| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical concrete casting die which has superior transferability for complicated shape of cast products, less internal defects such as cavity, excellent mechanical properties such as vibration resistance, bending stress resistance and toughness, strong wear resistance at the corner and good surface stability against repetitive use. SOLUTION: In a female die with a design and shape copied from a cast product, high fluid, non-contractive mortar of 220 to 360 in fluidity is filled, set copying its surface pattern, and later taken out or stripped from the female die to be a concrete casting die. When necessary, fiber is put in or mixed. In this way mortar can penetrate into narrow corners of the female die matching with the complicated shape of cast product, minimizing such defects as shortage of filling and cavity so that the concrete casting die shows its advantages in printability, surface stability and economy.
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