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H21 1.2581 SKD5

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H21 1.2581 SKD5 ümarlatt

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Sissejuhatus

Tungsten hot-work steels are of different types, namely, H21 to H26 types. These steels have similar characteristics to that of high-speed steels. The primary alloying elements in tungsten hot-work steels include tungsten, chromium, carbon, and vanadium. They are resistant to distortion when they are air-hardened, and have higher hardening temperature when compared to chromium hot-work steels. Breakage of the tungsten hot-work steels can be reduced if they are preheated to operating temperature before use. Thermal shock resistance and toughness of these steels can be improved by reducing the carbon content.

Rakendused:

The H21 tungsten hot-work tool steels are mainly used for hot-working dies and toolings, e.g., die casting, extrusion and hot-forming of parts.

KirjeMõõtmed (mm)ProtsessTarnetingimus
Ümmargune baarDIA1.0 - 30Külmtõmbamine / tsentraalne lihvimineBright & Anneal
DIA20 - 80KoorimineBright & Anneal
DIA 13-180KuumvaltsitudMust pind ja anniil
DIA 70-400KuumvaltsitudMust pind ja anniil
Lame baarT 3.0-20 XW 20-100KuumvaltsitudMust pind ja anniil
BlokeerimaT 20-200 X 300-800Kuumvaltsitud ja kuum sepistatudMust pind / masin ja anniil
TrossDIA 5.5-13KuumvaltsitudMust pind ja anniil
LehedT1.0 - 2.5KülmvaltsitudMust pind ja anniil
T 2.5 - 8.0KuumvaltsitudMust pind ja anniil
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