Intensive riser cooling of castings after solidification

Kang, Jinwu; Hao, Xiaokun; Nie, Gang; Long, Haimin; Liu, Baicheng

doi:10.1016/j.jmatprotec.2014.08.021

Cited by 13 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of water cooling on the microstructure and mechanical properties of castings was investigated [15,16]. Kang et al proposed the post solidification-intensive-riser-cooling (PSIRC) method for heavy castings, and achieved their fast and even cooling [17]. The application of the additive-manufacturing method in castings provides more freedom for the design of castings, sand molds, and cores, for example, in the design of the skeleton structure of parts and lattice structures, core consolidation, and gating-system optimization, including pouring basins, sprues, and ingates [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Study on the Directional Solidification Process of an Aluminum Alloy Bar in Multishell Mold Being Gradually Immersed in Water

et al. 2020

Self Cite

View full text Add to dashboard Cite

A multishell mold structure and water-immersion cooling method (MSMWI) is proposed for the directional solidification of castings. A four-layer-shell sand mold was designed for a bar with diameter of 40 mm. As the aluminum melt was poured, the multishell mold was gradually immersed in water, and the water level drove the advancement of the solidification front from bottom to top. The multishell mold was helpful for the heat insulation of its upper part, and its bottom was chilled by the water. Therefore, directional solidification of the bar was vertically realized. The water-cooled solidification process of the bar was 5.8 times faster than that by air natural cooling (MSMNC), and the temperature gradient was increased by 78 times. The secondary dendrite arm spacing (SDAS) and eutectic silicon were significantly refined. Its tensile strength, elongation, and hardness were increased by 56%, 185%, and 62.6%, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on the Directional Solidification Process of an Aluminum Alloy Bar in Multishell Mold Being Gradually Immersed in Water

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…15 Singh et al 16 examined the effect of metal composition, slurry layer combination, and pouring temperature on dimensional deviation of casting and informed that all the factors are significant. Kang et al 17 attempted intensive cooling of riser by water spray which results in uniform temperature distribution and reduced residual deformation. Sabau 18 reported that in IC, mold configuration restricts air flow surrounding casting surfaces and affects the uniform cooling of mold.…”

Section: Introductionmentioning

confidence: 99%

Optimization of process parameters to improve dimensional accuracy of investment casting using Taguchi approach

Bansode¹,

Phalle²,

Mantha³

2019

Advances in Mechanical Engineering

View full text Add to dashboard Cite

In this study, Taguchi method is used to investigate the effect of critical process parameters of investment casting on dimensional variations of thin walled, complex geometrical stainless steel component. A set of experiments have been conducted to calculate shrinkages which is a measure of dimensional variation. The process parameters considered here are number of ceramic coats, pouring time, pouring temperature, and casting cooling rate. The signal-to-noise ratio and analysis of variance are used to study the influence of these parameters on shrinkage. Optimized condition for reduced shrinkage deviation can be obtained by selecting lower number of ceramic coats, faster and laminar metal pouring, lower superheated metal temperature, and faster cooling rate. Analysis of variance reports that the number of ceramic coats is the most significant parameter with more than 80% contribution whereas other parameters are insignificant. Investigation results also indicate that constraint dimension (width) has 25%-27% higher dimensional variability than non-constraint dimensions (height) for the selected component.

show abstract

“…Quenching improved the mechanical properties, despite being applied after the solidification process, which was done so as not to influence the creation of pre-eutectic Si particles. Kang et al (2015) investigated the post solidification intensive riser cooling method (PSIRC). Risers are cooled by forced air or water mist from its top surface at the moment that the solidification of a casting is finished.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Water Mist Cooling of Casting Die on the Solidification, Microstructure and Properties of AlSi20 Alloy

Władysiak¹,

Kozuń²,

Pacyniak³

2017

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

Unmodified AlSi20 alloy were casted at the research station, allowing for sequential multipoint cooling using a dedicated computer-controlled program. This method allows for the formation of the microstructure of hypereutectic AlSi20 alloy and also increases hardness. Primary silicon dendrites were found in the microstructure of cooled samples. Based on these dendrites, the formation of primary silicon particles is explained. Cooling of casting die with a water mist stream causes changes in solidification, which leads to expansion of the boundary layer with columnar crystals and shrinkage of the core zone with equiaxed crystals. It also causes more regular hardness distribution around pre-eutectic Si crystals, which can lead to tensile strength and machinability improvement.

show abstract

Intensive riser cooling of castings after solidification

Cited by 13 publications

References 5 publications

Study on the Directional Solidification Process of an Aluminum Alloy Bar in Multishell Mold Being Gradually Immersed in Water

Study on the Directional Solidification Process of an Aluminum Alloy Bar in Multishell Mold Being Gradually Immersed in Water

Optimization of process parameters to improve dimensional accuracy of investment casting using Taguchi approach

The Effect of Water Mist Cooling of Casting Die on the Solidification, Microstructure and Properties of AlSi20 Alloy

Contact Info

Product

Resources

About