Precision casting technology requirements

Such as sand casting, mass production factories should create conditions for using advanced technology and styling, making the core method . Old-fashioned style shock or shock compression molding machine production line productivity is not high enough , labor intensity , noise, not suited for mass production requirements, should gradually be transformed . For small castings, can be horizontal or vertical parting parting of flaskless pressure molding machine production line, real style and high production efficiency , the area is also less ; pieces can be used for a variety of in a box high pressure molding machine production line, gas impact molding line to adapt to rapid , high-precision molding production line requirements , making the core method can be used: cold box , hot box , core- shell core and other efficient methods .
Moderate quantities of large castings can consider the application of self-hardening resin sand molding and core making .

Single and small batch production of heavy castings, hand molding is still an important method of hand-shape can adapt to a variety of complex requirements more flexible and does not require a lot of technical equipment . Can be applied to water glass sand , VRH law silicate sand , organic esters Sodium Silicate sand , dry clay , sand and cement resin self-hardening sand , etc. ; For a single- piece production of heavy castings, pit modeling method using low cost, production fast. Mass or long-term production of styling products using multi- box modeling , box modeling method is more suitable for splitting , although molds, sand box , etc. started to invest high, but modeling work from savings , improve product quality be compensated.

Low-pressure casting , die casting, centrifugal casting and other casting methods , equipment and tooling are expensive, so only suitable for mass production. Conditional method should be suitable for
The same example is the production of large-scale machine bed castings , the general shape of the core group of law does not make appearance and sand box , on the ground pit group core ; while another plant sand box modeling method is used , the production looks like. Different production conditions ( including equipment , space, staff quality , etc. ) , production habits are not the same experience , it should be considered under these conditions for what products and is not suitable ( or not ) what product .

Accuracy requirements and cost
Obtained by the method of casting precision casting different initial investment and productivity is also inconsistent , and ultimately economic benefits are also differences. Therefore , to do more, faster , better and cheaper , they should take into account all aspects . Respond to the chosen method of casting a preliminary cost estimate to determine the economic efficiency but also ensures that the requirements of foundry casting method .