Zinc Alloy Die Casting Parts - Qingdao Xinlongji, 10+ Years Expert & One-Stop B2B Manufacturer
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, zinc alloy die casting, post-processing, and finished part delivery. With over 10 years of focused expertise in zinc alloy die casting, we specialize in the R&D, production and customization of high-precision zinc alloy die casting parts for diverse industries. We deliver industry-compliant, cost-effective products to global B2B customers including automotive OEMs, electronic device manufacturers, medical equipment suppliers, and hardware component distributors. Leveraging our zinc alloy-specific die casting technology, professional technical support, and strict quality control aligned with international standards, we have built long-term cooperative partnerships with renowned brands across Europe, North America, and Asia.
Product Overview: Zinc Alloy Die Casting Parts
Our zinc alloy die casting parts fully implement the core formula of "product name + core function + technical advantage + application scenario + quality guarantee", giving full play to the unique properties of zinc alloy and meeting the rigorous requirements of various industries for precision, durability and cost-effectiveness. Product name: Zinc alloy die casting parts (automotive hardware, electronic enclosures, medical components, etc.); Core function: Provide stable structural support, realize precise assembly matching, bear mechanical loads, resist wear and corrosion, and meet the functional requirements of different terminal products (e.g., electrical conductivity, electromagnetic shielding for electronic parts; impact resistance for automotive parts); Technical advantage: Adopt high-pressure zinc alloy die casting technology combined with advanced mold flow simulation and precision mold manufacturing; zinc alloy materials (Zamak 3, Zamak 5, ZA-8) have excellent fluidity, enabling complex-shaped parts to be formed in one step with high dimensional accuracy and uniform material density; the finished parts feature good mechanical properties, wear resistance and easy machinability; Application scenario: Widely used in automotive industry (door locks, window regulators, gearbox components), electronic industry (connector housings, switch shells, heat sinks), medical industry (small medical device components, instrument brackets), hardware industry (lock bodies, handle components) and consumer electronics industry (camera brackets, remote control shells); Quality guarantee: All products comply with ISO9001:2015, IATF 16949 (for automotive parts) and RoHS/REACH environmental standards; customized services are provided based on clients' 3D drawings, sample prototypes and industry-specific requirements to ensure perfect matching with terminal products.
Production Processes & Process Visualization
As a one-stop solution provider, we have mastered a complete set of core processes tailored to zinc alloy die casting, covering the entire chain from precision mold R&D to finished product delivery. High-pressure zinc alloy die casting is our core process, while we also provide supplementary processes such as CNC precision machining (milling, drilling, tapping), surface treatment (electroplating, powder coating, passivation), and assembly to meet the diverse needs of different industries. The full production process with traceability is visualized as follows:
Demand Communication & Technical Evaluation: Professional engineers with zinc alloy die casting experience communicate with clients to clarify technical requirements (dimensional tolerance, mechanical properties, industry standards, functional requirements). We conduct mold flow simulation targeting the characteristics of zinc alloy (excellent fluidity, low melting point) to predict potential defects (shrinkage, porosity, flow marks) and optimize part structures and mold designs.
Precision Mold Design & Manufacturing: Customize high-precision molds for zinc alloy die casting using H13/SKD61 heat-resistant die steel; adopt CNC precision machining (milling, grinding, EDM) for mold cavities and cores to ensure mold accuracy (±0.01mm); conduct strict mold testing and debugging with actual assembly fixtures to verify assembly compatibility and dimensional stability of cast parts.
Zinc Alloy Melting & Refining: Select high-quality zinc alloy ingots (Zamak 3, Zamak 5, ZA-8) and melt them in professional electric resistance furnaces (temperature controlled at 419-450℃, matching the low melting point characteristics of zinc alloy); implement two-stage refining (refining agent addition + online degassing) to remove impurities and gas, ensuring material purity and avoiding internal defects in cast parts.
High-Pressure Die Casting: Use zinc alloy-specific fully automatic die casting machines (80-800 tons clamping force) to inject molten zinc alloy into molds under high pressure (80-120 MPa); real-time monitor temperature, pressure, and filling speed to give full play to the fluidity advantage of zinc alloy, ensuring uniform filling of complex-shaped parts and dense part structure.
