Mass production, for example, China Investment Casting factory should create conditions for using the modelling of advanced technology, core making method. Old jar type or shock squeeze moulding machine production line productivity is not high, workers labor intensity, large noise, not adapt to the requirement of mass production, shall be modified step by step. For small castings, can use horizontal parting or vertical parting flaskless type high pressure molding machine production line, solid modeling and production efficiency is high, covers an area of less; For the thing that can be used in various cases of high pressure molding machine production lines, air impact molding line, in order to adapt to the requirement of fast, high precision molding production lines, core making method can be used: cold core box, hot core box, shell core efficient core method, etc.
Medium batch of large castings can consider application self-hardening resin sand molding and core making.
Sheet small batch production of heavy castings, manual modeling is still the important method, manual can meet the requirements of various complex is more flexible, does not require a lot of process equipment. Can be used sodium silicate sand, sodium silicate sand mold VRH law, organic ester sodium silicate self-hardening sand, clay self-hardening sand mould and dry type, resin cement sand mold, etc.; For a single production of heavy castings, pit modelling method of low cost, fast production.
Batch production or long-term production of finalize the design product box, split box shape modelling method is appropriate, although high mould and sand box to start investing, but from compensated save modelling cycle time, improve the quality of its products. Low pressure casting, die casting, centrifugal casting and other casting method, for equipment and mold is expensive, so only suitable for mass production. Conditions shall be suitable for methods such as also is the production of large machine tool bed casting, generally USES the core modelling method, don't make shape and sand box, core in a hole in the ground; While other factories use sand box modelling method, production.
Different enterprise production conditions (including equipment, sites, staff quality, etc.), production habits, accumulated the experience of each different, what should be considered according to these conditions suitable for products and is not suitable for (or not) to do the product. Accuracy requirements and cost of all kinds of casting method for precision castings, initial investment are not uniform and productivity, the economic benefits of the final also have differences. Therefore, to do more, faster, better, the province, all aspects should give attention to two or morethings arrives. Selected for dealing with the casting method carries on the preliminary cost estimate, to determine the economic benefit is high and can ensure the requirements of the casting foundry method.