Fine Blanking Parts Wholesale

Fine Blanking Parts

-- Steady & Reliable Manufacturer --

Yuyao Hongli Optoelectronics Co., Ltd. is a leading OEM source manufacturer of Fine Blanking Parts, delivering high-precision flat-sheared metal components with 100% smooth cut edges, superior flatness, and exceptionally tight dimensional tolerances. Situated in Yuyao, Zhejiang, our 5,000-square-meter facility houses specialized triple-action fine blanking presses, high-precision hydraulic systems, and automated double-disc surface grinders. We process medium-to-heavy gauge carbon steel, alloy steel, stainless steel, aluminum, and copper plates up to 10.0mm in thickness. Fine blanking combines high triple-action force with minimal die clearance鈥攑roducing finished parts that eliminate secondary machining, milling, or reaming. Partner with Yuyao Hongli for automotive gear blanking, brake components, seat mechanisms, and direct-factory contract manufacturing.

MANUFACTURING CAPABILITIES

Equipment and process capabilities

From mold design to batch stamping, we cover production needs of different tonnages and precision levels.

  • 01

    Triple-Action High-Force Fine Blanking

    Utilizing specialized fine blanking presses with v-ring impinger forces, counter-pressure, and main shearing force, we achieve 100% fully sheared, tear-free cut edges.

  • 02

    Thick-Gauge Heavy Precision Shearing

    Our heavy fine blanking lines process thick carbon steel and alloy plates up to 10.0mm in thickness, producing structural components with extreme load resistance.

  • 03

    High-Precision In-Die Coining & Countersinking

    Integrated fine blanking dies perform precision countersinking, chamfering, semi-piercing, and gear-tooth forming directly within the press stroke.

  • 04

    Double-Disc Grinding & Fine Deburring

    Automated double-disc surface grinders and vibratory mass finishing systems achieve strict parallel flatness and remove minor die burrs.

SPEC · Overview of Key Equipment Parameters

Equipment TypeTonnage / SpecificationMachinable MaterialTypical Processing Thickness
Triple-Action Fine Blanking Press100T - 400T Specialized FB PressQ235, Q345, 16Mn, 42CrMo, SUS304, Copper1.0mm - 10.0mm Heavy Steel Plate
Automated Double-Disc Surface GrinderHigh-Precision Continuous GrinderFine Blanked Steel Plates & GearsFlatness & Parallelism down to 0.005mm
High-Frequency Vibratory Deburring Unit600L Mass Finishing SystemFine Blanked Metal ComponentsEdge Radiusing & Surface Smoothing
In-House Tooling Wire EDM & CNCSub-Micron Precision Wire CuttersSpecialized Powder Metallurgy Die SteelsUltra-Tight Die Clearance Fabrication
QUALITY CONTROL

Full-process quality control system

From incoming material inspection to full outgoing inspection, key processes are equipped with inspection points to ensure batch consistency.

100% Sheared Edge & Surface Finish Inspection

Verifying total shear surface coverage and freedom from die tears or fractures.

  • Optical magnification inspection checking for 100% clean shear zone (zero die break).
  • Surface roughness profilometer checking cut edges (Ra values down to 0.4 - 0.8 碌m).
  • Optical measurement of edge die-roll and burr height limits.

Flatness, Parallelism & CMM Audit

Ensuring micro-level planarity on heavy-gauge structural plates and gears.

  • Laser flatness gauge measuring planarity across critical clamping surfaces.
  • 3D Coordinate Measuring Machine (CMM) checking pitch diameter and tooth profiles on fine blanked gears.
  • Double-disc parallelism testing maintaining tolerances down to 0.005mm.

Material Tensile Strength & Hardness Testing

Ensuring heavy-duty carbon and alloy steel plates meet structural load requirements.

  • Universal tensile testing machine verifying yield strength on raw steel plates.
  • Rockwell and Vickers hardness testing across fine blanked shear zones.
  • XRF chemical composition analysis for incoming metal batches.
SURFACE FINISHING

Surface treatment process

Depending on the usage environment and appearance requirements of the parts, we offer anti-corrosion, wear-resistant, or decorative surface treatment solutions.

Finishing ProcessApplicable MaterialPrimary FunctionTypical Application
Double-Disc Precision GrindingCarbon Steel, Alloy Steel, Stainless SteelAchieves extreme surface flatness, tight thickness tolerance, and parallel surfacesAutomotive brake backing plates, clutch disks, transmission gears
Trivalent Zinc / Zinc-Nickel PlatingFine Blanked Carbon Steel PlatesProvides high-performance corrosion protection against severe environmental exposureAutomotive door latch pawls, seat recliner plates, brake hardware
Phosphate Coating / OilingHeavy Structural Alloy Steel PartsActs as an oil-retaining corrosion barrier and wear-reducing friction coatingInternal transmission cams, timing chain sprockets, hydraulic valve plates
Thermal Nitrocarburizing (Case Hardening)Alloy Steel Gears & LeversSignificantly increases surface hardness and wear resistance while maintaining core toughnessSeat recliner gears, parking lock pawls, window regulator gears
Note: The above is a standard process list. Specific film thickness, color, and salt spray resistance rating can be customized according to customer drawings.
APPLICATIONS

Main application areas

Our products are widely used in industries that require high structural strength and precision consistency.

