D3 1.2080 SKD1 wire rod

D3 Tool Steel is a high-carbon, high-chromium, oil-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.

D3 exhibits excellent stability in heat treatment, holding size almost as well as the air-hardening, high-carbon, high-chromium die steels such as D2.

Awọn ohun elo: Ṣiṣẹda yipo, iyaworan ku, lara, powder compaction tooling, ati lamination ku.

tiwqn

C	Mn	Si	Cr	V
2.15	0.40	0.40	12.25	0.25

OHUN ENIYAN KAN

Iṣatunṣe ti Imugboroosi Gbona (58-59 HRC)
Iwọn otutu︒F	in/in︒F×10-6	Iwọn otutu︒C	mm/mm︒C×10-6
100-500	6.58	38-260	11.84
100-800	7.15	38-427	12.87
100-1000	7.32	38-538	13.81
100-1200	7.54	38-649	13.57
100-1500	7.72	38-816	13.90

AGBARA ỌRUN

· iwuwo: 0.284 lb/in3 (7870 kg/m3)

· Walẹ pato: 7.87

· Modulus of Elasticity: 30 x 106 psi (207GPa)

· Electrical Resistivity: 54.8 uOhm-cm at 70ºF (21ºC)

· ẹrọ: 45-50% ti a 1% erogba, irin

Awọn ilana Itọju gbigbona

OLÁLÁ

IGBONA LẸKẸNI:
Ac1: 1440°F(782℃)	Ac3: 1530°F(8320℃)
AR1: 1410°F(766℃)	AR3: 1370°F(743℃)

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 1200-1250°F (649-677°C) equalize, then heat to 1400-1450°F (760-788°C). For normal tools, use only the first temperature range as a single preheating treatment.

Austenitizing (High Heat): Heat slowly from the preheat to 1700-1750°F (927-954°C)

Quenching: For oil, quench until black, about 900°F (482°C), then cool in still air to 150-125°F (66-51°C).

For pressurized gas, the furnace should have a minimum quench pressure of 4 bars. A quench rate of approximately 400°F (222°C) per minute to below 1000°F (538°C) is critical to obtain the desired properties.

Gbigbọn: Temper immediately after quenching. Hold at temperature for 1 hour per inch (25.4 mm) of thickness, 2 hours minimum, then air cool to ambient temperature.

Fun o pọju resistance resistance, ibinu laarin 300-350°F (149-177°C) fun líle ti 62-63 HRC. Fun iwọntunwọnsi to dara julọ laarin atako yiya ati lile, ibinu laarin 450-500°F (232-260°C). Eyi yoo gbejade 58-60 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 are strongly recommended.

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 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.

Cryogenic Treatment: Refrigeration treatments should typically be performed after the first temper, and must be followed by a second temper

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