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Precision-Machined High-Hardness Nickel-Plated Cr12MoV Measurement Components
Header include
This is a precision core component made of Cr12MoV cold working die steel and heat-treated to an ultra-high hardness grade of HRC55-60. Its manufacturing process comprehensively employs a variety of advanced numerical control methods such as CNC lathes, slow wire EDM and CNC machining centers, ultimately achieving micron-level geometric accuracy (key shape and position tolerances ≤0.015mm, positioning hole tolerances 0~+0.01mm), and nickel plating surface treatment is applied to meet the requirements of corrosion resistance and surface functionality.
Abject of manufacture
1.Materials：Cr12MoV die steel. This is a high-carbon and high-chromium alloy steel, renowned for its high hardenability, excellent wear resistance and good dimensional stability. It is an ideal choice for manufacturing precision molds, fixtures and core components of automated machinery.
2.Final state: Quenching + tempering treatment, hardness reaches HRC55-60; Nickel plating on the surface.
3.Basic shape: Rotary body structure, with external dimensions of Φ145 × 165.
4.Core features: It includes high-precision outer circles, end faces, complex cavities, and the crucial positioning reference holes.
Core features and requirements1.Ultra-high hardness and wear resistance (HRC55-60) : This determines that all finishing processes must be carried out after heat treatment, which belongs to "hard state processing" and has extremely high requirements for the rigidity of cutting tools and equipment.
2.Strict shape and position tolerances (≤0.015mm) : The parallelism, perpendicularity, coaxiality, etc. between the key surfaces and holes of the parts must be controlled within 0.015mm. This is the core to ensure assembly accuracy and operational stability.
3.Precise fit tolerance (0 to +0.01mm) : For positioning precision holes, it is required that the hole diameter can only have a positive deviation to ensure that pin shafts or shaft parts can be smoothly assembled without interference, achieving precise clearance fit.
4.Functional surface treatment (nickel plating) : The coating is mainly used for rust prevention and corrosion resistance. At the same time, it can improve surface smoothness, reduce the coefficient of friction, and has a certain aesthetic effect. During processing, a uniform thickness space should be reserved for the coating.
Key processes and technologies
To meet the above requirements, the processing flow needs to be scientifically planned to give full play to the expertise of each CNC equipment:
1.CNC machining center
（1）Role: As the main processing force, undertake the majority of milling tasks.
（2）Task：
After heat treatment, the "initial reference reconstruction" is first carried out on the CNC using a precision vise or process plate to process the reference surfaces and holes that the subsequent processes rely on for positioning.
Complete semi-finishing and finishing of all complex cavities, curved surfaces, threaded holes and other features.
Pre-drill threading holes for slow wire electrical discharge machining.
2.Slow wire cutting
(1)Role: Specializing in high-precision holes and irregular profiles on high-hardness materials, its electrical discharge machining principle is not limited by the hardness of the material.
(2)Task:
Specialized in processing positioning precision holes with tolerances ranging from 0 to +0.01mm. Through multiple cutting techniques, micron-level precision and excellent surface finish can be stably achieved.
Process any internal and external irregular contours with high-precision requirements
3.CNC lathes
(1)Role: Responsible for ensuring the final accuracy of rotary features such as cylindrical surfaces and end faces
(2)Task:
Precisely turn the outer circle and end face of Φ145 to ensure that the shape and position tolerances such as roundness, cylindricity and end face runout meet the requirement of ≤0.015mm.
Hard turning must be carried out using super-hard tools such as CBN (cubic boron nitride).
4.Nickel plating
(1)Timing: It should be carried out after all machining, deburring and cleaning are completed
(2)The coating should be uniform and dense, with a thickness that complies with the design requirements (typically ranging from several micrometers to tens of micrometers), and should not affect the critical dimensions and precision of the parts.
Conclusion
The manufacturing of this part is a perfect combination of materials science, heat treatment processes and advanced numerical control technology. The core lies in:
1.Utilize the flexibility of CNC machining centers to complete the processing of complex structures.
2.Ultra-precision hole processing is achieved by taking advantage of the feature that slow wire cutting is not affected by hardness.
3.Rely on the professionalism of CNC lathes to ensure the accuracy of the rotating body.
4.Ultimately, nickel plating endows it with long-lasting service performance.
The entire process is closely linked and precisely coordinated. Eventually, a precision industrial product that meets all the strict technical conditions was successfully forged on the ultra-hard Cr12MoV material.
