Aluminum Alloy Die-Cast Automotive Parts - Qingdao Xinlongji, 10+ Years Expert & One-Stop Manufacturing Solution Provider
Qingdao Xinlongji Metal Manufacturing Co., Ltd. was established in 2012 and is strategically located in Qingdao, Shandong—a crucial industrial and port city in China. As a professional integrated industrial and trade enterprise integrating R&D, production and sales, we are dedicated to providing global clients with one-stop manufacturing solutions covering precision mold design, aluminum alloy die casting, post-processing, and finished part delivery. With over 10 years of focused expertise in aluminum alloy die casting for the automotive industry, we specialize in the R&D, production and customization of high-precision aluminum alloy die-cast automotive parts, delivering industry-compliant, cost-effective products to global B2B customers including automotive OEMs, auto parts suppliers, and powertrain system manufacturers. Leveraging our automotive-specific die casting technology, professional technical support, and strict quality control aligned with international standards, we have built long-term cooperative partnerships with renowned automotive brands across Europe, North America, and Asia.
Product Overview: Aluminum Alloy Die-Cast Automotive Parts
Our aluminum alloy die-cast automotive parts fully implement the core formula of "product name + core function + technical advantage + application scenario + quality guarantee", perfectly meeting the automotive industry's rigorous requirements for lightweight, high strength, and reliability. Product name: Aluminum alloy die-cast automotive parts (engine brackets, gearbox housings, battery pack frames, etc.); Core function: Reduce vehicle weight to improve fuel efficiency and electric vehicle range, bear structural loads for stable operation under harsh conditions (high temperature, vibration, humidity), and realize integrated structural design to reduce assembly processes and improve production efficiency; Technical advantage: Adopt high-pressure die casting technology combined with advanced mold flow simulation and precision mold manufacturing, ensuring uniform material density and high dimensional accuracy; selected aluminum alloys (ADC12, A380, A356+T6) have excellent thermal conductivity, corrosion resistance and machinability; Application scenario: Cover key automotive systems including powertrain (engine brackets, gearbox housings, oil pump bodies), chassis (suspension components, steering knuckles), body (door handles, bracket assemblies), and new energy vehicles (battery pack frames, motor housings, inverter casings); Quality guarantee: All products comply with IATF 16949 automotive quality management system, RoHS/REACH environmental standards, and automotive material safety requirements; customized services are provided based on clients' 3D drawings and vehicle model matching needs to ensure perfect assembly and performance.
Production Processes & Process Visualization
As a one-stop solution provider, we have mastered a complete set of core processes tailored to automotive aluminum alloy die casting, covering the entire chain from precision mold R&D to finished product delivery. High-pressure die casting is our core process, while we also provide supplementary processes such as CNC precision machining, surface treatment, heat treatment, and assembly to meet comprehensive processing needs. The full production process with traceability is visualized as follows:
Demand Communication & Technical Evaluation: Professional engineers with automotive die casting experience communicate with clients to clarify technical requirements (dimensional tolerance, mechanical properties, high-temperature resistance). We conduct mold flow simulation to predict potential defects (porosity, shrinkage) and optimize part structures.
Automotive-Grade Precision Mold Design & Manufacturing: Customize high-precision molds using H13/SKD61 heat-resistant die steel; adopt CNC precision machining for mold cavities and cores; conduct strict mold testing and debugging with automotive assembly fixtures to ensure dimensional accuracy and compatibility with die casting parameters.
Aluminum Alloy Melting & Refining: Select high-quality aluminum alloy ingots and melt them in professional electric resistance furnaces (temperature controlled at 650-720℃); implement three-stage refining (refining agent + online degassing + ceramic foam filtering) to remove impurities and gas, ensuring material purity (hydrogen content ≤ 0.15 ml/100g Al).
High-Pressure Die Casting: Use automotive-specific fully automatic die casting machines (160-1600 tons clamping force) to inject molten aluminum alloy into molds under high pressure (100-150 MPa); real-time monitor temperature, pressure, and speed to ensure uniform filling and dense part structure.
Demolding & Trimming: Use dedicated soft fixtures for smooth demolding to avoid deformation; remove sprue, runner, and burrs through mechanical trimming or CNC precision machining to ensure neat part edges.
Post-Processing & Surface Treatment: Conduct heat treatment (T6/T7) to improve mechanical properties (tensile strength, hardness); implement automotive-specific surface treatments (powder coating, anodizing, electrophoretic coating) according to client requirements; perform leak testing on sealed components (oil pump bodies, water pump housings) using air pressure testing equipment.
