At present forging factory commonly used hammer forging die material have what?

Hammer forging die materials commonly used are as follows.

1, high toughness semi-heat-resistant die steel

Forging processing at 350? 425? Work with high strength and impact toughness, are: 5CrNiMo, 5CrMnMo, 5CrMnSiMoV. This type of steel carbon content of about 0.5%, containing the right amount of chromium, nickel (manganese), molybdenum, vanadium and other alloying elements. Due to chemical composition limitations, this type of steel is usually semi-martensitic steel.

2, moderate toughness heat-resistant die steel

This type of steel has a higher impact toughness, forging machining at 600 ℃, have a higher strength, the main grades are: 3Cr2W8V, 4Cr5MoVSi, 3Cr3Mo3VNb, 4Cr5W2VSi and so on. The carbon content of such steel is reduced, in order to obtain higher heat resistance, containing more chromium, molybdenum (tungsten) vanadium, niobium, silicon and other alloying elements. In the case of small mold size, after austenitizing air-cooled, martensite can be obtained.

3, high temperature anti-wear mold steel

Its impact toughness is poor, forging work at 600 ℃, with higher hardness and wear resistance, such steel representatives: 4Ce3Mo3W4VTiNb, 6Cr4Mo3Ni2WV. The characteristics of this type of steel is the combination of the high strength of high-speed steel and the toughness of the tool steel with a lower content of alloying elements.

In addition, the forging plant in the choice of forging material should also consider the forgings batch, the production is not large, you can consider the use of 40Cr steel instead, and sometimes even use cast steel mold, or cast steel surfacing forging die blank, thereby greatly reducing the mold Cost, but should be used in the case of small impact load.