Course objectives:
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The subject provides basic knowledge about the properties of metal melts, their flows and crystallization. It comprises the process occuring on the interface of fluid metal and mould and processes of solidification and cooling of cast.
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Requirements on student
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Conditions for credit: completion of essay.
Exam: Completion of written part of test and successful completion of oral part of exam.
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Content
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Model sof metal casts, basic properties.
Surface tension, viskosity, fluidity.
The flow of metal casts in channels of cast forms and processes between the fluid metal and form.
The thermal field of cast and form, gas mode of form.
Crystallization of metals and alloys.
Solidification of cast, shrinkage, risers.
Cooling of cast, internal tensions aund faults.
Measures to minimize the faults of casts.
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Activities
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Fields of study
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Guarantors and lecturers
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Guarantors:
Doc. Ing. Josef Odehnal, Ph.D. (100%),
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Lecturer:
Doc. Ing. Josef Odehnal, Ph.D. (50%),
Ing. Filip Votava (100%),
Ing. Filip Votava (50%),
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Tutorial lecturer:
Doc. Ing. Josef Odehnal, Ph.D. (50%),
Ing. Filip Votava (100%),
Ing. Filip Votava (50%),
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Literature
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Time requirements
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All forms of study
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Activities
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Time requirements for activity [h]
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Preparation for an examination (30-60)
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40
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Practical training (number of hours)
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26
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Contact hours
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39
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Total
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105
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Prerequisites
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Knowledge - students are expected to possess the following knowledge before the course commences to finish it successfully: |
Describe moulding, risering and casting procedures.
Describe the mechanism of heat transfer between melt and the mould.
Causes of changes in the melt flow in the gating system and the mould cavity.
Fundamentals of diffusion in the melt and in solidified material.
Characteristics of defects in castings.
Characteristics of materials used for castings in the power industry and other fields. |
Skills - students are expected to possess the following skills before the course commences to finish it successfully: |
Design pattern allowances.
Design drafts and moulding methods for casting a simple part.
Give interpretation of defects in a casting.
Prepare a technical report. |
Competences - students are expected to possess the following competences before the course commences to finish it successfully: |
N/A |
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Learning outcomes
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Knowledge - knowledge resulting from the course: |
Describe the mechanism of solidification and cooling of a casting.
Improve the solidification of a casting by altering the pattern shape.
Describe the mechanism of micro and macro segregation.
Know the means of adjusting the flow of melt in the gating system.
Describe the control of gases in a mould.
Know the mechanism of formation of hot and cold cracks.
Assess the causes of defects and develop measures to eliminate them. |
Skills - skills resulting from the course: |
Design the gating system and risers for cast parts of simple shapes.
Review the possibility of manufacturing a particular alloy with available equipment.
Assess melting technology with respect to the quality of production.
Adjust the design of a cast part to meet the requirements for pouring and quality. |
Competences - competences resulting from the course: |
N/A |
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Assessment methods
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Knowledge - knowledge achieved by taking this course are verified by the following means: |
Combined exam |
Test |
Skills - skills achieved by taking this course are verified by the following means: |
Skills demonstration during practicum |
Individual presentation at a seminar |
Competences - competence achieved by taking this course are verified by the following means: |
Oral exam |
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Teaching methods
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Knowledge - the following training methods are used to achieve the required knowledge: |
Lecture supplemented with a discussion |
Practicum |
Interactive lecture |
Field trip |
Discussion |
Multimedia supported teaching |
Skills - the following training methods are used to achieve the required skills: |
Laboratory work |
Task-based study method |
Field trip |
Practicum |
Multimedia supported teaching |
Competences - the following training methods are used to achieve the required competences: |
Lecture |
Multimedia supported teaching |
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