INFLUENCE OF MODIFCATION ON THE REFINEMENT OF PRIMARY SILICON CRYSTALS IN HYPEREUTECTIC SILUMIN AlSi21CuNi
Journal Title: Production Engineering Archives - Year 2018, Vol 19, Issue
Abstract
On the paper the influence of modifying micro additives on the refinement of primary silicon crystals in the hypereutectic AlSi21CuNi piston silumin have been examined. As the modifiers there were used micro additives of Phosphorus in the form of AlCu19P1.4 and CuP12 pre-alloys, sulfur in the form of CuS and iron in the powdered form. The modifying micro additives were used separately and together. Micro additions of iron were used together with phosphorus. Sulfur micro addition provided the frag-mentation of the primary silicon crystals, but not as effective as the phosphorus micro additive. The best effect of fragmentation of the primary silicon crystals was ensured by the combined addition of phosphorus in the form of AlCu19P1,4 pre alloy with a micro additive of powdered iron which re-duced the average size of the primary silicon crystals from 114 μm to 20 μm.
Authors and Affiliations
Remigiusz Romankiewicz, Ferdynand Romankiewicz
Keywords
Related Articles
- EP ID EP489021
- DOI 10.30657/pea.2018.19.07
- Views 78
- Downloads 0
Review of Policies for Promotion of Electric Vehicles
This paper presents the review of policies and their possible effects for promoting the use of electric vehicles. Suggestions on faster implementation of electric vehicles can also be identified within best practices fro...
Additional components of risk assessment and their impact on the probability parameter
The article raises the issue of risk assessment and its impact on the quality and safety of work. During the assessment of the turning lathe position additional components associated with the jobs personalization were ta...
Employees satisfaction – innovative approach
The problem of assessing employee satisfaction is presented in this chapter. It contains suggestions of other, often innovative interpretations of factors. Evaluations of two main areas are also explored: the area of exp...
EMPLOYEES MOTIVATION IN TWO WOOD INDUSTRY COMPANIES IN CROATIA
This research analysed the motivating and demotivating factors amongst employees in two wood processing companies in Croatia. Research was conducted over the year 2014 and 2015, during the economic recovery of the compan...
VALUE STREAM MAPPING AS LEAN PRODUCTION TOOL TO IMPROVE THE PRODUCTION PROCESS ORGANIZATION – CASE STUDY IN PACKAGING MANUFACTURING
In the paper, the method of the production process improvement with the use of lean production tools has been presented. The Value Stream Mapping (VSM) for the cardboard packaging production process has been presented. O...