&Nbsp& Nbsp; Handmade shape design (core), handmade shape design methods include: sandbox shape design, split box shape design, stacked box shape design, unboxing shape design, pit shape design, scraper shape design, and core assembly design. There are more than 20 types of handmade shape design lights. The processing technology of weapons and equipment is simple, diverse in form, and has strong a

(1) It can almost produce precision cast iron platform castings of various shapes and quite complex& Nbsp& ⑵ Not constrained by the shape and weight of the parts, it can produce small parts weighing hundreds of grams and large parts weighing hundreds of tons& Nbsp& ⑶ The use of metals and alloys has a wide range of surfaces and can produce all alloy parts& Nbsp& (4) It can be produced individually

What factors affect the quality of cast iron parts? This website believes that the geometric shape, size, size effect, solidification, shrinkage, and stress of the first cast iron component. The structure, weight, and size of the second cast iron component. The third is the quality of the raw materials used for casting. The substandard quality of metal furnace materials, refractory materials, fuel

With the development of current castings towards high strength and lightweight, the market for ductile iron castings is relatively increasing. The production of thin and small ductile iron parts should be controlled to prevent white spots and hard edges. Solution:& Nbsp; (1) Control the chemical composition (2) Increase the gate, (3) Discharge the temperature of the molten iron from the furnace; 1

（1） Strictly require chemical composition, require higher carbon and silicon content in the original iron liquid than gray cast iron, and reduce the content of manganese, phosphorus, and sulfur in ductile iron& Nbsp; （2） The temperature at which molten iron is discharged from the furnace is higher than that of gray cast castings, and the temperature loss of molten iron during compensation spheroid