In order to predict the performance of a riser sleeve using simulation software, the thermophysical properties of that sleeve must be known. Current literature gives little to no information about these properties. Some manufacturers have given these properties as an optional module for simulation software without revealing their actual values. The accuracy of these “black box” properties is un...

Based on the solidification heat transfer model and CAFÉ model, structure of GCr15 bloom alloy was studied. Using nail shooting acid etching experiments, models were verified. The secondary dendrite arm spacing (SDAS) obtained by simulation calculation metallographic observation. With increase casting speed, SDAS, equiaxed crystal ratio (ECR) average grain size increase. rise superheat, SDAS in...

A model is developed that predicts the motion and growth of oxide inclusions during pouring, as well as their final locations on the surface of steel sand castings. Inclusions originate on the melt free surface, and their subsequent growth is controlled by oxygen transfer from the atmosphere. Inclusion motion is modeled in a Lagrangian sense, taking into account drag and buoyancy forces. The in...

Indigenous product development using conventional means involves a relatively long lead-time and cost, especially for replacing worn-out and broken parts. This paper presents methodologies and technologies for computer-aided reverse engineering, illustrated by a real-life case study of an aluminium-alloy separator body of a hydraulic filter assembly for a special army vehicle. It involved recon...

A 3-dimensional finite element model is developed to simulate and analyze the temperature and degree of cure field of epoxy casting part during cure process. The present model based on general finite element software ABAQUS is verified by literature example and experimental data. The numerical results show good agreement with literature example and measured data, and are even more accurate than...

Recently, a new method of a press casting using greensand mold was proposed by our group as a means of ferrous casting. This method has advantages in terms of energy savings and cost because a sprue cup and runner channel are not needed. Still, it is important to pour accurately and quickly in this method. Therefore, a feedforward outflow control is presented by using a mathematical model and i...