diplomsko delo
Povzetek
Trajni magneti, predvsem magneti Nd-Fe-B so danes, zaradi svojih magnetnih lastnosti in
cene, zelo razširjeni in so nadomestili ostale, šibkejše magnete.
V diplomskem delu smo raziskovali vpliv velikosti delcev magnetnega prahu na končne
lastnosti materiala in, ali kombinacija dveh prahov z delci različnih velkosti enakega tipa,
pripomore k višjim gostotam in posledično višjim magnetnim lastnostim.
Pripravili smo tri različne granulate oz. tri enake granulate iz prahov z delci različnih
velikosti. Za izdelavo plastomagnetov smo uporabili magnetni prah, aditiv in polimer. Najprej
smo pripravili mešanico magnetnega prahu in aditiva, nato pa s procesom ekstruzije izdelali
granulat. Na stroju za injekcijsko brizganje smo izdelali vzorce plastomagnetov Nd 2 Fe 14 B in
jih okarakterizirali. Določili smo masni pretok, gostoto, magnetne lastnosti in upogibno
trdnost. Opazovali smo procesibilnost materialov med izdelavo in primerjali meritve med
seboj.
Ključne besede
trajni magneti;plastomagneti;Nd 2 Fe 14 B;ekstruzija;injekcijsko brizganje;PPS;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2020 |
Tipologija: |
2.11 - Diplomsko delo |
Organizacija: |
UL NTF - Naravoslovnotehniška fakulteta |
Založnik: |
[S. Sedej] |
UDK: |
669 |
COBISS: |
31192323
|
Št. ogledov: |
429 |
Št. prenosov: |
119 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
ǂthe ǂinfluence of metal magnetic particle size on the injection moulding process and final product characteristics |
Sekundarni povzetek: |
Permanent magnets, particulary magnets Nd-Fe-B, due to their magnetic properties and their
price widely spread around thw world and have therefore replaced other, weaker magnets in
almost all fields.
Research described in this thesis focused on how the particle size of magnetic powder affects
the final properties of a compound and whether the combination of two different sizes of the
same magnetic powder contributes towards better density and magnetic properties of a
compound.
Three different cpompounds were prepared – three materials with the same chemical
composition but with different powder-particle size. First, a premix of magnetic powder and
additive was mixed, then the compound was prepared using extrusion process. Samples
Nd 2 Fe 14 B compound for various measurements were prepared on the injection molding
machine. Several measurements and analysis were carried out: melt flow rate, density
measurements, hysteresis loop measurements and determination of magnetic properties,
performance of 3-point bending test and melt-flow measurement.
Processability of the compound during the manufacturing was observed and measurements
results were compared between each other. |
Sekundarne ključne besede: |
permanent magnets;bonded magnets;Nd 2 Fe 14 B;extrusion;injection moulding;PPS; |
Vrsta dela (COBISS): |
Diplomsko delo/naloga |
Študijski program: |
0 |
Konec prepovedi (OpenAIRE): |
1970-01-01 |
Komentar na gradivo: |
Univ. v Ljubljani, Naravoslovnotehniška fak., Odd. za materiale in metalurgijo |
Strani: |
45 f. |
ID: |
12056017 |