JPS60131517A - Composite blank for spectacle frame - Google Patents

Abstract

PURPOSE:To obtain a composite blank for spectacle frames having high bonding strength and superior brazability by successively cladding Ti or a Ti alloy as a core material with an intermediate layer of an alloy contg. a small amount of Ti and an outer layer of a corrosion-resistant material. CONSTITUTION:Ti or a Ti alloy as a core material 1 is successively clad with an intermediate layer 7 of an alloy contg. 0.5-10wt% Ti such as an Ag-Cu-Ti alloy and an outer layer of a corrosion resistant material 2 such as 18-karat gold to obtain a composite blank 3' for spectacle frames. This blank 3' is rolled, and the resulting plates 4' are brazed to each other at 600-900 deg.C in the air with a brazing filler metal 5 such as Ag-Cu. The concn. of Ti in the core materials 1 and the layers 7 is provided with a gentle gradient, and embrittlement due to the formation of an intermetallic compound is reduced. Thus, a superior composite blank for lightweight durable spectacle frames causing no stripping after brazing, easy to braze and having superior strength is obtd.

Description

【発明の詳細な説明】 本発明は、眼鏡フレーム用複合素材の改良に係り、詳し
くは材料のクラッド接合強度が強（且つろう付性性に優
れた眼鏡フレー・ム用複合素材に関１　する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a composite material for eyeglass frames, and more particularly, to a composite material for eyeglass frames that has strong clad bonding strength (and excellent brazability). .

近時、眼鏡着用者の活動範囲を広げる意味やかけ心地な
どの点からレンズ、フレーム共軽量の眼鏡が要望されて
いる。　□ このような要望に応えようとする眼鏡フレーム用素材と
して、最近Ｔ　ｉ又はＴ　ｉ合金が使用されている。In recent years, there has been a demand for eyeglasses with lightweight lenses and frames, both to expand the range of activities of eyeglass wearers and to provide comfort. □ Ti or Ti alloy has recently been used as a material for eyeglass frames to meet these demands.

しかしＴｉ又はＴｉ合金は、ろう付性が悪く、強い強度
を持たせる為には、高真空中或いは特殊。However, Ti or Ti alloys have poor brazing properties, and in order to have strong strength, they must be used in a high vacuum or in special conditions.

な雰囲気の下でろう付を行う必要があり、之の点での改
善が望まれていた。It is necessary to perform brazing under a warm atmosphere, and improvements in this respect have been desired.

その１つの手段として、第１図に示す如＜　Ｔ　ｉ又は
Ｔｉ合金を芯材工とし、これの外側に耐食性が良く且ガ
ろう付性に優れた材料２、例えばＮｉ−Ｃｒ合金、金合
金、−合□金□などのいずれかがり□　ラッドする方法
が採られそいる。As one means for achieving this, as shown in Fig. 1, Ti or Ti alloy is used as a core material, and a material 2 having good corrosion resistance and brazing properties is applied to the outside of the core material, such as Ni-Cr alloy or gold alloy. , -alloy □metal □, etc. A method of overhanging □ rad is likely to be adopted.

じかしこの方法に依葛と、Ｔｉ又はＴｉ合金の芯１ｌＡ
ｌの酸化或いは鹸化が防げ、大気中で簡便にろう付が行
えるトロ１う長齋があるものの、この眼鏡フレーム用複
合素材３を圧延して、板材４を作り、この板材４ｔ−第
２ｍｉこ示會如＜Ａｇろう、Ａｕ“ろ・５等のろう材５
養石いて゛６０ｄ−〇００℃大気中でろう付すると、芯
材１と外側の材料２との界面に非声＆Ｆ−脆い傘属間些
合物６、−４＜生成されるので、ろう付後任の金属間化
合物６の層から剥離するという致命的な欠点があった。However, depending on this method, the core of Ti or Ti alloy is 1lA.
Although the oxidation or saponification of 1 can be prevented and brazing can be easily performed in the atmosphere, this composite material 3 for eyeglass frames is rolled to make a plate 4, and this plate 4t - 2nd mi is shown. Brazing material 5 such as Ag wax, Au "Ro・5 etc."
When brazing in the atmosphere at ゛60d-〇00℃ with cultivated stone, non-silent &F-brittle intermetallic particles 6,-4< are generated at the interface between the core material 1 and the outer material 2, so brazing This had the fatal drawback of peeling off from the succeeding intermetallic compound 6 layer.

・杏発−は斯かる欠点を解消すべくなされたもので、大
気中でろう付が可能で、しかもろう付怖度が著しく高く
その上芯材と外側の材料とが剥離することのない眼鏡フ
レーム用複合素材を提供セんとするもである。・Kyouhaku was developed to eliminate these drawbacks; it is a pair of glasses that can be brazed in the atmosphere, has a significantly high risk of brazing, and does not allow the core material and outer material to separate. We also provide composite materials for frames.

