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OEM Factory Carbon Steel Vehicle Folding Car Joint Lower Casting Parts

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Zeren offer lost wax investment casting, CNC machining, mold production, heat treatment and surface treatment with reliable quality, fast delivery, and customized solutions tailored to client needs.
  • VEA001

  • OEM

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Product Description


VM001 Product Overviews(1)(1)

The Folding Car Joint Lower Casting Part is a critical structural component in collapsible vehicle systems, manufactured through high-precision die casting or investment casting processes. Utilizing high-strength aluminum alloys (A360 or A380) or ductile iron (EN-GJS-500-7), this part enables smooth folding motion while maintaining rigidity under load. Designed with integrated bearing surfaces and reinforced pivot points, it withstands repetitive folding cycles without wear deformation. These castings meet stringent automotive OEM specifications for durability and safety in convertible roof mechanisms, folding seats, and retractable cargo solutions.


Product Name Folding car joint lower part
Standard /Non- Standard Non-Standard Products
Model VEA001
Material Carbon Steel
Classification Transport Tool Casting Part - Vehicle Accessories
Process Silica Sol Investment Casting +CNC machining
Certification ISO9001:2015 + SGS
Service OEM One-Stop Investment Casting &CNC Machining Service


Technical Parameters

Product General Specs
MaterialAustenitic stainless steel: 201, 303, 304, 316, 316L, 1.4581, scs14, scs16
Hardened stainless steel:17-4PH, 410, 420, 440C
Alloy cast steel: 4140, 4150, 4340, 8620, GS-25CrMo4
Casting alloy tool steel: CS-2, CS-7, CrWMn
Carbon steel: 1020, 1025(WCB), 1030, 1040, 1045, 1050
Weight1g-30kg
Casting toleranceCT4-CT7/GBT6414-1999; VDG Merkblad P690
Surface RoughnessRa1.6-Ra6.3
ThicknessMin 2mm (1mm in Micro-region)
Casting RadiusRound radius ≥0.3mm, Internal fillet radius≥0.5mm
Blind Hole DepthMax 30mm (Diamter 10mm)
MachiningTurning,Milling,Drilling,Boring,Threading, Grinding,CNC Machining & test equipment
Heat TreatmentAnnealing,Hardening, Normalizing,Carburizing, Aging
Surface FinishingBlack Oxide,Black Coating,Anti-Pollution Flashover Coating,Mirror Polish
Industry StandardsASTM, ICI, BS, DIN, JIS, ISO
Design SoftwarePro-E, UG,Solidworks, AutoCAD
File FormatIGS, STP, XT, PDF, JPEG, JPG


Product Uses & Advantage

Uses:

  1. Convertible Roof Systems – Serves as the foundational hinge component in soft-top and hardtop folding mechanisms, ensuring precise alignment and structural integrity during repeated opening/closing cycles.

  2. Collapsible Seating Arrangements – Provides robust pivot points for third-row stadium seats or fold-flat configurations in SUVs and minivans, supporting dynamic occupant loads.

  3. Retractable Cargo Solutions – Forms the load-bearing base for folding trunk dividers and expandable truck bed systems, maintaining stability when extended.

Advantages:

  1. Fatigue Resistance – Optimized grain structure from controlled solidification prevents crack propagation under 50,000+ folding cycles.

  2. Weight Efficiency – Hollow-core casting designs reduce mass by 30% versus steel counterparts while meeting equivalent strength requirements.

  3. Maintenance-Free Operation – Self-lubricating bronze bushings cast directly into pivot points eliminate periodic greasing needs.


                                                Automotive-Parts


Product Application

The Folding car joint lower part is a kind of Vehicle Accessories. Here are some specific application scenarios of Vehicle Accessories:


  1. Electric Convertibles – Lightweight aluminum versions for emerging EV roadsters where weight savings directly impact battery range.

  2. Off-Road Vehicles – Heavy-duty ductile iron variants for folding steps and rock sliders exposed to impact loads.

  3. Commercial Fleet Vehicles – Corrosion-resistant designs for taxi partition hinges and delivery van load floor systems.



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