632-0806/02 – Metalcasting (S)
| Gurantor department | Department of Materials and Technologies for Vehicles | Credits | 5 |
| Subject guarantor | doc. Ing. Jiří Hampl, Ph.D. | Subject version guarantor | doc. Ing. Jiří Hampl, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 2 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2004/2005 | Year of cancellation | 2013/2014 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Student will be able:
-to describe basic types of foundry moulds and their use for casting manufacture;
-to know principles of using different types of moulding mixtures, their properties and
application for particular casting kinds;
-to know a process of designing and calculating the gating systems;
-to explain principles of positive and negative directional solidification;
-to solve static and dynamic uplift pressure of moulds and cores;
-to explain the formation of the most important casting defects;
-to know principles of casting manufacturing methods using in particular the increased
pressure on metal surface, of shell moulding, and investment casting.
Teaching methods
Lectures
Seminars
Individual consultations
Tutorials
Experimental work in labs
Project work
Summary
Lectures:
1. Foundry mould-core, sand mixtures of the I. to IV. Generation
2. Gating of castings, calculation of gatings,
3. Upward pressure of mould and of cores, crystallization and solidification
of castings.
4. Changes in volume of metal at solidification and elimination of the thermal
nodal sites in casting
5. Heat transmission between casting and mould
6. Defects in castings, running property of liquid metal, condensing zone of
water and its consequences on the surface defects
7. Defects due to stress (overflows, scabs), penetration of liquid metal into
mould, surface roughness of castings.
8. Failed compactness of castings, the mechanism of initiation of fissures and
cracks. Foundry stress
9. Fabrication of castings by application of elevated pressure at the liquid-
metal surface
10. Specific methods of fabrication of castings, vacuum aspiration, method of
pouring precise castings
11. Steels for castings. Carbon and alloyed steels.
12. Graphitizing alloys of iron, melting routes
13. Design of castings, principles of optimum design
14. Nodular cast iron, metallurgy,
Compulsory literature:
Recommended literature:
rticles in professional journals, papers of conferences, research reports, theses.
Way of continuous check of knowledge in the course of semester
Individual tasks will be awarded with a weekly schedule. The tasks will work during the exercises. Students of combined study will send their analysis of literature through e-mail. There is a 3 points penalty for each week of delay of tasks checking in after the deadline.
E-learning
http://www.fmmi.vsb.cz/cs/okruhy/studium-a-vyuka/podklady-ke-studiu
Other requirements
There are not additional requirements on students in the field of this subject.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1st Foundry mold-core, forming a mixture of first-IV.generace.
2nd Silt casting system, the calculation of gating, and pressure vacuum system
3rd Lift molds and cores, solidification and crystallization. Homogeneous and heterogeneous nucleation, primary crystallization, segregation (odmíšeniny) and segregations.
4th Volume changes of the metal during solidification and disposal of heat units in a cast
5th Heat transfer between the casting and form
6th Casting defects, fluidity of metals, water condensation zone and its implications for surface defects.
7th Defects of the tension (výronky, Clean finish), penetration of metal into a mold, casting roughness. Exogenous and endogenous bubble, quills.
8th Violation of related castings, the mechanism of cracks and fissures. Foundry stress.
9th Casting effect of increased pressure on the metal surface.
10th Spec method of casting, vacuum suction, natuhávání with discharge, methods for casting precision castings.
11th Cast steel. Carbon and alloy steel. Metallurgy production.
12th Graphitizing alloy of iron metallurgy production.
13th Design considerations, the principle of optimal design.
14th Nodular cast iron, metallurgy, nonferrous metals. Criteria for evaluation of iron,
structure diagrams.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
Předmět neobsahuje žádné hodnocení.