The lost foam casting economical efficiency

Jun. 30, 2026

The casting tonnage that consumes EPS cost is economical. According to related factory’s statistics, the average EPS model machining cost for every ton of casting is 100~150 RMB. It includes EPS plate material (or little STMMA, EPMMA plate material and EPS, or EPMMA, STMMA)particle foam mould to pattern. According to alloy material, casting size and structure, the coating is configured and used, The average cost for every ton of casting is 50~100 RMB. Figure1-3, it lists the economical comparison for casting production of lost foam casting process and sand casting process.

Technology process	Advantage	Disadvantage
Model production	Simplify factory’s engineering design Without sand model binder No sand core Mould can be repeated for sand model production	Increase model casting system The model is used only for one time
Casting	It saves metal, alloy casting liquid system use quantity. Ductile iron solidifies equally without riser	It increases model sand and casting cooling & conveying equipment
clean	It decreases casting’s surface clean work Without casting fins and rags For ductile iron casting, it doesn’t need to cut riser.	It increases the special tool to combine model clusters and removes the inner sprue gate
machining	It decreases casting’s machining allowance The casting is uniform which is convenient for automation
Environment protection	It reduces the environment pollution It simplifies environment protection measure
Mould	It reduces mould’s traditional production The mould is simple and single-minded for convenient maintenance The mould use life is long	The design is complex and period is long. It leads to high initial mould cost.
investment	The factory design level is flexible. It has economical scope as a whole. It is convenient for old workshop reform into lost foam casting process workshop	The mould production’s automatic degree is low.

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