891328 Wood cutting, milling, moulding

Type
Lecture
Semester hours
2
Lecturer (assistant)
Müller, Ulrich , Mautner, Andreas
Organisation
Offered in
Wintersemester 2024/25
Languages of instruction
Deutsch
Content

Part Müller:
In addition to material-independent explanations of machining and shaping processes, manufacturing processes relevant to wood technology are covered. In detail these are: Shaping by 1) primary forming, 2) shaping by forming, 3) cutting and machining shaping, 4) shaping by joining, 5) shaping by coating processes, 6) generative shaping. In the case of forming processes in particular, processes outside of wood and natural fiber technology are deliberately included. For wood and natural fiber technology, manufacturing processes for primary forming (lamination technologies, press agglomeration, general press technology), forming (densification, embossing, bending, upsetting, etc.), machining shaping using tools and media, joining (layer gluing, etc.), shaping by coating and generative technologies are discussed. Possible machining and shaping technologies for wood and natural fiber materials are examined from a technological and materials science perspective.
New manufacturing and shaping processes have the task of joining different materials and components. The production of so-called hybrid materials poses a particular challenge for joining and bonding technology.
As in other sectors, generative manufacturing techniques are also becoming increasingly important for wood technology. Finally, additive manufacturing processes for wood technology are discussed.
Part Mautner:
This part of the lecture deals with manufacturing processes for the production of molded parts from bio-based and synthetic polymer materials. Among other things, standard processes such as injection molding and extrusion are discussed, but also current processes such as various 3D printing processes. In addition, specific properties of polymers, especially biopolymers, are discussed with regard to their influence on processing and shaping, and the characterization of these properties is outlined.
- Introduction: Definitions of terms; reasons for use, overview of the market situation
- (Biotechnological) processes for the production of bio-based polymer materials or bio-based monomers as starting materials: fermentation raw materials and their availability, production of selected polymers (PHAs, PLA, PBS, biopolyethylene, ...), biodegradability and disposal
- Processing and shaping: shaping (in particular thermoplastic shaping processes); examples of practical processing methods
- Characterization of material properties: structures and microstructure; mechanical properties, polymer specifics and associated analysis and measurement methods
- Current shaping processes for polymers
Previous knowledge expected

Basic scientific and general technological knowledge. Mechanical technology of wood, wood physics and other relevant prior knowledge advantageous
Objective (expected results of study and acquired competences)

Part Müller:
Students have a complete and material-independent picture of industrial machining and shaping processes. Sustainable materials are dealt with in particular. Students can differentiate between subtractive and additive manufacturing processes and are familiar with all groups of manufacturing and shaping processes according to DIN 8580 ff. Known processes and new processes presented in the lecture can be assigned to the 6 main groups of manufacturing processes. Students can assess the various process technologies for the industrial production of semi-finished products and products in terms of resource efficiency, sustainability and cost-effectiveness.
Part Mautner:
Students know the most important characteristics and properties of polymers and their influence on processing and shaping. Furthermore, they can differentiate between the terms “bio-based”, “biodegradable” and “compostable” and classify materials accordingly. They can name the most important bio-based and biodegradable plastics and describe their manufacturing processes and properties. They are also able to critically assess current developments and discussions on bio-based materials. They are familiar with the main processing methods and methods for assessing the material properties of polymer materials. Current methods for shaping polymer materials can be described.
You can find more details like the schedule or information about exams on the course-page in BOKUonline.