JPH035074A - Method of brazing gold alloy rear cap of wrist watch - Google Patents

Method of brazing gold alloy rear cap of wrist watch

Info

Publication number
JPH035074A
JPH035074A JP13801989A JP13801989A JPH035074A JP H035074 A JPH035074 A JP H035074A JP 13801989 A JP13801989 A JP 13801989A JP 13801989 A JP13801989 A JP 13801989A JP H035074 A JPH035074 A JP H035074A
Authority
JP
Japan
Prior art keywords
brazing
core
gold alloy
rear cap
alloy rear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13801989A
Other languages
Japanese (ja)
Inventor
Hachiro Kushida
串田 八郎
Kenichi Mori
健一 森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAMA SEIMITSU KK
Citizen Watch Co Ltd
Original Assignee
TAMA SEIMITSU KK
Citizen Watch Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TAMA SEIMITSU KK, Citizen Watch Co Ltd filed Critical TAMA SEIMITSU KK
Priority to JP13801989A priority Critical patent/JPH035074A/en
Publication of JPH035074A publication Critical patent/JPH035074A/en
Pending legal-status Critical Current

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  • Electroplating Methods And Accessories (AREA)

Abstract

PURPOSE:To provide the brazing method having excellent solder flowability and joint strength by forming a metal plating layer of Cu, etc., to the brazing part of a gold alloy rear cap body and joining a core thereto by an Au or Ag brazing filler metal. CONSTITUTION:The gold alloy rear cap body 4 for wrist watches and the core 2 made of German silver or stainless steel are brazed. The metal plating layer 3 of one among Cu, Ni and Pd-Ni is, thereupon, formed to the brazing part of the gold alloy rear cap body 4. The core 2 is joined by the Au or Ag brazing filler metal 1. The industrially inexpensive mass production of the exterior parts of the solid gold wrist watches is possible in this way.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、腕時計用金合金ウラブタと、洋白製中子ある
いはステンレススチール製中子との口付方法に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of attaching a gold alloy back cover for a wristwatch to a nickel silver core or a stainless steel core.

〔従来の技術〕[Conventional technology]

一般に金合金である1 8 K合金又は14 K合金と
他材質のロー付接合手段としては、接合すべき部利を仮
スポント溶接した上で接合部にAuあるいはAgをベー
スにしたロー材をセットし、無酸化雰囲気炉中で700
°C〜850℃で加熱しロー材するか、あるいは、細い
トーチ炎を用いて大気中で手作業で行うために、フラッ
クスを用いて細い線径のロー材を手送りしながら接合す
るのが常である。
In general, brazing joining of 18K alloy or 14K alloy, which is a gold alloy, with other materials involves temporary spont welding of the parts to be joined, and then setting a brazing material based on Au or Ag on the joint part. 700 min in a non-oxidizing atmosphere furnace.
It is possible to heat the soldering material at a temperature between °C and 850°C, or to join it by hand in the air using a thin torch flame, using flux and hand-feeding the soldering material with a thin wire diameter. Always.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、トーチロー材の場合は、ロー材する部品
が著しく酸化したり、また高度の技能を有するために、
工業的に生産することが難しかったり、外観品質を著し
く害する問題があった。
However, in the case of torch-rolled materials, the parts to be soldered are severely oxidized and require a high level of skill.
There are problems in that it is difficult to produce industrially and that it significantly impairs the appearance quality.

力無酸化雰囲気中での炉中ロー材は、たとえば洋白に対
しては著しく良好なロー流れ性を呈するが、18に合金
上や14に合金上にはロー材の流れが著しく悪いために
、金ムク防水時計の如きウラブタ部に気密性な必要とし
たりするものに対しては歩留が悪く不適性であった。
For example, the brazing material in a furnace in a non-oxidizing atmosphere exhibits extremely good flowability on nickel silver, but the flowability of the brazing material on alloys 18 and 14 is extremely poor. However, the yield rate was low and it was unsuitable for products such as gold waterproof watches that require an airtight bottom part.

