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Engineered for the most demanding industrial environments, this precision measurement core component is forged from premium Cr12MoV cold working die steel. Through rigorous thermal processing, the material achieves an ultra-high hardness grade of HRC55-60, providing a foundation of exceptional durability and structural rigidity. The manufacturing workflow integrates a sophisticated array of advanced numerical control technologies, including rigid CNC lathes, slow wire electrical discharge machining (EDM), and multi-axis CNC machining centers. This synchronized approach guarantees micron-level geometric accuracy across all critical dimensions. Key shape and position tolerances are strictly held at ≤0.015mm, while the essential positioning reference holes maintain a precise fit tolerance of 0~+0.01mm. To complete the component, a uniform nickel plating surface treatment is applied. This finishing step not only fortifies the exterior against corrosive elements but also imparts a smooth, frictionless tactile feel, ensuring optimal surface functionality. These components serve as the critical backbone in automated machinery, complex mold assemblies, and specialized inspection fixtures, where absolute dimensional stability dictates operational success.
1. Foundation Material: Constructed from Cr12MoV die steel, a specialized high-carbon, high-chromium alloy. This specific metallurgy is recognized across international manufacturing standards (aligning seamlessly with stringent ISO, DIN, and JIS material specifications) for its deep hardenability, formidable wear resistance, and unyielding dimensional stability under thermal stress. The dense, weighty feel of the steel reflects its structural integrity, making it the definitive choice for precision molds, heavy-duty fixtures, and the internal core mechanisms of automated production lines.
2. Thermal & Surface State: The raw material undergoes a precise quenching and tempering cycle to lock in a final hardness that reaches HRC55-60. Following this intense thermal conditioning, a specialized nickel plating is metallurgically bonded to the surface, creating a protective barrier that feels exceptionally smooth to the touch while resisting environmental degradation over prolonged operational cycles.
3. Geometric Profile: The component features a robust rotary body structure, engineered with exact external dimensions of Φ145 × 165. This substantial cylindrical form factor is designed to integrate flawlessly into larger mechanical housings, providing a stable center of gravity and minimizing vibration during high-speed dynamic operations.
4. Architectural Features: The internal and external architecture includes flawlessly turned outer circles, perfectly flat end faces, and intricate internal cavities. Most critically, it houses the primary positioning reference holes, which act as the absolute true north for all subsequent mechanical alignments, ensuring that complex assemblies come together with zero guesswork.
1. Ultra-High Hardness Profile (HRC55-60): Achieving this extreme hardness tier dictates that all critical finishing operations occur post-heat treatment. This "hard state processing" demands immense rigidity from cutting tools and equipment to prevent deflection. The resulting surface is virtually impervious to abrasive wear, ensuring decades of reliable service in continuous-cycle machinery and heavy-load applications.
2. Strict Shape and Position Tolerances (≤0.015mm): Every geometric relationship—parallelism, perpendicularity, and coaxiality—between the functional faces and internal bores is rigorously confined to a maximum deviation of 0.015mm. Verified through advanced Coordinate Measuring Machines (CMM) and optical comparators, this microscopic precision is the absolute core requirement for guaranteeing flawless assembly accuracy and eliminating vibrational instability during operation.
3. Precise Fit Tolerance (0 to +0.01mm): The positioning precision holes are machined with a strict unidirectional tolerance. By ensuring the hole diameter only exhibits a positive deviation of 0 to +0.01mm, mating pin shafts and rotational components glide into place with a satisfying, airtight mechanical resistance. This achieves a perfect clearance fit without any risk of interference, galling, or operational slop.
4. Functional Surface Treatment (Nickel Plating): The electrodeposited nickel coating serves as a formidable shield against rust and chemical corrosion in harsh industrial atmospheres. Beyond protection, the plating refines the surface topology, significantly reducing the coefficient of friction for moving parts and leaving behind a brilliant, uniform metallic luster. During the initial machining phases, precise volumetric space is mathematically reserved to accommodate the exact micron thickness of this coating, ensuring final dimensions remain completely uncompromised.
To consistently meet these uncompromising technical requirements, the production workflow is scientifically sequenced to harness the specific strengths of advanced numerical control equipment, ensuring every geometric feature is executed flawlessly:
（1）Strategic Role: Acting as the primary material removal force, these multi-axis centers handle the most complex milling tasks, carving out the foundational geometry from the hardened steel matrix.
