摘要:
A metal mold for manufacturing amorphous alloy. A metal mold is composed of a lower mold having a portion for fusing metal material and a cavity portion, and an upper mold working with the lower mold which presses molten metal in the portion for fusing metal material and pours the molten metal into the cavity portion to mold. And, surface roughness of a part of or all of an inner surface of the metal mold is arranged to be more than 12S in JIS indication.
摘要:
A metal mold for manufacturing amorphous alloy. A metal mold is composed of a lower mold having a portion for fusing metal material and a cavity portion, and an upper mold working with the lower mold which presses molten metal in the portion for fusing metal material and pours the molten metal into the cavity portion to mold. And, surface roughness of a part of or all of an inner surface of the metal mold is arranged to be more than 12 S in JIS indication.
摘要:
A metal mold is composed of a lower mold having a portion for fusing metal material and a cavity portion, and an upper mold working with the lower mold which presses molten metal in the portion for fusing metal material and pours the molten metal into the cavity portion to mold. And, the portion for fusing metal material is composed of a material having a heat conductivity equal to or less than 250 kcal/(m·h·° C.).
摘要:
A metal material is placed on a lower mold of a press metal mold which has an upper mold and the lower mold not having engagement portions. The metal material is fused by a high energy heat source, and obtained molten metal over a melting point is pressed with the press metal mold and transformed into a predetermined configuration. The molten metal is cooled at a rate over a critical cooling rate simultaneously with or after the transformation, and the molded product of amorphous metal in predetermined configuration is obtained.
摘要:
A golf club which has a clubface of desired shape comprising an alloy metal is provided. The golf club has excellent strength properties as well as excellent ball hitting properties. The clubface is free from casting defects such as cold shuts, and preferably, free from the crystalline phase formed from crystal nuclei through nonuniform nucleation since the club face is produced in a simple, highly reproducible, one-step process by selectively cooling the molten metal at a temperature above the melting point at a rate higher than the critical cooling rate, and the product comprises a single amorphous phase. The metallic glass face used in the golf club is produced by filling a metal material in a hearth; melting said metal material by using a high-energy heat source which is capable of melting said the metal material; pressing said the molten metal at a temperature above the melting point of said the metal material to deform the molten metal into the desired shape by at least one of compressive stress and shear stress at a temperature above the melting point, while avoiding the surfaces of the molten metal cooled to a temperature below the melting point of said the metal material from meeting with each other during the pressing; and cooling said the molten metal at a cooling rate higher than the critical cooling rate of the metal material simultaneously with or after said the deformation to produce the metallic glass face of desired form.
摘要:
A metal material is placed on a lower mold of a press metal mold which has an upper mold and the lower mold not having engagement portions. The metal material is fused by a high energy heat source, and obtained molten metal over a melting point is pressed with the press metal mold and transformed into a predetermined configuration. The molten metal is cooled at a rate over a critical cooling rate simultaneously with or after the transformation, and the molded product of amorphous metal in predetermined configuration is obtained.
摘要:
In a golf club head having a face body, the face body is composed of a hybrid of an amorphous phase layer and a crystal phase layer. The crystal phase layer is disposed on a reverse face side of a face. And, thickness of the face body is 0.5 mm to 5.0 mm, thickness of the amorphous phase layer is, on average in whole area of the face body, more than 50% of the thickness of the face body, and thickness of the crystal phase layer is arranged to be 0.01 mm to 3.0 mm.
摘要:
A zirconium system amorphous alloy having a composition expressed by a general formula Zr100-X-Y-a-b Tix Aly Cua Nib wherein a, b, X, and Y in the formula represent atomic percentage, and fulfill X 5, Y
摘要翻译:具有由通式Zr100-XYab Tix Aly Cua Nib表示的组成的锆系非晶合金,其中式中的a,b,X和Y表示原子百分比,并且满足X <10,Y> 5,Y < - ( 1/2)X + 35 / 2,15 <= a <= 25和5 <= b <= 15,锆系非晶合金具有大于合金体积的50体积%的非晶相。
摘要:
A golf club head comprises a face part defining a face for striking a golf ball, and at least a part of the face part made of an alloy satisfying the following three conditions: (1) the alloy is composed of at least three different metallic elements whose group numbers in the periodic system are at least two consecutive numbers; (2) a difference in the atomic radius between at least two of said at least three different metallic elements is not less than 10%; and (3) the heat of mixing of the element that is the major component of the alloy and at least one of the remaining components or the remaining component is not less than −10 kcal/mol.
摘要:
A metallic material containing both a second constituent and a third constituent having positive and negative heats of mixing relative to a first constituent, respectively, and including a compound, an alloy or a nonequilibrium alloy having a melting point that is higher than the solidifying point of a metal bath made of the first constituent is placed in the metal bath. The metal bath is controlled to a temperature lower than a minimum value of a liquidus temperature within a range of compositional variations in which the amount of the third constituent in the metallic material decreases down to a point where the metallic material becomes substantially the second constituent so that the third constituent is selectively dissolved into the metal bath.