Demolding & Trimming: Use dedicated soft fixtures for smooth demolding to avoid deformation of zinc alloy parts (zinc alloy has good toughness but low hardness); remove sprue, runner, and burrs through mechanical trimming and CNC precision deburring to ensure neat edges and avoid interference with assembly.
Post-Processing & Surface Treatment: For parts requiring high precision, adopt CNC precision machining to ensure dimensional accuracy (±0.01mm); implement industry-specific surface treatments according to client requirements: 1) Electroplating (nickel, chrome, zinc plating): Enhance corrosion resistance and decorative effect, suitable for electronic and hardware parts; 2) Powder coating: Provide excellent weather resistance and impact resistance, suitable for automotive and outdoor parts; 3) Passivation: Improve surface corrosion resistance for internal structural parts; all surface treatments meet relevant industry standards (e.g., automotive salt spray test ≥ 480 hours).
Comprehensive Quality Inspection: Set up three inspection links (in-process, semi-finished, finished product) for zinc alloy die casting parts: 1) Dimensional inspection: Use CMM (Coordinate Measuring Machine) and 3D scanners for 100% full-size inspection; 2) Mechanical property inspection: Conduct tensile testing, hardness testing and wear testing on sampled products; 3) Surface and internal defect inspection: Use visual inspection, salt spray test chambers, and X-ray flaw detectors to inspect surface quality and internal porosity; 4) Functional testing: Conduct targeted functional tests according to industry requirements (e.g., electrical conductivity test for electronic parts, load-bearing test for structural parts).
Packaging & Shipping: Adopt anti-scratch, shockproof packaging tailored for zinc alloy parts (EPE foam inner lining, partitioned plastic boxes, carton packaging) to avoid surface scratches and deformation during transportation. Relying on Qingdao's port advantage, we cooperate with international logistics companies (DHL, FedEx, Maersk) to provide global 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 |
Automotive Industry | Zamak 5, ZA-8 | Door lock components, window regulator gears, gearbox brackets, steering system small parts | IATF 16949 compliant, high impact resistance, wear-resistant, suitable for automotive dynamic components |
Electronic Industry | Zamak 3, Zamak 5 | Connector housings, switch shells, heat sinks, camera brackets | High precision (±0.01mm), good electrical conductivity, electromagnetic shielding optional |
Medical Industry | Zamak 3, Food-grade zinc alloy | Small medical device components, instrument brackets, handle parts | RoHS compliant, non-toxic, smooth surface, easy to sterilize |
Hardware & Consumer Electronics | Zamak 3, Zamak 5 | Lock bodies, handle components, remote control shells, toy parts | Cost-effective, good decorative effect, customizable surface treatment |
Technical Parameters Table
Parameter Item | Specification | Remarks |
Processing Precision | ±0.01mm - ±0.05mm | Achieved by high-pressure zinc alloy die casting + CNC precision machining; superior to aluminum alloy in small-size part precision |
Material Range | Zinc alloy: Zamak 3, Zamak 5, ZA-8, ZA-12, Custom zinc alloys | All materials pass SGS, RoHS, REACH certification; automotive-grade materials meet IATF 16949 requirements |
Surface Treatment Options | Electroplating (nickel/chrome/zinc), Powder coating, Passivation, Spray painting, Anodizing | Meet industry-specific corrosion resistance requirements; electroplating parts pass 480-hour salt spray test; color customizable |
Minimum / Maximum Size | Minimum: 5mm × 3mm × 2mm; Maximum: 800mm × 600mm × 300mm | Covers micro-precision parts to medium-sized structural parts; weight range: 0.01kg - 15kg |
Production Cycle | Sample Order: 5-10 Working Days (including mold testing, shorter due to zinc alloy's low melting point); Mass Production: 12-25 Working Days | Urgent orders supported (8-18 working days for mass production); suitable for quick iteration of electronic and consumer products |
Common Zinc Alloy Die Casting Issues & Professional Solutions
Common Issues | Root Causes | Our Solutions |
Shrinkage Cavities & Sink Marks | Uneven wall thickness, insufficient holding pressure, improper cooling system design | Optimize part structure via mold flow simulation to ensure wall thickness variation ≤ 10%; increase holding pressure and extend holding time by 15%; design targeted cooling channels for thick-walled areas to ensure uniform cooling |
Flow Marks on Surface | Low molten zinc temperature, uneven filling speed, improper gate design | Precisely control molten zinc temperature at 430-440℃; optimize filling speed curve via mold flow simulation; adjust gate size and position to ensure smooth filling |