（2）Execution Tasks:
Following the intense heat treatment phase, an "initial reference reconstruction" is executed on the CNC platform. Utilizing precision hydraulic vises and calibrated process plates, the critical reference surfaces and foundational holes are established. These serve as the absolute zero-point positioning guides for all subsequent machining stages.
The equipment performs meticulous semi-finishing and final finishing passes across all complex internal cavities, sweeping curved surfaces, and intricate threaded hole patterns, maintaining absolute structural integrity throughout the process.
Strategic threading holes are pre-drilled to exact depths, preparing the component for the highly specialized slow wire electrical discharge machining phase without inducing thermal stress.
(1)Strategic Role: Dedicated to generating high-precision internal bores and complex irregular profiles within the hardened material. Because EDM utilizes controlled spark erosion rather than physical cutting force, it operates completely independent of the material's extreme hardness.
(2)Execution Tasks:
This technology is exclusively deployed to finalize the positioning precision holes, holding the demanding tolerance window of 0 to +0.01mm. Through a sequence of multiple refined cutting passes, the wire achieves stable micron-level accuracy while leaving behind a remarkably smooth, mirror-like internal surface finish.
The system effortlessly navigates both internal and external irregular contours, ensuring that even the most complex geometric requirements are met with zero mechanical stress applied to the delicate features of the part.
(1)Strategic Role: Tasked with finalizing the critical rotary features, ensuring the cylindrical surfaces and flat end faces achieve perfect concentricity and minimal runout.
(2)Execution Tasks:
The lathes execute precise turning operations on the outer circle and end faces of the Φ145 dimension. This guarantees that critical shape and position tolerances—specifically roundness, cylindricity, and end face runout—strictly adhere to the ≤0.015mm specification.
Because the material is in its hardened state, this hard turning phase relies exclusively on super-hard cutting inserts, such as CBN (cubic boron nitride), which cleanly shear the hardened steel without rapid tool degradation or surface tearing.
(1)Process Timing: The plating bath is introduced only after every single machining, micro-deburring, and ultrasonic cleaning cycle has been flawlessly completed, ensuring a pristine substrate for adhesion.
(2)Coating Specifications: The electroplated layer is engineered to be exceptionally uniform and dense. The thickness is carefully controlled to align with original design calculations (typically maintained between several micrometers to tens of micrometers). This precision ensures that the critical dimensions and tight tolerances established during machining are perfectly preserved, resulting in a flawless final assembly.
The realization of this measurement component represents the apex of material science, controlled thermal processing, and advanced numerical control machining. The success of this industrial asset is rooted in four foundational pillars:
1. Leveraging the dynamic flexibility and multi-axis capabilities of modern CNC machining centers to accurately carve out complex, multi-layered structural geometries from solid billets.
2. Achieving ultra-precision bore dimensions by capitalizing on the unique physical properties of slow wire EDM, which effortlessly vaporizes material regardless of its extreme hardness profile.
3. Depending on the rigid stability and specialized tooling of CNC lathes to guarantee the absolute concentricity and accuracy of the main rotating body, eliminating rotational wobble.
4. Applying a meticulously controlled nickel plating that seals the component, endowing it with long-lasting environmental resistance and superior kinetic performance.
Every phase of this manufacturing journey is tightly integrated and precisely coordinated. Eventually, a precision industrial product that meets all the strict technical conditions was successfully forged on the ultra-hard Cr12MoV material, ready to anchor the most demanding mechanical systems.
Beyond precision manufacturing, a complete ecosystem of technical support and logistics is provided to ensure seamless integration into large-scale production environments and specialized engineering projects.
Customization & Engineering Support | Comprehensive OEM/ODM services are available, accepting native 3D/2D CAD files across all major design software. The engineering team collaborates directly with technical staff to accommodate custom geometric modifications, specialized tolerance requests, and unique material treatments. |
Order Process & Lead Time | From initial blueprint evaluation and rapid prototyping to full-scale mass production, the standardized workflow guarantees efficiency. Strict production schedules are maintained to ensure high on-time delivery rates, keeping critical industrial procurement cycles perfectly on track. |
Packaging & Logistics | To protect the micron-level precision and anti-rust properties during transit, each component is secured in independent, impact-resistant VCI (Volatile Corrosion Inhibitor) vacuum packaging. Flexible global freight solutions are tailored to align with specific inventory timelines and destination requirements. |
After-Sales & Service Commitment | Every production batch is backed by comprehensive dimensional inspection reports and material certifications. A dedicated technical support team provides rapid response troubleshooting and continuous engineering consultation to maximize the lifecycle and performance of the components. |
