Zinc alloy die-cast hardware parts

Product Overview: Zinc Alloy Die-Cast Hardware Parts

Our zinc alloy die-cast hardware 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 the hardware industry for strength, wear resistance, precision assembly and durability. Product name: Zinc alloy die-cast hardware parts (door hinges, cabinet handles, lock bodies, window regulators, hardware fasteners, industrial fittings, etc.); Core function: Provide stable structural support and load-bearing capacity, realize precise mechanical transmission and assembly matching, resist daily wear, corrosion and impact, and ensure long-term reliable operation of terminal hardware products; 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 one-step forming of complex hardware structures with high dimensional accuracy (±0.01mm) and uniform material density; the finished parts feature good mechanical properties (tensile strength ≥ 280MPa), wear resistance and easy secondary processing (drilling, tapping); Application scenario: Widely used in furniture hardware (cabinet handles, drawer slides, door hinges), construction hardware (window hardware, door locks, handrails), industrial hardware (equipment fittings, transmission components), automotive hardware (door lock components, window regulators), and daily hardware (tool accessories, household hardware fittings); Quality guarantee: All products comply with ISO9001:2015, IATF 16949 (for automotive hardware) and RoHS/REACH environmental standards; customized services are provided based on clients' 3D design drawings, sample prototypes and industry-specific requirements (load-bearing, corrosion resistance) to ensure perfect matching with terminal hardware 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-cast hardware parts, 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, surface treatment (anti-rust, wear-resistant), and assembly to meet the functional requirements of hardware. The full production process with traceability (a key credibility enhancement strategy) is visualized as follows:

• Demand Communication & Technical Evaluation: Professional engineers with hardware die casting experience communicate with clients to clarify technical requirements (dimensional tolerance, load-bearing capacity, wear resistance, corrosion resistance, assembly matching). We conduct mold flow simulation targeting the structural characteristics of hardware parts (e.g., load-bearing structures, assembly holes) to predict potential defects (porosity, shrinkage, dimensional deviation) and optimize part structures and mold gate designs.

• Precision Mold Design & Manufacturing: Customize high-precision molds for hardware parts 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) and structural stability (adapting to high-pressure die casting of hardware); conduct strict mold testing and debugging with sample prototypes to verify assembly compatibility and load-bearing performance.

• Zinc Alloy Melting & Refining: Select high-quality zinc alloy ingots (Zamak 3, Zamak 5, ZA-8) that meet hardware strength requirements and melt them in professional electric resistance furnaces (temperature controlled at 419-440℃, 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 (hydrogen content ≤ 0.12 ml/100g Zn) and avoiding internal defects that affect load-bearing capacity.

• High-Pressure Die Casting: Use hardware-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 complete filling of complex hardware structures and dense part structure.

• Demolding & Precision Trimming: Use dedicated wear-resistant soft fixtures for smooth demolding to avoid scratching the surface of hardware parts and damaging assembly structures; remove sprue, runner, and burrs through CNC precision trimming (trimming accuracy ±0.01mm) and mechanical deburring to ensure neat edges and precise assembly dimensions.

• Post-Processing & Surface Treatment: Implement hardware-specific surface treatments according to client requirements and application environments: 1) Anti-rust treatment (electroplating zinc, galvanizing): Enhance corrosion resistance, suitable for construction and outdoor hardware; 2) Wear-resistant plating (nickel plating, chrome plating): Improve surface hardness and wear resistance, suitable for moving hardware components (hinges, slides); 3) Powder coating: Provide uniform color and weather resistance, suitable for furniture hardware; 4) Passivation: Improve surface corrosion resistance for internal hardware fittings; all surface treatments comply with RoHS/REACH standards and meet hardware industry wear/corrosion resistance requirements (salt spray test ≥ 480 hours).

• Comprehensive Quality Inspection: Set up three strict inspection links (in-process, semi-finished, finished product) for hardware parts: 1) Dimensional & Assembly Inspection: Use CMM (Coordinate Measuring Machine) and 3D scanners for 100% full-size and assembly accuracy inspection; 2) Mechanical Property Inspection: Conduct load-bearing test, tensile test and wear test on sampled products to ensure strength requirements; 3) Surface & Corrosion Resistance Inspection: Use visual inspection, salt spray test chambers, and hardness testers to inspect surface quality, plating thickness and corrosion resistance; 4) Functional Test: Conduct simulated operation tests on moving hardware parts (e.g., hinge opening/closing, slide sliding) to verify smooth operation and service life.

• Packaging & Shipping: Adopt hardware-specific anti-scratch, anti-rust packaging (EPE foam inner lining, moisture-proof paper, partitioned cartons, wooden crates for large parts) to avoid surface damage and corrosion during transportation. Relying on Qingdao's port advantage, we cooperate with international logistics companies (DHL, FedEx, Maersk) to provide global door-to-door delivery services, and provide professional customs clearance documents (certificate of origin, quality inspection report) to simplify import procedures for clients.

