Effect of melt cleanliness on the formation of porosity defects in automotive aluminium high pressure die castings

Tian, Chenguo; Law, Jane; Touw, JW van der; Murray, M. T.; Yao, Jiyong; Graham, D.A.; John, D. H. St

doi:10.1016/s0924-0136(01)01229-8

Cited by 44 publications

(13 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tian et al 38 studied the effect of melt cleanliness on the formation of porosity defects in automotive aluminum high pressure die castings, and found that the probability of rejection due to excessive porosity present at critical locations in the castings increased as the number of inclusions in the melt increased. They also observed that the effect of inclusions on porosity formation depends not only on the number, size and spatial distribution but also on the nature i.e., type and shape of the inclusions.…”

Section: Effect Of Inclusionsmentioning

confidence: 99%

Effet des imperfections de la coulée sur les propriétés en fatigue des alliages de fonderie aluminium silicium /

Ammar¹

2006

View full text Add to dashboard Cite

Section: Effect Of Inclusionsmentioning

confidence: 99%

Effet des imperfections de la coulée sur les propriétés en fatigue des alliages de fonderie aluminium silicium /

Ammar¹

2006

View full text Add to dashboard Cite

“…The high malleability and ductility of lead combined with its high resistance to corrosion makes it an appropriate material for roofing applications and architectural cladding [4]. Lead sheet are also used in the manufacture of lead lined boards for radiation protection in the healthcare industry due to their high density (11,340 kg/m 3 ) and attenuation coefficient (5.549 cm 2 /g at 100 KeV) especially for high energy X-rays [5,6].…”

Section: Introductionmentioning

confidence: 99%

Minimising Defect Formation in Sand Casting of Sheet Lead: A DoE Approach

Prabhakar

Papanikolaou

Salonitis

et al. 2020

Metals

View full text Add to dashboard Cite

Sand casting of lead sheet is a traditional manufacturing process used up to the present due to the special features of sand cast sheet such as their attractive sheen. Similarly to any casting process, sand casting of lead sheet suffers from the presence of surface defects. In this study, a surface defect type, hereby referred to as ‘grooves’, has been investigated. The focus has been laid on the identification of the main factors affecting defect formation in this process. Based on a set of screening experiments performed using Scanning Electron Microscopy (SEM) as well as the existing literature, a number of factors affecting the formation of such defects was identified and their corresponding significance was estimated using the Analysis of Variance (ANOVA) technique. The obtained results suggest that the most significant factor affecting defect formation in sand casting of lead sheet is the composition of the moulding mixture. Defect formation was also proven to be dependent on the sand grain fineness, the quality of the melt and some of the interactions between the aforementioned process parameters. Finally, an optimal set of process parameters leading to the minimisation of surface defects was identified.

show abstract

“…High pressure die casting (HPDC) is widely used for manufacturing components with high integrity and productivity. Nevertheless, porosity, oxides and undesired structures are frequent and could cause premature failure of the components obtained through HPDC [1]. The quality and the mechanical properties of the parts depend on the features of the whole process [2], including the die (such as geometry, the nozzle position, mold surface features related to friction and coating [3]), the temperature, the chemical composition of the injected alloy, the pressure exerted by the injection machine and the motion profile of the plunger.…”

Section: Introductionmentioning

confidence: 99%

A Tool for Predicting the Effect of the Plunger Motion Profile on the Static Properties of Aluminium High Pressure Die Cast Components

Fiorese

Bonollo

Battaglia

2018

Metals

View full text Add to dashboard Cite

The availability of tools for predicting quality in high pressure die casting is a challenging issue since a large amount of defects is detected in components with a consequent worsening of the mechanical behavior. In this paper, a tool for predicting the effect of the plunger motion on the properties of high pressure die cast aluminum alloys is explained and applied, by demonstrating its effectiveness. A comparison between two experiments executed through different cold chamber machines and the same geometry of the die and slightly different chemical compositions of the alloy is described. The effectiveness of the model is proved by showing the agreement between the prediction bounds and the measured data. The prediction model proposed is a general methodology independent of the machine and accounts for the effects of geometry and alloy through its coefficients.

show abstract

Effect of melt cleanliness on the formation of porosity defects in automotive aluminium high pressure die castings

Cited by 44 publications

References 1 publication

Effet des imperfections de la coulée sur les propriétés en fatigue des alliages de fonderie aluminium silicium /

Effet des imperfections de la coulée sur les propriétés en fatigue des alliages de fonderie aluminium silicium /

Minimising Defect Formation in Sand Casting of Sheet Lead: A DoE Approach

A Tool for Predicting the Effect of the Plunger Motion Profile on the Static Properties of Aluminium High Pressure Die Cast Components

Contact Info

Product

Resources

About