Kina ASTM A681 D7 Mea Paahana Steel Bar Manufacturer and Supplier
ʻO D7 Mea Hana kila he kalapona kiʻekiʻe, kiʻekiʻe chromium ea paʻakikī kila kila me ke kūpaʻa maikaʻi loa.
ʻO ke kūpaʻa ʻana o kēia ʻaʻahu ma muli o kāna ʻano kalapona kiʻekiʻe a me vanadium, ka mea i hana i ka nui o nā ʻāpana vanadium carbide paʻakikī i ke kila, me ka paʻakikī e like me 80 a 85 Rockwell C.
Hoʻohana ʻia kēia waiwai i ke kila mea hana D7 e pale aku ai i ka ʻaʻahu i ka wā e hoʻoheheʻe ai me nā kila ʻē aʻe a me ka hoʻopili ʻana me nā slurries maloʻo a me ka pulu o nā ʻāpana abrasive paʻakikī e like me ke one, ka pā pahū pana a me nā seramika.
Hoʻohana nui ʻia ke kila kila D7, ʻo ia hoʻi me nā linings mold brick, briquetting molds, shot blasting lako linings, ceramic extrusion a me nā mea hana hana, pauka compaction tool, deep drawing dies, flattening rollers and machine tool guide rails, etc.
I kēia mau hiʻohiʻona noi, ua hoʻohana piha ʻia ke kūpaʻa ʻaʻahu, ka paʻakikī a me ka paʻakikī o ke kila kila D7.
Ma ke ʻano o ka mālama ʻana i ka wela, ke kaʻina hana paʻakikī o D7 kila kila pono nā ʻanuʻu e like me ka preheating, austenitization (kiʻekiʻe wela) a me ka hoʻoulu ʻana.
ʻO 300°F (149°C) ka mahana wela maʻamau no ka pale ʻana i ka ʻaʻahu kiʻekiʻe. Eia kekahi, no ka ʻoi loa o ka paʻakikī, hiki ke hoʻokō ʻia ka hoʻoheheʻe pālua, e paʻa ana ma kahi mahana ma luna o 950°F (510°C) no ʻelua hola a laila paʻa no ʻelua mau hola.
Ma keʻano o kaʻokiʻana i ka hana,ʻo ka hanaʻokiʻoki o D7 mea hana kila ma kahi o 30-35% o 1% carbon steel. ʻO ia ke kumu e pono ai nā mea hana a me nā ʻenehana kūpono i ka wā o ka mīkini hana e hōʻoia i ka maikaʻi a me ka maikaʻi o ka mīkini.
Ma keʻano laulā, ʻo D7 mea hana kila he mea hana kiʻekiʻe e kūpono i nā hiʻohiʻona noi e pono ai ke kū i ka lole a me ka hopena.
ʻO kona kūpaʻa ʻaʻahu maikaʻi loa, paʻakikī a paʻakikī, a me ke kaʻina hana ʻoki maikaʻi, hoʻohana nui ʻia i ka hana ʻoihana.
ʻO ke kila kila D7 he kila kiʻekiʻe kiʻekiʻe, kiʻekiʻe-chromium alloy mea paahana e noho ana i kahi kūlana koʻikoʻi i ka hana ʻoihana no kāna mau waiwai kino a me kemika. Ke manaʻo nei kēia ʻatikala e kikoʻī i nā kikoʻī o ke kila mea hana D7 a me kāna mau hoʻohana nui.
ʻO nā hiʻohiʻona nui o D7 Tool Steel
ʻO ka paʻakikī kiʻekiʻe a me ke kūpaʻa ʻaʻahu ikaika: Ma hope o ka hoʻomaʻamaʻa wela kūpono, hiki i ke kila D7 ke hiki i ka paʻakikī kiʻekiʻe loa, e hāʻawi ana i ke kūpaʻa maikaʻi loa.
Hana kēia ʻanoD7 kilamaikaʻi loa i nā wahi hana e pili ana i nā ukana kiʻekiʻe a me ka wikiwiki wikiwiki.
Ke kū'ē i ka hopena: Ma muli o kona paʻakikī kiʻekiʻe a me ka paʻakikī maikaʻi, ʻoi aku ka maikaʻi o ka pale ʻana o ka mea hana D7 a hiki iā ia ke mālama i ka kūpaʻa i ka wā i hoʻopilikia ʻia e nā mana o waho.
ʻO ke kūpaʻa ʻino: ʻO ke kila kila D7 kekahi nui o ka chromium, hiki iā ia ke mālama i ka paʻa maikaʻi a me ka lōʻihi i kekahi mau wahi corrosive.
He aha nā ʻokoʻa ma waena o D7 a me D2 mea hana kila?
ʻO ke kila kila D7 a me ke kila D2 (ʻike ʻia ʻo Cr12MoV) ʻelua mau kila mea hana like ʻole, kēlā me kēia me nā waiwai a me nā noi.
