China ASTM A681 D7 Tool Steel Bar Manufacture and Supplier
D7 Tool Steel ke tšepe e phahameng ea k'habone, e phahameng ea chromium e thatafatsang moea e nang le khanyetso e ntle ea ho roala.
Khanyetso ena ea ho apara e bakoa haholo-holo ke khabone e phahameng le vanadium, tse etsang palo e kholo ea likaroloana tse thata tsa vanadium carbide ka har'a tšepe, e thata e lekanang le 80 ho isa ho 85 Rockwell C.
Thepa ena e etsa hore tšepe ea sesebelisoa sa D7 e atlehe ho hanela ho roala ha e kopana le litšepe tse ling 'me e kopane le li-slurries tse omeletseng le tse metsi tsa likaroloana tse thata tse kang lehlabathe, mecha ea phatlalatso e thunyang le lirafshoa.
Ts'epe ea sesebelisoa sa D7 e sebelisoa haholo, haholo-holo ho kenyelletsa le litene tsa hlobo ea litene, hlobo ea briquetting, lithapo tsa lisebelisoa tse thunngoeng, lisebelisoa tsa ceramic extrusion le lisebelisoa tsa ho etsa, lisebelisoa tsa ho kopanya phofo, setšoantšo se tebileng se shoa, li-roller tse bataletseng le liporo tsa tataiso ea mochini, jj.
Maemong ana a ts'ebeliso, ho hanyetsa ho roala, ho thatafala le ho tiea ha tšepe ea sesebelisoa sa D7 li sebelisoa ka botlalo.
Mabapi le phekolo ea mocheso, mokhoa o thata oa D7 tšepe ea sesebelisoa hloka mehato e kang preheating, austenitization (mocheso o phahameng) le tempering.
Mocheso o tloaelehileng oa mocheso ke 300 ° F (149 ° C) bakeng sa ho hanyetsa ka ho fetisisa ho apara. Hape, bakeng sa boima bo boholo, ho halefisa habeli ho ka boela ha etsoa, ho tšoara mocheso o ka holimo ho 950 ° F (510 ° C) lihora tse peli ebe o tšoara lihora tse ling tse peli.
Mabapi le ts'ebetso ea ho itšeha, ts'ebetso ea ho itšeha ea tšepe ea sesebelisoa sa D7 e ka bang 30-35% ea 1% ea tšepe ea carbon. Sena se bolela hore lisebelisoa le mekhoa e nepahetseng ea hlokahala nakong ea ts'ebetso ea mochini ho netefatsa boleng bo botle ba mochini le katleho.
Ka kakaretso, tšepe ea D7 ke sesebelisoa sa tšepe se sebetsang hantle se sa sebetseng hantle, se loketseng maemo a fapaneng a ts'ebeliso a hlokang ho mamella ts'ebetso le ts'ebetso.
Ho hanyetsa ha eona ho khabane ka ho fetisisa, ho thatafala le ho tiea, hammoho le ts'ebetso e ntle ea ho itšeha, e etsa hore e sebelisoe haholo tlhahiso ea indasteri.
Sesebelisoa sa tšepe sa D7 ke tšepe ea boleng bo holimo ea carbon, high-chromium alloy e nkang boemo ba bohlokoa tlhahisong ea indasteri bakeng sa thepa ea eona e ntle ea 'mele le ea lik'hemik'hale. Sengoliloeng sena se ikemiselitse ho qaqisa lintlha tsa tšepe ea D7 le ts'ebeliso ea eona ea mantlha.
Lintlha tse ka sehloohong tsa tšepe ea D7 Tool
Boima bo phahameng le ho hanyetsa ka matla ho apara: Kamora kalafo e nepahetseng ea mocheso, tšepe ea D7 e ka fihlela boima bo phahameng haholo, ea e fa khanyetso e ntle ea ho roala.
Tšobotsi ena e etsaD7 tšepee ntle haholo libakeng tse sebetsang tse tlas'a meroalo e phahameng le likhohlano tse phahameng.
Khahlano le tšusumetso: Ka lebaka la boima ba eona bo phahameng le boima bo botle, tšepe ea sesebelisoa sa D7 e na le khanyetso e ntle ea phello 'me e khona ho boloka botšepehi ba sebopeho ha e angoa ke matla a kantle.
Corrosion resistance: Ts'epe ea sesebelisoa sa D7 e na le chromium e itseng, e e lumellang ho boloka botsitso le nako e telele libakeng tse ling tse senyang.
Phapang ke efe lipakeng tsa tšepe ea D7 le D2?
D7 tool steel le D2 tool steel (eo hape e tsejoang e le Cr12MoV) ke litšepe tse peli tse fapaneng tsa lisebelisoa, e 'ngoe le e' ngoe e na le thepa le lits'ebetso tse ikhethang.
