Precision casting method for metal objects

Abstract

The invention discloses a precision casting method for metal objects. The method includes the following steps that A, model making is performed, beewax is used for making a casting model, and an outline and a clay core are combined in a sleeving mode to form a cavity; B, preheating is conducted, the outline and the clay core are combined in the sleeving mode to be heated with small fire at first, slow cooling is performed, and then the outline and the clay core are put into a furnace kiln to be heated at a high temperature; C, pouring is carried out, molten copper is poured into a pouring gate, and after the molten copper is solidified and cooled, the outline and the core can be removed to take out a copper billet casting; D, a copper billet is polished; and F, decorating and surface coloring are carried out, the polished product is decorated, surface coloring is conducted after the product is decorated, and accordingly a finished product can be obtained. By the adoption of the method, rupture and sand holes cannot happen to the casting formed through the outline and the clay core easily, molten copper mobility can be improved by preheating the outline and the clay core, and therefore the molten copper injected into the cavity can be evenly filled, and the density and hardness of the finished product are improved; and in addition, through the reasonable technology, manufactured copper ware is fine and smooth in surface, delicate in modeling, dainty and exquisite and good in ornamental value.

Description

technical field [0001] The invention relates to a manufacturing method of copper handicrafts, in particular to a precision casting method of metal utensils. Background technique [0002] Because of its very high ornamental value, copper crafts have been widely loved by people since ancient times, and the craftsmanship of copper crafts has also continued from ancient times to the present. Although the development of existing technologies, the craftsmanship of copper crafts has gradually improved. Improvement, the techniques used in different copper crafts are also varied. However, with the improvement of people's living standards, people's requirements for the exquisiteness and delicacy of copper crafts are also getting higher and higher. The existing copper crafts The art production process needs to be further improved. However, due to the defects in the specific process (such as baking and pouring) steps in the existing copper art production process, on the one hand, there ...

AI Technical Summary

Problems solved by technology

[0002] Because of its very high ornamental value, copper crafts have been widely loved by people since ancient times, and the craftsmanship of copper crafts has also continued from ancient times to the present. Although the development of existing technologies, the craftsmanship of copper crafts has gradually improved. Improvement, the techniques used in different copper crafts are also varied. However, with the improvement of people's living standards, people's requirements for the exquisiteness and delicacy of copper crafts are also getting higher and higher. The existing copper crafts The art production process needs to be further improved. However, due to the defects in the specific process (such as baking and pouring) steps in the existing copper art production process, on the one hand, there will be cracks and blisters. On the other hand, the density and hardness are not enough, and it is easy to deform. On the other hand, the requirements of high fineness and fineness cannot be obtained.