10 Questions
What is the primary function of the holes in the plate that allow the top and bottom (cope and drag) sections of the mold to be aligned accurately?
To enable the accurate alignment of the cope and drag sections of the mold
What is the purpose of the gating and riser system in the cope-and-drag patterns mentioned in the text?
To provide a path for the molten metal to enter the mold cavity
What is the primary purpose of a pattern in the sand casting process?
To define the external shape of the cast part
What is the main function of a core in the sand casting process?
To form the internal surfaces of the cast part
What is the purpose of the chaplets used in the mold when a core is present?
To hold the core in the desired position during pouring
What is the primary purpose of a match-plate pattern in sand casting?
To provide a means for accurately aligning the cope and drag sections of the mold
What is the primary function of the split pattern in sand casting?
To allow for the easy removal of the pattern from the mold after casting
What is the purpose of the allowances made in the size of the pattern and core for shrinkage and machining?
To ensure the correct final dimensions of the cast part
What is the purpose of the portion of the chaplet that protrudes from the casting after pouring and solidification?
To be cut off after the casting process is complete
What is the primary reason for using a higher melting temperature metal, such as steel, for the chaplets used in a cast iron casting?
To ensure the chaplets do not melt during the pouring of the molten metal
Learn about the various types of patterns used in casting, including solid patterns and the challenges associated with using them in making sand molds. Explore the importance of determining the parting line for the mold and incorporating gating systems and sprues.
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