Henan lost foam coating

EPC EPC paint coating of cast iron, cast steel EPC coatings, alloy steel, high branded steel, high manganese steel, lost foam coating. Casting is good or bad depends on LFC paint, paint EPC ratio is crucial processes. A comprehensive grasp of EPC technology, based on the traditional casting paint just to play in the middle of casting and mold barrier isolators to achieve the purpose of the release of sand, but in ordinary casting coating high temperature due to poor adhesion, low intensity, fire poor, large gas evolution, making it easy to produce sticky sand casting, trachoma, porosity, carbon residue and other defects. Casting sticky sand is not valid because the coating acts as a barrier isolation, or paint with a high temperature metal liquid chemical reaction. 1. paint adhesion is poor: when vibrations caused by sand filling paint flaking, causing sticky sand casting, 2. Paint expansion coefficient: contact with hot metal liquid coating is heated volume expansion from the mold of the casting sticky sand. 3. The high temperature liquid metal is oxidized paint and mold and chemical reaction of metal oxides, paint and sand has strong adhesive properties, the ability to sand a series of low-melting compounds securely adhere to the casting surface [In casting thick-walled and on the corner, was more low-melting, sticky sand further back), resulting in sticky sand casting, sometimes not yet have a sticky sand, but in the casting surface adhesion of the coating layer is difficult to remove, and produce sticky ash. Casting trachoma: 1. There fall within the mold sand. 2 ,. low coating strength, fire resistance is poor, unable to withstand the high temperature liquid metal erosion, sand was involved in casting. Casting porosity: the causes are many, the most common is because more hair volume large mold material existence, the hair air speed, paint or sand poor ventilation, gas is not immediately removed due. I plant developed a new coating is to be cast in the traditional casting coating based on the improvement, adjustment, at a high temperature without cracking, not falling, high strength, and can effectively prevent the high temperature liquid metal oxidation, and the mold and the hot liquid metal contact process from a chemical reaction. At the same time can prevent generation of nitrogen, sulfur, carbon and other gases. Thus completely solve: sticky sand casting, casting sand holes, rough casting, casting porosity, casting slag inclusions [], milling variation iron, steel crack sulfide, carbon defects. The major products are: gray iron paint, paint ball milling cast iron, carbon steel casting coating, heat-resistant steel casting coatings, alloy steel casting coatings, high Rockwell steel casting coatings, high manganese steel casting coating, copper alloy casting coating, aluminum alloy coating magnesium alloy casting coatings.