Which analysis instruments are needed in the foundry's casting process
What analytical instruments foundry business casting process requires? Foundry casting is a process in which a metal is smelted into a liquid that meets certain requirements and poured into a mold, which is cooled, solidified, and cleaned to obtain a casting of a predetermined shape, size, and properties. Casting blanks have been reduced in cost due to near-shaping and have been free of machining or small amounts of processing, and have reduced production time to a certain extent. Casting is one of the basic processes of the modern device manufacturing industry. China's casting production accounts for more than 1/3 of the world's total output, and it is a veritable casting production country. At present, the mainstream process is sand casting, namely smelting - modeling - core - sand processing - cleaning process. In order to produce high-quality castings, during the smelting process, the chemical composition in the furnace needs to be adjusted. At this time, an electro-optical direct reading spectrometer ( QL-5800 ) is required to perform elemental furnace analysis. In incoming inspection and finished product quality management, direct reading spectrometers can be used for quality control. The use of these analytical instruments in the casting process not only enables quality control to ensure product quality, but more importantly, accurate and rapid analysis results can reduce the energy consumption per unit finished product and improve the efficiency of production companies. Unicorn QL-5800 series products, namely unicorn photoelectric emission spectrometer (industry direct reading spectrometer ), including Kirin QL-5800, can quickly determine the elemental composition of solid metal samples, widely used in steel, casting, colored, automotive, machining And many other industries, to improve the smelting industry and mechanical processing industry project management analysis, raw material acceptance and product identification and analysis capabilities. Nanjing Kirin Scientific Instrument Group Co., Ltd. Testing Center Good quality of sealing hot melt adhesive packaging
If hot melt adhesive is used, adding glue during processing will not cause downtime; while replacing the tape requires downtime. In addition, the clapboard may not be installed in the box, and the sealing strength of the box is greater than that of the clapboard when the box is sealed with tape, which can reduce the cost of the clapboard.
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Shipping cartons must be able to withstand temperature, humidity changes, and rough handling, which is more difficult to meet with tape because of its poor bond strength, low tensile strength, and poor adhesion to coated or oil-based cardboard.
The hot melt adhesive has a good bonding force with wet materials, and has a strong penetration force. It plays a physical and chemical bonding effect between the corrugated paper and the lining board at the same time. The overall strength of the bonded carton is enhanced, and the carton is not easy to deform and crack. In addition, the hot melt adhesive application system can apply glue to key parts of various shapes, such as: carton inner flaps.
High temperature resistance
Secondly, the self-adhesive tape has poor low temperature resistance. In the cold climate of the north, it is easy to open the glue; the hot melt adhesive has good low temperature resistance and can withstand low temperature of -40 °C. In addition, the storage period of hot melt adhesive is as long as 2 years, the storage area is small, and there are no special storage requirements; while the storage period of the tape is only half a year, and certain storage conditions are also required, otherwise it is easy to deteriorate.
Strong anti-theft performance
Hot melt adhesive also provides a great anti-theft feature, as the adhesive penetrates into the corrugation any attempt to open the carton will tear the fibers. The tape can be cut with a knife, unknowingly taking the contents and resealing it again.
beautiful appearance
Today, merchants require packaging to convey product and company image through packaging pattern design while delivering goods. Therefore, the fewer factors that hinder the appearance, the better. Tape often obstructs the image and interferes with the transmission of packaging information; while hot-melt glue is used to bond between the flaps, which can provide a larger display space.
low cost
The sealing speed of hot melt adhesive is fast, and the whole bonding process can be completed in only 1 to 3 seconds. It is suitable for mass production, with low energy consumption and low cost. The sealing cost of standard corrugated box hot melt adhesive is about 32 yuan/1000 boxes, which is the middle price of hot melt adhesive, and the middle price of tape sealing is about 120 yuan/1000 boxes.
