Saina ASTM A681 D7 Meafaigaluega Pa uamea Faumea ma Fa'atau
D7 Tool Steel o se kaponi maualuga, maualuga chromium ea fa'ama'a'a meafaigaluega u'amea ma sili ona tete'e ofu.
O lenei teteʻe faʻaofuofu e mafua ona o le maualuga o le carbon ma le vanadium content, lea e fausia ai le tele o vaega vanadium carbide carbide i totonu o le uamea, ma le maaa e tutusa ma le 80 i le 85 Rockwell C.
O lenei meatotino e mafai ai e le D7 meafaigaluega uamea mataalia e tetee atu ai i ofu pe a fa'ase'e fa'afeso'ota'i ma isi u'amea ma fa'afeso'ota'i ma matutu ma susū slurries malō ma'a'a e pei o le oneone, fana fa'asalalau fa'asalalau ma keramika.
D7 meafaigaluega uʻamea e faʻaaogaina lautele, aemaise lava e aofia ai piliki linings linings, briquetting molds, fana blasting meafaigaluega linings, sima extrusion ma faia meafaigaluega, paʻu meafaigaluega compaction, ata loloto oti, mafolafola rollers ma masini meafaigaluega taiala ala, ma isi.
I nei faʻataʻitaʻiga faʻataʻitaʻiga, o le faʻaogaina o le teteʻe, faigata ma le faigata o le D7 meafaigaluega uamea e faʻaaogaina atoatoa.
I tulaga o togafitiga vevela, o le faʻamaʻaina o le D7 uamea meafaigaluega e mana'omia ni laasaga e pei o le mua'i fa'avevelaina, austenitisation (maualuga le vevela) ma le fa'afefe.
O le vevela masani masani e 300°F (149°C) mo le maualuga o le tete'e o ofu. E le gata i lea, mo le maualuga o le faigata, e mafai foi ona faia le faʻafefe faʻalua, taofi i le vevela i luga aʻe o le 950°F (510°C) mo le lua itula ona taofi lea mo le isi lua itula.
I tulaga o le tipiina o galuega, o le tipiina o le gaosiga o le D7 meafaigaluega uamea e tusa ma le 30-35% o le 1% carbon steel. O lona uiga e manaʻomia meafaigaluega ma metotia talafeagai i le faagasologa o masini e faʻamautinoa ai le lelei ma le lelei o masini.
I se tulaga lautele, D7 meafaigaluega uʻamea o se uʻamea faʻaofuofu faʻasaʻo maualuga e talafeagai mo faʻataʻitaʻiga faʻaoga eseese e manaʻomia e tatalia le ofuina ma le aʻafiaga.
O lona ofuina lelei o le tete'e, ma'a'a ma le faigata, fa'apea fo'i ma le lelei o le tipiina, fa'aaogaina lautele i fale gaosi oloa.
D7 meafaigaluega uʻamea o se maualuga maualuga-carbon, maualuga-chromium uʻamea meafaigaluega uʻamea o loʻo i ai se tulaga taua i le gaosiga o fale gaosi oloa mo lona tulaga lelei faaletino ma vailaau. O lenei tusiga e faʻamoemoe e faʻamatalaina faʻamatalaga o le D7 meafaigaluega uamea ma ona faʻaoga autu.
Fa'ailoga autu ole D7 Tool Steel
Malosi maualuga ma le malosi o le ofuina: A maeʻa togafitiga vevela lelei, D7 sila e mafai ona oʻo atu i le maaa maualuga, ma tuʻuina atu ai le faʻaofuofu sili ona lelei.
O lenei uiga e faiaD7 uamealelei i totonu o siosiomaga faigaluega e faʻatatau i uta maualuga ma feteʻenaʻiga maualuga.
A'afiaga tete'e: Ona o le maualuga o le maaa ma le malosi lelei, o le D7 meafaigaluega uamea e lelei le teteʻeina o le aʻafiaga ma e mafai ona faʻatumauina le faʻamaoni faʻavae pe a aʻafia e malosiaga mai fafo.
Tete'e a'e: D7 meafaigaluega uamea o loʻo i ai se aofaʻi o chromium, lea e mafai ai ona faʻamautu lelei ma tumau i nisi o siosiomaga pala.
O a eseesega i le va o le D7 ma le D2 meafaigaluega uamea?
D7 meafaigaluega uʻamea ma D2 meafaigaluega uamea (faʻapitoa foi o le Cr12MoV) o uʻamea meafaigaluega eseese e lua, taʻitasi ma meatotino tulaga ese ma talosaga.