本発明の目的は、上述した欠点を改良することによって
、外観品質を維持し、なおかつ腕時計外装の機能を十分
満足し、工業的に安価に、特別な技能を有することなし
に、腕時計用金合金ウラフタのロー付方法を提供せんと
するものである。
The object of the present invention is to improve the above-mentioned drawbacks, maintain the appearance quality, fully satisfy the function of the wristwatch exterior, and produce a gold alloy for wristwatches industrially at low cost and without special skills. It is an object of the present invention to provide a method for brazing lining.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の構成は、腕時計用金合金ウラブタ本体と、洋白
製中子あるいはステンレススチール製中子とのロー付方
法において、前記金合金ウラブタ本体のロー付部に、C
u 、 N i 、 P d −N iの中の1つの金
属メッキ層を形成し、ALIロー材あるいはAgロー材
で前記中子を接合したものである。
The structure of the present invention is that in the method of brazing a gold alloy back cover main body for a wristwatch with a nickel silver core or a stainless steel core, C.
A metal plating layer of one of u, Ni, and Pd-Ni is formed, and the core is bonded with ALI brazing material or Ag brazing material.

〔実施例〕〔Example〕

以下、本発明の実施例を図面により、詳細に説明する。 Embodiments of the present invention will be described in detail below with reference to the drawings.

第1図は金合金裏蓋の要部断面図で、表1に示す組成の
金合金である1 4 K合金製のウラブタ本体4又は1
8に合金製のウラブタ本体4と、JIS、C−7060
に相半する洋白中子2部品を通常の製造法によって作り
、ウラブタ本体4の中子2がロー材げされる部分にCL
Iメッキ2μm又はNiメッキ2μm又はNi −p 
dメッキ1μmを施し、メッキ層6を形成した、。
Figure 1 is a cross-sectional view of the main parts of the gold alloy back cover, showing the back cover body 4 or 1 made of 14K alloy, which is a gold alloy with the composition shown in Table 1.
8 is an alloy lining body 4 and JIS, C-7060
Two parts of the nickel silver core that are compatible with each other are made using the normal manufacturing method, and a CL is placed on the part where the core 2 of the lining body 4 is to be brazed.
I plating 2μm or Ni plating 2μm or Ni-p
d plating was applied to 1 μm to form a plating layer 6.

表1 ウラブタ本体及び中子の組成 比較のために18 K合金製のウラブタ本体4のロー付
部にメッキ層6が形成されてないものも準備した。
Table 1 In order to compare the compositions of the bottom pad body and the core, a bottom pad body 4 made of 18K alloy without the plating layer 6 formed on the brazed portion was also prepared.

次にウラブタ本体4と中子2はスポット溶接機にて溶接
され仮固定した。
Next, the back cover main body 4 and the core 2 were welded using a spot welding machine and temporarily fixed.

この後に、J I S 、 BAg−80,7φX 7
 m/mの線材のロー材1を中子2とウラブタ本体4の
境界部に仮スボント溶接を行い、アンモニア分解ガス雰
囲気の連続炉中にてロー材を行った。この時の温度は7
90℃にセントした。表2はこの結果を表わしたもので
ある。この実施例の結果から明らかの如く、Cuメッキ
2μm、、Niメッキ2μm、N i −p dメッキ
1μmを14 K合金製及び18に合金製のウラブタ本
体4に施したものは、口の流動性は著しく秀れ、全周に
亘って、中子2とウラブタ本体4の境界部に流れており
ロー付強度および気密性も申し分ない状態にあった。一
方比較として行ったメッキ層6なしのものは、ロー材1
の流動性は悪く、わずか円周方向にl Q m / +
η程度しか流れてなく、ウラブタ本体4と中子2のロー
付強度は悪(、はがれが発生し、気密性も全く保たれて
なかった。この結果を下記の表2に示また、ロー付部に
メッキ層6が形成されたウラブタ本体4にステンレスス
チール製の中子2をAllロー又はAgローを使用して
接合できることは言うまでもない。
After this, JIS, BAg-80, 7φX 7
Temporary spont welding was performed on the brazing material 1 made of a wire of m/m at the boundary between the core 2 and the backing main body 4, and the brazing material was brazed in a continuous furnace in an ammonia decomposition gas atmosphere. The temperature at this time is 7
The temperature was set at 90°C. Table 2 shows the results. As is clear from the results of this example, the case where Cu plating of 2 μm, Ni plating of 2 μm, and Ni-pd plating of 1 μm were applied to the 14K alloy and 18K alloy lining body 4 improved the fluidity of the mouth. The brazing strength and airtightness were excellent, and flowed all the way around the boundary between the core 2 and the back cover body 4, and the brazing strength and airtightness were also satisfactory. On the other hand, for comparison, the one without plating layer 6 is the brazing material 1.
The fluidity of the is poor, and there is only a small amount of l Q m / + in the circumferential direction.
The flow was only about η, and the brazing strength between the bottom body 4 and the core 2 was poor (peeling occurred, and the airtightness was not maintained at all. The results are shown in Table 2 below. It goes without saying that the stainless steel core 2 can be bonded to the bottom main body 4 on which the plating layer 6 is formed by using All brazing or Ag brazing.

