ni pato
Awọn ohun elo: Where greater dimensional stability in heat treatment or improved wear resistance is required, tool steels with higher alloy contents, such as A2 or D2 should be considered.
tiwqn
C | Mn | Si | Cr | W |
0.94 | 1.20 | 0.30 | 0.50 | 0.50 |
OHUN ENIYAN KAN
Iṣatunṣe ti Imugboroosi Gbona (63-64 HRC) | |||
Iwọn otutu︒F | nínú/ní︒F×10-6 | Iwọn otutu︒C | mm/mm︒C×10-6 |
100-500 | 5.96 | 38-260 | 10.73 |
100-800 | 7.14 | 38-427 | 12.85 |
100-1000 | 7.84 | 38-538 | 14.11 |
100-1200 | 8.02 | 38-649 | 14.44 |
AGBARA ỌRUN
· iwuwo: 0.283 lb/in3 (7833 kg/m3)
· Walẹ pato: 7.83
· Modulu ti Rirọ: 31 x 106 psi (214GPa)
· ẹrọ: 85-90% ti a 1% erogba, irin
Ooru Itọju Esi | |
Afẹfẹ Tu lati | HRC |
1425F(774︒C),30 iṣẹju | 62 |
1450F(788︒C),30 iṣẹju | 64 |
1475F(802︒C),30 iṣẹju | 65 |
1500F(816︒C),30 iṣẹju | 65 |
1600F(871︒C),30 iṣẹju | 64 |
Awọn ilana Itọju gbigbona
OLÁLÁ
IGBONA LẸKẸNI: | |
Ac1: 1350°F(732℃) | Ac3: 1440°F(760℃) |
AR1: 1295°F(703℃) | AR3: 1240°F(671℃) |
Gbona: Ooru ni oṣuwọn ti ko kọja 400°F fun wakati kan (222°C fun wakati kan) si 1200-1300°F (649-704°C) ki o si dọgba.
Austenitizing (High Heat): Heat slowly from the preheat to 1475-1500°F (802-816C)
Rẹ fun ọgbọn išẹju 30 fun inch akọkọ (25.4 mm) ti sisanra, pẹlu iṣẹju 15 fun afikun inch kọọkan (25.4 mm).
Pipa: Epo parẹ si iwọn otutu ti ko kere ju 150-125°F (66-51°C).
Note: O1 is somewhat prone to quench cracking, especially if there are significant changes in section thickness and sharp internal corners. The oil quenching should be performed so that the heat removal is as uniform as possible in all areas of the part being quenched. Be sure to remove the part from the oil before the temperature drops to ambient temperature. Hot oil at a temperature of 300 to 400°F (149-204°C) is recommended.
Gbigbọn: Temper immediately after quenching. Do not allow the part to cool below 125°F (51°C). The typical tempering range is 350 - 400°F (177 -204°C). Hold at temperature for 1 hour per inch (25.4 mm) of thickness, 2 hours minimum, then air cool to ambient temperature. To minimize internal stresses in cross sections greater than 3 inches (76.2 mm) and to improve stability in parts that will be EDM’d after heat treatment, a soaking time of 4 to 6 hours at the tempering temperature is strongly recommended.
Cryogenic Treatment: Refrigeration treatments should typically be performed after the temper, and must be followed by a second temper.
ANEALING
Annealing gbọdọ ṣee ṣe lẹhin iṣẹ gbona ati ṣaaju ki o to tun-lile.
Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1425 -1450°F (802-816°C), and hold at temperature for 1 hour per inch (25.4mm) of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 50°F per hour (28°C per hour) to 1000°F (538°C). Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be a maximum of 212 HBW.
ohun | Iwọn (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 | |
Flat Pẹpẹ | T 3.0-20 XW 20-100 | Ti yiyi Gbona | Dudu dudu & Afikun |
Àkọsílẹ | T 20-200 X 300-800 | Gbona ti yiyi & Gbona eke | Black dada / Ẹrọ & Anneal |
Waya Rod | DIA 5.5 - 13 | Ti yiyi Gbona | Dudu dudu & Afikun |
Awọn okun | T1.0 - 2.5 | Cold ti yiyi | Dudu dudu & Afikun |
T 2.5 - 8.0 | Ti yiyi Gbona | Dudu dudu & Afikun |