Manufacturer Supplier Hot Sale Nf 40ncd3 Steel Polished Surface - China

NF 40NCD3 steel is a high-strength alloy structural steel in the French standard (NF), corresponding to the German DIN standard 34CrNiMo6 or the Chinese GB 40CrNiMoA.

It contains alloy elements such as Cr, Ni, and Mo.

It has excellent toughness, hardenability, and surface treatment properties.

It is often used to manufacture mechanical parts that require high-precision matching and beautiful surfaces (such as shafts, gears, hydraulic components, etc.

).

For the polishing surface treatment of this steel, a reasonable process needs to be formulated in combination with its material characteristics (high hardness, easy to produce work hardening).

The following is a detailed process: Polishing process steps (from rough polishing to fine polishing) The polishing of NF 40NCD3 steel needs to be carried out in stages according to the target surface roughness (such as mirror Ra 0.02-0.05μm or high-precision Ra 0.1-0.8μm).

The combination of mechanical polishing and chemical assisted polishing will have a better effect: 1 - Rough polishing (remove processing marks and reduce roughness) Operation method: Use a low-speed polishing machine (1000-1500 rpm), apply medium pressure, and polish evenly along the texture direction of the workpiece surface, gradually eliminate the rough processing lines, and reduce the surface roughness to Ra 0.8-1.6μm.

2 - Intermediate polishing (refining the surface and preparing for fine polishing)

Operation method: increase the speed to 1500-2500 rpm, apply less pressure, polish in a cross direction (perpendicular to the rough polishing lines), eliminate the residual traces of rough polishing, reduce the surface roughness to Ra 0.1-0.4μm, and the surface presents a uniform matte state.

3 - Fine polishing (to achieve mirror or high-precision surface)

Operation method: increase the speed to 2500-4000 rpm (adjust according to the size of the workpiece to avoid deformation caused by excessive centrifugal force), apply extremely light pressure, and polish evenly in a spiral or circular trajectory until the surface reaches the target finish (such as mirror Ra ≤0.05μm).

Through the above process, the surface of NF 40NCD3 steel can achieve high finish and low roughness, while maintaining the mechanical properties of its matrix, meeting the use requirements of high precision and high reliability.

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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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• Website: https://songshunsteel.com/

• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
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