Detecting mechanical properties, metallographic structure, number of graphite balls, high-tech thresholds promote the company's research and development in smelting technology and spheroidizing technology, forming the company's innovative proprietary technology in spheroidal graphite cast iron materials.
Main frame casting process design, casting process level Due to the material quality, external contour and dimensional accuracy of the internal combustion engine mainframe casting, the intrinsic quality and non-destructive testing requirements are high, the perfection of the casting process design, process planning control is the most critical development success. There are technologies. In this respect, relying on process design capability and solidification simulation technology for program optimization test, the level of computer simulation test will directly affect the success of actual trial production, development cycle, process stability, and pre-development cost. The internal quality and appearance quality of the main frame of the internal combustion engine have higher requirements than other types of castings. The internal quality has very detailed and strict inspection standards for shrinkage, slag inclusion, porosity, cracks and other defects, which makes the main frame castings in the process. The design and casting process control has the ability to plan, verify, summarize and improve.
Most of the main frame is designed to upgrade the requirements of gray cast iron materials to ductile iron or the direct design requirements are ductile iron materials. The ductile iron materials have significant shrinkage and shrinkage characteristics. The main frame casting process is filled with casting solidification simulation software MAGMA. Type, solidification simulation, predicting filling state, shrinkage and shrinkage, guiding the determination of process and process improvement, effectively ensuring process design reliability, shortening development cycle and reducing development costs. The main frame size accuracy requirement is higher than CT9 grade, and the sand casting method has to achieve the investment casting dimensional accuracy. The three-dimensional dimensional control method is adopted for the lower core size, which effectively ensures the dimensional accuracy of the casting. The core frame is used to produce the main frame: effectively avoiding the sand type exceeding the lifting capacity, avoiding the sand box tumbling due to insufficient rigidity, twisting and squeezing, and reducing the labor intensity of the tumbling operation and ensuring safe production. At the same time, the core gap is eliminated to the utmost extent, and the consumption of molten iron is reduced. The successful manufacture and application of the frame metal mold reduces the number of the core and the core box, reduces the control content of the joint box size, greatly reduces the difficulty of the joint box size control, improves the efficiency of the joint box, and ensures the overall casting. Dimensional accuracy.
High-quality castings bring high profits and high quality risks. Do a good job of standard understanding, technical planning, process planning and control, employee awareness, skill training and reinforcement, quality inspection planning control, effective internal and external communication and timely processing inspection of customers will be the guarantee of stable quality of mainframe castings and mass production. .
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Pujiang Longhui Machinery Co., LTD. , https://www.longhuimachinery.com