LFC sand box layer requires better ventilation, better sealing outer requirements, special requirements make it very complicated structure, Changle sand box, make trouble, as long as there is a little sloppy place, the production of the flask into production, Production of castings will have a variety of problems, such as the collapse box, porosity, sand box manufacturer, shrinkage, etc., sand box supply, so the sand box also disappeared one casting equipment critical equipment. 1 apparatus. Power overload, short circuit protection 2. 3 ground protection. Overtemperature protection 4. To protect the device, all alarms are automatically cut off the power, and send voice prompts. GJB150.1-86 GB4208-93 standards GB2423.37-89 sand and dust sand and dust test methods Test methods GJB150.12 sand and dust sand and dust test GB10485 Test Method box structure: Case Case Material: high quality steel spray. Liner material: stainless steel SUS imported light board. Sight glass door for easy observation test cabinets to be tested like situation. Bottom of the chamber can be fixed with high quality PU wheels. Replace the bottom of the chamber has a dust means sand box manufacturer, Dragon Industrial (certified), Changle sand box provided by the Industrial Development Co., Ltd. Shandong dragon. Shandong dragon Development Co., Ltd. (www.julongshiye.com/) Shandong Weifang, machining leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders at the dragon with the staff warmly welcome all inquiries negotiations to create a better future dragon Industry.