D2 1.2379 SKD11 mmanya dị larịị

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.

ngwa: Mpịakọta, ntụmadị, na-anwụ maka idebe, akpụ, mezie, na ịghagharị eri, mma ịkwa osisi, mma na-edozi nri, na nlele.

Mejupụtara

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

AKWỤKWỌ MMỤTA

Ọnụọgụ nke Mgbasa ọkụ (58-59 HRC)
Okpomọkụ︒F	na/na︒F×10-6	Okpomọkụ︒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

NWAANYI AGBARA

Njupụta: 0.278 lb/in3 (7695 n'arọ/m3)

· Nnukwu ike ndọda: 7.70

Modulus nke Njide: 30 x 106 psi (207GPa)

· Machinability: 50-60% nke a 1% carbon ígwè

Ntuziaka ọgwụgwọ okpomọkụ

NA-AKWỤKWỌ

Okpomọkụ dị oke egwu:
Ac1: 1449°F(788℃)	Ac3: 1553°F(845℃)
AR1: 1418°F (769 ℃)	AR3: 1373°F (744 ℃)

Na-ekpo ọkụ: 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.

Ịkwado (Ọkụ dị elu): Kpoo nwayọ nwayọ site na preheat. Ọkụ ma ọ bụ Nnu: 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).

Na-ewe iwe: Iwe ozugbo emenyụchara. Jide na okpomọkụ maka 1 hour kwa inch (25.4 mm) nke ọkpụrụkpụ, awa 2 kacha nta, wee mee ka ikuku dị jụụ ruo okpomọkụ. Ụdị okpomọkụ a na-ahụkarị bụ 350 ruo 400ºF (177 ruo 204ºC).

Maka oke nguzogide iyi, iwe n'etiti 300-350°F (149-177°C) maka ike nke 62-64 HRC. Maka nguzozi kachasị mma n'etiti nguzogide iyi na ike siri ike, iwe dị n'etiti 500-550°F (260-288°C). Nke a ga-emepụta 58-60 HRC.

Maka oke siri ike, iwe ọkụ okpukpu abụọ, awa 2 gbakwunyere awa 2, na okpomọkụ karịrị 950°F (510°C). Nke a ga-emepụta ike nke na-erughị 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.

Mgbakwunye: A ga-emerịrị mgbakasị ahụ mgbe arụchara ọrụ ọkụ na tupu ịmaliteghachi ike. Kpoo ọkụ na ọnụego agaghị agafe 400°F kwa elekere (222°C kwa elekere) ruo 1600-1650°F (871-899°C), ma jide na okpomọkụ maka 1 hour kwa inch (25.4mm) nke oke ọkpụrụkpụ; 2 awa kacha nta. Mgbe ahụ, jiri nwayọọ nwayọọ mee ka ọkụ ahụ dị jụụ na ọnụego agaghị agafe 50ºF kwa elekere (28°C kwa elekere) ruo 1000°F (538°C). Gaa n'ihu na-ajụkwa oyi ruo n'ọnọdụ okpomọkụ n'ime ọkụ ma ọ bụ n'ikuku. Isi ike ga-esi na ya pụta kwesịrị ịbụ 255 HBW kacha.

item	Akụkụ (mm)	usoro	Ọnọdụ nnyefe
Ogwe okirikiri	DIA1.0 - 30	Oyi-ese / enweghị ebe egweri	Na-egbuke egbuke & Anneal
	DIA20 - 80	ekpepụsị	Na-egbuke egbuke & Anneal
	DIA 13-180	Agbanyela Ọkụ	Black elu & Mgbakwunye
	DIA 70-400	Agbanyela Ọkụ	Black elu & Mgbakwunye
Ewepụghị Ogwe	T 3.0-20 XW 20-100	Agbanyela Ọkụ	Black elu & Mgbakwunye
Gbochie	T 20-200 X 300-800	Hot Rolled & Hot Forged	Black elu / Igwe & Anneal
Waya Rod	DIA 5.5-13	Agbanyela Ọkụ	Black elu & Mgbakwunye
Akwụkwọ	T1.0-2.5	Oyi Emere	Black elu & Mgbakwunye
	T 2.5 - 8.0	Agbanyela Ọkụ	Black elu & Mgbakwunye