Subject · Metallurgical engineering
Tökmə istehsalının əsaslarıTopics
Topic plan
The subject's topics and the learning outcomes attached to each one.
1. Introduction. model making. elements of a model set. definition and definitions. classification of model set according to the nature of production. equipment of the model department of the foundry. types of wood and processing technology. chopping wood
LectureAn introduction to die-casting, model kit classification, definitions, and equipment and processing techniques used to make wood models
2. Construction and preparation of wooden models. detachable and integral models. badge and detachable parts. wooden packing boxes. drawing of the metal model. alloys for metal model. metal model construction. metal stuffing boxes. metal model plates. installation of the model
LectureDesign features of wooden and metal models, rules for making stuffing boxes and installation technology
3. Mold materials and mixtures, formation and origin of mold sands. classification of sands. mineral, grain and clay composition of sands. harmful impurities in sands. quartz, its state changes. zircon, chrome-magnesite sands. application of sands. the main properties of sands
LectureOrigin, classification, mineralogy of mold sands, effects of harmful impurities and properties of special types of sand (quartz, zircon, etc.)
4. Kaolinite, montmorillonite clays and hydromicas. mineral composition of clays. the main properties of clays. application of clays. classification and properties of binders. organic and inorganic binders. liquid glass. synthetic resins. auxiliary mold materials. special additives that give certain properties to the mold and filling mixture. anti-stick additives to the formulation. anti-burn paint and coatings
LectureCharacterization of clays, organic/inorganic binders (liquid glass, resins) and special additives (paints, coatings) used in molding
5. Synthetic resin-based filling mixtures. hot-setting and cold-hardening mixtures. physical-mechanical and technological properties of mold and filling mixtures. mechanical properties of mixtures.
LectureCharacteristics of modern synthetic resin mixtures (hot and cold curing), analysis of physico-mechanical indicators of mold materials
6. Preparation of disposable molds. molding by hand. casting arrangements and molding tools, their classification. the essence of the compaction of the mixture. choosing a compaction method.
LectureThe process of making disposable molds by hand, the tools used and the mechanisms for compacting the mixture.
7. Molding in two, three and several opoks. molding in inserts, cutting, turning belt, overhang, removable parts, false plaster. molding with a template. rotation and traction templates. molding with a skeleton model
LecturePreparation of molds with multiple holes and complex configuration (cutaway, disassembled parts), as well as molding with templates and skeleton models
8. Making molds by machine. machine compaction of mold mixtures. compaction rate indicator and its measurement. characterization of the distribution of compaction in the mold without a model and with a model. adjusting the degree of compaction of individual parts of the mold. combined application of various compaction methods.
LectureThe working principle of molding machines, determination of the degree of compaction by the machine, adjustment and combined compaction methods
9. Compaction by shaking, compaction by shaking and pressing. additional pressing. shaking-pressing. compaction of the mixture by sandblasting-pressing method. compacting the mold mixture with a sandblaster. vacuum and pulse molding methods
LectureDetailed analysis of various mechanical compaction techniques such as shake, press, sandblaster, vacuum and pulse molding
10. Preparation of fillings. classification of the construction of fillings. manual preparation of fillings in boxes. filling by machine. technology of making fillings in sandblasting and sandblasting, pressing and shaking machines. special preparation methods of fillings. preparation of fillings in heated and cold conditions. features of making fillings from liquid-hardening, liquid-glass, cold-hardening mixtures
LectureThe complete technological cycle of filling production: manual and machine preparation, thermal hardening and molding methods with special adhesives (cold hardening)
11. Drying of molds and fillings, assembly of molds and pouring of liquid metal into molds. drying modes of molds and fillings. chemical hardening, drying with the application of infrared rays and electric field. surface drying. selection of drying mode depending on the composition of the mold and filling mixture. methods of accelerating drying. the process of assembly of molds. seating and reinforcement of fillings in the mold, metal supports. collection control. report of alloy top half mold pressure. fixing and loading of molds. features of assembly of molds in flow lines and casting conveyor
LectureMethods of drying molds and fillings, the assembly (assembly) stage, the use of metal supports and the principles of preparing liquid metal for casting
12. Casting systems. types and elements of the casting system. the main provisions of filling metal into a mold. capture of resin and non-metallic compounds in the casting system. casting system reporting methods for castings made in various alloys. metal seating. the task, types, placement of additives in casting. additions report. the task of breathing and the choice of the place where it is placed in the casting. refrigerators, their function and types. refrigerator report. 5.5. pouring liquid metal into a mold. hand and drum type chalovs. features of metal casting from rotary and plug ladles. mechanized and automated casting
LectureHydrodynamic report of casting (slag catcher, feeder) systems, installation of breathers and coolers, operation of metal casting equipment
13. Casting and cleaning. thermal processing of castings, its purpose and types. effect of types of thermal treatment on the structure and properties of castings made of different alloys. cleaning up spills. methods of removing castings from the mold. removal of fillings from the casting. cutting the casting system and attachments
LectureRemoval of finished castings from the mold, cleaning (pressing), separation of cuts and determination of their subsequent thermal treatment mode
14. Designing technology of castings. design of casting technology. selection of the casting method. the condition of the casting in the mold, the model, the rules for choosing the effective separation surface of the mold and the filling. types of separation surface. determination of mechanical processing stakes and casting settlement. molding inclinations. selection of construction, borders and signs of fillings.
LectureComplex design of casting technology: determination of the separation surface, processing allowances, calculation of molding inclinations and settling rate.