| Subject name (in Hungarian, in English) | Injection molding | |||
|
Injection molding
|
||||
| Neptun code | BMEGEPTBGE2 | |||
| Type | study unit with contact hours | |||
| Course types and number of hours (weekly / semester) | course type: | lecture (theory) | exercise | laboratory excercise |
| number of hours (weekly): | 1 | 0 | 1 | |
| nature (connected / stand-alone): | - | - | coupled | |
| Type of assessments (quality evaluation) | mid-term grade | |||
| ECTS | 3 | |||
| Subject coordinator | name: | Dr. Kovács József Gábor | ||
| post: | associate professor | |||
| contact: | kovacs@pt.bme.hu | |||
| Host organization | Department of Polymer Engineering | |||
| http://www.pt.bme.hu | ||||
| Course homepage | http://www.pt.bme.hu/tantargy.php?id=133&l=a | |||
| Course language | english | |||
| Primary curriculum type | mandatory | |||
| Direct prerequisites | Strong prerequisite | BMEGEPTBG01 | ||
| Weak prerequisite | ||||
| Parallel prerequisite | ||||
| Milestone prerequisite | at least obtained 0 ECTS | |||
| Excluding condition | BMEGEPTBG04, BMEGEPTAGE2, BMEGEPTAGA2 | |||
Aim
The aim of the course is to teach the students injection moulding technology, its equipment and auxiliary equipment, the effect of raw materials on technology, and the basics of product design and tool design for the production of injection moulded products. A further aim of the course is to present possible injection moulding defects and the ways to eliminate them. Also, to teach students the injection moulding features of reinforced and filled systems. Furthermore, the subject aims to teach students the basics of injection moulding simulation.
Learning outcomes
Competences that can be acquired by completing the course
Knowledge
The student is familiar with the commonly used terminology of injection moulding. The student can recall the important properties, physical and mechanical properties of thermoplastic polymers. The student can describe the pressure–specific volume–temperature (pvT) characteristics of polymers. The student can distinguish between the sub-processes and cycle elements of injection moulding. The student includes injection moulding equipment and auxiliary equipment in a system. The student knows the flow properties of polymer melts and the factors that affect it. The student is aware of the effects of flow and pressure conditions during injection moulding. The student has a basic knowledge of the design of injection moulded products. The student understands the structure of injection moulds and the basics of their design. The student can distinguish between the pressure and temperature conditions in injection moulds. The student knows the basics of injection moulding simulation and simulation programs.
Ability
The student applies theoretical knowledge to describe the injection moulding cycle, to represent it in a cycle diagram. The student interprets the viscosity of polymer melts and its changes under injection moulding conditions. The student can describe the injection moulding cycle with a pressure–specific volume–temperature (pvT) diagram. The student can analyse the injection moulding process to select the ideal parameters. The student can operate injection moulding machines (turning on/off, programs, filling, emptying, etc.). The student can selects the parameters of injection moulding (injection moulding, holding pressure, cooling etc.). The student can operate injection moulding auxiliary equipment in accordance with product needs. The student explores the roots of injection moulding defects using their theoretical knowledge. The student selects the appropriate injection molding machine for the production of a given product. The student selects the appropriate injection molding machine for the production of a given product. The student is able to express their thoughts in an ordered form orally and in writing—especially in the form of a drawing or sketch.
Attitude
The student is motivated to exőand their knowledge in the field of injection molding. The student expands their professional knowledge through continuous learning. The student is open to the use of information technology tools. The student seeks to learn about and routinely use the tools needed to solve problems in injection molding. The student supports the instructor by sharing their thoughts; if they refer to this data sheet, they will even get extra points for it. The students improves their knowledge for accurate and error-free problem-solving.
Independence and responsibility
The student collaborates with the instructor and their fellow students in lab practices. The student is committed to acquiring knowledge and working independently. The student feels responsible for keeping the machines and equipment undamaged during operation. The student supports the smooth running of laboratory practices with active participation and attention. The student makes the necessary settings on the injection molding machine.
Teaching methodology
During the lectures, the students get acquainted with the processes and equipment of injection molding, and during the laboratory exercises, they learn the settings and operation of injection molding machines and their peripherals. We place special emphasis on building harmony between theory and practice. In teaching, we take advantage of the opportunities provided by the Internet and students also receive background support in the form of videos and virtual lectures.
Support materials
Textbook
TA Osswald, L.-S. Turng, PJ Gramann: Injection molding handbook, Hanser Publishers, Munich, 2001 (ISBN 978-1569903186)
Robert A. Malloy: Plastic part design for injection molding, Hanser Publishers, Munich, 1994 (ISBN 9781569901298)
J. Shoemaker: Moldflow Design guide, Hanser Publishers, Munich, 2006 (ISBN 9781569904039)
Lecture notes
Online material
http://www.pt.bme.hu/tantargy.php?id=133&l=m
Validity of the course description
| Start of validity: | 2021. September 1. |
| End of validity: | 2027. July 15. |
General rules
The requirements of the signature are as follows: (1) at least 6 successful laboratory practices and (2) successful homework submissions. Student participation in the lab practices should reflect the previously defined knowledge, skills, attitudes, and autonomy competencies. The requirements for the final grade are successful semester examinations as well as submitted homework that meets the requirements.
