there are five main types of metalcasting defects: gas porosity, shrinkage defects, mold material defects, pouring metal defects, and metallurgical defects?
Question 4: Industrially, the centrifugal casting of railway wheels was an early application of the method developed by German industrial company ________ and this capability enabled the rapid growth of the enterprise.
Question 5: This process takes advantage of the low ________ of foam to simplify the investment casting process by removing the need to melt the wax out of the mold.
Question 8: Although generally used for small castings, this process has been used to produce complete aircraft door frames, with steel castings of up to 300 kg and ________ castings of up to 30 kg.