I. Introduction:

Salt Dry Test Chamber, also known as Composite Salt Spray Test Chamber and Salt Dry Wet Corrosion Test Chamber, is designed to simulate the natural conditions of*the proximity of gaps in accelerated corrosion tests, replicating the more commonly encountered conditions in the natural environment. It subjects materials to testing under conditions several times harsher than those found in nature, including salt spray, drying, humidity, ambient static storage, and spraying, among others. Tests can be conducted in any sequence or individually.

II. Specifications:

Equipment Performance & Technical Standards 

These standards specify the requirements that a composite salt spray test chamber must meet in terms of manufacturing, performance, and safety, serving as the foundation for evaluating whether a device is qualified. Common equipment standards include: 

1、GB/T 10587-2006"Salt Spray Test Chamber Technical Conditions"

·China's national standard is the most fundamental and general technical standard for the domestic production and use of salt spray boxes. It stipulates the usage conditions, technical requirements, testing methods, and inspection rules for salt spray test chambers.

2. IEC 60068-3-5 Environmental Testing- Chapter3-5Partial: Supporting Documents and Guidelines- Performance Confirmation of Temperature Test Chamber

·IEC standards, although not specifically written for salt spray chambers, are widely referenced for their confirmation methods regarding temperature uniformity, fluctuation, deviation, etc., which are crucial for evaluating the climate environment simulation capability of test chambers.

3、JB/T 13209-2017 Composite Salt Spray Test Chamber

· China's machinery industry standards, specifically formulated for composite salt spray test chambers, are more stringent.GB/T 10587More specifically, it clearly specifies the technical parameters of the test chamber capable of alternating cycles of salt spray, drying, humid heat, and ambient storage conditions.

●Key Equipment Specifications:

· Temperature Range: Room Temperature~+70℃ or wider.

Uniformity of temperature: The difference in temperature among various points inside the box, usually required to be ≤2℃。

Temperature Fluctuation: The up and down change of temperature at a specific point, usually required to be ≤ ±0.5℃。

Salt雾沉降率：At1.0~2.0ml/80cm²·hBetweenGBStandard).

· Corrosion Solution Concentration: Sodium chloride solution concentrationpHValue control.

Environmental Test Methods Standard

These standards outline the procedures for testing, including test conditions, cycles, sample preparation, and result evaluation. The core value of the composite salt spray test chamber lies in its ability to perform these complex cyclic corrosion testing methods.

●Please provide the Chinese content that you would like to have translated into American English.Here are some globally recognized and widely used core testing method standards:

1、Automotive Industry (Most Common Field)

· Volkswagen (Volkswagen) - PV 1210

· This is a classic salt spray test standard, typically with a cycle of: Salt Spray → Dry → Wet Heat Cycles.

· Total testing time can reach dozens to hundreds of cycles (such as)40Week/1000Simulating the corrosion conditions of automotive parts under harsh environments (hours).

· Ford (Ford Motor Company) - CETP 00.00-L-467

The corrosion test standards in Ford's laboratory also employ a multi-environmental alternating cycle test, including salt spray, drying, and static conditions.

· General Motors (General Motors) - GMW 14872

· GM's cyclic corrosion laboratory test standards, methods similar.

· SAE J2334

· Developed by the Society of Automotive Engineers of the U.S.A., it is an industry-standard laboratory cyclic corrosion test, referred to or adopted by many automakers.

· ISO 11997-1 & 2 Enamel and varnish- Determination of Resistance to Cyclic Corrosion Conditions

· International standards, widely used for corrosion resistance evaluation in the paint industry.

2International Standard

· ASTM G85 Improved Salt Spray Test Standard Practices

· This is one of the most critical composite salt spray test methods standards. It is based on traditional neutral salt spray (ASTM B117On the basis of ), multiple appendices have been added, each representing an improved, more rigorous cyclic test.

· AppendixA5Cyclic acidic salt spray test, commonly used in the automotive industry, simulating environments such as deicing salt.

· Additional appendices are tailored for various application scenarios.

· ISO 14993 Corrosion Test- Test under cyclic exposure to salt fog, "dry" and "wet" conditions

This is an international standard specifically for composite salt spray testing, which provides standardized cyclic conditions.

· DIN 50017 Condensation Water Climate Test

Although primarily a湿热 test, its test conditions (condensation under saturated humidity) are an important reference for the "湿热" stage in the salt spray cycle.

· JIS D 0205 Test Method for Corrosion Resistance of Automotive Parts

· Japanese Industrial Standards, including cyclic corrosion testing.

3Traditional Salt Spray Test Standards (for comparison)

The salt spray test chamber, typically, can also perform these traditional tests, but they are not considered to be part of"Composite" test.

· GB/T 10125-2021 / ISO 9227:2017 Artificial Atmosphere Corrosion Test - Salt Spray Test

· Including neutral salt spray testNSSAcetate Mist TestAASSAnd Copper Accelerated Acetate Fume TestCASSThese are continuous atomizers, which do not include alternating stages such as drying, humid, etc.