Manufacturing method of special cast gold club head and shell mold thereof

Abstract

The invention discloses a manufacturing method of a special cast gold club head for improving the problem of difficult firm combination between a casting material and a special material in the prior art. The manufacturing method comprises the following steps: a shell mold is positioned on a rotating platform, and has a crucible part and a cast object part communicated with each other; at least one special material is locally embedded in the cast object part; the rest part of the special material is positioned in a mold cavity of the cast object part; a metal ingot is placed in the crucible part, and is heated for fusing to molten metal under vacuum environment; the rotating platform rotates to flow the molten metal into the mold cavity; after the molten metal is cooled and condensed, the shell mold is damaged to obtain a cast object; the cast object has a casting part; the casting part is separated from the cast object to obtain at least one golf club head casting; and the part, projected on the surface of the golf club head casting, of the special material is removed.

Description

technical field [0001] The present invention relates to a manufacturing method of a golf club head, in particular to a casting ladle which can be coated with different materials (different from the casting material) by the casting material while casting the golf club head body Disclosed is a method of manufacturing a golf club head made of different materials. Background technique [0002] At present, in order to meet different strike requirements such as "low center of gravity", "deep center of gravity", "vibration control" or "good play feeling", many golf club heads are equipped with different materials than the golf club head body. material to adjust the center of gravity or play feel of the overall golf club head; common different material settings include the toe (Toe), sole (Sole), heel (Heel), back (Back) of the golf club head body. ), Hosel or Face, etc. [0003] On the other hand, the current golf club heads are mostly in the atmosphere, with the help of the High...

AI Technical Summary

Problems solved by technology

Among them, in order to maintain good fluidity of the molten metal, the shell mold should be preheated at high temperature before casting; The foreign material in the shell mold will easily oxidize with the oxygen in the atmosphere, and an oxide layer will be formed on the surface of the foreign material, which will affect the bonding stability of the casting material and the foreign material after casting

Furthermore, due to gravity casting, the shell mold needs to be heated to a relatively high temperature, and the thermal expansion coefficients of the casting material and the foreign material are different, which often leads to the combination and loosening of the casting material and the foreign material after cooling down.

[0004] In addition, casting golf club heads by static gravity casting requires additional consumption of materials to maintain the pressing effect, so as to increase the formability of the golf club head castings, and avoid poor molding due to insufficient pressing effects; however, it is necessary to prepare additional materials and consume energy to melt them, which is one of the reasons why casting costs are difficult to reduce

[0005] It is worth mentioning that if the casting material used contains active metal, the active metal in the casting material will undergo a violent oxidation reaction when melting the casting material, which not only increases the difficulty of melting, but also easily reacts with air during casting. Oxidation and burning cracks occur, resulting in appearance defects such as sesame spots and black beans on the golf club head casting after casting, and even a large number of slag holes or reaction pores and other casting defects are formed on the golf club head casting by the reaction gas; and , the severe oxidation reaction will also cause the fluidity of the molten metal in the shell mold to decrease, and it is easy to reduce the molding yield of golf club head castings due to insufficient casting, or the problem of cold shut Formation of gaps in club head castings that affect the tensile strength of golf club head castings

Therefore, when casting a golf club head with a different material in the static gravity casting method in the atmosphere, if the casting material containing active metal is used, the molding yield of the casting will be even more unsatisfactory

Images