How do you choose the fine-tuning method?

A sand mold was used. According to statistics, in China or internationally, 60% to 70% of castings are made of sand, of which about 70% are made of sand. The main reason is the higher cost of foundry sand compared to other casting methods.
The production process is simple and the production cycle is short. Therefore, castings such as automobile engine block, cylinder head and crankshaft are all cast with clay green sand. If the green sand does not meet the requirements, the use of sand, dry sand, dry sand or other sand should be considered. floor
The number of castings for green sand casting may vary from a few kilograms to tens of kilograms, while the castings for dry clay casting may weigh tens of tons. Generally, iron castings with hardened sand can be used for medium and large castings, and steel castings can be used in the form of water glass sand.
Get precise, smooth surface parts, but at a higher cost. Of course, the casting accuracy, surface quality, raw material load, metallographic structure and mechanical properties of sand castings are often poor. Therefore, if these performance requirements for castings are high, these requirements should be adopted.
Use other casting methods such as casting (wax casting), casting, low pressure casting, etc. High-performance castings produced in small batches remain an important process method. Expert skills are available for different types of disordered needs and are insensitive to many processes. Water glass sand mould, VRH water glass sand mould and organic ester water glass self-hardening sand can be used.
mold, clay dry mold, resin no-bake sand mold, cement sand mold, etc.; for single-layer castings, the mine modeling method is used for low production cost and high speed. Mass-produced or long-run shaped products are more suitable for multi-cardboard setting and cardboard setting methods, despite the shape and sand
High investment such as unpacking, but it can save engraving time and improve product quality to be compensated. Casting processes such as low pressure casting, casting, and casting are suitable for mass production due to expensive equipment and shapes. For small castings, enter horizontally or
The straight box-free high-pressure molding production line has high production energy and small footprint; the middle part can produce various types of box-type high-pressure molding machine production lines and air punch production lines, with models with fast customization and high precision. Line Requirements, Core Method Options
Uses: High-efficiency nuclear manufacturing methods such as core boxes, hot core boxes, and shell cores. Large batches of intermediate batches can be considered for resin-free sand and core formation.