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Product Testing and Characteristics of Lijia Negative Temperature Control Humidity Test Chamber

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Release date: 2021-07-09

With the birth of new equipment and new technology, the consumption of welding materials in my country has been declining year by year. The proportion of welding rods in the total output has dropped from 52.74 in 2009 to 37.59 in 2018. The main reason is "low cost and low quality". There is a product structure problem of overproduction of low-end products and insufficient high-end products, which can only be used in secondary projects. From the perspective of the development trend of welding technology, good welding quality, low cost, high production efficiency is a measure of the welding industry. For this reason, Lijia negative temperature-controlled humidity test chamber can provide safety solutions for welding technology for manufacturing and major projects.

What is a negative temperature control wet test chamber?

The negative temperature-controlled humidity environment test chamber is a special constant temperature and humidity test equipment, which is mainly used to test the performance of materials in various environments and to test the heat resistance, cold resistance, dry resistance and humidity resistance of various materials, and the required constant temperature and humidity environment.

Common temperature cycle charts

Graph Analysis:

It can be seen that the first coordinate chart shows the humidity change curve. At the beginning of the test, the relative humidity is 70%, and then rises to 95%. At this time, the humidity increase time is not required. After 95%, it lasts from the beginning to 57~60 minutes, and the temperature is kept at 40°C.

The second graph shows the temperature profile. After the humidity was increased to 95% and held for 57 to 60 minutes of the test time, it was immediately reduced to 25% for 60 minutes, at which time the temperature was still maintained at 40°C.

After this 60-minute decrease in humidity, the humidity began to increase again to 70%, at which time the temperature was then decreased to 20 ° C. for 60 minutes.

Thereafter, 70% humidity was maintained at 20°C for 60 minutes.

Standard Equipment Performance Characteristics

01 Precisely controlled refrigeration system, with -250 ℃ design and manufacturing capacity.

The central controller controls the size of the cooling capacity by adjusting the refrigerant flow rate according to different temperature points (that is, the "static balance" technology of cooling without heating and heating without cooling), so that the equipment operation is always in a relatively low power consumption state.

02 Advanced Air Duct Design

Ensure the temperature uniformity of the environmental test chamber is ± 2, ± 1, ± 0.5, ± 0.3, ± 0.2, and effectively control the frost phenomenon of the evaporator.

03 Multi-function environment experiment control advantage

Through the internet network, you can view and operate the controller synchronously through the iPad and mobile phone in any place where there is a network. It is independently developed and can expand the compressor: current, pressure and flow. Box multi-channel temperature and humidity acquisition.

The technologies involved in Lijia negative temperature-controlled humidity test chamber all meet the requirements of national standards for GB2423.1-2008, GB2423.2-2008, GB2423.3-2006, GJB150.3-2009, GJB150.4-2009 and GJB150.9-2009. For this reason, the negative temperature-controlled humidity test chamber can provide a safety solution for welding technology for manufacturing and major projects.

Obviously, the welding industry is showing a subdivided competitive advantage. Guangdong Lijia is an essential welding material market with full strength and personality characteristics of the backbone. Although Guangdong Lijia has only been established for more than 10 years, the services provided again and again in domestic universities and research institutions, power battery industry and military industry show that Guangdong Lijia is accompanying the development of various industries and laying a solid foundation for the rapid development of Chinese technology.

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