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D2 1.2379 SKD11

Башкы бет>Буюмдар>Муздак жумушчу курал болот>D2 1.2379 SKD11

D2 1.2379 SKD11 жалпак тилке

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өзгөчөлүктөрү
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.

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

Курамы

C

Mn

Si

Cr

Mo

V

1.50

0.30

0.30

12.00

0.75

0.90


САЛЫШТЫК КАСИЕТТЕР

1492431879960282

Жылуулук кеңейүү коэффициенти (58-59 HRC)

Температура︒F

in/in︒F×10-6

Температура︒C

мм/мм︒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

ФИЗИКАЛЫК КАСИЕТТЕРИ

· Тыгыздыгы: 0.278 lb/in3 (7695 кг/м3)

· Салыштырмалуу тартылуу: 7.70

· Ийкемдүүлүк модулу: 30 x 106 psi (207GPa)

· Machinability: 50% көмүртек болоттун 60-1%

1492431918971275

ЖЫЛУУ ДАЯРДОО БОЮНЧА НУСКАМАЛАР

КАТАЛУУ

КРИТИКАЛЫК ТЕМПЕРАТУРА:

Ac1: 1449°F(788℃)

Ac3: 1553°F(845℃)

AR1: 1418°F(769℃)

AR3: 1373°F(744℃)

Алдын ала ысытуу: 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.

Аустениттөө (жогорку жылуулук): Heat slowly from the preheat. Furnace or Salt: 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).

Чыңдоо: 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. The typical tempering range is 350 to 400ºF (177 to 204ºC).

Максималдуу эскирүүгө туруштук берүү үчүн, 300-350°F (149-177°C) 62-64 HRC катуулугу үчүн температураны түзүңүз. Тийишүүгө каршылык менен катуулуктун ортосундагы оптималдуу баланс үчүн, 500-550°F (260-288°C) ортосундагы температура. Бул 58-60 HRC өндүрөт.

For maximum toughness, double temper, 2 hours plus 2 hours, at temperatures above 950°F (510°C). This will produce hardness of less than 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.

Annealing: Annealing must be performed after hot working and before re-hardening. Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1600-1650°F (871-899°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 255 HBW.

нерсеӨлчөмү (мм)ProcessЖеткирүү шарты
тегерек BarDIA1.0 - 30Муздак тартуу / Борборсуз майдалооBright & Anneal
DIA20 - 80пилингBright & Anneal
DIA 13-180Hot RolledКара бет жана Anneal
DIA 70 - 400Hot RolledКара бет жана Anneal
Жалпак тилкеT 3.0-20 XW 20-100Hot RolledКара бет жана Anneal
тосууT 20-200 X 300-800Hot Rolled & Hot ForgedКара бети / Machine & Anneal
Wire RodDIA 5.5 - 13Hot RolledКара бет жана Anneal
барактарT1.0 - 2.5Муздак түрмөкКара бет жана Anneal
T 2.5 - 8.0Hot RolledКара бет жана Anneal
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