JPH02234777A - Surface treatment for club head - Google Patents

Abstract

PURPOSE:To provide the face of an iron club which can provide accurate directional property and stop property by a spin by a method wherein heat treatment, e.g. refining treatment, is applied on a molded iron material, and chemical plating is applied on a surface. CONSTITUTION:Heat treatment, e.g. refining treatment, is applied in a molded iron material, and chemical plating is applied on a surface. An iron material, e.g. normal cast iron, an alloy steel, and a metallic histologically normal steel, having a transformation point, is applicable as the molded iron material. Heat treatment includes refining treatment, e.g. removal of an internal stress due to forging, refining of crystal particles, and various kinds of heat treatment for regulating surface hardness and providing toughness, e.g. quenching, tempering, where necessary. Chemical plating is electric plating, especially plating treatment on a metal, and a metal, e.g. nickel, chrome, having a corrosion-proofing function is used as a metal to be chemically plated, and treatment by ceramics and Teflon(R) can be applied where necessary. In the case of chemical plating, a precipitation metal is uniform throughout the whole and has excellent denseness, and a thin plated layer can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for surface treatment of the face of a golf club head, particularly an iron club head made of soft iron.

[Conventional technology]

In recent years, as golf balls with high resilience have come into widespread use, there is a tendency for club heads to have high hardness.

In particular, with iron clubs and putters, the use of high-repulsion balls means that the direction of the ball and the amount of spin will be subtly affected, and in order to fully utilize these characteristics, the hardness of the face must be adjusted. It is necessary to adjust the friction coefficient of the surface.

For this reason, various proposals have been made to deal with this by adopting iron club heads made of various non-ferrous metals or by surface processing.

In the case of iron club heads made of soft iron, surface treatments such as electroplating with chromium, nickel, etc., ceramic coating, Teflon processing, etc. are usually performed.

However, when treating the surface of a soft iron iron club head, it is best to clean the surface without performing any special refining treatment after casting or after forging, and then apply plating, etc. to prevent rust. Currently, surface treatments are being carried out.

[Problem to be solved by the invention]

It is known metallographically that soft iron has not only toughness but also excellent hardness depending on its heat treatment. This means that the soft iron material can maintain high hardness and high friction properties, which are the characteristics required of iron clubs for the modern high-repulsion golf balls mentioned above.

However, since the soft iron club hends that have undergone the above surface treatment are subjected to surface treatment while still being cast or forged, they suffer from a lot of internal stress, which affects the hardness, uniformity of the internal composition, and strength. There is a problem with that.

On top of that, the surface layer obtained through surface treatment is too thick, making it impossible to take advantage of the properties of the fabric.Furthermore, Teflon coating and other surface treatment methods are weak against impact and peel off. It has the disadvantage of being easy.

The problem to be solved by the present invention is an iron-based iron that can sufficiently exhibit accurate directionality and spin-stopping properties even for balls that have high repulsion properties and are difficult to spin, such as two-piece poles. The purpose is to obtain the face surface of the club head.

[Means for Solving the Problems] The present invention achieves the above-mentioned problems by subjecting a formed iron material to heat treatment such as tempering treatment, and then chemically plating metal on its surface.

As the above-mentioned shaped iron material, iron materials having a transformation point such as normal cast iron, alloy steel, or metallographically normal steel can be used.

In addition, as for heat treatment, in addition to heat treatment such as forging to remove internal stress and refinement of crystal grains, various heat treatments to adjust surface hardness and impart toughness such as quenching and tempering are performed as necessary. included.

Furthermore, the chemical plating referred to in the present invention corresponds to electroplating, especially as a plating treatment for iron materials.
Various processing methods commonly referred to as chemical plating can be applied.

Further, metals to be chemically plated include metals having a corrosion-proofing function, such as nickel and chromium, and if necessary, treatments such as ceramics and Teflon can be applied thereon.

[Effect]

Conventionally, in the electroplating applied to the iron club hand face surface, metal adhesion progresses to the side protrusions and corners of the face groove, and not only does an uneven original metal layer deposit, There is a problem in that the crystals of the deposited metal also grow.

On the other hand, in the case of chemical plating, the deposited metal is uniform throughout and has excellent density, so it forms a thinner plating layer than the conventionally used electroplating. can do.

As a result, even if the iron club head is made of iron, it can still exhibit the full characteristics of the iron club head obtained through heat treatment, and the problem of the plating layer peeling off can be solved.

〔Effect of the invention〕

(1) Due to the uniformity of the internal structure, there is no variation in the hardness of the surface that the ball hits, so the overall sweet spot becomes wider and the ball is more stable when it is hit. Additionally, the loft angle and lie angle can now be adjusted safely from the traditional 2-3 degrees to 5-6 degrees.

(2) It was possible to obtain an adhesive layer that had high adhesion to the fabric material of the iron club head, and no peeling occurred.

(3) Adjustment and management of plating conditions is easy and work efficiency is high.

(4) As for the material, commonly used medium carbon steel can be used, which is very cheap from a cost standpoint, and there is no need to use any expensive materials.

Patent applicant Seiichiro Teramoto

Claims (1)

[Claims] 1. A club head surface treatment method in which a formed iron material is subjected to heat treatment such as tempering treatment, and then chemical metal plating is applied to the surface.