Precision-Machined High-Hardness Nickel-Plated Cr12MoV Measurement Components
Header include
This is a precision core component made of Cr12MoV cold working die steel and heat-treated to an ultra-high hardness grade of HRC55-60. Its manufacturing process comprehensively employs a variety of advanced numerical control methods such as CNC lathes, slow wire EDM and CNC machining centers, ultimately achieving micron-level geometric accuracy (key shape and position tolerances ≤0.015mm, positioning hole tolerances 0~+0.01mm), and nickel plating surface treatment is applied to meet the requirements of corrosion resistance and surface functionality.
Abject of manufacture
1.Materials：Cr12MoV die steel. This is a high-carbon and high-chromium alloy steel, renowned for its high hardenability, excellent wear resistance and good dimensional stability. It is an ideal choice for manufacturing precision molds, fixtures and core components of automated machinery.
2.Final state: Quenching + tempering treatment, hardness reaches HRC55-60; Nickel plating on the surface.
3.Basic shape: Rotary body structure, with external dimensions of Φ145 × 165.
4.Core features: It includes high-precision outer circles, end faces, complex cavities, and the crucial positioning reference holes.
Core features and requirements1.Ultra-high hardness and wear resistance (HRC55-60) : This determines that all finishing processes must be carried out after heat treatment, which belongs to "hard state processing" and has extremely high requirements for the rigidity of cutting tools and equipment.
2.Strict shape and position tolerances (≤0.015mm) : The parallelism, perpendicularity, coaxiality, etc. between the key surfaces and holes of the parts must be controlled within 0.015mm. This is the core to ensure assembly accuracy and operational stability.
3.Precise fit tolerance (0 to +0.01mm) : For positioning precision holes, it is required that the hole diameter can only have a positive deviation to ensure that pin shafts or shaft parts can be smoothly assembled without interference, achieving precise clearance fit.
4.Functional surface treatment (nickel plating) : The coating is mainly used for rust prevention and corrosion resistance. At the same time, it can improve surface smoothness, reduce the coefficient of friction, and has a certain aesthetic effect. During processing, a uniform thickness space should be reserved for the coating.
Key processes and technologies
To meet the above requirements, the processing flow needs to be scientifically planned to give full play to the expertise of each CNC equipment:
1.CNC machining center
（1）Role: As the main processing force, undertake the majority of milling tasks.
（2）Task：
After heat treatment, the "initial reference reconstruction" is first carried out on the CNC using a precision vise or process plate to process the reference surfaces and holes that the subsequent processes rely on for positioning.
Complete semi-finishing and finishing of all complex cavities, curved surfaces, threaded holes and other features.
Pre-drill threading holes for slow wire electrical discharge machining.
2.Slow wire cutting
(1)Role: Specializing in high-precision holes and irregular profiles on high-hardness materials, its electrical discharge machining principle is not limited by the hardness of the material.
(2)Task:
Specialized in processing positioning precision holes with tolerances ranging from 0 to +0.01mm. Through multiple cutting techniques, micron-level precision and excellent surface finish can be stably achieved.
Process any internal and external irregular contours with high-precision requirements
3.CNC lathes
(1)Role: Responsible for ensuring the final accuracy of rotary features such as cylindrical surfaces and end faces
(2)Task:
Precisely turn the outer circle and end face of Φ145 to ensure that the shape and position tolerances such as roundness, cylindricity and end face runout meet the requirement of ≤0.015mm.
Hard turning must be carried out using super-hard tools such as CBN (cubic boron nitride).
4.Nickel plating
(1)Timing: It should be carried out after all machining, deburring and cleaning are completed
(2)The coating should be uniform and dense, with a thickness that complies with the design requirements (typically ranging from several micrometers to tens of micrometers), and should not affect the critical dimensions and precision of the parts.
Conclusion
The manufacturing of this part is a perfect combination of materials science, heat treatment processes and advanced numerical control technology. The core lies in:
1.Utilize the flexibility of CNC machining centers to complete the processing of complex structures.
2.Ultra-precision hole processing is achieved by taking advantage of the feature that slow wire cutting is not affected by hardness.
3.Rely on the professionalism of CNC lathes to ensure the accuracy of the rotating body.
4.Ultimately, nickel plating endows it with long-lasting service performance.
The entire process is closely linked and precisely coordinated. Eventually, a precision industrial product that meets all the strict technical conditions was successfully forged on the ultra-hard Cr12MoV material.
