English
- 中文
- English
Quality Assurance
质量保证 / Quality assurance
质量管理体系与持续保障
聚焦于保障质量体系长期稳定运行的制度、文化与承诺，作为支撑生产环节的底层保障。
质量追溯与反馈机制
建立完善的质量追溯系统，记录每批产品的生产和检测信息，及时响应质量问题。
员工质量意识培训
定期对员工进行质量意识和技能培训，强化他们在生产过程中的质量控制责任。
质量管理体系
生产流程严格遵循行业质量管理体系标准，确保生产过程的每个环节都符合国际认可的质量要求。
持续创新
作为紧固件产品和解决方案优质供应商，盈锋持续研发和创新，不以满足市场和客户的需求。
专业承诺
选择盈锋紧固件，您将享受到我们对品质的不懈追求和对服务的专业承诺。
Environmental Simulation Testing
品质保证
我们秉承着生产高质量、高品质产品的态度去完成每一个订单
Infasron’s real-world testing is a comprehensive, multi-dimensional verification system that serves as the cornerstone of industrial safety. Beyond mere static strength, our fasteners are engineered to endure extreme conditions—including dynamic loading, fire, and severe corrosion. By bridging the gap between lab results and real-world performance, we ensure the structural resilience of skyscrapers and sea-crossing bridges, providing an indispensable guarantee for modern steel engineering.
Long-term
Reliability
Test
Environmental Durability (Weathering) Testing
Evaluates the aging of screw coatings and base materials under prolonged outdoor exposure.
UV Aging Test: Simulates UV radiation to test coating resistance (e.g., color zinc, powder coating) against chalking, discoloration, and peeling.
Damp Heat Test: Simulates high temperature and humidity to check for corrosion, coating blistering, and loss of adhesion.
High/Low Temperature Thermal Cycling Test: Cycles screws between extreme temperatures to assess if thermal expansion and contraction cause coating cracks, thread damage, or performance degradation.
Environmental Corrosion Testing
Simulates various natural environments or specific working media to verify corrosion resistance.
Neutral Salt Spray (NSS) Test: The most common accelerated corrosion test; simulates marine or salt-laden atmospheres to evaluate plating and material resistance.
CASS Test: A more severe test than NSS, primarily used for rapid evaluation of decorative plating performance.
Cyclic Corrosion Testing (CCT): Simulates real-world wet/dry cycles, providing a more accurate reflection of actual corrosion than continuous salt spray.
Acid Rain / $SO_2$ Corrosion Test: Simulates corrosive environments such as industrial acid rain or atmospheric pollution.
Stress Corrosion Cracking (SCC) Test: Evaluates the susceptibility of high-strength steel screws to brittle fracture under combined tensile stress and corrosive media.
Basic
Performance and
Accuracy Test
Mechanical Performance Testing
This is the most fundamental and critical set of tests used to verify the strength, toughness, and reliability of the screws.
Tensile (Strength) Test: Measures the maximum load a screw can withstand under axial tension before breaking. This is the core indicator of its holding power.
Hardness Test: Uses methods such as Rockwell (HRC) and Vickers (HV) to measure surface and core hardness, ensuring sufficient strength to resist deformation and wear.
Torque-Tension Test: Measures the clamping force generated by a specific torque and the torque required to reach a target clamping force. This is vital for assembly quality control and preventing loosening.
Head Soundness Test: Applies a heavy load to the screw head to verify its load-bearing capacity and resistance to detachment.
Fatigue Test: Applies cyclic loads to the screw to simulate long-term performance under vibration, determining the fatigue limit and predicting service life.
Dimensional and Geometric Accuracy Measurement
Ensures that screws can be smoothly and correctly assembled.
Major Dimensions: Measurement of major diameter, thread pitch, length, head dimensions, and width across flats.
Geometric Tolerances: Thread Go/No-Go gauge testing, concentricity of head to shank, thread flank angle, etc.
Surface Defects: Inspection for cracks, burrs, laps, and dents. Magnetic particle or eddy current testing is often used to detect microscopic surface and near-surface cracks.
Material Composition,
Properties and Special
Environment Testing
Chemical Composition and Metallographic Analysis
This stage ensures quality control at the essential material level.
Chemical Composition Analysis: Uses spectrometers and other equipment to detect the elemental makeup of the screw material, ensuring compliance with standards (e.g., content of Carbon, Chromium, Nickel, Molybdenum, etc.).
Metallographic Analysis: Screws are sectioned and observed under a microscope to examine their microstructure (such as grain size, inclusions, carburized layer depth, and decarburization depth) to evaluate the heat treatment process. Excessive decarburization depth can severely weaken the surface strength and fatigue life of the screw.
Special Application Scenario Testing
Targeted testing is conducted based on the specific end-use environment of the screws.
Seismic Resistance Test: Used for safety-critical areas such as buildings, bridges, and nuclear power plants to simulate performance under extreme earthquake loads. Steel structures in high-seismic zones must verify the ductility and energy dissipation capacity of their joints under repeated seismic waves.
Fire Resistance Test: Measures the duration a screw can maintain strength and connectivity in high-temperature fire environments. Fire is a major threat to steel structures; as steel strength drops sharply at high temperatures, fasteners must maintain their function for a specific time to allow for evacuation and rescue.
Stress Corrosion Cracking (SCC) Sensitivity Test: Specifically for steel structures near bridges, coastal areas, or chemical plants. Fasteners in these environments endure the combined effects of high tensile stress and corrosive media, making them highly susceptible to brittle fracture.
Fatigue Performance Testing: Applied to steel structures bearing dynamic loads, such as bridges, crane beams, and wind turbine towers. Fasteners in these structures must withstand millions or even billions of alternating stress cycles.
Add: Building 10-A, Plot No. 11, Zhongnan High-tech Industrial Park, Jianghai Linkage Development Demonstration Zone, Tongzhou Bay, Jiangsu, P.R. China
Email: IFS@infasron.cn | Fax: +86-0513-82566650
Copyright © Infasron Fastening Systems (Nantong) Co., Ltd. All rights reserved. 苏ICP备2022044235号-1
Inquiry Hotline
点击右上角
分享给朋友吧
