A friend asked me why a particular sprue, regardless of the product assembled, showed no cracks after dewaxing but consistently cracked after firing.
They Ran Multiple Batches, Yet the Rejection Rate Remains High at 40% Figure 1: Shell leakage occurring on both narrow slots of the castingAt first
IntroductionPitting defects, often observed on the surface of investment castings, have long been a topic of debate among researchers and practitioners.
Today, we are sharing an insightful paper by Teacher Feng Zhenchuan. The purpose of this share is to clarify the real cause of “spalling” defects in
In an investment casting communication group, a member posted the photo shown in Figure 1 with the question: “Experts, what causes these widespread
Is this defect caused by inadequate local cleaning of the wax pattern, resulting in poor adhesion between the shell’s face coat and the wax, leading to
Figure 1: Rough surface on casting due to carbon contamination.Why is this defined as a defect caused by poor dewaxing and inadequate firing? First,
In today’s discussion, we will examine a typical shrinkage defect in a hardware casting product to analyze how casting structure and gating system
A colleague sent me a photo asking if the casting defect was caused by wax ash. Below are the two images he shared—Figure 1 and Figure 2.
What is the impact on castings if the shell looks like this after burnout? The user sent me two photos, shown as Figure 1 and Figure 2.