider the possibility of implementing two-layer moulds, in which e.g. the facing sand is a sand with an organic binder (no-bake type) and the backing sand is a sand with inorganic binder. Both kinds of sands must have the same chemical reaction. The most often applied system is the moulding sand on the water-glass or geopolymer bases – as the backing sand and the moulding sand from the group of self-hardening sands with a resol resin – as the facing sand. Investigations were performed for the system: moulding sand with inorganic GEOPOL binder or moulding sand with water glass (as a backing sand) and moulding sand, no-bake type, with a resol resin originated from various producers: Rezolit AM, Estrofen, Avenol NB 700 (as a facing sand). The LUZ apparatus, produced by Multiserw Morek, was adapted for investigations. A special partition with cuts was mounted in the attachment for making test specimens for measuring the tensile strength. This partition allowed a simultaneous compaction of two kinds of moulding sands. After 24 hours of hardening the highest values were obtained for the system: Geopol binder - Avenol resin.

Publisher

The Katowice Branch of the Polish Academy of Sciences

Date

2013

Type

Artykuły / Articles

Identifier

ISSN 2299-2944

References

Pezarski (2006), Investigation of moulding and core sand for production of steel castings using a new geopolymeric binder system od FoundryEngineering, Archives, 6, 65. ; Holtzer (2012), Influence of the chemical character of a sand grains and binder on properties of moulding sand with organic binding agents of FoundryEngineering spec, Archives, 12, 69. ; Holtzer (2011), Production of steel casts in two - layer moulds with alkaline bindes ofFoundry Engineering, Archives, 11, 41. ; Holtzer (2011), Production of steel casts in two - layer moulds with alkaline binders Facing sand with the alkaline organic binder REZOLIT of Foundry Engineering spec, Archives, 11, 81. ; Holtzer (2003), Trends in sand moulds and cores with organic binder of Foundry Engineering, Archives, 189.

DOI

10.2478/afe-2013-0033

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