A computer-aided quality control method for the modification of AlSi12 melts

Veijo Rauta

Research output: Book/ReportReport

Abstract

The work concentrates on studying the sodium modification of AlSi alloys having silicon contents 9.85 - 13.5 %. Several test pieces including derivative thermal analysis (DERTA) samples, test bars for tensile tests and cylinders with different diameters were cast with different degrees of modification. Relationships between the degree of modification, chemical composition and thermal analysis parameters were studied by correlation analysis with a microcomputer. The results show that mechanical properties (the yield strength, the tensile strength and the elongation) increase in general with increasing degree of modification. A correlation between the degree of modification and the temperature of eutectic recalescence was found. On the basis of the results, a computer-aided quality control method was developed based on derivative thermal analysis. The method can be used to predict the degree of modification of AlSi 12-melts prior to casting. The quality control method has been successfully tested in the laboratory as well as in an industrial foundry.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages29
ISBN (Print)951-38-3411-5
Publication statusPublished - 1989
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
Number603
ISSN0358-5077

Fingerprint

Thermoanalysis
Quality control
Derivatives
Silicon alloys
Chemical modification
Foundries
Microcomputers
Eutectics
Yield stress
Elongation
Casting
Tensile strength
Sodium
Mechanical properties
Chemical analysis
Temperature

Keywords

  • aluminum silicon alloys
  • casting
  • modification
  • quality control

Cite this

Rauta, V. (1989). A computer-aided quality control method for the modification of AlSi12 melts. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 603
Rauta, Veijo. / A computer-aided quality control method for the modification of AlSi12 melts. Espoo : VTT Technical Research Centre of Finland, 1989. 29 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 603).
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Rauta, V 1989, A computer-aided quality control method for the modification of AlSi12 melts. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 603, VTT Technical Research Centre of Finland, Espoo.

A computer-aided quality control method for the modification of AlSi12 melts. / Rauta, Veijo.

Espoo : VTT Technical Research Centre of Finland, 1989. 29 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 603).

Research output: Book/ReportReport

TY - BOOK

T1 - A computer-aided quality control method for the modification of AlSi12 melts

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N2 - The work concentrates on studying the sodium modification of AlSi alloys having silicon contents 9.85 - 13.5 %. Several test pieces including derivative thermal analysis (DERTA) samples, test bars for tensile tests and cylinders with different diameters were cast with different degrees of modification. Relationships between the degree of modification, chemical composition and thermal analysis parameters were studied by correlation analysis with a microcomputer. The results show that mechanical properties (the yield strength, the tensile strength and the elongation) increase in general with increasing degree of modification. A correlation between the degree of modification and the temperature of eutectic recalescence was found. On the basis of the results, a computer-aided quality control method was developed based on derivative thermal analysis. The method can be used to predict the degree of modification of AlSi 12-melts prior to casting. The quality control method has been successfully tested in the laboratory as well as in an industrial foundry.

AB - The work concentrates on studying the sodium modification of AlSi alloys having silicon contents 9.85 - 13.5 %. Several test pieces including derivative thermal analysis (DERTA) samples, test bars for tensile tests and cylinders with different diameters were cast with different degrees of modification. Relationships between the degree of modification, chemical composition and thermal analysis parameters were studied by correlation analysis with a microcomputer. The results show that mechanical properties (the yield strength, the tensile strength and the elongation) increase in general with increasing degree of modification. A correlation between the degree of modification and the temperature of eutectic recalescence was found. On the basis of the results, a computer-aided quality control method was developed based on derivative thermal analysis. The method can be used to predict the degree of modification of AlSi 12-melts prior to casting. The quality control method has been successfully tested in the laboratory as well as in an industrial foundry.

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BT - A computer-aided quality control method for the modification of AlSi12 melts

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Rauta V. A computer-aided quality control method for the modification of AlSi12 melts. Espoo: VTT Technical Research Centre of Finland, 1989. 29 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 603).