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Vermicular graphite cast iron

Vermicular graphite cast iron production process control

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Vermicular graphite cast iron has excellent performance such as high wear resistance, shock absorption and superior comprehensive heat fatigue resistance, and has been widely used in production. There are many factors that affect the production stability of cast vermicular graphite cast iron. To produce vermicular graphite cast iron stably and reliably, it is necessary to […]

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sand and slag inclusion defects

Solutions to common sand and slag inclusion defects in lost foam

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In lost foam products, common defects mainly include sand inclusion and slag inclusion defects. To solve sand and slag inclusion defects, we must first systematically and comprehensively analyze the causes of the defects and find the causes to better formulate corresponding measures. Defect analysis In the production of lost foam, the preparation of coatings is

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cast iron inoculants

Research on cast iron inoculants

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Before pouring molten iron, under certain conditions (such as certain overheating temperature, chemical composition, appropriate addition method, etc.), a certain amount of substance (inoculant) is added to the molten iron to change the solidification process of the molten iron, improve the cast structure, and thus achieve the purpose of improving performance. This is called inoculation

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Ductile iron defects related to spheroidizers

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Casting defects such as inclusions, holes, cracks (referring to pores, keyholes, cracks, cold shuts, etc.) often affect the mechanical properties, physical and chemical properties, and processing properties of castings, and determine the quality of castings. Ductile iron parts may produce almost all casting defects, but due to its production method, crystallization law, casting performance and

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clay wet sand molds

Principles for setting risers in clay wet sand molds

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Clay wet sand molds have poor rigidity, causing cavity expansion. Factors include sand quality, mold compactness, pouring temperature, and molten iron pressure. The actual volume expansion can be between 2% and 8%. Since the volume expansion of the mold cavity varies greatly, the principles for setting risers will of course vary depending on the specific

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