A difficult foundry problem about the cast shaping of the small and deep holes in the heavy section steel castings can be solved by using the no bake sand. for making cores.
用这种型砂制作型芯，可解决厚大铸钢件内不易铸出的小径深孔腔室的成形难题。
A small apparatus used for simulating cooling environment of heavy section ductile iron castings was developed by authors themselves.
自行研制了模拟厚大铸件的冷却环境的小型凝固装置。
Using copper alloy mould to make the small-sized and thin wall ductile iron castings is a new technology in the foundry field.
采用铜合金金属型生产小型薄壁球墨铸铁件是铸造领域一项新技术。
In this paper, the string casting technique of small ductile iron castings with thick section were introduced.
介绍了厚实的球铁小件首尾相连组合串铸的工艺。
After using this binder for small serial production of testing castings, it has been proved that the petrolic residuum binder can be perfectly used in the production of iron castings.
经过小批量试浇，说明渣油粘结剂用于铸铁件的生产是完全可行的。
Sand molds for the production of small and medium-sized castings are made in a molding box. The mold is made in two or more parts in order that the pattern may be removed.
中小型尺寸的铸件砂型是在一个砂箱中制造，砂型由两部分或更多部分组成，以利于模型的顺利取出。
Sand molds for the production of small and medium-sized castings are made in a molding box. The mold is made in two or more parts in order that the pattern may be removed.
中小型尺寸的铸件砂型是在一个砂箱中制造，砂型由两部分或更多部分组成，以利于模型的顺利取出。
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