Technique device for improving core sand deformability and collapsibility of device
A technical device and concessional technology, which is applied in the direction of cores, casting molding equipment, casting molds, etc., can solve the problems of poor concessionality, heavy repair work, and many crack defects, and achieve the effect of reducing crack defects and reducing the scrap rate
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[0012] The technical solution of this patent will be described in further detail below in conjunction with specific embodiments.
[0013] See figure 1 , A technical device for enhancing the regressiveness and collapsibility of its core sand, comprising sand core 1, sand core bone 2, sawdust sand 3, wire mesh 4 and core box 5, the outer layer of the sand core is made of aggregate It is combined with the core sand to form a sand core surface layer with a certain strength, and the inner layer is a highly collapsible and highly regressive sand core inner layer made of a mixture of core sand and low ignition point materials in a certain proportion.
[0014] Further, the aggregate in the outer layer of the sand core is a wire mesh woven by metal wires (diameter 0.5mm-1mm), and the size of the mesh is 10X10 (mm).
[0015] Further, the inner layer of the sand core is sawdust sand with a low ignition point.
[0016] Further, the mixing ratio of the sawdust sand and the core sand in the inner ...
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