KR970003300B1 - Watch band made of hard-metal and stainless steel - Google Patents

Watch band made of hard-metal and stainless steel Download PDF

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Publication number
KR970003300B1
KR970003300B1 KR1019940015722A KR19940015722A KR970003300B1 KR 970003300 B1 KR970003300 B1 KR 970003300B1 KR 1019940015722 A KR1019940015722 A KR 1019940015722A KR 19940015722 A KR19940015722 A KR 19940015722A KR 970003300 B1 KR970003300 B1 KR 970003300B1
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South Korea
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stainless steel
band
carbide
cemented carbide
spot welding
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KR1019940015722A
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Korean (ko)
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KR960003631A (en
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유장춘
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주식회사 서울정공
이종학
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Publication of KR970003300B1 publication Critical patent/KR970003300B1/en

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    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44CPERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps

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  • Adornments (AREA)

Abstract

The band production process welds on the stainless thin plate(2) in one side of carbide(1) processed in a precision way and connect them. The carbide joined with the stainless thin plate(2) is connected to the upper part of fundamental band made of stainless material and is entirely put together by spot welding(4). The carbide and stainless thin plate are connected to fundamental band through braze welding. At this moment, the connection is made by heating instantly and locally through spot welding so that generating crack and break of carbide caused by the difference of thermal expansion coefficient is prevented.

Description

스테인레스와 초경의 복합소재로 된 손목시계용 밴드의 제작방법How to make a wristband made of composite material of stainless steel and cemented carbide

제1도는 본 발명의 따른 손목시계용 밴드의 일부 분해사시도.1 is an exploded perspective view of part of a wristband for wristwatch according to the present invention.

제2도는 본 발명의 완성된 상태의 측면도.2 is a side view of a completed state of the present invention.

제3도는 본 발명의 일부 확대 평면도로서 점용접(Spot welding)부위를 표시한 상태의 평면도.3 is a partially enlarged plan view of the present invention, showing a spot welding portion.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 초경(텅스텐 카바이드) 2 : 스테인레스 박판1 cemented carbide (tungsten carbide) 2 stainless steel sheet

3a : 기초밴드 3 : 밴드(완성된 밴드)3a: basic band 3: band (completed band)

본 발명은 스테인레스와 초경의 복합소재로된 손목시계용밴드의 제작방법에 관한 것이다.The present invention relates to a method of manufacturing a wristband band made of a composite material of stainless steel and cemented carbide.

더욱 상세히는 시계밴드를 형성함에 있어서 기존 소재를 스테인레스로 하되 그 외부면에 경도가 높은 초경을 일체화로 부착시켜 시계의 고급화와 상품성을 향상시킴과 동시에 경제성을 갖도록 한 스테인레스와 초경의 복합소재로된 시계밴드를 제공하고자 한 것이다.In more detail, in forming the watch band, the existing material is made of stainless steel, but it is made of a composite material of stainless steel and cemented carbide which has high hardness and improved commerciality by attaching cemented carbide to the outer surface as one body. To provide a watch band.

손목시계용 밴드의 소재로 사용되고 있는 초경과 스테인레스는 다음의 "표1"과 같은 성질을 가지고 있다.Cemented carbide and stainless steel, used as wristbands, have the properties shown in Table 1.

[표 1 손목시계용 밴드 재료의 성질]Table 1 Properties of Band Materials for Watches

(초경계의 재료는 소재 생산업체인 대한중석(2) 중앙연구소 제공 자료 및 일본 나미끼정밀의 자료임.)(Materials of the hard border are provided by Korea Research Institute (2) Central Research Institute, a material producer, and Namiki Precision, Japan.)

일반적으로 손목시계는 몸체와 밴드는 동일한 소재 (예로서 스테인레스 몸체에 스테인레스 밴드)로 만들어져 사용되어 왔으나 같은 기간을 사용할 경우 외관이나 기능면에서 밴드쪽의 수명이 짧았다.In general, wristwatches and bands have been made of the same material (for example, stainless steel bands on stainless steel bodies), but when used for the same period, the life of the band is shorter in terms of appearance and function.