本発明の眼鏡フレーム用複合素材は、第３図に示す如’
＜Ｔｉ又はＴｉ合金を芯材ｌとし、これの外側に］ｉを
０．５〜１０重量％含有する合金が中間層７としてクラ
ッドされ、この中間層７の外側に耐食性が良く且つろう
付性に優れた材料２、例えばＮｉ−Ｃｒ合金、金合金、
銀合金などのいずれかがクラッドされて成るものである
。The composite material for eyeglass frames of the present invention is as shown in FIG.
<Ti or Ti alloy is used as the core material l, and on the outside thereof] an alloy containing 0.5 to 10% by weight of i is clad as the intermediate layer 7, and the outside of this intermediate layer 7 has a material having good corrosion resistance and brazing properties. 2, such as Ni-Cr alloy, gold alloy,
It is clad with silver alloy or the like.

斯かる構成の眼鏡フレーム用複合素材３′を圧延して板
材４′を作り、この板材４′を第４図に示す如＜Ａｇろ
う、Ａｕろう等のろう材５を用いても６００〜９００℃
大気中でろう、付けすると、芯材１と中間層′７のＴｉ
濃度が緩やかな勾配となり、金属間化合物形成による脆
化が緩和される。従って、ろう付後の剥離が無く、ろう
付強度の高い良好なろう付が得られる。また中間層７に
含まれているＴｉを０．５〜１０重量％とした理由は、
０．５重量％未満では金属間化合物形成による脆化を十
分抑えることができず、１０重量％を超えると加工が困
難となるからである。The composite material 3' for eyeglass frames having such a structure is rolled to form a plate material 4', and this plate material 4' has a melting rate of 600 to 900 even if a brazing material 5 such as Ag wax or Au wax is used as shown in FIG. ℃
When waxed and attached in the atmosphere, the Ti of the core material 1 and the intermediate layer '7
The concentration becomes a gentle gradient, and the embrittlement caused by the formation of intermetallic compounds is alleviated. Therefore, there is no peeling after brazing, and good brazing with high brazing strength can be obtained. Moreover, the reason why the Ti contained in the intermediate layer 7 is set to 0.5 to 10% by weight is as follows.
This is because if it is less than 0.5% by weight, embrittlement due to the formation of intermetallic compounds cannot be sufficiently suppressed, and if it exceeds 10% by weight, processing becomes difficult.

次に本発明の眼鏡フレーム用複合素材の効果を明瞭にす
る為に具体的な実施例と従来例について説明する。Next, specific examples and conventional examples will be described in order to clarify the effects of the composite material for eyeglass frames of the present invention.

〔実施例１〕 第３図に示す如く第２種′Ｉ″ｉを直径３鶴の芯材１と
し、これの外側に厚さ０．０１７鶴のＡｇ　２５ｗｔ％
Ｃｕ　５ｅ＋ｔ％Ｔｉ合金が中間層７としてクラッドさ
れ、この中間層７の外側に厚さ０．２５ｍｍのＮｉ−Ｃ
ｒ　１０％合金合金クラッドされて成る眼鏡フレーム用
複合素材３′を、圧延して０．７５ｍｍ厚の板材４′を
作り、この板材４′を第４図に示す如＜Ａｇ−Ｃｕ　２
Ｂ％のろう材５を用いて８３０℃大気中でろう付してテ
ストピースを得た。[Example 1] As shown in Fig. 3, type 2 'I''i is made into a core material 1 with a diameter of 3 cranes, and 25 wt% of Ag with a thickness of 0.017 inch is placed on the outside of this.
A Cu 5e+t%Ti alloy is clad as an intermediate layer 7, and a 0.25 mm thick Ni-C layer is coated on the outside of this intermediate layer 7.
A composite material 3' for eyeglass frames clad with a 10% alloy alloy is rolled to form a plate material 4' with a thickness of 0.75 mm.
A test piece was obtained by brazing at 830° C. in the atmosphere using B% brazing filler metal 5.

〔実施例２〕 第３回に示す如く第３種Ｔ　ｔ　−３Ｈｔ％Ａｔ−２−
ｔ％−■合金を直径３１１■の芯材１とし、これの外側
に厚さ０．０３ｍのＣｕ　−３２，５ｗｔ％Ｎ　ｉ　−
７，５ｗｔ％Ｔ　ｉ合金が中間層７としてクラッドされ
、この中間層７の外側に厚さ０．２５ｍｍの１８に金合
金２がクラッドされて成る眼鏡フレーム用複合素材３′
を、圧延して０．７５龍厚の板材４′を作り、この板＃
４′を第４図に示す如＜Ａｇ、−Ｃｕ２８％のろう材５
を用いて８３０℃大気中でろう付してテストピースを得
た。[Example 2] As shown in the third article, type 3 T t -3Ht%At-2-
The t%-■ alloy is used as a core material 1 with a diameter of 311cm, and the outer side of this is Cu-32.5wt%Ni- with a thickness of 0.03m.
7.5 wt% Ti alloy is clad as an intermediate layer 7, and a gold alloy 2 having a thickness of 0.25 mm is clad on the outside of the intermediate layer 7, making for a composite material 3' for eyeglass frames.
was rolled to make a plate material 4' with a thickness of 0.75 mm, and this plate #
4′ is shown in FIG.
A test piece was obtained by brazing at 830°C in the atmosphere.

