Refining agent method<\/strong><\/p>\nAdd an appropriate amount of refining agent to the metal liquid. It chemically reacts with impurities to generate slag or gas that floats to the surface for removal. Commonly used borax, sodium carbonate, etc., different metals need to choose the appropriate refining agent.<\/p>\n
Filtration method<\/strong><\/p>\nCeramic filter is set in the pouring system. As the liquid metal flows through, impurities are filtered to improve the purity of the liquid metal entering the cavity. Select filter reasonably according to liquid metal flow and impurity size.<\/p>\n
<\/span>Demolding parts<\/span><\/h3>\nEjector time<\/strong><\/p>\nEjecting time is very critical, too early casting is not solidified easy to deformation and damage. Too late due to the increase of friction, increase the difficulty of stripping and even damage the mold. According to the casting material, thickness, mold structure, etc., determined by experience or simulation analysis.<\/p>\n
Stripping operation<\/strong><\/p>\nEjecting castings with ejecting rod, ejecting block and other mechanical ejecting devices. During the process, the ejection force is even and the local deformation of the casting is avoided. You can also apply release agent to the surface of the mold to reduce friction and make the release smoother.<\/p>\n
<\/span>Conclusion<\/span><\/h2>\nGraphite mold casting process, with its unique characteristics and advantages, plays an important role in modern manufacturing industry. Through reasonable selection of materials, fine molding, precise control, you can produce high-quality castings.<\/p>\n
<\/span>FAQS<\/span><\/h2>\n<\/span>How long does Graphite Mold Last?<\/span><\/h3>\nGenerally speaking, the service life of graphite molds is between 100-1000 times. Its life is affected by casting materials, process parameters, maintenance and other factors. Under normal use and maintenance, you can use it dozens to hundreds of times. Casting aluminum alloy such as the process of small mold loss, mold life is longer. High temperature, highly corrosive metal casting is shorter.<\/p>\n
<\/span>In the process of graphite molding, what are the key factors affecting the quality of the mold?<\/span><\/h3>\nGraphite material quality:<\/strong><\/p>\nPurity, density uniformity affect mold performance, low purity impurities are easy to cause high temperature defects.<\/p>\n
Machining accuracy:<\/strong><\/p>\nDimensional accuracy and surface roughness are related to the quality of the mold. And insufficient accuracy will make the cavity size deviation and affect the casting molding.<\/p>\n
Molding process parameters:<\/strong><\/p>\nPressing pressure, temperature, time is not appropriate. These will cause the internal structure of the mold uneven, affect the strength and life.<\/p>\n
<\/span>Is the graphite mold easily damaged?<\/span><\/h3>\nDuring proper use and maintenance, it is not easily damaged. However, excessive temperature impact, mechanical stress, or improper external forces such as collisions during operation can lead to damage. After long-term use, surface wear and corrosion will also damage the mold, so correct operation and regular maintenance are very important.<\/p>\n
<\/span>Should you preheat graphite molds?<\/span><\/h3>\nPreheating is usually recommended. Preheating can reduce the temperature difference between the mold and the metal liquid, avoid the crack caused by thermal impact. And it also makes the metal liquid flow more smoothly in the cavity, which is conducive to casting molding. The preheating temperature is generally determined according to the type of casting metal and the mold material, between 100\u00b0C and 300\u00b0C.<\/p>","protected":false},"excerpt":{"rendered":"
Casting process is widely used in modern manufacturing industry. Graphite mold casting process has unique advantages, with special material characteristics and excellent performance. It provides solutions for the manufacture of high-precision complex parts, which is of great significance to improve the overall level of manufacturing. Graphite mold characteristics Material characteristics Graphite is a crystal structure […]<\/p>\n","protected":false},"author":3,"featured_media":7394,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7387","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-carbon-graphite"],"yoast_head":"\n
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