Internal Porosity Affecting Strength | Insufficient refining, high moisture in die lubricants, gas entrapment during filling | Implement two-stage refining process (refining agent + online degassing); use low-moisture (≤0.3%) die lubricants; optimize gate and overflow system design to improve gas discharge |
Surface Scratches & Deformation | Rough mold surface, improper demolding operation, collision during trimming | Polish mold surface to Ra ≤ 0.06μm; optimize demolding process and use soft fixtures; adopt partitioned trimming and avoid direct collision between parts |
Our Core Competitiveness
With over 10 years of industry experience, Qingdao Xinlongji has formed five core competitive advantages to serve global clients of zinc alloy die casting parts:
Professional Technical Team: 15+ professional engineers with 5-15 years of experience, including 4 senior engineers specializing in zinc alloy precision die casting; proficient in mold flow simulation (Moldflow) and complex precision mold design; familiar with ISO9001:2015 and IATF 16949 standards; provide 24-hour technical response and one-stop solutions from product structure optimization to mass production.
Strong Production Capacity: 8,000+㎡ factory area, equipped with 15+ advanced fully automatic zinc alloy die casting machines (80-800 tons) and 50+ CNC precision machining equipment; has a dedicated production line for zinc alloy precision components, with a monthly production capacity of 500,000+ pieces, supporting large-batch orders and quick iteration needs of electronic products.
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, salt spray test chambers and electrical conductivity testers; implement full-process quality control (IPQC, FQC, OQC) for zinc alloy die casting parts, ensuring 99.8% product pass rate.
Improved Supply Chain: Established long-term stable cooperation with high-quality zinc alloy raw material suppliers in the industry; relied on Qingdao's port advantage to optimize logistics links, reducing transportation costs and shortening delivery cycles.
Comprehensive Service Guarantee: Support global shipping to 60+ countries and regions (cooperating with DHL, FedEx, Maersk); professional foreign trade and customs clearance team familiar with zinc alloy parts export procedures (customs declaration, commodity inspection, certification); provide 1-year quality guarantee; one-stop service from mold design to finished product delivery, reducing clients' procurement and management costs.
Why Choose Qingdao Xinlongji?
Choosing Qingdao Xinlongji as your zinc alloy die casting parts partner means gaining professionalism, precision, and reliability that meet the rigorous standards of diverse industries. Key reasons for global client cooperation:
10+ years of focused experience in zinc alloy die casting, with in-depth understanding of the technical requirements, quality standards, and production scheduling characteristics of global automotive, electronic, medical and other industries, avoiding trial and error costs for clients' new product development.
One-stop full-chain service covering precision mold design, zinc alloy die casting, CNC machining, surface treatment, and assembly, ensuring consistent quality of zinc alloy parts and simplifying clients' procurement processes.
Quantifiable quality assurance (99.8% pass rate) and authoritative certifications (ISO9001:2015, IATF 16949), ensuring products meet the access standards of global high-end markets and brand clients.
Flexible customization capabilities: Support small-batch trial production (minimum order quantity 30 pieces) for new product development, and large-batch mass production for formal production; can customize according to clients' 3D drawings, samples and industry-specific functional requirements (electrical conductivity, corrosion resistance, wear resistance).
Advantageous geographical location: Located in Qingdao port city, convenient sea-air transportation shortens global delivery by 3-5 working days compared with inland manufacturers; professional logistics team provides door-to-door service, solving international transportation and customs clearance problems for clients.
Proven successful cases in serving well-known electronic and automotive brands in Europe and North America, with rich experience in matching new product launch schedules, ensuring quick response and on-time delivery.
Contact Us
If you have needs for custom zinc alloy die casting parts or want to learn more about our one-stop manufacturing solutions, please feel free to contact us. We will provide you with detailed product information, free quotes, and sample services within 48 hours. Looking forward to establishing a long-term and stable cooperative relationship with you to support your product development and production!
