Best Alloy Structure Steel 25crmo4 Material Welding And Processing - China

As a high-strength alloy structural steel, 25CrMo4 steel contains alloy elements such as chromium and molybdenum, so its welding and processing performance has its own particularity, and specific processes must be followed to ensure quality.

The following is an explanation of welding characteristics, processing points and precautions: 1 - Welding performance: heat input needs to be controlled to avoid crack risks

25CrMo4 steel has medium weldability.

Due to the presence of alloy elements (Cr, Mo), the steel has a strong tendency to harden, and cold cracks (especially hydrogen-induced cracks) are easily generated during welding, and hardened structures may appear in the heat-affected zone (HAZ).

2 - Processing performance: Select process parameters according to the supply status

The processing performance of 25CrMo4 steel is closely related to its supply status, and the cutting parameters need to be adjusted in a targeted manner:

1 - Processing characteristics under different states

Hot-rolled or annealed state: low hardness (about 180-220HB), good plasticity, medium cutting performance, suitable for conventional processing such as turning, milling, and drilling;

2 - Key points of processing technology

Tool selection:

- Processing hot-rolled/annealed state: high-speed steel (HSS) or carbide tools (such as WC-Co type) can be used;

- Processing quenching and tempering state: carbide with better wear resistance (such as TiC coated tools) or ceramic tools are required to reduce tool wear; Summary

The core of welding 25CrMo4 steel is "temperature control and crack prevention" (preheating, low-hydrogen welding materials, and post-weld dehydrogenation).

Processing requires matching tools and parameters according to the supply status.

Reasonable technology can give full play to its advantages of high strength, heat resistance and fatigue resistance, ensuring that welded joints and processed parts meet the use requirements of key components such as turbines and drive shafts.

Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 0086 0769 85475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

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