특히 근래에는 시계의 고급화추세에 의해 몸체 및 밴드를 흠집이 나지않는 초경 소재를 사용하고 있으나 국내에 있어서는 아직 초경가공 기술이 미흡할 뿐만 아니라 고가이어서 밴드는 스테인레스를 사용하고 있는 경우가 많다.In particular, in recent years, the use of cemented carbide materials that do not scratch the body and the band due to the trend of high-quality watches, but in Korea, the carbide processing technology is not only insufficient but expensive, so the band is often made of stainless steel.

이러한 경우 소정의 기간을 사용하였을 경우 실제 핵심부분인 시계몸체는 상태가 양호한데 경도가 약한 밴드에 흠집이나 상처가 쉽게 발생하여 전체적인 미감을 떨어뜨리는 결과를 초래하였으며 수용자는 이와 같은 문제점을 해소시키기 위하여 별도로 밴드를 구입교환하거나 더 나아가서는 시계자체를 새로 교환하였던 것으로 비경제적이었던 것이다.In this case, the watch body, which is the actual core part, is in good condition when a certain period of time is used, but scratches or scratches are easily generated in the band with weak hardness, resulting in a drop in the overall aesthetic. It was uneconomical to buy a new band or even a new watch.

한편, 홈과 상처를 극속화시키기 위하여 세라믹소재로 밴드를 제작 사용하고도 있으나 이는 디자인과 색상에 한계가 있어서 몸체와 어울리는 다양한 디자인연출이 불가능할 뿐만 아니라 특히 색상이 흑색과 밤색등으로 제한되어 있어 소비자의 기호에 맞는 색상이 연출이 어려웠던 것이다.On the other hand, in order to accelerate grooves and wounds, bands are made of ceramic materials, but they are limited in design and color, making it impossible to produce various designs that match the body, and in particular, the color is limited to black and brown. It was difficult to produce a color that suits the taste of.

이와 같은 연유에 의하여 생산성과 내구성이 높고 다양한 디자인과 색상을 연출할 수 있는 손목시계밴드가 절실히 요구되고 있다.Due to such condensed milk, there is an urgent need for a watch band that is highly productive and durable and can produce various designs and colors.

본 발명은 이와 같은 문제점을 고려하여 높은 경도로서 사용성이 향상되고 동시에 저가로 공급될 수 있도록한 초경과 스테인레스의 복합소재로된 손목시계용 밴드를 제공하고자 함에 있다.The present invention has been made in view of the above problems to provide a wrist band for a wristwatch made of a composite material of cemented carbide and stainless steel, which can be used at a high hardness and at a low cost.

본 발명의 방법에 의하면, 초경(wc계 텅스텐카바이드)을 시계 밴드에 적합하게 절단가공하고 절단 가공된 초경의 일측면부에 스테인레스박판을 경납용접(Brazing)에 의해 접합시킨 후 이와 같이 스테인레스박판이 접합된 초경을 스테인레스로된 기초 밴드의 상부면에 점용접(Spot Welding)시켜 일체화가 되도록 함으로써 완성된 밴드를 얻을 수가 있다.According to the method of the present invention, the cemented carbide (wc-based tungsten carbide) is appropriately cut into a watch band, and the stainless steel sheet is bonded to one side surface of the cut carbide by brazing. The finished band can be obtained by spot welding the cemented carbide to the upper surface of the base band made of stainless steel to be integrated.

우선 초경소재 (예 : WC계 텅스텐 카바이드)를 스테인레스에 접합시키는 기술에 있어서는, 저융점 합금(은납포함)을 용접제로한 경납용접(Brazing) 방법을 사용할 수 있으나 손목시계용 밴드의 제작에는 중요한 품질상의 하자를 발생시키는 문제점을 안고 있다.First of all, in the technique of joining cemented carbide materials (e.g., WC-based tungsten carbide) to stainless steel, a brazing method using a low melting point alloy (including silver) as a welding agent can be used. There is a problem that causes the defect.