D7 Tool Steel ke tšepe e phahameng ea k'habone, e phahameng ea chromium e thatafatsang moea e nang le khanyetso e ntle ea ho roala. Likahare tsa eona tse phahameng tsa khabone le vanadium li hlahisa palo e kholo ea likaroloana tse thata tsa vanadium carbide ka har'a tšepe, e nang le bothata bo lekanang le hoo e ka bang 80 ho isa ho 85 Rockwell C.
Ka hona, e hanela ka katleho ho roala ho bakoang ke ho thella ho kopana le litšepe tse ling le ho kopana le slurry e omeletseng le e metsi ka likaroloana tse thata tse kang lehlabathe, lithunya tse phatlohang mecha ea litaba le li-ceramics. Sena se etsa hore tšepe ea sesebelisoa sa D7 e tšoanelehe bakeng sa lits'ebetso tse fapaneng, ho kenyeletsoa lesela la hlobo ea litene, li-briquetting dies, lisebelisoa tsa ho thunya lithunya, li-ceramic extrusion le lisebelisoa tsa ho etsa lisebelisoa, lisebelisoa tsa ho kopanya phofo, ho taka ho tebileng ho shoa, li-roller tse bataletseng le liporo tsa tataiso ea mochini.
D2 Tool steel (Cr12MoV) hape ke tšepe e phahameng ea carbon, high-chromium e nang le bothata bo botle, ho hanyetsa ho roala, ho hanyetsa kutu le ho hanyetsa ho senyeha. Likahare tsa eona tsa carbon li phahame ho 1.40% -1.60%, e leng ho ntlafatsang ho thatafala ha eona le ho hanyetsa ho apara.
Ka nako e ts'oanang, tšepe e boetse e na le chromium e phahameng le molybdenum, e ka ntlafatsang ho hanyetsa ha eona ka katleho.
Lisebelisoa tsa tšepe tsa D2 li ka fumana thepa e ntle ea mochini le ho thatafala ka lits'ebetso tsa kalafo ea mocheso joalo ka ho tima le ho futhumatsa, 'me e na le machinability e ntle ea ho fihlela litlhoko tse fapaneng tsa machining. Thepa ena e etsa tšepe ea sesebelisoa sa D2 e sebelisoang haholo ha ho etsoa likarolo tse phahameng joalo ka hlobo, lisebelisoa tsa ho itšeha le liforomo tsa forging.
D7 Tool bar e chitja ea tšepe
Motsoako oa lik'hemik'hale(karolo ea boima)(wt.%) ea D7 tool steel
| 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 ho isa ho 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
Khetho ea ho qhibilihisa ea D7
1 EAF: Sebōpi sa Motlakase sa Arc
2 EAF+LF+VD: Ho qhibilihisoa ho hloekisitsoeng le ho ntša metsi ka vacuum
3 EAF + ESR: Electro Slag Remelting
4 EAF + PESR: sepakapaka se sireletsang Electro Slag Remelting
5 VIM + PESR: Ho qhibiliha ha vacuum induction
Ho theha Khetho ea tšepe ea D7
1 Tsebetso ea rolling e chesang
2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oli-hydraulic; Ho etsa ka nepo
Khetho ea ho phekola mocheso ea d7 tšepe
1 +A: E hlophisitsoe (e tletse / e bonolo / spheroidizing)
2 +N: E tloaelehileng
3 +NT: E tloaelehile ebile e halefile
4 + QT: E tingoe ebile e halefile (metsi / oli)
Khetho ea Suface ea Tool Steel
1 Sebaka se Setšo
2 Grounded: E khanyang empa e mahoashe; Eseng ho nepahala
3 Ho lokisa poleiti: Ho khanya le ho nepahala; Leqeba le lenyane le fetohang
4 E ebollotsoe/E Fetotsoe: E khanya ebile e nepahetse; Leqeba le lenyane le fetohang
5 E bentšitsoe: E khanya haholo ebile e nepahetse; Eseng leqeba
LITŠOANTŠISO MOCHEFE TSA SEBELISA TŠEPE D7
| Khefutsa Rp0.2 (MPa) | Tensile Rm (MPa) | Tšusumetso KV/Ku (J) | Elongation A (%) | Ho fokotseha ha karolo ea sefapano ho robeha Z (%) | Boemo ba ho Tšoaroa ke Mocheso | Brinell hardness (HBW) |
| 984 (≥) | 682 (≥) | 41 | 31 | 23 | Tharollo le botsofali, Annealing, Ausaging, Q+T, joalo-joalo | 322 |
| Lihlahisoa | Diameter(mm) | Bolelele(mm) |
| Theko e kolobisitsoeng | 10-95 | 3000 ~ 5700 |
| Bar e entsoeng | 95-440 | 3000 ~ 5700 |
| Billet | 130×130,140×140,150×150,160×160 | 7000Max |
