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- Tungsten carbide cylindrical parts delivery qualification rate increased from 95% to 99.8%, with monthly customer incoming inspection complaints reduced to zero.
- Part surface roughness remained stable at Ra ≤ 0.1μm, with no visible appearance defects.
- The customer converted all ultra-high-precision tungsten carbide rotary component requirements to exclusive procurement, with annual order value increasing by 120% year-on-year.
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- Tungsten carbide cylindrical parts delivery qualification rate increased from 95% to 99.8%, with monthly customer incoming inspection complaints reduced to zero.
- Part surface roughness remained stable at Ra ≤ 0.1μm, with no visible appearance defects.
- The customer converted all ultra-high-precision tungsten carbide rotary component requirements to exclusive procurement, with annual order value increasing by 120% year-on-year.
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Customer Type
Domestic and international mid-to-high-end mold manufacturers, as well as regular purchasers of precision standard components, with continuous demand for tungsten carbide rotary parts.
Pain Points
Dimensional Accuracy Control
Tungsten carbide (cemented carbide) cylindrical parts are prone to exceeding tolerance limits (NG) during conventional cylindrical grinding due to improper grinding wheel selection or deviations in feed parameters, making it difficult to consistently achieve ±0.002mm accuracy.
Pain Points 1
Surface Damage Risk
High-hardness tungsten carbide (HRA 89–92) is extremely brittle. Without specialized treatment of fixture contact surfaces, even slight relative sliding can cause scratches and abrasions on the workpiece surface, resulting in appearance defects and scrapping.
Pain Points 2
Inspection Efficiency Challenge
The profile accuracy and hole position accuracy of slender tungsten carbide cores and punches rely on manual measuring tools, resulting in low inspection efficiency and high measurement errors, making it impossible to support 100% full inspection requirements.
Pain Points 3
Graded Precision Forming Process
A two-stage precision cylindrical grinding process is adopted. Rough grinding leaves a 0.005mm allowance for stress release, while finish grinding uses ultra-fine resin-bonded diamond wheels with micro-feed control. This reliably locks dimensional accuracy within ±0.002mm, achieving roundness of ≤ 0.001mm.
Damage-Free Clamping & Protection Technology
All fixture surfaces in contact with tungsten carbide workpieces are treated with DLC (Diamond-Like Carbon) coatings or super-hard polyurethane pads, completely eliminating clamping slip marks and ensuring zero damage to precision surfaces.
Dedicated Inspection Fixtures & 100% Inspection
Customized profile comparison fixtures and hole position inspection gauges are developed according to part geometries. Combined with optical measurement systems, 100% full inspection is performed. Single-part inspection time is reduced by 50%, enabling precise dimensional screening and quality control.
Results / Outcomes
Tungsten carbide cylindrical parts delivery qualification rate increased from 95% to 99.8%, with monthly customer incoming inspection complaints reduced to zero.
99.8% Delivery Rate
Part surface roughness remained stable at Ra ≤ 0.1μm, with no visible appearance defects.
Ra ≤ 0.1μm
The customer converted all ultra-high-precision tungsten carbide rotary component requirements to exclusive procurement, with annual order value increasing by 120% year-on-year.
120% Order Growth
Capabilities Demonstrated
Full-Process Integration for Cemented Carbide Manufacturing
Possessing complete in-house processing capabilities covering powder metallurgy blank evaluation, precision grinding, and final full inspection.
Ultra-High Precision Dimensional Control
Mastering grinding wheel selection, dressing, and micro-feed grinding parameter systems tailored to cemented carbide characteristics, enabling mass production with ±0.001mm-level accuracy.
Comprehensive Damage-Free Machining Standards
Developed a complete protection standard for hard and brittle materials, covering the entire process from fixtures, cutting fluids, to handling and packaging, ensuring scratch-free processing.
100% Inspection & Efficient Fixture Design
Capable of rapidly designing dedicated inspection fixtures for different tungsten carbide cylindrical parts, enabling fast and reliable batch full inspection and ensuring zero defective products are shipped.
