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CORE DIVISION 04

Die Casting & Metal Stamping Division

High-Pressure Aluminum & Zinc Die Casting with Secondary CNC Trimming.

The Die Casting & Metal Stamping Division delivers high-volume structural metal hardware with complex thin-wall geometries and exceptional strength-to-weight ratios. Operating automated cold-chamber aluminum presses up to 1,600 tons and high-speed progressive stamping lines, we mass-produce automotive housings, heatsinks, motor chassis, and electronic brackets.

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Presses from 160T to 1,600T
Aluminum A380 & ADC12
Secondary 5-Axis CNC Trimming
Engineering Competencies & Capacity

Built for Precision, Scalability and Speed

Shenzhen Jinyihe Technology combines advanced multi-axis CNC machines, certified metrology, and deep production expertise to bring high-complexity parts to market with zero delays.

Cold Chamber Aluminum

High-pressure casting of A380, ADC12, and A360 alloys for structural, lightweight automotive parts.

Hot Chamber Zinc Casting

Precision Zamak 3 and Zamak 5 casting for micro-precision components with mirror finishes.

Progressive Die Stamping

High-speed automated coil stamping lines producing up to 500 parts per minute.

Secondary CNC Precision

Integrated CNC machining centers finish critical bearing journals, threads, and sealing o-ring grooves.

Engineering Focus & Technical Depth

In-Depth Manufacturing Analysis

Discover how our advanced machinery, certified cleanroom facilities, and strict quality control protocols ensure reliable execution for mission-critical hardware.

ARTICLE 01 High-Pressure Aluminum Die Casting: Strength & Speed
Engineering Deep Dive

High-Pressure Aluminum Die Casting: Strength & Speed

Producing Complex Thin-Walled Castings with Exceptional Heat Dissipation

For structural components that require higher mechanical strength and heat dissipation than plastic can provide, high-pressure aluminum die casting is the gold standard. Operating automated die casting machines from 160 to 1,600 tons of clamping force, JYH casts complex motor housings, LED heatsinks, and automotive gearbox shells with wall thicknesses down to 1.5mm.

Key Engineering Takeaways
  • A380 and ADC12 alloys offering excellent thermal conductivity and EMI shielding
  • Automated robotic ladle and spray systems ensuring zero porosity and thermal stability
  • Vacuum-assisted die casting eliminating gas entrapment for pressure-tight applications
ARTICLE 02 Precision Zinc Die Casting (Zamak 3 & Zamak 5)
Engineering Deep Dive

Precision Zinc Die Casting (Zamak 3 & Zamak 5)

High-Precision Micro-Features, Thin Walls, and Jewel-Like Surface Finishes

Zinc die casting offers lower melting temperatures and higher fluidity than aluminum, making it ideal for high-precision components like gears, lock mechanisms, and electronic connectors. Zamak 3 and 5 alloys allow wall thicknesses down to 0.8mm with draft angles as tight as 0.5°, while accepting chrome, nickel, and decorative electroplating without blistering.

Key Engineering Takeaways
  • Exceptional impact strength and dimensional stability with zero post-aging shrinkage
  • Tooling longevity exceeding 1,000,000 cycles due to low thermal shock on tool steel
  • High electrical conductivity and natural EMI/RFI shielding for RF electronic housings
ARTICLE 03 Integrated Secondary 5-Axis CNC Precision Finishing
Engineering Deep Dive

Integrated Secondary 5-Axis CNC Precision Finishing

Bringing As-Cast Blanks to Micro-Tolerances Down to ±0.01mm

Die casting produces near-net shapes fast, but critical bearing bores, valve seats, and precision threads require secondary CNC machining. JYH operates dedicated CNC trimming and machining cells right beside our die casting foundry. Dedicated multi-axis CNC machines locate off cast datum targets, machining sealing surfaces and tapping threads with sub-micron accuracy.

Key Engineering Takeaways
  • Hydraulic trim dies removing sprues, runners, and overflow flash in a single stroke
  • CNC milling of precision O-ring grooves and bearing seats down to ±0.01mm
  • Automated leak testing (air decay pressure test) validating casting integrity before shipment
ARTICLE 04 Progressive Metal Stamping & Deep Drawing Lines
Engineering Deep Dive

Progressive Metal Stamping & Deep Drawing Lines

High-Speed Mass Production for Shielding Cans, Terminals, and Brackets

For stamped electrical contacts, battery busbars, and deep-drawn metal cans, our stamping division utilizes multi-station progressive dies mounted in high-speed mechanical presses. Raw strip coil is fed automatically, undergoing blanking, piercing, forming, coining, and deep-drawing in continuous synchronized strokes at speeds up to 500 strokes per minute.

Key Engineering Takeaways
  • Progressive tooling designed with carbide punch inserts for multi-million cycle life
  • High-conductivity copper and beryllium copper stamping with selective gold plating
  • In-die tapping and automated optical sensor vision systems verifying hole presence
Technical Parameters & Capabilities

Die Casting & Stamping Technical Capabilities

Official engineering tolerances, machinery specifications, and production thresholds maintained at our Shenzhen plant.

Process Category Primary Alloys Clamping / Tonnage Range Typical Tolerance
Aluminum Die Casting A380, ADC12, A360 160 Ton to 1,600 Ton ±0.05 mm (As Cast) / ±0.01 mm (CNC Machined)
Zinc Die Casting Zamak 3, Zamak 5, ZA-8 50 Ton to 250 Ton ±0.03 mm (As Cast) / ±0.01 mm (CNC Machined)
Progressive Die Stamping Brass, Copper, SPCC, SUS 25 Ton to 300 Ton ±0.02 mm (0.0008 in) Continuous
Deep Drawn Metal Shells Stainless 304, Aluminum 1050 60 Ton to 400 Ton ±0.05 mm (Wall Uniformity)

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Customer Support & FAQs

Frequently Asked Questions

Direct answers regarding our manufacturing lead times, tolerances, certified materials, and global delivery.

We cast Aluminum alloys (A380, ADC12, A360) and Zinc alloys (Zamak 3, Zamak 5) for high-strength, lightweight, and heat-dissipating applications.
Yes. We have integrated CNC machining centers that perform secondary milling, drilling, boring, and tapping on as-cast parts to hold ±0.01mm tolerances.
We offer low-volume rapid die casting starting at 500 units, scaling up to mass production of 100,000+ units per month.
Yes. We utilize vacuum-assisted die casting, optimize overflow channels via Moldflow simulation, and perform 100% air-decay leak testing for pressure-tight parts.
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