尚、メッキ層6の膜厚は、ロー材1の流動性、メッキ層
6形成の量産性、経済性等から本実施例のものが最適で
ある。
The thickness of the plating layer 6 in this embodiment is optimal in view of the fluidity of the brazing material 1, the mass productivity and economic efficiency of forming the plating layer 6.

また、ウラブタ本体4のロー付部に形成したメッキ層乙
のかわりに、Cu、Ni、Ni−Pdの中の1つの極薄
金属のクラッド層を設けても上記実施例と同様の効果が
得られる。
Furthermore, the same effect as in the above embodiment can be obtained by providing an ultra-thin metal cladding layer of one of Cu, Ni, and Ni-Pd in place of the plating layer B formed on the brazed portion of the bottom main body 4. It will be done.

〔発明の効果〕〔Effect of the invention〕

以上の説明で明らかなよ5に、本発明のロー付方法によ
れば、ロー流動性と接合強度が著しくすぐれており、特
に技能的な要素をとり入れることなく、美観と精密さを
要求される金ムク腕時計外装に対して、工業的に安価に
、多量に生産することが出来る。
As is clear from the above explanation, the brazing method of the present invention has extremely excellent low fluidity and bonding strength, and does not require any special technical elements to achieve aesthetics and precision. It can be industrially produced in large quantities at low cost compared to gold-plated wristwatch exteriors.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例で、金合金ウラブタの要部断面
図である。 1・・・・・・ロー材、 2・・・・・・中子、 6・・・・・・メッキ層、 4・・・・・・ウラブタ本体。 4−?7ラフ“夕Aiト
FIG. 1 is an embodiment of the present invention, which is a sectional view of a main part of a gold alloy lining. 1... Raw material, 2... Core, 6... Plating layer, 4... Urabuta main body. 4-? 7 Rough “Evening Aito”

Claims (1)

【特許請求の範囲】[Claims] 腕時計用金合金ウラブタ本体と、洋白製中子あるいはス
テンレススチール製中子とのロー付方法において、前記
金合金ウラブタ本体のロー付部に、Cu、Ni、Pd−
Niの中の1つの金属メッキ層を形成し、Auロー材あ
るいはAgロー材で前記中子を接合したことを特徴とす
る腕時計用金合金ウラブタのロー付方法。
In a method of brazing a gold alloy back button body for a wristwatch with a nickel silver core or a stainless steel core, Cu, Ni, Pd-
A method for brazing a gold alloy back plate for a wristwatch, characterized in that one metal plating layer of Ni is formed, and the core is joined with an Au brazing material or an Ag brazing material.
JP13801989A 1989-05-31 1989-05-31 Method of brazing gold alloy rear cap of wrist watch Pending JPH035074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13801989A JPH035074A (en) 1989-05-31 1989-05-31 Method of brazing gold alloy rear cap of wrist watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13801989A JPH035074A (en) 1989-05-31 1989-05-31 Method of brazing gold alloy rear cap of wrist watch

Publications (1)

Publication Number Publication Date
JPH035074A true JPH035074A (en) 1991-01-10

Family

ID=15212156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13801989A Pending JPH035074A (en) 1989-05-31 1989-05-31 Method of brazing gold alloy rear cap of wrist watch

Country Status (1)

Country Link
JP (1) JPH035074A (en)

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