With the improvement of global environmental protection, low carbon, green and other standards, the sand and dust test chamber industry will inevitably show a rapid prospect. Sand and dust test chambers are of extraordinary significance and incomparable position for the low-carbon modern economy. Although the progress of the times has made users’ requirements for test chambers continue to increase, at the same time, it can be seen that the design of sand and dust test chambers by enterprises is more and more reasonable and more in line with the needs of users. progress. In line with this development trend, the sand and dust test chamber will usher in a new development situation.
Although China’s sand and dust test chamber industry has a long gap with foreign countries for a long time, it has never stopped the pace of prospects. Especially in recent years, various emerging industries in China have continued to sprout prospects. These emerging industries, such as environmental protection industry, new energy industry, microbiology industry, chemical and chemical industry, etc., have a great impact on the prospects of sand and dust test chambers. great influence and great impetus.
Many intelligent technologies in China are constantly in the foreground, and these technologies continue to assist the sand and dust test chamber industry to transform into an excellent manufacturing industry. The prospect of emerging industries has driven the prospects of the sand and dust test chamber industry, and the prospect of the sand and dust test chamber industry has in turn stimulated the innovation of emerging industries. It is believed that such a virtuous cycle will continue. Only the container industry can gradually move towards the world level.
| DIN EN 60529｜VDE 0470-1 | Degrees of Protection Provided by Enclosures (IP Code) (IEC 60529:1989 + A1:1999 + A2:2013); German Version EN 60529:1991 + A1:2000 + A2:2013 |
| DIN SPEC 79009 | EPAC-Cycles – Enviornmental Assessment – Safety Related Aspects E DIN SPEC 79009:2018-03 |
| DIN 40 050 Teil 9 | Road Vehicles, Degrees of Protection (IP-Code), Protection Against Foreign Objects; Water and Contact; Electrical Equipment |
| SAE J575 | Test Methods and Equipment for Lighting Devices for Use on Vehicles Less than 2032 mm in Overall Width |
| IEC 60529 | Degrees of Protection Provided by Enclosures (IP Code) → Test Standards for Sand Dust Test Chamber |
| CEI IEC 68-2-68 | International Standard Environmental Testing – Part 2: Tests – Test L: Dust and Sand |
The sand and dust test chamber is suitable for the test of electrical and electrical products, automobile and motorcycle parts, and seals. performance in use, storage, and transportation in dusty environments. Dust refers to solid particles suspended in the air. It is customary to have many names for dust, such as dust, dust, smoke, mineral dust, sand dust, powder, etc. These terms have no clear boundaries. The Organization for Standardization stipulates that suspended solids with a particle size of less than 75 μm are defined as dust. The types of dust can be divided into: flying dust, falling dust, total suspended particles, powder particles, dust, smoke, smoke and powder according to the size of dust particles in the atmosphere. The dust formed in the production is divided into:
| Mineral dust, such as quartz, asbestos, talc, coal, etc.; metallic dust, such as iron, tin, aluminum, manganese, lead, zinc, etc.; artificial inorganic dust, such as emery, cement, glass fiber, etc. | Inorganic Dust |
| Animal dust, such as wool, silk, bone, etc.; plant dust, such as cotton, hemp, grass, sugarcane, grain, wood, tea, etc.; artificial organic dust, such as organic pesticides, organic dyes, synthetic Resin, synthetic rubber, synthetic fiber, etc. | Organic Dust |
| Mixed dust refers to the above-mentioned types of dust, which are formed by mixing two or more substances. This type of dust is common in production. | Mixed Dust |
At present, the utilization rate of sand and dust of the common sand and dust test chambers on the market is very low, generally only 50% of the circulating sand and dust is less than, which is unscientific for the accuracy of the test. So, what technical means or test methods can be adopted to effectively improve the sand and dust utilization rate of the sand and dust test chamber?
First of all, we need to understand the reasons for the small amount of circulating sand and dust. Only by finding the cause of the local accumulation of sand and dust can we prescribe the right medicine and improve the accuracy of the equipment test. The level of dust utilization is mainly reflected in the following three aspects:
1. Whether the circulating air humidity value in the dust box is reasonable. Generally speaking, the drier the weather, the more the dust will be scattered. This is the same as the environment we live in. Therefore, reducing the humidity in the test room is a basic requirement.
2. Whether there is anti-static treatment. If the sand and dust test box is not anti-static, it will cause a large amount of sand and dust to be adsorbed on the inner wall of the box, resulting in a significant reduction in the utilization rate of sand and dust.
3. Whether the sand and dust circulation system is reasonable. The sand and dust circulation system is mainly composed of a motor and an air duct. The power of the motor directly affects the size of the wind, and the rationality of the air duct directly affects the recycling rate of the sand and dust. Therefore, when selecting the configuration, it is necessary to select the motor and install the air duct reasonably according to the size of the actual box.
| ISO 20653 | Road vehicles – Degrees of Protection (IP-Code) → Protection of Electrical Equipment Against Foreign Objects, Water And Access |
| DIN EN 60068-2-68 | Environmental Testing—Part 2: Tests Test L: Dust and Sand (IEC 68-2-68 : 1994) EN 60068-2-68 |
| DIN 40046 | DIN 40046-721-3 Guidance for the Correlation and Transformation of Environmental Condition Classes Of IEC 60721-3 To The Environmental Tests of IEC 60068 Stationary Use at Weatherprotected Locations (IEC/TR 60721-4-3:2001 + A1:2003) |
| MIL-STD-331C | Test Method Stan Dard Fuze and Fuze Components, Environmental and Performance Tests For |
| DEF STAN O0-35 Part 3 Issue 4 | Environmental Handbook for Defence Materiel Part 3 Environmental Test Methods |
The development of sand and dust testing machine is not only inseparable from high technology, high performance, high quality and good service, but its sensing technology is also very important. Sensing technology is not only the basis for the detection of the device, it is also the basis for the control of the device. There is also intelligent control technology. Intelligent control technology is a technology that human beings can monitor and control intelligent tools, equipment, and systems in a near-optimal way to achieve a predetermined goal through a measurement and control system. It is directly related to the measurement and control system. It is the key to the development from information technology to knowledge economy technology. Intelligent control technology is the most important and critical software resource in the measurement and control system.
The development of sand and dust testing machines in China is relatively stable, but there is still a big gap compared with foreign equipment. The key to the development of this equipment is a crucial technology, that is, human-machine interface technology. Human-machine interface technology is mainly to facilitate instrumentation operators or operators of main equipment and main systems equipped with instruments to operate instruments or main equipment and main system services. Reliability technology, with the increasing application of sand and dust test chambers and measurement and control systems, reliability technology, especially in some military, aerospace, electric power, nuclear industry facilities, large-scale projects and industrial production. Improve combat effectiveness and maintain normal important role of work.