Comprehensive Quality Inspection: Set up three inspection links (in-process, semi-finished, finished product). Use precision equipment such as CMM (Coordinate Measuring Machine), 3D scanners, tensile testing machines, X-ray flaw detectors, and salt spray test chambers to inspect dimensions, mechanical properties, surface quality, and internal defects; conduct random sampling for high-temperature and vibration resistance tests to ensure product reliability.
Packaging & Shipping: Adopt automotive parts-specific anti-scratch, shockproof packaging (EPE foam, custom plastic pallets, vacuum packaging). Relying on Qingdao's port advantage, we cooperate with international logistics companies (DHL, FedEx, Maersk) to provide global door-to-door delivery services, simplifying transportation and customs clearance processes for clients.
Product Classification & Technical Parameters
3D Classification Table (Industry / Material / Part Type)
Industry Application | Material | Part Type | Remarks |
Passenger Car Industry | ADC12, A380, A356 | Engine brackets, gearbox housings, steering system components, door handle bases, window regulator brackets | IATF 16949 compliant, lightweight, dimensional accuracy ±0.03mm, low VOC |
Commercial Vehicle Industry | A380, A356+T6, ADC14 | Truck engine cylinder heads, suspension brackets, brake calipers, transmission housings | High strength (tensile strength ≥ 310MPa), wear-resistant, suitable for heavy-load conditions |
New Energy Vehicle Industry | A356, ADC12, High thermal conductivity aluminum alloy | Battery pack frames, motor housings, inverter casings, charging pile shells | High thermal conductivity (≥120 W/(m·K)), corrosion-resistant, flame-retardant (UL94 V0 optional) |
Automotive Aftermarket | ADC12, A380 | Replacement engine parts, suspension components, transmission housings, water pump bodies | Perfect match with original parts, cost-effective, short delivery cycle (10-15 working days) |
Technical Parameters Table
Parameter Item | Specification | Remarks |
Processing Precision | ±0.02mm - ±0.08mm | Achieved by high-pressure die casting + CNC precision machining; adjustable according to part complexity |
Material Range | Aluminum alloy: ADC12, A380, A356, A356+T6, ADC14, Custom aluminum alloys | All materials pass SGS, RoHS, REACH certification; automotive-grade materials meet IATF 16949 requirements |
Surface Treatment Options | Powder coating, Anodizing (natural/black/colorful), Electrophoretic coating, Passivation, Spray painting | Meet automotive corrosion resistance requirements (salt spray test ≥ 500 hours); coating adhesion ≥ 4B (ASTM D3359) |
Minimum / Maximum Size | Minimum: 10mm × 8mm × 5mm; Maximum: 1200mm × 800mm × 300mm | Larger sizes available with 1600-2500 tons die casting machines; weight range: 0.05kg - 50kg |
Production Cycle | Sample Order: 8-15 Working Days (including mold testing); Mass Production: 15-30 Working Days | Urgent orders supported (10-20 working days for mass production); suitable for automotive parts emergency replenishment |
Common Aluminum Alloy Die Casting Issues & Professional Solutions
Common Issues | Root Causes | Our Solutions |
Internal Porosity & Gas Holes | Insufficient aluminum alloy refining, high moisture in die lubricants, improper die casting parameters | Adopt three-stage refining (refining agent + online degassing + ceramic foam filtering); use low-moisture (≤0.5%) lubricants; optimize parameters (reduce filling speed by 10-15% in complex areas, increase holding pressure by 5-8%) |
Shrinkage Cavities & Sink Marks | Uneven wall thickness, insufficient holding pressure, improper cooling system design | Optimize part structure via mold flow simulation (wall thickness variation ≤15%); increase holding pressure and extend time by 20%; design targeted cooling channels (diameter ≥8mm) for thick-walled areas |
Dimensional Deviation & Part Deformation | Die deformation, uneven cooling, residual internal stress | Use H13 heat-resistant die steel and monthly calibration; optimize cooling system (surface temperature difference ≤10℃); conduct T6 heat treatment to eliminate internal stress |
Poor Surface Quality (Oxide Scale, Burrs) | Impurities in molten aluminum, improper die gap, rough die surface | Filter molten aluminum with 30-50ppi ceramic foam filters; adjust die gap to 0.02-0.03mm; polish die surface to Ra ≤0.08μm; post-trim with CNC machining |
Successful Customer Case
Client Background: A leading European automotive parts supplier specializing in powertrain components for mid-sized passenger cars.
