42CrMo4 Alloy Steel Bars

42CrMo4 Alloy Steel Bars

42CrMo4 steel plates are delivered in heat treatment (normalizing, annealing or high temperature tempering) or no heat treatment

1, hot rolling: hot rolling (hot rolling) is relative to cold rolling, cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling above the recrystallization temperature. In simple terms, a piece of billet is heated after several rolling, and then cut edge, straightening into a steel plate, which is called hot rolling.

2, controlled rolling, by controlling the heating temperature, rolling temperature, deformation system and other process parameters, control the change law of austenite structure and the structure of phase change products, to achieve the purpose of refining the structure, improve the strength and toughness.

3, the concept of normalizing rolling is a rolling method for final deformation within a certain temperature range. It can make the state of the material the same as that of the supplementary normalizing treatment, and its mechanical properties are also the same as that of the supplementary normalizing treatment.

4, normalizing: steel factory before the hot treatment, this delivery state is called normalizing state. Because the normalizing heating temperature (Ac3+30 ~ 50°C for hypoeutectoid steel, Accm+30 ~ 50°C for hypereutectoid steel) is strictly controlled than the hot rolling termination temperature, the structure and performance of the steel are uniform. Compared with the annealed steel, due to the faster normalizing cooling rate, the number of pearlite in the structure of the steel increases, the pearlite lamellar and the grain refinement of the steel, so it has higher comprehensive properties, and is conducive to improving the Weil structure of low carbon steel and the cementite network of hypereutectoid steel, which can prepare the organization for further heat treatment of the finished product. Carbon bonded steel, bonded steel steel is often delivered in normalizing state.

PRODUCT ADVANTAGE

FACTORY EQUIPMENT

Application fields

Hot Tags: 42crmo4 alloy steel bars, China 42crmo4 alloy steel bars manufacturers, suppliers, factory, Cold Drawn Steel Round Bar, Cold Drawn Steel Bar, 65Mn Spring Steel Round Bar, S20C Carbon Steel, Carbon Steel Round Bar C60, Cold Rolled High Carbon Steel Coil