什么是TOYOTA豐田試驗標準TSH1555G復雜環境下加速腐蝕試驗箱

Toyota TSH1555G復雜環境下加速腐蝕試驗標準：

Tsh1555g復合鹽霧試驗標準規定了包括車身等每個零件的加速腐蝕的再生產試驗方法，用于模擬實際車輛所產生的腐蝕。 TSH1555G標準的交變循環腐蝕測試是一個復雜的環境周期試驗，在實驗中，濕潤/干燥周期每天重復一次。對于該試驗，應使用下面介紹的的三種方法之一來進行。 

復合交變循環腐蝕試驗模式 

單周期試驗模式：

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 鹽霧噴霧（17H）→ 強制干燥（3H）→ 鹽水浸泡（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 鹽霧噴霧（1H）→潤濕（16）→強制干燥（4.5H）→鹽水浸泡（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 鹽霧噴霧（4H）→強制干燥（5H）→潤濕（12H）→強制干燥（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均可以設定循環

TSH1555G交變循環腐蝕復合鹽霧試驗機滿足如下測試條件：

1、鹽霧試驗 

鹽水噴霧應按照TSH1552G周期試驗模式中所示的條件進行。在試驗期間，鹽水預熱器，加濕器和噴霧器內的溫度應持續保持在50±1℃。 

2、鹽水浸泡 

在同樣的試驗箱內，由鹽水儲備箱將鹽水通過水泵打入試驗箱內，直到鹽水容量達到設定目標，保證樣測試產品*浸入。鹽溶液的溫度控制在50±1℃。

3、強制干燥 

在由前一個測試過程轉換到干燥階段時，電動排水閥會將試驗箱內的水全部排空，風道內有加熱器將循環風吹入到試驗箱內，溫度控制60度，濕度在30%或更低一些。 

4、自然干燥 

將試樣保留在試驗箱內進入自然干燥階段，在此試驗期間雖然沒有特殊的通風要求，建議是保持室溫在20-30℃ 。

5、潤濕試驗 

將試樣暴露在溫度50±1℃濕度85-90%條件下，加濕系統和加熱系統裝置工作保證測試進行的溫濕度要求。
 

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