Assessment methods
Detailed description of mid-term assessments
| Mid-term assessment No. 1 | ||
| Type: | summative assessment | |
| Number: | 1 | |
| Purpose, description: | The first mid-term test includes cycle diagrams. Students must create a cycle diagram based on the process parameters provided for the calculations. Students are required to make a pvT diagram and mark specific periods of the injection molding cycle. They must also calculate cooling time, remaining cooling time and the cycle time from the cycle diagrams. In addition, students must do test tasks on the sections on the cycle. | |
| Mid-term assessment No. 2 | ||
| Type: | summative assessment | |
| Number: | 1 | |
| Purpose, description: | The second mid-term test includes injection molding machines and injection molding auxiliary equipment. Students should answer questions about machine operations related to different machine types and demonstrate knowledge of the differences between each type. Students should be able to recognize the various injection molding defects and their underlying causes. Students must complete test tasks to verify the above-mentioned knowledge materials. | |
| Mid-term assessment No. 3 | ||
| Type: | formative assessment, simple | |
| Number: | 1 | |
| Purpose, description: | The requirement is the successful submission of a laboratory test report. The report should include cycle diagrams, a pvT diagram, and the approximation of pressure curves. The cycle time and cooling time must be calculated from the measured values. These measurements should be based on laboratory practice where participants optimize the injection molding cycle. The result of the measurement must be clearly stated and submitted in electronic format. | |
Detailed description of assessments performed during the examination period
The subject does not include assessment during the examination period.
The weight of mid-term assessments in signing or in final grading
| ID | Proportion |
|---|---|
| Mid-term assessment No. 1 | 40 % |
| Mid-term assessment No. 2 | 30 % |
| Mid-term assessment No. 3 | 30 % |
The weight of partial exams in grade
There is no exam belongs to the subject.
Determination of the grade
| Grade | ECTS | The grade expressed in percents |
|---|---|---|
| very good (5) | Excellent [A] | above 90 % |
| very good (5) | Very Good [B] | 85 % - 90 % |
| good (4) | Good [C] | 70 % - 85 % |
| satisfactory (3) | Satisfactory [D] | 55 % - 70 % |
| sufficient (2) | Pass [E] | 40 % - 55 % |
| insufficient (1) | Fail [F] | below 40 % |
The lower limit specified for each grade already belongs to that grade.
Attendance and participation requirements
The lack of the value means that there is no attendance requirement.
At least 80% of laboratory practices (rounded down) must be actively attended.
Special rules for improving, retaken and replacement
The special rules for improving, retaken and replacement shall be interpreted and applied in conjunction with the general rules of the CoS (TVSZ).
| Need mid-term assessment to invidually complete? | ||
| NO | ||
| Can the submitted and accepted partial performance assessments be resubmitted until the end of the replacement period in order to achieve better results? | ||
| NO | ||
| The way of retaking or improving a summary assessment for the first time: | ||
| each summative assessment can be retaken or improved | ||
| Is the retaking-improving of a summary assessment allowed, and if so, than which form: | ||
| one single, combined retake or grade-improving exam is possible for all assesments | ||
| Taking into account the previous result in case of improvement, retaken-improvement: | ||
| new result overrides previous result | ||
| The way of retaking or improving a partial assessment for the first time: | ||
| partial assesment(s) in this group can be improved or repeated once up to the end of the repeat period | ||
| Completion of unfinished laboratory exercises: | ||
| missed laboratory practices may be performed in the teaching term at pre-arranged appointment, non-mandatory | ||
| Repetition of laboratory exercises that performed incorrectly (eg.: mistake in documentation) | ||
| incorrectly performed laboratory practice (e.g. Incomplete/incorrect report) can be corrected by repeating the practice | ||
Study work required to complete the course
| Activity | hours / semester |
|---|---|
| participation in contact classes | 28 |
| preparation for laboratory practices | 14 |
| preparation for summary assessments | 32 |
| elaboration of a partial assessment task | 4 |
| additional time required to complete the subject | 12 |
| altogether | 90 |
Validity of subject requirements
| Start of validity: | 2021. September 1. |
| End of validity: | 2027. July 15. |
Primary course
The primary (main) course of the subject in which it is advertised and to which the competencies are related:
Mechanical engineering
Link to the purpose and (special) compensations of the Regulation KKK
This course aims to improve the following competencies defined in the Regulation KKK:
Knowledge
- Student has the comprehensive knowledge of machine, system and process design methods in the field of mechanical engineering.
Ability
- Student has the ability to apply an integrated knowledge of machinery, mechanical equipment, systems and processes, materials and technologies for mechanical engineering, and related electronics and information technology.
Attitude
- Student seeks to contribute to the development of new methods and tools in the field of engineering. A deepened sense of vocation.
Independence and responsibility
- Student takes responsibility for the sub-processes under student's management.
Prerequisites for completing the course
|
Knowledge type competencies
(a set of prior knowledge, the existence of which is not obligatory, but greatly facilitates the successful completion of the subject) |
none |
|
Ability type competencies
(a set of prior abilities and skills, the existence of which is not obligatory, but greatly contributes to the successful completion of the subject) |
none |