Composite Salt Spray Test Chamber

• Operation of Composite Salt Spray Test Chamber: Pitfall Avoidance Guide and Core Precautions

  Dec 13, 2025

      The composite salt spray test chamber is core equipment for corrosion reliability testing of products such as metals and coatings, and its test data directly affects quality evaluation. However, negligence of details during actual operation often leads to distorted results. This article sorts out common mistakes and precautions to improve the standardization of tests. I. Common Mistakes During Operation (1) Pre-test Preparation: Basic Omissions Lay Hidden Risks 1. Non-standard salt solution preparation: Estimating salt dosage by experience or failing to use a balance with an accuracy of ≥0.1g easily causes concentration deviation from standards (e.g., 5% sodium chloride solution); using tap water instead of deionized water introduces interfering ions; injecting insufficiently mixed solution tends to clog nozzles and result in uneven salt spray distribution. 2. Improper sample treatment and placement: Unremoved oil and rust on the sample surface prevent salt spray from contacting the substrate; overlapping samples, insufficient spacing, or failure to align with the spray direction at an angle of 15°–30° all lead to data deviation. 3. Perfunctory equipment inspection: Insufficient water in the liquid storage tank may interrupt the test; salt deposits blocking nozzles and air pipes cause inadequate salt spray; uncalibrated temperature and humidity sensors result in loss of control over test conditions. (2) During the Test: Improper Operation Causes Data Invalidity 1. Arbitrary adjustment of test parameters: Unauthorized modification of parameters such as temperature and salt spray volume leads to inaccurate data; frequent door opening midway disrupts the stable temperature and humidity environment inside the chamber. 2. Neglect of abnormal condition handling: Failure to shut down and troubleshoot anomalies (e.g., uneven salt spray, temperature/humidity fluctuations) results in distorted data. For instance, unaddressed abnormal salt spray deposition (1–2mL/(80cm²·h)) will make corrosion evaluation deviate from actual conditions. 3. Incomplete data recording: Only recording the start and end time without real-time logging of parameters (e.g., temperature and humidity); failing to timely document sample corrosion phenomena impairs subsequent analysis.  (3) Post-test: Improper Follow-up Affects Equipment Service Life and Data Analysis 1. Inadequate equipment cleaning: Residual salt solution corrodes the chamber and pipelines; salt deposits block nozzles and atomizers; corrosion products on the chamber wall contaminate subsequent samples. 2. Rash sample treatment and analysis: Failure to rinse and dry samples in accordance with standards allows residual salt to continue corroding the samples; relying solely on visual observation without instrumental quantitative data leads to unscientific conclusions. 3. Lack of equipment maintenance: Not inspecting sealing rings, lubricating components, or cleaning filters results in frequent equipment failures and shortened service life. II. Core Precautions: Ensure Test Accuracy and Equipment Stability 1. Standardize solution preparation: Prepare solutions in accordance with standards such as GB/T 10125, weigh salt with a precision balance and use deionized water, verify concentration with a densitometer, and inject the solution after thorough mixing and standing. 2. Standardize sample operation: Degrease, derust, and dry samples; ensure sample spacing ≥20mm, distance from chamber wall ≥50mm, and place samples at 15°–30° to prevent shielding. 3. Comprehensively inspect equipment before testing: Check water level, remove salt deposits, calibrate sensors, and verify airtightness to ensure test conditions meet requirements. 4. Stabilize and control test parameters: Prohibit modification of core parameters; limit door opening time to ≤1 minute; record data hourly; shut down and troubleshoot anomalies before retesting. 5. Maintain and clean equipment post-test: Drain and rinse the equipment thoroughly; process samples in a standardized manner and conduct instrumental analysis; regularly replace filters, inspect sealing rings, and keep detailed maintenance records. III. Conclusion     The quality of composite salt spray test chamber operation hinges on standardized procedures. Avoiding common mistakes and strictly following precautions ensures data accuracy to support product quality control, while extending equipment service life and reducing costs. Standardization is the core of accurate testing.

