Please provide me the detailed and plagiarism free answer
Open Ended Assignment
While cores increase the cost of castings, they also provide a number of distinct advantages. The most significant is the ability to produce complex internal passages. They can also enable the production of difficult external features, such as undercuts, or allow the production of zero draft walls. Cores can reduce or eliminate additional machining, reduce the weight of a casting, and reduce or eliminate the need for multi-piece assembly. Answer the following questions about cores.
a. The cores themselves must be produced, and generally have to be removed from core boxes or molds. What geometric limitations might this impose? How might these limitations be overcome?
b. Cores must be positioned and supported within a mold. Discuss some of the limitations associated with core positioning and orientation. Consider the weight of a core, prevention of core fracture, minimization of core deflection, and possible buoyancy.
c. Because cores are internal to the casting, adequate venting is necessary to eliminate or minimize porosity problems. Discuss possible features to aid in venting.
d. How might core behavior vary with different materials being cast—steel versus aluminum, for example?
e. Discuss several of the reasons cores may be made from a different material than the molding material used in the primary mold.
f. Core removal is another design concern. Discuss how several different coremaking processes might perform in the area of removal. What are some ways to assist or facilitate core removal?
Rubrics for Assessment
Requirement Outcome
Poor 00 Mark Fair
01 Mark Good 02 Mark Excellent 03 Mark Marks Obtained
Part ‘a’ Unable to describe geometric limitation associated with cores Able to mention geometric limitation associated with core and ways to overcome these limitation Briefly able to mention geometric limitation associated with core and ways to overcome these limitation Described in detail the geometric limitation associated with core and ways to overcome these limitations
Part ‘b’ Unable to discuss some of the limitations associated with core positioning and orientation. Able to discuss some of the limitations associated with core positioning and orientation with given considerations Briefly able to discuss some of the limitations associated with core positioning and orientation with given considerations Describe in detail the limitations associated with core positioning and orientation with given consideration
Part ‘c’ Unable to Discuss possible features to aid in
venting Able to discuss possible features to aid in venting Briefly able to discuss possible features to aid in venting Describe in detail possible features that aid in venting
Part ‘d’ Unable to discuss the variation of core behavior with different materials being cast Able to discuss the variation of core behavior with different materials being cast Briefly able to discuss the variation of core behavior with different materials being cast Describe in detail the variation of core behavior with different materials being cast
Part ‘e’ Unable to discuss several of the reasons cores may be made from a different material than the molding material used in the primary mold Able to discuss several of the reasons cores may be made from a different material than the molding material used in the primary mold Briefly able to discuss several of the reasons cores may be made from a different material than the molding material used in the primary mold Describe in detail the reasons cores may be made from a different material than the molding material used in the
primary mold
Part ‘f’ Unable to discuss on core
removal
Able to discuss core removal process.
Briefly able to discuss core removal and different processes that helps in core removal. Describe in detail the core removal and different processes that helps in core removal.
Total Marks =____________
Instructions:
1. While submitting work, students must submit work which has not been submitted, either partially or in full, before; and indicate clearly the presence of all material they have quoted using APA style referencing from other sources, including any diagrams, charts, tables or graphs.
2. The submitted work must be entirely their own work, except where otherwise indicated explicitly and must not have been copied/ plagiarized from the work of any other candidate (similarity index as calculated by Turnitin software must be less than 20%, where applicable).
3. All answers should be provided in student’s own wording. Directly copying from textbook or lecture notes is considered plagiarism and is not allowed.
4. For all assessment activities, students are not allowed to collaborate/ consult with each other or discuss or show contents of assessment with anyone including other students unless explicitly allowed by the respective teacher.
5. Misrepresentation of data for example submitting made-up information assessment is not allowed.
6. Late submission other than those beyond the control of the student
(excluding power breakdown and internet) may lead to serious consequences 7. The assignment carries 10% of the sessional assessment
8. The assignment should be submitted as a report with not more than 10 pages and using Calibri font with maximum of 14 font size
9. The assignment is divided into 70% marks for answering the question and 30% marks for report writing.
10. Students are instructed not to write/add the question paper in their report
11. Students should write their Name and Roll Number on the first page of the assignment on right side header only.
12. The last date for the submission is 13 August, 2020 by 4:00pm
13. Students need to upload the assignment in the Google Classroom. No Email
14. No re-submission of assignment will be allowed
15. The students will be required to submit the following undertaking at the beginning of assessment.
“I guarantee that this submission is based on my independent work without any unauthorized help. This activity is completed with full adherence to the “Ethics Policy” of the University. I understand that any breach would result in disciplinary action against me as per University rules.”
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