〔従来例〕[Conventional example]

第１図に示す如く第２種Ｔｉを直径３１の芯材１とし、
これの外側に厚さ０．２５ｍｍのＮｉ−Ｃｒ１０％合金
２がクラッドされて成る眼鏡フレーム用複合素材３を、
圧延して０．７５ｍｍ厚の板材４を作り、この板材４を
第２図に示す如＜　Ａ　ｇ　−Ｃｕ　２８％のろう材５
を用いて８３０℃大気中でろう付してテストピースを得
た。As shown in FIG. 1, the second type Ti is used as the core material 1 with a diameter of 31,
A composite material 3 for eyeglass frames is made of a 10% Ni-Cr alloy 2 with a thickness of 0.25 mm clad on the outside of the material.
A plate material 4 having a thickness of 0.75 mm is made by rolling, and this plate material 4 is made of a brazing filler metal 5 of < A g -Cu 28% as shown in Fig. 2.
A test piece was obtained by brazing at 830°C in the atmosphere.

然して実施例１．２＆び従来例のテストピースを引っ張
り試験した処、下表に示すような結果を得た。However, when the test pieces of Examples 1 and 2 and the conventional example were subjected to a tensile test, the results shown in the table below were obtained.

＊試験個数　：　５個 上表で明らかなように実施例１，２のテストピースは従
来例のテストピースに比し、破断強度が著しく高く、接
合強度が高いことが判る。また従来例のテストピースは
芯材１と外側の材料２との接合面が破断面であうた９に
対し実施例のテストピースは母材が破断面で、芯材１と
外側の材料２との接合強度が高いことが判る。*Number of test pieces: 5 As is clear from the table above, the test pieces of Examples 1 and 2 have significantly higher breaking strength and bonding strength than the conventional test pieces. In addition, in the test piece of the conventional example, the joint surface between the core material 1 and the outer material 2 was a fracture surface 9, whereas in the test piece of the example, the base material was a fracture surface, and the joint surface between the core material 1 and the outer material 2 was a fracture surface. It can be seen that the bonding strength is high.

・　以上詳記した通り本発明の眼鏡フレーム用複合素材
は、大気中でろう付が可能でろう付作業性に優れ、しか
もろう付け、強度が著しく高く、その上芯材と外側の材
料とが剥離す、ることが無いので、耐久性１機能性に優
れ、軽量眼鏡フレーム用複合素材としては画期的なもの
と云える。- As detailed above, the composite material for eyeglass frames of the present invention can be brazed in the atmosphere, has excellent brazing workability, and has extremely high brazing strength. Since it does not peel off, it has excellent durability and functionality, making it an innovative composite material for lightweight eyeglass frames.

、　４、図面の簡単な説明　□ 第１図は従来の眼鏡フレーム用複合素材の断面図、第２
図はその複合素材を圧延して得た板材をろう付して得た
テストピースの断面図、第３図は本発明の眼鏡フレーム
用複合素材の断面図、第４図はその複合素材を圧延して
得た板材をろう付して得たテストピースの断面図である
。　。, 4. Brief explanation of the drawings □ Figure 1 is a cross-sectional view of a conventional composite material for eyeglass frames, Figure 2 is a cross-sectional view of a conventional composite material for eyeglass frames.
The figure is a cross-sectional view of a test piece obtained by brazing the plate material obtained by rolling the composite material, Figure 3 is a cross-sectional view of the composite material for eyeglass frames of the present invention, and Figure 4 is a cross-sectional view of the composite material obtained by rolling the composite material. FIG. 3 is a cross-sectional view of a test piece obtained by brazing the plate material obtained in the above manner. .

■−ニ芯材、２−−−−−一外側の材料、３’−−−−
一本発明の眼鏡フレーム用複合素材、４′−−−一板材
、５−一一一−−ろう材、７−−−−・−中間層。■-Two core materials, 2-------One outer material, 3'----
1. Composite material for eyeglass frames of the present invention, 4'--1 plate material, 5--111--brazing material, 7---Intermediate layer.

出願人　田中貴金属工業株式会社 第１−図　第２図 第３図　第４図Applicant Tanaka Kikinzoku Kogyo Co., Ltd. Figure 1-Figure 2 Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] Ｔｉ又はＴｉ合金を芯材とし、Ｔｉを０．５〜１０重量
％含有する合金が中間層としてクラッドされ、外側に耐
食性材料がクラッドされていることを特徴とする［鏡フ
レーム用複合素材。A composite material for a mirror frame, characterized in that the core material is Ti or a Ti alloy, the intermediate layer is clad with an alloy containing 0.5 to 10% by weight of Ti, and the outside is clad with a corrosion-resistant material.