I. Introduction:

Salt Dry Test Machine, also known as a Composite Salt Spray Corrosion Test Chamber or Salt Dry Wet Corrosion Test Chamber, simulates the natural conditions closest to gaps in accelerated corrosion tests, replicating more commonly encountered conditions in the natural environment. It subjects materials to stringent conditions several times harsher than those found in nature, including salt spray, drying, moisture, ambient temperature storage, and spray washing, among others. Tests can be performed in any sequence or individually.

II. Specifications:

Section 3: Execution Standards:

Equipment Performance and 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 piece of equipment is qualified. Common equipment standards include: 

1、GB/T 10587-2006Salt 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 test chambers. It specifies the operating conditions, technical requirements, testing methods, and inspection rules for the 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 cabinets, its confirmation methods for temperature uniformity, fluctuations, deviations, etc., are widely cited and serve as an important basis for evaluating the climatic environmental simulation capability of testing 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 under various conditions such as salt spray, dryness, humidity, and room temperature storage.

●Equipment Standard Parameters:

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

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

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

Salt fog settling rate:1.0~2.0ml/80cm²·hBetweenGBStandard).

· Corrosion Solution Concentration: Sodium chloride solution concentrationpHValue control.

Environmental Test Methods Standard

These standards specify how to conduct tests, 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 you would like translated into American English.Here are some globally recognized and widely used core testing methods standards:

1、Automotive Industry (Most Common Field)

· Volkswagen (Volkswagen) - PV 1210

· This is a classic composite salt spray test standard, typically consisting of: Salt spray → Drying → Wet-heat cycling.

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

· Ford (Ford Motor) - 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, it is an industry-standard laboratory cyclic corrosion test, referenced or adopted by many automakers.

· ISO 11997-1 & 2 Color paints and varnishes- Determination of resistance to cyclic corrosion conditions

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

2International Standard

· ASTM G85 Improved Salt雾 Test Standard Practices

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

AppendixA5Repetitive 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 spray, "dry" and "wet" conditions

· This is an international standard specifically for composite salt spray testing, providing standard cyclic conditions.

· DIN 50017 Condensate Water Climate Test

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

· JIS D 0205 Corrosion Resistance Test Methods for Automotive Parts

· Japanese Industrial Standards, including cyclic corrosion testing.

3Traditional Salt Spray Test Standard (for comparison)

The Salt Spray Test Chamber can usually perform these traditional tests as well, but they do not belong toComposite Test

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

· Including Neutral Salt Spray Test (NSF)NSSAcetate Mist TestAASSAnd Copper Accelerated Acetate Fume TestCASSThese are continuous spray systems, without including alternating stages such as drying or humidification.