Industrial oven is widely used in industrial production, but what are the classifications of industrial oven? Today EJER will briefly introduce you: According to the industrial oven performance, it can be divided into hot air circulation industrial oven, program-controlled oven, precision oven, clean oven, vacuum oven, explosion-proof oven, electrothermal blast oven, etc. Application: Electronic & Semiconductor, Photovoltaic, Plastic Industry, Electroplating industry, Glass, Mechanical industry. Classification 1.Appearance: Benchtop type and Floor-standing type 2.Temperature range: 1)Low temperature oven: below 100°C, generally used for electrical products aging test, slow drying of materials, food raw materials baking, plastics and other products. 2)Standard temperature oven:100-250°C, this is the common used temperature, most materials moisture baking, coating curing, heating insulation, etc. 3)High temperature oven: 260-400°C, high temperature drying special material, workpiece heating installation, material high temperature test, chemical raw material reaction treatment.,etc. 4)Ultra-high temperature oven: 410-600°C, higher working temperature, workpiece heating treatment, high temperature family special materials, material high temperature test, etc. 3.Hot Air supply: horizontal and vertical 1)Horizontal air supply: suitable for materials that need to be put on the trays. The hot air of the horizontal air supply is blown out by the two sides of the studio so that the materials can be well bathed in the tray, and the baking effect is better. On the contrary, it is not suitable to use vertical air supply, vertical air supply is blown out from top to bottom, it will block the hot air, so that the hot air is hard to reach the lower trays, the baking effect is poor. 2)Vertical air supply: industrial oven is suitable for baking on the grid trays, vertical air supply is blown from top to bottom, used for the grid trays, good circulation, hot air can be completely bathed, materials are placed on the grid trays can also be horizontal air supply, this depends on the materials characteristics. After reading our introduction, believe you have understood the classification of industrial oven.

Vacuum oven is widely used in biochemical pharmaceutical, medical and health, agricultural research, environmental protection and other research fields, for powder drying, baking and glassware disinfection and sterilization. It is suitable for rapid drying of heat sensitive, easy to decompose, easy to oxidize and complex components. EJER is a mature baking process equipment manufacturers, also it is a comprehensive enterprise that integrates design, manufacturing, sales and after-sales service capabilities, let’s briefly introduce the vacuum oven working principle and characteristics. The principle of vacuum oven: it is a kind of vacuum drying equipment to dry material under negative pressure. It is the use of vacuum pump for pumping and dehumidification, make vacuum status inside the working studio, reduce the boiling point of water, speed up drying process. Vacuum oven is designed for drying heat sensitive, easy to decompose and easy to oxidize substances, and can be filled with inert gas to the inside, especially some articles with complex composition can also be quickly dried. Features of vacuum oven: 1. the glass window is made of toughened double-layer glass, the operator does not need to open the door can also observe the materials in the studio, this improves the safety of work. 2. adopt heat-resistant silicon rubber door loop, to achieve a higher vacuum in the oven. 3. vacuum drying oven adopts high quality cold rolled A3 steel plate, surface electrostatic powder spraying, the coating is firm and has anti-rust function. 4. vacuum oven studio made of stainless steel, rounded shape, smooth, easy to clean. 5. vacuum drying oven has shorter heating time, compared with traditional oven. 6. rectangular studio, increase the effective volume, microcomputer temperature controller, can accurately control the temperature. 7. auxiliary parts are selected strictly, such as pressure sensor, vacuum vent solenoid valve, vacuum gauge, and equipped with inert gas port as an option. 8. Vacuum drying oven for medicine, metallurgy, hardware electronics, food, chemical industry, PCB baking and other industries.

Surface Mount Technology (Surface Mount Technology) is an electronic mount technology that uses professional automatic assembly equipment, such as solder paste printing machine, placement machine, reflow welding, etc. weld surface assembly elements (types include resistors, capacitors, inductors, etc.) to the surface of the circuit board. The computer, mobile phone, printer, MP4, digital image, high-tech control system with strong function are all produced by SMT equipment, which is the core technology of modern electronic manufacturing. Most electronic products require working and storage under dry conditions. According to statistics, more than 1/4 the world‘s industrial rejected products every year are related to moisture damage. For the electronic industry, the harm of humidity has become one of the main factors of product quality control. In semiconductor industry, moisture can penetrate through IC plastic package and invade IC interior from the gap such as pin, resulting in IC moisture absorption phenomenon. in SMT heating processs, the moisture entering the inside of the IC is heated and expanded to form water vapor, and the resulting pressure causes the ic resin package to crack, and the metal inside the device is oxidized, which leads to the product failure. Furthermore, when the components is in the welding process on PCB boards, it will also lead to virtual welding due to the release of water vapor pressure. according to the J-STD-033 standard, SMT components after exposure to high humidity air environment must be placed in an electronic drying cabinet below 10% RH humidity for 10 times the time of exposure to restore the “workshop life” of the components to avoid scrapping and ensure safety. Dampness caused serious problems to the quality control and reliability of products in electronic industry which must be dried according to IPC-M190 standards. The chip will be indicated its specific wet sensitive level when it leaves the factory. Another important criterion in the IPC standard is to specify the humidity required to store a chip at its corresponding level. For chip moisture-proof storage, there are two standards:10% RH below and 5% RH below dry cabinet, which is the common used series in mainstream chips. “Unsealed MSD, may recover the workshop life consumed by this MSD at a time of 5 or 10 times of the specified humidity storage (e.g .10 RH or less) when the exposure time does not exceed 72 hours .” Exposure time is the time when the MSD is placed in a high humidity environment after unsealing. Humidity has become one of the main factors of product quality control in SMT industry. SMT products storage environment humidity is below 40%, some also require lower humidity. The storage of humidity sensitive materials has been a headache for all EMS manufacturers. After absorbing moisture of electronic components and circuit boards, it is easy to produce virtual welding, which leads to the increase of rejected products. Although it can be improved after baking and dehumidification, the performance of the components is decreased after baking, which directly affects the quality of the products. EJER Dry Cabinets can settle all above humidity related problems, welcome to inquiries!

