本发明提供一种模拟运煤敞车车体用钢的户外腐蚀试验装置和方法，属于金属腐蚀大气模拟技术领域。该装置包括一用于数字控制模块、主试验箱、供水系统、湿度控制和反馈系统。通过数字控制模块对供水系统、湿度控制和反馈系统进行控制，对试验箱内的样品进行户外环境模拟。试验装置整体采用聚丙烯材质制造，能够满足试验装置在户外长期工作抗老化和耐腐蚀的性能要求。本发明实现了运煤敞车车体用钢在煤炭环境中的腐蚀试验，试验模拟性强，通过该发明可以提前了解运煤敞车车体用钢在役期间的腐蚀行为，为运煤敞车车体用钢寿命评估和合理选材提供重要的依据。

The invention provides an outdoor corrosion test device and method for simulating the steel used for the car body of a coal mine truck, belonging to the field of metal corrosion atmospheric simulation technology. The device includes a digital control module, main test chamber, water supply system, humidity control and feedback system. The water supply system, humidity control and feedback system are controlled by digital control module, and the outdoor environment of the samples in the test box is simulated. The test device is made of polypropylene material as a whole, which can meet the performance requirements of anti-aging and corrosion resistance of the test device for long-term outdoor work. The invention realizes the corrosion test of the steel used for the car body of the coal open wagon in the coal environment, and the test simulation is strong. Through the invention, the corrosion behavior of the steel used for the car body of the coal open wagon during service can be known in advance, which provides an important basis for the life evaluation and reasonable selection of the steel used for the car body of the coal open wagon.