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ni pato
Irin Irinṣẹ H13 jẹ irin ti o wapọ chromium-molybdenum gbona irin iṣẹ ti o wa ni lilo pupọ ni iṣẹ gbigbona ati awọn ohun elo irinṣẹ iṣẹ tutu.
Lile gbigbona (agbara gbigbona) ti H13 koju ijakadi rirẹ gbona eyiti o waye bi abajade ti alapapo cyclic ati awọn iyipo itutu agbaiye ninu
gbona iṣẹ irinṣẹ ohun elo. Nitori ti awọn oniwe-o tayọ apapo ti ga toughness ati resistance to gbona rirẹ wo inu
(ti a tun mọ ni wiwọn ooru) H13 ti lo fun awọn ohun elo irinṣẹ iṣẹ gbona diẹ sii ju irin-irin irin miiran lọ.
Tun wa bi Electro-Slag-Remelted (ESR) ati Vacuum-Arc-Remelted (VAR) awọn ọja bi daradara.
Awọn ilana imupadabọ n pese isokan kemikali ti o ni ilọsiwaju, isọdọtun iwọn carbide, ati awọn ilọsiwaju ti o somọ ni
darí-ini ati rirẹ-ini.
ohun elo:
Awọn ifibọ, awọn ohun kohun, ati awọn cavities fun ku simẹnti ku, kú simẹnti shot apa aso, gbona forging kú, extrusion ku, ati ṣiṣu m cavities ati irinše ti o nilo ga toughness ati ki o tayọ polishability.
tiwqn
| C | Mn | Si | Cr | Mo | V | C |
| 0.40 | 0.40 | 1.00 | 5.25 | 1.35 | 1.00 | 0.40 |
| Iṣatunṣe ti Imugboroosi Gbona (47-48 HRC) | |||
| Iwọn otutu︒F | nínú/ní︒F×10-6 | Iwọn otutu︒C | mm/mm︒C × 10-6 |
| 80-200 | 5.8 | 21-93 | 10.4 |
| 80-400 | 6.3 | 21-204 | 11.3 |
| 80-800 | 6.9 | 21-316 | 12.4 |
| 80-1200 | 7.3 | 21-427 | 13.1 |
| 80-1500 | 7.5 | 21-538 | 13.5 |
ni pato:
Gbigbọn:Ibinu lẹsẹkẹsẹ lẹhin quenching. Iwọn iwọn otutu aṣoju jẹ 1000-1150°F (538-621°C). Mu ni iwọn otutu otutu fun wakati 1 fun inch (25.4mm) ti sisanra, ṣugbọn fun wakati 2 o kere ju, lẹhinna ṣe afẹfẹ tutu si iwọn otutu ibaramu. A nilo iwọn otutu meji. Lati mu iwọn lile ati iṣẹ-ṣiṣe ọpa pọ si, igba otutu kẹta ni a maa n lo bi iderun aapọn lẹhin gbogbo ẹrọ ṣiṣe, lilọ, ati iṣẹ EDM ti pari lori ọpa.
ANEALING
Annealing gbọdọ ṣee ṣe lẹhin iṣẹ gbona ati ṣaaju ki o to tun-lile.
Ooru ni oṣuwọn ti ko kọja 400°F fun wakati kan (222°C fun wakati kan) si 1575-1625°F (857-885°C), ki o si mu ni iwọn otutu fun wakati kan fun inch ti sisanra ti o pọju; Awọn wakati 1 kere ju. Lẹhinna dara laiyara pẹlu ileru ni oṣuwọn ti ko kọja 2°F fun wakati kan (50°C fun wakati kan) si 28°F (1000°C). Tẹsiwaju itutu agbaiye si iwọn otutu ibaramu ninu ileru tabi ni afẹfẹ. Lile abajade yẹ ki o jẹ ti o pọju 538 HBS.
Ipari Ilẹ: Dudu, Ti o ni inira Machined, Yipada tabi gẹgẹbi awọn ibeere ti a fun.
miiran ohun elo
| ohun elo | Iṣeduro iwọn otutu | HRC |
| Punching tutu nla, awọn irẹrun alokuirin | 1,870-1,885 ° F | 50-52 |
| (1,020-1,030 ° C) | ||
| Ooru 480°F (250°C) | ||
| Irẹrun gbigbona | 1,870-1,885 ° F | |
| (1,020-1,030 ° C) | 50-52 | |
| Tempering 480°F (250°C) tabi | ||
| 1,070-1,110 ° F | 45-50 | |
| (575-600 ° C) | ||
| Idinku awọn oruka (fun apẹẹrẹ fun awọn carbide simenti ku) | 1,870-1,885 ° F | 45-50 |
| (1,020-1,030 ° C) | ||
| Iwọn otutu 1,070-1,110°F | ||
| (575–600°C) | ||
| Wọ-tako awọn ẹya | 1,870-1,885 ° F | mojuto |
| 50-52 | ||
| dada | ||
| ~ 1000HV1 |
AGBARA ỌRUN
· iwuwo: 0.280 lb/in3 (7750 kg/m3)
· Walẹ pato: 7.75
· ẹrọ: 65-70% ti a 1% erogba, irin
| ohun | Apa miran (mm) | ilana | Ifijiṣẹ ifijiṣẹ |
Yika Pẹpẹ | DIA1.0 - 30 | Tutu-yiya / Centerless lilọ | Imọlẹ & Anneal |
| DIA20 - 80 | peeling | Imọlẹ & Anneal | |
| DIA 13-180 | Ti yiyi Gbona | Dudu dudu & Afikun | |
| DIA 70 - 400 | Ti yiyi Gbona | Dudu dudu & Afikun |