ʻO D7 Mea Hana kila he kalapona kiʻekiʻe, kiʻekiʻe chromium ea paʻakikī kila kila me ke kūpaʻa maikaʻi loa. Loaʻa kona ʻano kalapona kiʻekiʻe a me ka vanadium i ka nui o nā ʻāpana kalapona vanadium paʻakikī i ke kila, me ka paʻakikī e like me 80 a 85 Rockwell C.
No laila, pale maikaʻi ʻo ia i ka ʻaʻahu ma muli o ka hoʻopā ʻana me nā kila ʻē aʻe a me ka hoʻopili ʻana i ka slurry maloʻo a pulu me nā ʻāpana abrasive paʻakikī e like me ke one, ka pā pahū pana a me nā seramika. ʻO kēia ka mea e kūpono ai ke kila kila D7 no nā ʻano noi like ʻole, me nā linings mold mold, briquetting dies, shot blasting tool linings, ceramic extrusion and forming tools, powder compaction tools, deep drawing dies, flattening rollers and machine tool guide rails.
ʻO ke kila kila D2 (Cr12MoV) he kila kila kiʻekiʻe, kiʻekiʻe-chromium me ka paʻakikī maikaʻi loa, ke kūpaʻa ʻana, ka pale ʻana i ka corrosion a me ke kūpaʻa deformation. ʻO kona kiʻekiʻe kalapona he kiʻekiʻe e like me 1.40% -1.60%, kahi e hoʻomaikaʻi ai i kona paʻakikī a me ke kūpaʻa.
I ka manawa like, he kiʻekiʻe ka chromium a me ka molybdenum i ke kila, hiki ke hoʻomaikaʻi maikaʻi i kona kūpaʻa corrosion.
Hiki i ke kila kila D2 ke loaʻa nā waiwai mechanical maikaʻi a me ka paʻakikī ma o nā kaʻina hana wela e like me ke kinai ʻana a me ka hoʻoulu ʻana, a loaʻa iā ia ka machinability maikaʻi e hoʻokō i nā koi machining. Hana kēia mau waiwai i ke kila kila D2 i hoʻohana nui ʻia i ka hana ʻana i nā ʻāpana kiʻekiʻe e like me nā mold, nā mea hana ʻoki a me nā make forging.
D7 Mea hana kila poepoe pae
ʻO ka haku mele (haʻina nui)(wt.%) o ke kila mea hana 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 Mea Paahana Steel-US
Koho hoohehee o D7
1 EAF: Uhi Ahi Uila
2 EAF+LF+VD: Ka hoʻoheheʻe ʻia a me ka hoʻoheheʻe ʻana i ka hau
3 EAF+ESR: Hoʻoheheʻe Electro Slag
4 EAF+PESR: ka lewa pale Electro Slag Remelting
5 VIM+PESR: Hoʻoheheʻe ʻia ka hoʻoheheʻe ʻana
Hoʻokumu Koho o D7 Steel
1 Kaʻina kaʻa wela
2 Wehewela Forging: Electro-hydraulic; High-speed-hydraulic; Aila-hydraulic; ʻO ka hana pololei
Koho Lapaʻau wela o d7 kila
1 +A: Hoʻohui ʻia (piha / palupalu / spheroidizing)
2 +N: Hana maʻamau
3 + NT: Hoʻomaʻamaʻa ʻia a huhū
4 + QT: Hoʻopiʻi ʻia a hoʻonāukiuki ʻia (wai/ʻaila)
Koho Suface o ka mea hao kila
1 Ili eleele
2 Hoʻokumu ʻia: Alohilohi akā ʻoʻoleʻa; ʻAʻole pololei
3 Mīkini no ka pā: Bright a me ka pololei; Huli liʻiliʻi liʻiliʻi
4 Ihi/Huli ʻia: ʻālohilohi a pololei; Huli liʻiliʻi liʻiliʻi
5 Polished: Mālamalama loa a pololei ka nui; ʻAʻole hoʻololi i ka ʻili
NA WAIWAI MEKANIKAL NO HAAWINA PAA D7
| Hāʻawi Rp0.2 (MPa) | Kuʻi Rm (MPa) | Ka hopena KV/Ku (J) | ʻO ka lōʻihi A (%) | Hoemi i ka pauku kea ma ka haki Z (%) | Kūlana-Hoʻomaʻamaʻa ʻia me ka wela | ʻO ka paʻakikī Brinell (HBW) |
| 984 (≥) | 682 (≥) | 41 | 31 | 23 | Hoʻonā a me ka ʻelemakule, Annealing, Ausaging, Q + T, etc | 322 |
| Nā huahana | Anawaena(mm) | Loihi(mm) |
| Paʻa i ʻōwili ʻia | 10~95 | 3000~5700 |
| Paʻa Paʻa | 95~440 | 3000~5700 |
| Billet | 130×130,140×140,150×150,160×160 | 7000Max |