예로서, 초경과 스테인레스를 강력히 접합시키기 위해서는 접합제(Solder)의 융점이 800∼900℃ 이상인 것을 사용하여야하고, 이 경우 소재역시 800∼900℃ 이상 가열되어야 하는데 첫째 : 용접후 냉각이 진행될때에 초경과 스테인레스의 열팽창계수(상기 "표 1"참조)의 차이로 초경의 균열과 깨짐이 발생하는 기술상의 문제점과, 둘째 : 스테인레스로된 기초밴드자체에 풀림현상이 발생하여 스테인레스 고유의 성질이 변하여 기능부분이 약해지므로 내구성이 저하되어 밴드의 구실을 할 수 없게 되는 문제가 따르게 된다.For example, in order to bond cemented carbide and stainless steel strongly, the melting point of the binder should be 800 ~ 900 ℃ or higher. In this case, the material should also be heated to 800 ~ 900 ℃ or higher. Due to the difference between the coefficient of thermal expansion of cemented carbide and stainless steel (see "Table 1" above), the cracking and cracking of cemented carbide are caused by technical problems. Since the functional part is weakened, the durability is reduced, which can not serve as a band to follow.

이와 같은 문제점을 제거 보완하기 위하여 본 발명에 있어서는 두께 0.05∼0.09mm의 스테인레스 박판을 접합용매체로 사용하고, 접합방법도 경납용접(Brazing)과 점용접(Spot welding)을 복합 사용함에 특징을 두고 있는 것으로 아래와같이 제작된다.In order to eliminate and solve the above problems, in the present invention, a stainless steel plate having a thickness of 0.05 to 0.09 mm is used as the bonding medium, and the bonding method is characterized by using a combination of brazing and spot welding. It is produced as follows.

가공공차 0.02mm 이내로 초경(1)을 제작가공하고, 동시에 스테인레스 박판(2)을 두께 0.05∼0.09mm로 절단가공한다.Carbide 1 is manufactured and processed within 0.02 mm of processing tolerance, and the stainless steel plate 2 is cut and processed to 0.05-0.99 mm of thickness simultaneously.

이때 초경(1)과 스테인레스 박판(2)은 열 팽창계수가 서로 다르기 때문에 스테인레스 박판(2)은 경납용접후 냉각이 진행되더라도 초경(1)에 영향을 미치지 않을 정도의 두께로 설정하여야 한다.At this time, since the cemented carbide 1 and the stainless steel sheet 2 have different thermal expansion coefficients, the stainless steel sheet 2 should be set to a thickness that does not affect the cemented carbide 1 even after cooling after brazing welding.

이어서 상기한 초경(1)의 한쪽면(도면에 있어서는 하부임)에 스테인레스 박판(2)을 경납용접하여 일체화로 접합시킨다.Subsequently, the stainless steel plate 2 is brazed and welded to one side (the lower part in the drawing) of the above described cemented carbide 1 and integrally joined.

그 후 상기와 같이 스테인레스 박판(2)이 접합된 초경(1)을 미리 스테인레스재로서 밴드 모양으로 제작되어 있는 기초밴드(3a)측과 접속되도록 맞춘 후 점용접(4)에 의해 접합시키고 이어서 초경(1)을 마무리가공하여 완성된 밴드를 얻는다.Thereafter, the cemented carbide 1, to which the stainless steel sheet 2 is bonded as described above, is fitted in advance to be connected to the side of the base band 3a, which is manufactured in a band shape as a stainless material, and then bonded by spot welding 4, and then cemented Finish (1) to get the finished band.

한편 기초밴드(3a)측에 초경(1)을 접속시켰을 때는 하부로부터 스테인레스 기초밴드(3a), 스테인레스 박판(2) 및 초경(1)으로서 3개층이 되는데 이와 같이 3개층이 된 상태에서 점용접(4)을 행하면 되는데 점용접(4)은 평면상에서 보았을 때 양측끝부 2곳에 행하면 된다(점용접 부분은 제3도에 있어서 "*" 부분참조).On the other hand, when the cemented carbide 1 is connected to the foundation band 3a side, there are three layers of stainless steel foundation band 3a, stainless steel plate 2 and cemented carbide 1 from the bottom. What is necessary is just to perform (4), but the spot welding 4 may be performed in two places of the both ends at the planar view (refer to the "*" part in FIG. 3).