Product Classification & Technical Parameters

3D Classification Table (Industry / Material / Part Type)

Technical Parameters Table

Common Zinc Alloy Die Casting Issues for Hardware Parts & Professional Solutions

Successful Customer Case

Client Background: A leading European furniture hardware wholesale distributor, specializing in supplying high-quality furniture hardware to large furniture brands in Europe. The client has strict requirements on the precision, wear resistance, corrosion resistance and delivery cycle of furniture hardware parts (hinges, handles), and needs to match the mass production schedule of furniture brands.

Client Demand: Custom zinc alloy (Zamak 5) die-cast cabinet hinges and drawer handles; requirements: processing precision ±0.02mm, hinge load-bearing capacity ≥ 15kg, surface treatment - chrome plating (salt spray test ≥ 480 hours), RoHS/REACH compliant, mass production order - 100,000 pieces (50,000 each type).

Our Solutions: 1. Assigned a 6-person professional engineer team (8+ years of hardware precision die casting experience) to communicate with the client; conducted 2 rounds of mold flow simulation for the hinge's rotating structure and handle's load-bearing structure, optimized the mold gate and cooling channel design to ensure structural density and dimensional accuracy; completed mold design and manufacturing in 6 working days. 2. Selected high-quality Zamak 5 zinc alloy ingots, implemented enhanced two-stage refining to ensure material purity and load-bearing capacity; pre-tested material tensile strength (≥ 290MPa) to meet the client's requirements. 3. Adopted "high-pressure zinc alloy die casting + CNC precision trimming + chrome plating" integrated process; allocated 4 dedicated 300-ton die casting machines and 2 hardware-specific plating lines for priority production, with real-time monitoring of die casting parameters and plating thickness. 4. Implemented strict quality control: used CMM and 3D scanners for 100% dimensional inspection; conducted load-bearing tests on 5% of hinges (all ≥ 16kg); completed salt spray testing for 100 samples (all passed 550 hours); conducted hinge opening/closing simulation tests (10,000 times) to verify wear resistance. 5. Utilized Qingdao Port's logistics advantage, adopted moisture-proof and anti-scratch partitioned packaging, cooperated with Maersk for sea freight, and provided complete customs clearance documents to ensure on-time delivery.

Cooperation Results: The sample was delivered 1 day ahead of schedule, and the mass production was delivered on time, with a product pass rate of 99.93%. The client's furniture brand partners confirmed that the hardware parts had excellent assembly precision and durability. We have established a long-term strategic cooperative relationship, and the client has successively entrusted us with the development and production of 5 other types of furniture hardware parts (drawer slides, furniture locks), with an annual order volume exceeding 250,000 pieces.

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-cast hardware parts:

• Professional Technical Team: 25+ professional engineers with 5-15 years of experience, including 4 senior engineers specializing in hardware precision die casting; proficient in mold flow simulation (Moldflow) and complex hardware structure design; familiar with global hardware industry standards (ISO9001, IATF 16949, RoHS); 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 hardware parts, with a monthly production capacity of 500,000+ pieces, supporting large-batch orders and emergency replenishment needs of hardware distributors and manufacturers.

• Strict Quality Management System: Certified by ISO9001:2015 and IATF 16949; set up 3 independent quality inspection workshops equipped with CMM, 3D scanners, salt spray test chambers, and load-bearing test equipment; implement full-process quality control (IPQC, FQC, OQC) and mechanical property testing, ensuring 99.8% product pass rate and compliance with global hardware quality standards.

• 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; provide one-stop procurement service to avoid intermediate links and reduce client costs.

• Comprehensive Service Guarantee: Support global shipping to 150+ countries and regions (cooperating with DHL, FedEx, Maersk); professional foreign trade and customs clearance team familiar with hardware export procedures and documents (certificate of origin, quality inspection report, RoHS test report); provide 1-year quality guarantee; support small-batch customization and fast sampling, matching hardware brands' new product development needs.

Why Choose Qingdao Xinlongji?

Choosing Qingdao Xinlongji as your zinc alloy die-cast hardware parts partner means gaining professionalism, precision, and reliability that meet the rigorous standards of the global hardware industry. Key reasons for global client cooperation:

• 10+ years of focused experience in zinc alloy die casting for hardware, with in-depth understanding of the technical requirements, quality standards, and mass production scheduling characteristics of the global hardware industry, 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 hardware parts and simplifying clients' procurement processes.

• Quantifiable quality assurance (99.8% pass rate) and authoritative certifications (ISO9001, IATF 16949, RoHS), ensuring products meet the access standards of global high-end hardware markets (EU, US, Oceania).

• Flexible customization capabilities: Support small-batch trial production (minimum order quantity 30 pieces) for new hardware styles and large-batch mass production for formal sales; can customize according to clients' 3D design drawings, samples and industry-specific requirements (load-bearing, corrosion resistance, surface texture).

• 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 and complete export documents, solving international transportation and customs clearance problems for clients.

• Proven successful cases in serving well-known hardware distributors and furniture brands in Europe and North America, with rich experience in matching mass production schedules, ensuring stable supply and on-time delivery.

Contact Us

If you have needs for custom zinc alloy die-cast hardware 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 hardware business's product development and market expansion!