Sand casting is the most widely used, producing the largest amount of a basic casting method. Although a variety of special casting
1.2 Foundry binder with the sand core binder
Adhesive bonding is used to connect a variety of objects or materials, or a class of substances, mainly composed of sticky adhesive material, combined upper and lower half of the core role, while preventing the infiltration of liquid metal core sub-surface difficult to clean up the casting Phi inside seam, so it is known as the sand core binder. they are an important casting supporting material.
(a) All Box Figure (b) Group Core Figure
Figure 1 sand core and sand core assembly diagram
Fig 1 Assemble sketches of sand moulds and sand cores
(a) moulds assemble, (b) cores assemble
Table 1 Experimental Program
Table 1 Experiment scheme
φ / ° 90 120 150
f 0.05 0.05 0.05
0.2 0.2 0.2
v / (mms-1) 0.2 0.2 0.2
111
5 Conclusion
(1) can water glass-based adhesive, with the quartz powder filler and bentonite suspension for preparing a new type of inorganic sand core binder.
(2) affect the sand core binder is a major factor in the amount of added sodium silicate and bentonite, which is to control the viscosity of bentonite