As the development of LED photoelectric industry, the requirements of the industry are becoming more and more strict. surface mount devices (SMDs) are usually moisture sensitive elements, and atmospheric moisture penetrates into the packaging material through diffusion. When the SMD element is welded to the circuit board, the process is to pass it through the reflow welding with a temperature of 150℃-260℃, and at high temperature , the rapid expansion of the moisture that seeps into it produces enough steam pressure damage or destroys the LED element, resulting in reliability failure problems such as internal rubber crack, delamination or gold wire damage. For avoiding the reliability failure caused by moisture absorption, the storage and moisture-proof measures before welding of LED products should be done well. In the past, humidity cards were usually used to test their humidity situation, not only cumbersome, but also the humidity tested is not accurate. now recommend moisture-proof box or drying box to meet the requirements of dehumidification and drying. LED silver plating bracket, driving chip, epitaxial chip and so on need to be stored in nitrogen cabinet to prevent oxidation. The moisture-proof box can store the items in the relatively closed and dry box to form a moisture-proof and anti-oxidation environment to prevent moisture absorption, moisture hydrolysis and oxidation. The moisture-proof box absorbs water molecules through a molecular sieve composed of high-efficiency hygroscopic polymer materials, and uses the “shape memory alloy” system dehumidification method to control the internal and external doors for moisture absorption and dehumidification circulation. Finally, the water molecules in the moisture-proof box will be discharged out of the cabinet. In the whole process, the water molecules will always remain gaseous and will not produce the heat absorption process.

LED photoelectric industry speed steadily rising, professionals point out that the choice of constant temperature test chamber, and other environmental test equipment have a great advantage on environmental testing of LED products. First, from the LED product quality, the LED lamps, whether indoor lamp or outdoor lamp, to a certain extent, the environmental climate, determines the quality and life of the LED lamp, the use of constant temperature and humidity chamber, thermal shock chamber and other environmental test equipment to simulate the natural environment of high temperature, low temperature, hot and humid climate, testing LED products, is undoubtedly an important means of upgrading products. Second, from the LED market competition, a constant temperature and humidity test chamber will definitely be trusted and supported by customers. Third, from the LED market development, LED lamp accept constant temperature and humidity test chamber is the key to improve the quality of products, good LED quality, will inevitably promote LED enterprises to obtain the market‘s continuous trust and choice. Fourth, from the LED market, a formal LED enterprise, will inevitably accept customers to visit the factory more or less, and perfect LED product quality inspection equipment and rules, is undoubtedly the premise and important means to obtain customer trust.

Humidity damage to solar appliances: Silicon tetrachloride in the solar industry is a kind of high corrosive toxic liquid breaks down into silicic acid and highly toxic gas hydrogen chloride when it encounters moist air. It irritates the human eye, skin and respirato ry tract. Solar PV modules must be kept their connecting plugs dry and clean to ensure they are in good working condition. Solar cells: now, the diffusion process commonly used in solar cells is phosphorus oxychloride liquid source diffusion, phosphorus oxychloride smoke in humid air, very easy to volatilize, easy to hydrolyze. And easily moldy, resulting in waste of resources. Solar cells exposed to high temperature and high humidity will result in a reduction in the output power of solar panels, to minimize the reduction in power generation, the panel must be quickly replaced. Therefore, storage is mainly to prevent moisture, avoid mildew, in order to achieve more accurate storage conditions (humidity, temperature), but also need to use special moisture cabinet. Moisture-proof cabinets play an increasingly important role in the solar photovoltaic industry. O n the one hand, the requirements for humidity are higher and higher, on the other hand, in some materials and other requirements for anti-mildew is also higher and higher.