Client Demand: Custom A356+T6 aluminum alloy die-cast engine brackets; requirements: dimensional accuracy ±0.03mm, tensile strength ≥310MPa, powder coating (salt spray test ≥500 hours), 200,000 pieces mass production, 28-day delivery, one-stop service from mold design to finished product.
Our Solutions: 1. Assigned a 6-person professional engineer team (8+ years automotive die casting experience) to communicate with the client; conducted 3 rounds of mold flow simulation to optimize die structure and filling path, solving potential porosity issues; completed mold design and manufacturing in 10 days. 2. Selected high-quality A356 ingots, implemented three-stage refining to ensure material purity; pre-tested material performance to meet tensile strength requirements. 3. Adopted "high-pressure die casting + T6 heat treatment + CNC machining + automatic powder coating" integrated process; allocated 4 dedicated 800-ton die casting machines and 3 CNC lines for priority production, with real-time parameter monitoring. 4. Implemented full-process inspection: CMM for 100% dimensional testing, X-ray flaw detectors for internal defects (detection rate ≥99%), tensile testing for 1% of products, salt spray testing for 50 samples. 5. Utilized Qingdao Port's advantage, packaged with anti-scratch pallets, cooperated with Maersk for sea freight,and completed customs clearance in advance.
Cooperation Results: Delivered 1 day ahead of schedule, product pass rate 99.92%. Client testing confirmed tensile strength 325-335MPa, salt spray resistance 600+ hours, and 100% assembly qualification rate with the OEM's engine. Established long-term strategic cooperation, annual order volume increased to 800,000 pieces covering multiple powertrain components.
Our Core Competitiveness
With over 10 years of industry experience, Qingdao Xinlongji has formed five core competitive advantages to serve global automotive clients:
Professional Technical Team: 35+ professional engineers with 5-15 years of experience, including 4 senior engineers specializing in automotive aluminum die casting; proficient in mold flow simulation (Moldflow) and complex mold design; familiar with IATF 16949 and ISO9001 standards; provide 24-hour technical response and one-stop solutions from product optimization to mass production.
Strong Production Capacity: 8,000+㎡ factory area, equipped with 15+ advanced fully automatic die casting machines (160-1600 tons) and 50+ CNC machining equipment; dedicated automotive parts production line with monthly capacity of 500,000+ pieces, supporting large-batch orders and urgent replenishment.
Strict Quality Management System: Certified by ISO9001:2015 and IATF 16949; 3 independent quality inspection workshops equipped with CMM, 3D scanners, X-ray flaw detectors, and salt spray test chambers; full-process quality control (IPQC, FQC, OQC) ensuring 99.8% product pass rate.
Improved Supply Chain: Established long-term stable cooperation with high-quality aluminum alloy raw material suppliers; relied on Qingdao's port advantage to optimize logistics links, reducing transportation costs and shortening delivery cycles.
Comprehensive Service Guarantee: Support global shipping to 150+ countries (cooperating with DHL, FedEx, Maersk); professional foreign trade and customs clearance team familiar with automotive parts export procedures; 1-year quality guarantee; one-stop service from mold design to delivery, reducing clients' procurement costs.
Why Choose Qingdao Xinlongji?
Choosing Qingdao Xinlongji as your aluminum alloy die-cast automotive parts partner means gaining professionalism, precision, and reliability that meet the automotive industry's rigorous standards. Key reasons for global client cooperation:
10+ years of focused experience in automotive aluminum die casting, deeply understanding global automotive industry technical requirements, quality standards, and production scheduling, avoiding new product development trial and error costs.
One-stop full-chain service covering mold design, die casting, heat treatment, machining, surface treatment, and assembly, ensuring consistent quality and simplifying procurement processes.
Quantifiable quality assurance (99.8% pass rate) and authoritative certifications (IATF 16949, ISO9001), ensuring products meet global automotive OEM access standards.
Flexible customization: Support small-batch trial production (MOQ 50 pieces) for new vehicle models and large-batch mass production; customize according to 3D drawings and special performance requirements.
Geographical advantage: Located in Qingdao port city, convenient sea-air transportation shortens global delivery by 3-5 working days; professional logistics team provides door-to-door service, solving international transportation and customs clearance problems.
Proven successful cases with European and North American automotive brands, rich experience in matching OEM production schedules, ensuring on-time delivery and stable supply.
Contact Us
If you have custom aluminum alloy die-cast automotive parts needs or want to learn more about our one-stop solutions, please contact us. We will provide detailed product information, free quotes, and sample services within 48 hours. Looking forward to establishing long-term stable cooperation to support your automotive product development and production!