Automotive Seat, Door & Safety Systems

High-strength fine blanked structural parts engineered for automotive safety and adjustment mechanisms.

  • Automotive seat recliner gear sectors and locking pawls
  • Door latch mechanism levers and strike plates
  • Seat belt retractor teeth and locking cams

Automotive Powertrain & Brake Systems

Thick-gauge fine blanked parts built for high torque transmission and braking friction.

  • Automatic transmission clutch plates and drive sprockets
  • Brake system backing plates and anti-rattle clips
  • Engine timing chain sprockets and oil pump gear blanks

Industrial Machinery & Hydraulic Valves

Heavy fine blanked plates designed for high pressure fluid seal surfaces and mechanical drives.

  • Hydraulic pump valve plates and distributor discs
  • Industrial power tool gear sectors and ratchets
  • Commercial HVAC compressor valve plates
PRODUCTION / FACTORY ADVANTAGES

Factory production advantages

With its own factory and equipment, the company ensures stable delivery times and controllable costs.

20+ Years of Fine Blanking Expertise

Yuyao Hongli brings deep technical mastery in triple-action press setup, V-ring impinger design, and micro-clearance tooling.

Elimination of Secondary Machining

Fine blanking delivers 100% smooth sheared edges and tight tolerances, replacing costly milling, drilling, and reaming operations.

Integrated Tooling, Grinding & Deburring

Our facility combines specialized toolmaking, fine blanking presses, double-disc grinding, and heat treatment in Yuyao, Zhejiang.

CUSTOM MANUFACTURING PROCESS

Customized production process

From receiving drawings to batch delivery, standardized processes ensure traceability at every stage.

  • 1. Print Engineering & Fine Blanking DFM

    Engineers analyze part geometry, evaluate material shearability, calculate V-ring forces, and design triple-action tooling.

  • 2. Specialized Tooling Build & Wire EDM

    Our toolroom machines fine blanking dies using premium powder metallurgy steels with extremely tight punch-to-die clearances.

  • 3. Press Tryout & First Article Inspection (FAI)

    Sample parts run on triple-action presses, undergoing complete shear edge checks, 3D CMM inspection, and flatness testing.

  • 4. Mass Fine Blanking, Grinding & Deburring

    High-tonnage presses stamp parts, followed by double-disc grinding for parallelism and vibratory deburring.

  • 5. Heat Treatment, Plating & Export Shipping

    Parts undergo case hardening or plating, final CMM quality audits, and rust-proof export packaging.

FAQ

Frequently Asked Questions

Here are some questions that clients often ask before cooperating with us.

What is the main difference between conventional metal stamping and fine blanking?

Conventional stamping produces a sheared edge that is partially smooth and partially fractured (die break); fine blanking uses triple-action forces to produce a 100% smooth, fully sheared edge with superior flatness and tighter tolerances.

What plate thickness can Yuyao Hongli process with fine blanking?

We can fine blank carbon steel, alloy steel, stainless steel, and copper plates ranging from 1.0mm up to 10.0mm in thickness.

Does fine blanking eliminate secondary machining operations?

Yes, fine blanking produces smooth functional edges, holes, and gear teeth directly off the press, eliminating milling, broaching, reaming, and drilling steps.

What edge surface roughness can be achieved with fine blanking?

Fine blanking delivers cut edge surface roughness values ranging from Ra 0.4 碌m to Ra 0.8 碌m directly from the press.

About Us
Yuyao Hongli Optoelectronics Co., Ltd.
Yuyao Hongli Optoelectronics Co., Ltd.
Yuyao Hongli Optoelectronics Co., Ltd. is a comprehensive enterprise with over 20 years of experience in the manufacturing industry. Located in the Yangming Science and Technology Industrial Park of Yuyao, Zhejiang Province, it enjoys convenient transportation and a solid industrial foundation. As a famous China Fine Blanking Parts Suppliers and Fine Blanking Parts Factory, founded in 2000, formerly known as Yuyao Hongli Optoelectronics Educational Instruments Co., Ltd., the company is wholly owned by a natural person, with Xie Gang as the legal representative. Its registered capital of 500,000 yuan has been fully paid up, and it has maintained its continued development through stable operations.
Relying on a 5,000-square-meter modern factory and multiple stamping workshops, the company has built a diversified product system. Its core businesses cover the manufacturing, processing and wholesale and retail of educational instruments, optical instruments, household electric heaters, small household appliances, auto parts, hardware and plastic products, etc. At the same time, it operates and acts as an agent for the import and export trade of goods and technologies, and its products are sold at home and abroad.
The company brings together industry management elites and senior engineers to form a mature R&D and management team. Adhering to the business philosophy of "integrity and pragmatism," it is committed to providing customers with high-quality products and comprehensive after-sales service. Leveraging its diversified portfolio, certification guarantees, and import/export advantages, the company actively expands cooperation both domestically and internationally, and is willing to establish long-term and stable trade partnerships with partners from all sectors, continuously striving forward in the wave of intelligent and high-end development in the manufacturing industry.
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