什么是TOYOTA丰田试验标准TSH1555G复杂环境下加速腐蚀试验箱

Toyota TSH1555G复杂环境下加速腐蚀试验标准：

Tsh1555g复合盐雾试验标准规定了包括车身等每个零件的加速腐蚀的再生产试验方法，用于模拟实际车辆所产生的腐蚀。 TSH1555G标准的交变循环腐蚀测试是一个复杂的环境周期试验，在实验中，湿润/干燥周期每天重复一次。对于该试验，应使用下面介绍的的三种方法之一来进行。 

复合交变循环腐蚀试验模式 

单周期试验模式：

Toyota Laboratory Accelerated Cyclic Corrosion Test

This test procedure serves as a general purpose atmospheric corrosion test and can be applied to a wide variety of materials, coatings and interactions of materials.

It has been developed to allow the evaluation of the corrosion resistance of metals used in vehicle bodies where there is a significant influence of chloride ions, mainly as sodium chloride from winter road de-icing salt. This test is cyclic in nature, i.e.; test specimens are exposed to changing climates over time.

Test specimens are placed in an enclosed chamber and exposed to a changing climate.
 

The test comprises 3 alternative 24 hour single cycles, methods A, B and C.

Method A comprises 17 hours saltwater spraying, 3 hours forced drying, 2 hours saltwater dipping and finally 2 hours natural drying.

方法A 盐雾喷雾（17H）→ 强制干燥（3H）→ 盐水浸泡（2H）→ 自然干燥（2H）  

Method B comprises 1 hour saltwater spraying, 16 hours wetting, 4.5 hours forced drying, 1 hour saltwater dipping and finally 1,5 hours natural drying.

方法B 盐雾喷雾（1H）→润湿（16）→强制干燥（4.5H）→盐水浸泡（1H）→自然干燥（1.5H） 

Method C comprises 4 hours saltwater spraying, 5 hours forced drying, 12 hours wetting, 2 hours forced drying and finally 1 hour natural drying.

方法C 盐雾喷雾（4H）→强制干燥（5H）→润湿（12H）→强制干燥（2H）→自然干燥（1H） 

The number of cycle repeats and therefore the test duration is variable.

This test is also referred to as a Cyclic Corrosion Test, often abbreviated to CCT.
方法A、B、C均可以设定循环

TSH1555G交变循环腐蚀复合盐雾试验机满足如下测试条件：

1、盐雾试验 

盐水喷雾应按照TSH1552G周期试验模式中所示的条件进行。在试验期间，盐水预热器，加湿器和喷雾器内的温度应持续保持在50±1℃。 

2、盐水浸泡 

在同样的试验箱内，由盐水储备箱将盐水通过水泵打入试验箱内，直到盐水容量达到设定目标，保证样测试产品*浸入。盐溶液的温度控制在50±1℃。

3、强制干燥 

在由前一个测试过程转换到干燥阶段时，电动排水阀会将试验箱内的水全部排空，风道内有加热器将循环风吹入到试验箱内，温度控制60度，湿度在30%或更低一些。 

4、自然干燥 

将试样保留在试验箱内进入自然干燥阶段，在此试验期间虽然没有特殊的通风要求，建议是保持室温在20-30℃ 。

5、润湿试验 

将试样暴露在温度50±1℃湿度85-90%条件下，加湿系统和加热系统装置工作保证测试进行的温湿度要求。
 

KD-TSH1555G复合盐雾试验机技术规范：