이와 같이 점용접(4)을 하게되면 그 내부층에 위치한 스테인레스 박판(2)이 이미 초경(1)과 접합되어 있고 기초밴드(3a)와는 동일재질이므로 스테인레스 박판(2)이 초경(1)과 기초밴드(3a)간의 접합매체의 역할을 하게된다.In this way, when spot welding (4) is carried out, the stainless steel sheet (2) in the inner layer is already bonded to the cemented carbide (1) and the same material as the base band (3a), so that the stainless steel sheet (2) and It serves as a bonding medium between the base band (3a).

이와 같이 본 발명은 초경(1)과 스테인레스 박판(2)을 미리 완전하게 경납용접에의해 접합하여 기초밴드(3a)에 접합시킬 때 점용접(4)에 의해 순간적이고도 국부적인 가열로 접합되게 함으로써 열팽창계수의 차이에 의한 초경의 균열 및 깨짐의 발생이 없고 동시에 기초밴드(3a) 자체에 풀림 현상이 발생하지 않아 밴드로서의 기능을 확보할 수 있는 것이다.As described above, the present invention allows the cemented carbide 1 and the stainless steel sheet 2 to be completely bonded by brazing in advance and bonded by instantaneous and local heating by spot welding 4 when bonding to the base band 3a. There is no occurrence of cracking and cracking of the cemented carbide due to the difference in the coefficient of thermal expansion, and at the same time, no loosening occurs in the base band 3a itself, thereby ensuring the function as a band.

따라서 스테인레스로된 기초밴드의 외부면에 작은 크기의 초경을 부착시켜서 완성된 밴드를 얻게되므로 저렴한 원가로서 우수한 광택효과를 얻고 동시에 몸체와같이 사용하더라도 종래와 같이 수명의 단축에 따른 교환등의 문제를 최소화 시킬 수 있어 경제성을 갖는 것이다.Therefore, by attaching a small size cemented carbide to the outer surface of the base band made of stainless steel, you can get the finished band, so you can get excellent gloss effect at low cost and at the same time use it as a body. It can be minimized to have economic feasibility.

Claims (2)

정밀가공된 초경(1)의 한쪽면에 스테인레스 박판(2)을 경납용접에 의해 접합시킨후, 상기한 스테인레스 박판(2)이 접합된 초경(1)을 스테인레스재로된 기초밴드(3a)의 상부면에 접속시켜 점용접(4)으로 일체화로 접합한 것을 특징으로 하는 스테인레스와 초경의 복합소재로된 손목시계용 밴드의 제작방법.After joining the stainless steel plate 2 to one side of the precision machined carbide 1 by brazing welding, the cemented carbide 1 to which the stainless steel plate 2 is bonded is bonded to the base band 3a made of stainless steel. A method of manufacturing a wristband for a wristwatch made of a composite material of stainless steel and cemented carbide, characterized in that the upper surface is connected to the upper surface and integrally bonded by spot welding. 제1항에 있어서, 초경(1)은 텅스텐카바이드이고, 스테인레스 박판(2)은 그 두께가 0.05∼0.09mm인 것을 특징으로 하는 스테인레스와 초경의 복합소재로된 손목시계용 밴드의 제작방법.The method of claim 1, wherein the cemented carbide (1) is tungsten carbide, and the stainless steel sheet (2) has a thickness of 0.05 to 0.09 mm.
KR1019940015722A 1994-07-01 1994-07-01 Watch band made of hard-metal and stainless steel KR970003300B1 (en)

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KR970003300B1 true KR970003300B1 (en) 1997-03-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101284750B1 (en) * 2013-05-27 2013-07-17 신보선 Wire-bracelet using heat treatment manufacturing and its method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101284750B1 (en) * 2013-05-27 2013-07-17 신보선 Wire-bracelet using heat treatment manufacturing and its method

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