The principle of casting method selection:
铸造方法选择的原则：
1
Preference for sand casting, the main reason is that sand casting
compared with other casting methods low cost, simple production process,
short production cycle.
1 优先采用砂型铸造,主要原因是砂型铸造较之其它铸造方法成本低、生产工艺简单、生产周期短。
When
the wet type can not meet the requirements, then consider using clay
sand table dry sand type, dry sand type or other sand type.
当湿型不能满足要求时再考虑使用粘土砂表干砂型、干砂型或其它砂型。
The
weight of castings cast by clay wet sand can range from a few kilograms
to tens of kilograms, while castings produced by clay dry type can
weigh tens of tons.
粘土湿型砂铸造的铸件重量可从几公斤直到几十公斤，而粘土干型生产的铸件可重达几十吨。
2 The casting method should be adapted to the production batch.
2 铸造方法应和生产批量相适应。
Low
pressure casting, die casting, centrifugal casting and other casting
methods, because of the expensive equipment and mold, so only suitable
for mass production.
低压铸造、压铸、离心铸造等铸造方法，因设备和模具的价格昂贵，所以只适合批量生产。
3 Modeling method should be suitable for factory conditions.
3 造型方法应适合工厂条件。
For
example, the same is the production of large machine tool bed castings,
generally using the core modeling method, do not make patterns and sand
boxes, core formation in the pit;
例如同样是生产大型机床床身等铸件，一般采用组芯造型法，不制作模样和砂箱，在地坑中组芯；
And other factories use the sand box modeling method to make patterns.
而另外的工厂则采用砂箱造型法，制作模样。
Different
enterprise production conditions (including equipment, sites, staff
quality, etc.), production habits, accumulated experience are different,
should be based on these conditions to consider what products are
suitable for doing and not suitable for (or can not) do what products.
不同的企业生产条件（包括设备、场地、员工素质等）、生产习惯、所积累的经验各不一样，应该根据这些条件考虑适合做什么产品和不适合（或不能）做什么产品。
