Disclosed herein is a casting cluster for casting a body of a golf club head made of titanium or a titanium alloy. The casting cluster comprises a receptor and a plurality of runners coupled to the receptor and configured to receive molten metal from the receptor. The casting cluster also includes at least forty main gates. At least two of the main gates are coupled to each of the runners and each main gate is configured to receive molten metal from a corresponding one of the plurality of runners. The casting cluster further comprises at least forty molds. Each mold of the at least forty molds is configured to receive molten metal from a corresponding one of the main gates and to cast a body of an iron-type golf club head.

Disclosed herein is a casting cluster for casting a body of a golf club head made of titanium or a titanium alloy. The casting cluster comprises a receptor and a plurality of runners coupled to the receptor and configured to receive molten metal from the receptor. The casting cluster also includes at least twenty-eight main gates. At least two of the main gates are coupled to each of the runners and each main gate is configured to receive molten metal from a corresponding one of the plurality of runners. The casting cluster further comprises at least twenty-eight molds. Each mold of the at least twenty-eight molds is configured to receive molten metal from a corresponding one of the main gates and to cast a body of a golf club head that has a volume of at least 100 cm.sup.3.

Disclosed herein is a casting cluster for casting a body of a golf club head made of titanium or a titanium alloy. The casting cluster comprises a receptor and a plurality of runners coupled to the receptor and configured to receive molten metal from the receptor. The casting cluster also includes at least forty main gates. At least two of the main gates are coupled to each of the runners and each main gate is configured to receive molten metal from a corresponding one of the plurality of runners. The casting cluster further comprises at least forty molds. Each mold of the at least forty molds is configured to receive molten metal from a corresponding one of the main gates and to cast a body of an iron-type golf club head.

A screw smelting machine melts raw materials with a different chemical ratio in a mixing funnel in a feeding order to prevent the long-range diffusion of a melt, and controls outflow at a suitable speed. A centrifugal casting machine solidifies the melt with the ingredients gradient varying into a radial ingredient gradient material by a centrifugal casting style. A temperature sensor monitors temperature of an outer surface of a centrifuge cavity of the centrifugal casting machine during centrifugal casting, and transmits the temperature to a control platform. The control platform determines an optimal flow rate of the melt at an end of screw rod according to ingredient gradient of ingredient radial-gradient pipe materials and a thickness of each component gradient material required with preparation, in combination with a real-time data fed back from the temperature sensor, and feeds back to a feeding end.

Disclosed herein is a casting cluster for casting a body of a golf club head made of titanium or a titanium alloy. The casting cluster comprises a receptor and a plurality of runners coupled to the receptor and configured to receive molten metal from the receptor. The casting cluster also includes at least twenty-eight main gates. At least two of the main gates are coupled to each of the runners and each main gate is configured to receive molten metal from a corresponding one of the plurality of runners. The casting cluster further comprises at least twenty-eight molds. Each mold of the at least twenty-eight molds is configured to receive molten metal from a corresponding one of the main gates and to cast a body of a golf club head that has a volume of at least 100 cm.sup.3.

A fluid blow-out structure of a centrifugal casting device 1, for blowing out a fluid to inner surface of a rotating cylindrical mold 2, including: fluid application outer tube 5 inserted into the mold 2; movable mechanism 6 supporting a base end of the fluid application outer tube 5; outlet 8 through which the fluid is blown out, the outlet 8 provided at a leading end of the fluid application outer tube 5; fluid supply tube 9 inserted in the fluid application outer tube 5 and connected to the outlet 8; and guide mechanism 7 contacting an outer circumferential surface of the fluid application outer tube 5, and guides the fluid application outer tube 5 into and out of the mold 2. The fluid application outer tube 5 includes a resin hollow tube 10 and a metal tube 11 covering outer circumferential surface of the resin hollow tube 10.

A fluid blow-out structure of a centrifugal casting device 1, for blowing out a fluid to inner surface of a rotating cylindrical mold 2, including: fluid application outer tube 5 inserted into the mold 2; movable mechanism 6 supporting a base end of the fluid application outer tube 5; outlet 8 through which the fluid is blown out, the outlet 8 provided at a leading end of the fluid application outer tube 5; fluid supply tube 9 inserted in the fluid application outer tube 5 and connected to the outlet 8; and guide mechanism 7 contacting an outer circumferential surface of the fluid application outer tube 5, and guides the fluid application outer tube 5 into and out of the mold 2. The fluid application outer tube 5 includes a resin hollow tube 10 and a metal tube 11 covering outer circumferential surface of the resin hollow tube 10.

An aluminum alloy wheel for a vehicle is provided, which includes: a wheel central portion, a rim portion, and a plurality of radial elements, wherein the aluminum alloy wheel is processed by centrifugal casting and forging to form a central portion with a morphology exhibiting a grain size variation with decreasing gradient in a lateral direction from an inner side of the wheel central portion to an outer side thereof.

Disclosed herein are refractory coating compositions with improved drying times, defect prevention, and gas permeability and methods for using such refractory coating compositions.

A system and method for moulding metal parts having a first metal structure (4) which is integrally attached to a rotating machine, where said structure (4) is associated with a cover (3) and a plurality of fastening elements (1, 2), and where, in turn, the structure (4) is integrally attached to a cylindrical metal die (5) containing a ceramic mould (7) and hardened sand (6) for filling the die (5).