First, the fans are dark in color Cause: The sweet potato was separated and precipitated by beating, and the resulting starch, usually called hair powder. Hair powder contains impurities, phenolic substances, pigments, gray, white, of which the phenolic substances are easily oxidative browning, black after making fans. Solution: Refined starch. Method is: the hair powder water 2 to 3 times, stir, add the appropriate amount of potato starch decolorizing agent, about 20 minutes, then 120 mesh nylon mesh filter. After the filtrate was precipitated for 4 to 6 hours, the supernatant water was removed and stirred with water and re-precipitated. This 3 times, you can achieve the purpose of decolorization and purification. Second, it is difficult for fans to draw more flour Cause: The surface is too thin, the cooling is too slow after the powder is drawn, and too much twisting can cause the vermicelli sticking, which leads to multiple drafts and difficult opening. Solution: When adding water at the same time, the amount of twisting should be appropriate. The total amount of water and hydrazine added per 100 kg of dry starch should not exceed 90 kg. Use an electric fan or blower to blow at the mouth of the fan and accelerate. cool down. When blending, alum and vegetable oil can be added at 0.3% to 0.4% of the dry starch weight. Such as the production of silver wire less than 1 mm in diameter, should be added in an appropriate amount of fan quality improver (opening agent). Third, the fans pot soup, broken bar (non-strength) Reasons: Usually the surface is too thin, or the temperature is too low and it is cooked thoroughly when gelatinized. However, the starch quality is too bad or the decolorization will damage the starch structure and cause the fans to lose strength. Solution: In addition to moderate dryness and wetness and increase the temperature of gelatinization, the dough can be mixed with 10% of the dry starch weight of pea starch in order to enhance muscle strength; snoring is best to use mung bean, pea starch. One of sodium alginate, agar, and konjac flour may also be added at 0.3% to 0.5% of dry starch weight. The first two should be added after cooking as wolfberry, and konjac flour can be added directly during dough mixing. Fourth, the fans surface beads, not clean Reason: When the temperature is too high during pasting, the fans are not balanced after they are cold and shrink quickly after they leave the machine, forming a large, small rosary that is not smooth. The fact that the surface is too dry and the water is too low exacerbates this phenomenon. Solution: Reduce the temperature of the water flow in the fans and reduce the temperature difference between the fans before and after they leave the machine. The total moisture content of the dough should be between 45% and 50%. Fifth, the fans are crisp and easy to break Reasons: When the powder is uncooked, the powder is not cooled on the sun, the alum is added too much, the tan is too dry and the long-term stacking is not packaged, and it will cause the fans to be crisp, resulting in losses during storage and transportation. Solution: In addition to taking measures for the cause, you can add sodium pyrophosphate 0.1% to 0.5% of salt to add natural moisture when adding 0.1% to 0.5% of dry starch. Vertical Type Dental Milling Machine Vertical Type Dental Milling Machine CAD CAM Dental Milling Machine is the champion in dental field. The dental milling provides dynamic flexibility with a built-in. This provides the user with the agility to produce a wide range of dental restoration components based on demand -- including crowns, bridges, abutments, implant-carried resorations. Plus, the Vertical Type Dental Milling Machine accommodates and supurbly machines a variety of dental materials including titanium, chrome-cobalt, zirconium and more! The Vertical Type Dental Milling Machine was developed specifically and exclusively for dental milling applications. All specifications from machine size to performance were designed for the efficient handling and milling of dental blanks (or material pucks). The blank is milled in the absolute center of the machine ensuring optimal cutting force. High performance servo and torque motors deliver superior machining dynamics and speed. the the CNC dental milling machine will can satisfy all your need. Zirconia Milling Center,Zirconia Milling Machine,Dental Milling Machine Price,Dental Cnc Milling Machine Price Shandong Carved Intelligent Technology Group Co.,Ltd , https://www.demetdent.com