D2 1.2379 SKD11 alapin igi

D2 Tool Steel is a versatile high-carbon, high-chromium, air-hardening tool steel that is characterized by a relatively high attainable hardness and numerous, large, chromium-rich alloy carbides in the microstructure. These carbides provide good resistance to wear from sliding contact with other metals and abrasive materials. Although other steels with improved toughness or improved wear resistance are available, D2 provides an effective combination of wear resistance and toughness, tool performance, price, and a wide variety of product forms. Also available as an Electro-Slag-Remelted (ESR) product. The remelting process provides improved chemical homogeneity, refinement of carbide size, and the associated improvements in mechanical and fatigue properties.

Awọn ohun elo: Rolls, punches, dies for blanking, forming, trimming, and thread rolling, shear knives, food-processing knives, and gauges.

tiwqn

C	Mn	Si	Cr	Mo	V
1.50	0.30	0.30	12.00	0.75	0.90

OHUN ENIYAN KAN

Iṣatunṣe ti Imugboroosi Gbona (58-59 HRC)
Iwọn otutu︒F	nínú/ní︒F×10-6	Iwọn otutu︒C	mm/mm︒C×10-6
100-500	5.71	38-260	10.3
100-800	6.63	38-427	11.9
100-1000	6.82	38-538	12.3
100-1200	6.83	38-649	12.3
100-1500	6.9	38-816	12.4

AGBARA ỌRUN

· iwuwo: 0.278 lb/in3 (7695 kg/m3)

· Walẹ pato: 7.70

· Modulu ti Rirọ: 30 x 106 psi (207GPa)

· ẹrọ: 50-60% ti a 1% erogba, irin

Awọn ilana Itọju gbigbona

OLÁLÁ

IGBONA LẸKẸNI:
Ac1: 1449°F(788℃)	Ac3: 1553°F(845℃)
AR1: 1418°F(769℃)	AR3: 1373°F(744℃)

Gbona: To minimize distortion and stresses in large or complex tools use a double preheat. Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1150-1250°F (621-677°C) equalize, then heat to 1400-1450°F (760-788°C). For normal tools, use only the second temperature range as a single preheating treatment.

Iṣeduro (Oru Giga): Ooru laiyara lati preheat. Ileru tabi Iyọ: 1850-1875°F (1010-1024°C).

Quenching: Air or pressurized gas to 150-125ºF (66-51ºC). Sizes up to 4 inches (101.6 mm) in thickness will through harden when air cooled from 1575ºF (857ºC). Sizes up to 6 inches (152.4 mm) in thickness will through harden when air cooled from 1625ºF (885ºC).

Gbigbọn: Ibinu lẹsẹkẹsẹ lẹhin quenching. Duro ni iwọn otutu fun wakati kan fun inch (1 mm) ti sisanra, wakati 25.4 o kere ju, lẹhinna afẹfẹ tutu si iwọn otutu ibaramu. Iwọn iwọn otutu aṣoju jẹ 2 si 350ºF (400 si 177ºC).

Fun o pọju resistance resistance, ibinu laarin 300-350°F (149-177°C) fun líle ti 62-64 HRC. Fun iwọntunwọnsi to dara julọ laarin atako yiya ati lile, ibinu laarin 500-550°F (260-288°C). Eyi yoo gbejade 58-60 HRC.

Fun lile lile ti o pọju, ibinu meji, wakati 2 pẹlu wakati 2, ni awọn iwọn otutu ti o ga ju 950°F (510°C). Eyi yoo ṣe agbejade lile ti o kere ju 58 HRC.

To minimize internal stresses in cross sections greater than 6 inches (152.4 mm) and to improve stability in tools that will be EDM'd after heat treatment, soaking times of 4 to 6 hours at the tempering temperature below 950°F (510°C) are strongly recommended.

Iboju: 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 1600-1650°F (871-899°C), ki o si mu ni iwọn otutu fun wakati kan fun inch (1mm) ti sisanra ti o pọju; Awọn wakati 25.4 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 o pọju 538 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