Which critical mold defect in investment casting leads to dimensional inaccuracies?

💡 Explanation

Shell distortion during burnout causes dimensional inaccuracies because it alters the mold cavity's shape before metal is introduced through gravity casting. Therefore, the casting reproduces the distorted mold rather than the intended geometry because of thermal expansion rather than alloy chemistry influence.

• Which task relies intensely on precise inverse kinematics?
• Which consequence results when an encoder disk's grid spacing degrades in a CNC milling machine's spindle motor?
• Which outcome occurs during investment casting of turbine blades when environmental humidity spikes during shell drying?
• Which outcome occurs when lateral torsional buckling (LTB) exceeds the allowable limit in a steel I-beam under a bending load?
• Which outcome occurs when exhaust back pressure exceeds the threshold?
• Which outcome occurs when a hermetic refrigeration compressor loses its refrigerant charge during operation?