Stainless steel golf club head manufacturing method

Abstract

A stainless steel golf club head manufacturing method is disclosed to alleviate the problem of a poor conversion ratio between a cast material and a cast object of a conventional vacuum casting method. The method comprises the following steps: a shell mold is positioned on a rotating platform, the shell mold contains a crucible part and a mold cavity part that are communicated with each other, the rotating platform is connected to a rotating shaft that can rotate axially, at least one metal ingot is placed on the crucible part of the shell mold, the metal ingot is heated and melted into a stainless steel metal liquid in a vacuum environment, the rotating shaft is driven and therefore the rotating platform can be driven to rotate in a linked manner. The stainless steel metal liquid is enabled to flow in to the mold cavity of the shell mold, the rotating shaft is stopped at a low speed, the casted shell mold is taken down, the shell mold is broken and therefore the cast object can obtained. Compared with the metal ingot, the cast object is less than 5% in weight loss coefficient, the cast object comprises a casting part, the weight of the casting part accounts for 65% to 85% of the total weight of the cast object, the casting part is separated from the cast object, and therefore at least one stainless steel golf club head can be obtained.

Description

technical field [0001] The invention relates to a manufacturing method of a golf club head, in particular to a manufacturing method of precision casting a stainless steel golf club head. Background technique [0002] Generally speaking, golf clubs can be divided into three categories: woods, irons and putters. At present, the materials commonly used for wood club heads and iron club heads are mostly stainless steel. On the other hand, golf club heads are mostly made of precision casting, and the current precision casting is mostly carried out in the atmosphere. The casting material is quickly melted with the help of a high frequency induction melting furnace (High Frequency Induction Furnace). Gas and other refining steps to remove slag and gas in molten metal, and then combined with static gravity casting, but this casting method has the following disadvantages: [0003] (1) Since the smelting casting is carried out by batching, the addition amount of various alloying elem...

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Problems solved by technology

[0003] (1) Since the smelting casting is carried out by batching, the addition amount of various alloying elements is calculated according to the stainless steel alloy to be produced to reasonably match the raw materials, but the reactivity of various alloying elements with oxygen or nitrogen in the atmosphere is different , so it is necessary to adjust the order and time of addition for each alloy element of the cast material, so as to increase the difficulty of operation

In addition, if the casting material contains alloying elements with low melting points (such as aluminum, manganese, silicon, etc.), it is easy to cause splashing during the process of melting the molten metal, resulting in loss of the casting material

[0004] (2) After the prepared casting materials are melted, the refining step of slagging is required to collect the miscellaneous slag in the molten stainless steel metal, but the process of slagging usually loses 2~3% of the total metal content of the smelted casting materials , and the slag making step requires additional energy consumption, which will also increase the casting cost

[0006] (4) Gravity casting is adopted, so additional materials are required to maintain the pressure soup effect, so as to increase the formability of golf club head castings, and avoid poor molding due to insufficient pressure soup effect; however, additional materials need to be prepared and Consuming energy for melting, thus forming one of the factors that make it difficult to reduce casting costs

[0007] (5) During the casting process, if the casting action is not properly controlled, the molten stainless steel metal liquid will overflow or splash from the sprue cup, resulting in waste of casting materials

[0008] (6) After the casting is completed, the molten stainless steel metal liquid will be cooled and solidified to form a casting consisting of three major parts: the sprue cup part, the runner part and the casting part, and only the casting part belongs to the casting product, and the rest are all It is casting waste, so the yield rate of castings (yield, which is defined as: the total weight of casting products / the total weight of casting products and casting waste) is difficult to improve

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