HSS M42 awọn iwe

M42 high speed steel is a cobalt molybdenum tools steel, the addition of 8% cobalt means that M42 delivers superior red-hardness when compared to M2. The composition of M42 makes for a good balance of toughness and hardness and can be found widely used for all types of cutting tools, often used for machining materials and super alloys that are difficult to machine. M42 high speed steel has a heat-treated hardness in the range 68 to 70 HRC. 

ohun elo:

M42 is a high-speed steel for conditions that demand excellent hot hardness. M42 is suitable for cutting tools such as, twist drills, 

broaches, taps, milling cutters, saws, reamers, bandsaw blades and cold work tools. See our tool steel application chart

If the higher red-hardness of M42 if not required for your application then consider M2 high speed steel.       

Awọn alaye apejuwe:M42  sheets

tiwqn

OHUN ENIYAN KAN

AGBARA ỌRUN

·  Density: 0.282 lb/in3 (7806 kg/m3)

· Walẹ pato: 7.81

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

· ẹrọ: 35-40% ti a 1% erogba, irin

Awọn ilana Itọju gbigbona: HARDENING       

Gbona:Ooru ni oṣuwọn ti ko kọja 400°F fun wakati kan (222°C fun wakati kan) si 1500-1600°F (816-871°C), ki o si dọgba.

Iṣeduro (Oru Giga):Ooru ni kiakia lati preheat.

Ileru: 2150-2175°F (1177-1191°C)

Iyọ: 2125-2150°F (1163-1177°C)

Lati mu lile pọ si, lo iwọn otutu ti o kere julọ.

Lati mu líle gbigbona pọ si, lo iwọn otutu ti o ga julọ.

Pipa:Gaasi titẹ, epo gbona, tabi iyọ. Fun gaasi titẹ, oṣuwọn piparẹ iyara si isalẹ 1000°F

(538°C) ṣe pataki lati gba awọn ohun-ini ti o fẹ. 

Fun epo, pa a titi di dudu, ni iwọn 900 ° F (482°C), lẹhinna dara ni afẹfẹ ti o duro de 150 -125°F (66-51°C).

Fun iyọ ti a tọju ni 1000-1100°F (538-593°C), dọgbadọgba, lẹhinna dara ni afẹfẹ simi si 150 -125°F (66-51°C).

Gbigbọn:Ibinu lẹsẹkẹsẹ lẹhin quenching. Iwọn iwọn otutu ti o wọpọ jẹ 950-1050°F (510-566°C). Duro ni iwọn otutu fun wakati 2, lẹhinna afẹfẹ dara si iwọn otutu ibaramu. A nilo tempering meteta.

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 1500-1575°F (843-857°C), and hold for 1 hour per inch (25.4 mm) of thickness, 

minimum of 2 hours. Then cool slowly with the furnace at a rate not exceeding 50°F per hour (28°C per hour) to 1000°F (538°C). 

Tẹsiwaju itutu agbaiye si iwọn otutu ibaramu ninu ileru tabi ni afẹfẹ. Lile abajade yẹ ki o jẹ 269 HBW tabi isalẹ.

Forging M42

Pre-heat slowly to 650 - 760°C and soak. Increase more quickly to the forging temperature of 1010 - 1150°C and equalize prior to forging. 

If the temperature drops below 980°C re-heating will be required. Cool the M42 very slowly after forging.

(data sheet & typical analysis available on request).