  ホットタグ : Composite Salt Spray Test Chamber 温度環境試験室 環境試験室メーカー 環境シミュレーション室 Environmental Chamber Testing Equipment

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• Composite Salt Spray Test Chamber: Core Performance Analysis

  Dec 12, 2025

      In the corrosion resistance testing of metal materials, coatings and components, the composite salt spray test chamber is an indispensable core equipment. It breaks through the limitations of traditional single salt spray tests, can simulate complex natural environments, and provides accurate data for product reliability evaluation. The following analyzes its key performance from four core dimensions. I. Accurate Environmental Parameter Control Capability Composite salt spray tests have extremely high precision requirements for parameters such as temperature, humidity and salt spray concentration, and the control performance of the equipment directly determines the validity of test data. Temperature and Humidity Control: Supports wide-range adjustment of temperature (5℃-50℃) and humidity (45%-98%RH) in the salt spray chamber. The temperature fluctuation is ≤±0.5℃ and the humidity deviation is ≤±3%RH, which can stably simulate typical corrosive environments such as high humidity in coastal areas and high temperature with high salt. Salt Spray Concentration Regulation: The salt water injection volume is controlled by a high-precision metering pump, and the salt spray sedimentation volume is stably maintained at 1-2ml/(80cm²·h). It supports the preparation of sodium chloride solution with a concentration of 5%-20%, and is also compatible with special test requirements such as acetic acid and copper-accelerated acetic acid salt spray (CASS). II. Multi-dimensional Environmental Simulation Capability Different from traditional salt spray machines, the core advantage of composite models lies in the simulation of "composite" scenarios, which can reproduce the synergistic corrosion effect of "salt spray + humidity + temperature cycle" in natural environments. Multi-mode Switching: Supports seamless switching between three modes: continuous salt spray, intermittent salt spray and damp-heat cycle. For example, it simulates the alternating environment of high-temperature salt spray during the day and low-temperature high-humidity at night, which is closer to the actual service scenario of products. Full-range Corrosion Coverage: The diameter of salt spray particles is controlled at 1-5μm. Through the annular layout of multiple nozzles, the uniform distribution of salt spray in the chamber is realized, covering the test samples without dead ends, ensuring the comparability of corrosion degrees of samples at different positions. III. Stable and Reliable Operation Performance Corrosion resistance tests often last for several days to months, and the long-term operation stability of the equipment is the key to ensuring the smooth completion of the test. Anti-corrosion Structure Design: The inner tank of the test chamber is made of 316L stainless steel, and the nozzles are made of salt-corrosion-resistant ceramic materials, which can effectively resist the corrosion of the equipment itself by salt spray and extend its service life. Intelligent Protection Mechanism: Equipped with functions such as low salt water level alarm, over-temperature protection and compressor overload protection. It will automatically shut down and give a prompt when parameters are abnormal, avoiding test interruption or sample damage. IV. Convenient Operation and Data Management Humanized operation design and complete data recording functions improve test efficiency and ensure data traceability. Intelligent Control: Adopts a 7-inch touch screen, supports test parameter presets and automatic process operation, and can store more than 100 sets of test schemes, facilitating the call of repeated tests for similar products. Data Visualization: Displays real-time data such as temperature, humidity and salt spray sedimentation in the chamber, supports regular data printing and USB export, and meets the standardization requirements of test reports. Conclusion     The composite salt spray test chamber’s core performance lies in the integration of "precision control, multi-dimensional simulation and stable operation". For corrosion resistance testing of auto parts, marine engineering equipment or electronic components, a reliable chamber provides strong data support for product quality enhancement.

  ホットタグ : Composite Salt Spray Test Chamber Testing Equipment 温度環境試験室 環境試験室メーカー 環境シミュレーション室 Environmental Chamber

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