D7 Tool Steel o se kaponi maualuga, maualuga chromium ea fa'ama'a'a meafaigaluega u'amea ma sili ona tete'e ofu. O lona maualuga o le kaponi ma le vanadium e maua ai le tele o vaega o le vanadium carbide i totonu o le sila, ma le maaa e tutusa ma le 80 i le 85 Rockwell C.
O le mea lea, e tetee lelei le ofuina e mafua mai i fesoʻotaʻiga faʻafefe ma isi uʻamea ma faʻamago ma susu slurry faʻafesoʻotaʻi ma vaega abrasive malo e pei o le oneone, fana faʻasalalau faʻasalalau ma keramika. O le mea lea e mafai ai e le D7 meafaigaluega uamea talafeagai mo le tele o talosaga, e aofia ai piliki linings linings, briquetting mate, fana blasting meafaigaluega linings, sima extrusion ma fausia meafaigaluega, pa'u compaction mea, ata loloto oti, fa'afolafola rollers ma masini meafaigaluega taiala alavai.
D2 meafaigaluega uamea (Cr12MoV) o se maualuga-carbon, maualuga-chromium meafaigaluega uamea ma sili ona maaa, ofuina teteʻe, corrosion tetee ma deformation tetee. O lona anotusi carbon e maualuga e pei o le 1.40% -1.60%, lea e faʻaleleia ai lona maaa ma faʻafefeteina.
I le taimi lava e tasi, o loʻo i ai foi i le sila le maualuga o le chromium ma le molybdenum, lea e mafai ona faʻaleleia atili ai lona faʻafefeteina.
D2 meafaigaluega uʻamea e mafai ona maua mea sili ona lelei ma le maaa e ala i togafitiga vevela e pei o le tineia ma tempering, ma e lelei machinability e faʻafetaui manaoga machining eseese. O nei mea totino e faʻaaogaina ai le uamea meafaigaluega D2 i le gaosiga o vaega maualuga e pei o molds, meafaigaluega tipi ma paʻu paʻu.
D7 Meafaigaluega uamea lapotopoto pa
Tulaga fa'ama'i(vaega vaega)(wt.%) o le u'amea meafaigaluega D7
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) | V(%) |
| 2.15～2.50 | 0.10～0.60 | 0.10～0.60 | ≤0.030 | ≤0.030 | 11.5～13.5 | 0.70～1.20 | 3.80–4.40 |
ASTM A681-US
FED QQ-T-570-US
SAE J437-US
SAE J438-US
UNS T30407-US
AISI D7 Tool Steel-US
Filifiliga Fa'alili o D7
1 EAF: Ogaumu Fa'a Eletise
2 EAF+LF+VD: Fa'amamā-fa'aliusuavai ma fa'amama fa'amama
3 EAF+ESR: Fa'ameamea Electro Slag
4 EAF+PESR: siosiomaga puipuia Electro Slag Remelting
5 VIM+PESR: Fa'aliusuavai le fa'aosoina o masini
Fausia Filifiliga o D7 Uamea
1 Fa'asologa vevela
2 Fa'amea vevela: Electro-hydraulic; High-speed-hydraulic; Suau'u-hydraulic; Fa'asa'o lelei
Filifiliga tau-vevela o d7 uamea
1 +A: Fa'amauina (tumu/mulu/spheroidizing)
2 +N: Fa'atonu
3 + NT: Faʻasalaina ma faʻafefe
4 + QT: Tinei ma fa'afefe (vai/suau'u)
Filifiliga Suface o Meafaigaluega Uamea
1 Laupapauli
2 Fa'aeleele: Malamalama ae talatala ; Le sa'o
3 Masini mo ipu: Malamalama ma saʻo; Laititi liu ma'ila
4 Peele/Liu: Malamalama ma sa'o; Laititi liu ma'ila
5 Faiila: Matua Malamalama ma saʻo le telē; Le liu ma'ila
MESINIA MESINIA O UAmea FUAFUATA D7
| Tuuina atu Rp0.2 (MPa) | Tensile Rm (MPa) | A'afiaga KV/Ku (J) | Fa'aumiumi A (%) | Fa'aiti'itia vaega fa'asaga i luga o gau Z (%) | Tulaga Fa'a-vevela | Malosi ole Brinell (HBW) |
| 984 (≥) | 682 (≥) | 41 | 31 | 23 | Fofo ma le matua, Annealing, Ausaging, Q + T, ma isi | 322 |
| Oloa | Diamita(mm) | Umi(mm) |
| Pa taai | 10~95 | 3000~5700 |
| Pa Fa'atau | 95~440 | 3000~5700 |
| Pili | 130×130,140×140,150×150,160×160 | 7000Max |
