Forgings

Hot work die steel H13 is a commonly used medium carbon chromium hot work die steel. Due to its excellent high-temperature strength, wear resistance, and thermal fatigue resistance, it is widely used in the manufacture of die-casting molds, hot forging dies, etc.

Due to the presence of a large amount of eutectic carbides in high alloy tool steel with pearlite, sufficient fragmentation can only be achieved through significant deformation; On the other hand, due to the influence of its alloy composition, high alloy tool steel with martensite has low plasticity, high deformation resistance, poor thermal conductivity, and high tissue stress during cooling. It is prone to defects such as cracks in the forging production process. Thus creating a contradiction that complicates its forging process. Therefore, when formulating the forging process for this type of steel, corresponding technical measures should be developed from each link to address this contradiction and ensure the quality of its forgings.

Hot work tool steels, such as H11 (1.2343) and H13 (1.2344), play a critical role in various industrial applications, particularly where tools are subjected to high temperatures and harsh conditions. These steels are specifically engineered to withstand the intense thermal cycles, mechanical stresses, and abrasive wear that are typical in hot working processes, such as forging, casting, and extrusion.

GH4169 nickel based high-temperature alloy has good performance in high temperature resistance, corrosion resistance, fatigue resistance, etc. Its characteristic is that its working temperature can reach 850 ℃, and it can withstand high temperatures of 1100 ℃ in a very short time.

Due to prolonged friction and rolling contact between the work roll and the support roll, the support roll bears significant shear and contact stresses, resulting in deformation strengthening and wear. Therefore, its main failure modes are peeling and wear. The tonnage of forged steel support rollers is large, the production process is complex, and waste products are easily generated.

The manufacturing methods of support rollers mainly include forging and casting. The hot working process of forged steel support rollers mainly includes smelting, casting, forging, and heat treatment, so that the working layer of the produced support roller body can achieve high wear resistance, high and uniform hardness, and excellent accident resistance. At the same time, it ensures that the core and neck of the roller have high toughness and strength, to ensure the dimensional accuracy and good surface quality of cold-rolled strip or steel plate.