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Laptop shell made by Magnesium Die Casting Company

Τα κράματα μαγνησίου είναι γνωστά ως τα ελαφρύτερα δομικά κράματα [1].

Είναι κατασκευασμένα από μαγνήσιο, το ελαφρύτερο δομικό μέταλλο, αναμεμειγμένο με άλλα μεταλλικά στοιχεία για τη βελτίωση των φυσικών ιδιοτήτων. Αυτά τα στοιχεία περιλαμβάνουν μαγγάνιο, αλουμίνιο, ψευδάργυρο, πυρίτιο, χαλκό, ζιρκόνιο και μέταλλα σπάνιων γαιών [2].

Μερικές από τις ευνοϊκές ιδιότητες του μαγνησίου περιλαμβάνουν το χαμηλό ειδικό βάρος και την υψηλή αναλογία αντοχής προς βάρος. Ως αποτέλεσμα, το υλικό προσφέρεται σε μια σειρά εφαρμογών αυτοκινήτων, αεροδιαστημικής, βιομηχανικής, ηλεκτρονικής, βιοϊατρικής και εμπορικής χρήσης

Ιδιότητες και πλεονεκτήματα πλεονεκτήματα   Εφαρμογές

Τα κράματα μαγνησίου καλύπτουν ένα ευρύ φάσμα εφαρμογών, από εφαρμογές αυτοκινήτων και αεροδιαστημικής έως ηλεκτρονικές και βιοϊατρικές χρήσεις.

Δομικές εφαρμογές Η αυτοκινητοβιομηχανία, η αεροδιαστημική, η βιομηχανία και οι εμπορικές εφαρμογές είναι παραδείγματα δομικών εφαρμογών. Το πλεονέκτημα των κραμάτων μαγνησίου που χρησιμοποιούνται σε τέτοιες εφαρμογές είναι το μικρό τους βάρος, η υψηλή αναλογία αντοχής προς βάρος, η υψηλή αναλογία ακαμψίας προς βάρος, η χυτευσιμότητα, η μηχανική επεξεργασία και η μεγάλη απόσβεση [4].

Αυτοκίνητο: βραχίονες στήριξης για φρένα και συμπλέκτη, περίβλημα για κιβώτιο ταχυτήτων

Αεροδιαστημική: τροχοί προσγείωσης, εξαρτήματα ρότορα ελικοπτέρου, περιβλήματα κιβωτίου ταχυτήτων

Βιομηχανικός: μηχανήματα λειτουργίας υψηλής ταχύτητας, όπως μηχανήματα κλωστοϋφαντουργίας

Εμπορικός: αποσκευές, εργαλεία χειρός, περιβλήματα υπολογιστών, σκάλες

Ηλεκτρονικές εφαρμογές Οι ηλεκτρονικές εφαρμογές περιλαμβάνουν ηλεκτρονική συσκευασία, βραχίονες σκληρού δίσκου, κινητά τηλέφωνα και φορητές συσκευές πολυμέσων. Τα κράματα μαγνησίου χρησιμοποιούνται αντί για πλαστικά λόγω του μικρού βάρους, της αντοχής και της αντοχής τους. Είναι επίσης σχετικά καλύτερα για τη διάχυση θερμότητας και την προστασία από ηλεκτρομαγνητικές παρεμβολές και παρεμβολές ραδιοσυχνοτήτων [5].

Ιατρικές εφαρμογές Ο φορητός ιατρικός εξοπλισμός και τα αναπηρικά αμαξίδια που απαιτούν ελαφρύ υλικό κάνουν καλή χρήση των κραμάτων μαγνησίου. Επίσης, τα καρδιαγγειακά στεντ και οι ορθοπεδικές συσκευές είναι πιθανές εφαρμογές ορισμένων κραμάτων μαγνησίου λόγω της βιοσυμβατότητας και της βιοαπορροφητικότητας του μαγνησίου [4].

Laptop shell made by Magnesium Die Casting Company

Magnesium alloys have excellent corrosion resistance. As mentioned earlier, magnesium is widely used in the manufacture of mobile phones, laptops, cameras and other electronic components due to its light weight and good mechanical and electrical properties. Magnesium alloys feel a bit like plastic. Rest assured, there will be plenty of other PC makers coming out with Blue Magnesium laptops. Moving to magnesium alloys makes you more concerned about weight and feel. Die-cast magnesium parts generally outperform plastic: stronger and more wear-resistant than plastic. Excellent stiffness like plastic usually requires significant reinforcement.

Process analysis: Laptop case made of magnesium alloy ME20. This part has a complex structure and high dimensional accuracy requirements, so it is integrally milled from a magnesium alloy plate. Magnesium machining is very different from traditional aluminum alloy machining in terms of tool selection, cutting parameter selection, cutting plan selection, cutting fluid selection, anti-corrosion measures, and chip treatment.

 

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