JPS58155334A - Assessment of gold bullion - Google Patents

Assessment of gold bullion

Info

Publication number
JPS58155334A
JPS58155334A JP57038950A JP3895082A JPS58155334A JP S58155334 A JPS58155334 A JP S58155334A JP 57038950 A JP57038950 A JP 57038950A JP 3895082 A JP3895082 A JP 3895082A JP S58155334 A JPS58155334 A JP S58155334A
Authority
JP
Japan
Prior art keywords
gold
density
measuring
bullion
weight
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
JP57038950A
Other languages
Japanese (ja)
Inventor
Nobuyasu Ezawa
江沢　信泰
Norimasa Murakami
村上　憲正
Takeshi Takeuchi
健 竹内
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.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
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 Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP57038950A priority Critical patent/JPS58155334A/en
Publication of JPS58155334A publication Critical patent/JPS58155334A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/202—Constituents thereof
    • G01N33/2028—Metallic constituents

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE:To make certain the assessment of quality for gold bullions by measuring its density by the measurement of weight for a bullion in air and in water and measuring electrically its electric conductivity. CONSTITUTION:1,000 grams of a gold plate (about 10mm. thick, about 5.2cm wide, and about 1.3cm long) with purity over 99.99% and an alloy of gold-platinum- steel with the same weight and a plated lead (plating thickness: about 1mm.) of the same shape are measured for their density and electric conductivity. The density is obtained by measuring the weight of the metal in air and water, and the electric conductivity is measured by attaching an insulated coil through which 5kHz AC current is passed to the metal plate and measuring the counter electromotive force developed by eddy current generated on the plate. With this method the density of a gold bullion can be measured simply and quickly and flase and true gold bullions can be surely separated.

Description

【発明の詳細な説明】 この発明は金地金の判定方法に関するものである。[Detailed description of the invention] This invention relates to a method for determining gold bullion.

金地金Ｆｉ＾価であり、市場においてはグラ五単位で販
引される舖品である。し友がって、その計量は慎重かつ
正＠に行う必要がある。また、金地金は金価格により取
引が変動するので金地金を売買する取扱者は迅速に行う
必要がある。It is a gold bullion Fi^ price, and it is a certain item sold in the market in units of 5 gram. As a friend, it is necessary to measure carefully and accurately. Furthermore, since gold bullion transactions fluctuate depending on the gold price, dealers who buy and sell gold bullion need to do so quickly.

このような事情から従来金地金は、金権扱者が刻印や金
色であるか否かを目視し金地金の大気中のム蓋などｔ−
測定し判定していた。しかしながら技術が発達し市場が
拡大した結果、本物の金地金と偽物とｔｍ易迅速に判定
する必要が生じてき友。Due to these circumstances, gold rights handlers visually inspect gold bullion to see whether it is engraved or gold-colored.
It was measured and judged. However, as technology has developed and the market has expanded, it has become necessary to quickly and easily distinguish between real and fake gold bullion.

これは鉛等Ｋｋｕｆ厚くメッキし丸物ｒ金とほぼ同じ密
度を有する合金が容易にえられる九め判定が困難となる
からである。This is because it is difficult to make a 90% judgment, where it is easy to obtain alloys such as lead that are thickly plated and have approximately the same density as round gold.

この発明は上記欠点に鑑みなされたもので、簡易迅速に
判定することのできゐ金地金判定方法を提供するもので
ある。The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a method for determining whether metal is a metal that can be determined simply and quickly.

この発明は金１−９９参以上含有する金地金の密度また
は比重と電気伝導＆を測定することを脣黴とする金地金
の判定方法である。This invention is a method for determining a gold bullion containing mold by measuring the density or specific gravity and electrical conductivity of a gold bullion containing 1-99 or more gold metals.

すなわち、この発明は空気中での金地金の重量と水中で
のム量ｔ−醐定し密度を測定しかつ電気体つ固有の高い
電気伝導を管有し、それらを兼ねそなえた物は全以外に
＊Ｋ　＜い事に着目し金の純度が９９−以上あれば確実
な判定ができるからである　したがって密１１九は比重
と電気伝導＆を単独で測定した時に起る判定のｍｌを防
ぐ事ができる。That is, this invention measures the weight of gold bullion in the air and the amount of gold in water (t), and has a tube with high electrical conductivity, which is unique to electric bodies. In addition to *K<, if the purity of gold is 99- or higher, a reliable determination can be made. Therefore, density 119 prevents the ml of determination that occurs when specific gravity and electrical conductivity are measured alone. I can do things.

以下実施例についてＩｌ！明する。Regarding the examples below, Il! I will clarify.

実施例 金を９９．９９１以上含有する１０００ｆ金板（約１０
■厚さ×約５．２ａｍ幅Ｘ約１１．３ｃｍ長さ）および
同一重量で同一形状の金−白金−鋼合金と同一形状の鉛
に約１ｍの金メッキをした板の密ｌと電気伝導度ｔ−測
測定た。密度は空気中の重量と水中の重量ｔ＃Ｉ定し求
め、電気伝導度は５ＫＨｚの交概電ｆｉＬを流し九絶縁
されえコイルを板に当てｌｌ１Ｌに発生する渦電流によ
る逆起電力を測定し求めたところ下表の右−のような結
果を得た。Example 1000f gold plate containing 99.991 or more gold (approximately 10
■ Density l and electrical conductivity of a gold-platinum-steel alloy of the same weight and shape (thickness x approx. 5.2 am width x approx. 11.3 cm length) and a plate of about 1 m of gold plated on lead of the same shape. T-measurement was carried out. The density is determined by determining the weight in air and the weight in water t#I, and the electrical conductivity is determined by passing a 5 KHz alternating current fiL and measuring the back electromotive force due to the eddy current generated in 11L by applying an insulated coil to a plate. The results shown on the right side of the table below were obtained.

ずれか一方は金を９９．９９１！以上含有する合板と同
じ結果になったが両方とも同じにはならなかった。Either one gets 99.991 gold! Although the results were the same as those of the plywood containing the above materials, they were not the same.

以上詳述したようにこの発明による判定方法によれば、
簡易迅速に測定でき、偽物と本物とを確実に区別１判定
することに非常に有効である。As detailed above, according to the determination method according to the present invention,
It can be measured simply and quickly, and is very effective in reliably distinguishing between fakes and genuine products.

出願人　　田中貴金属工業株式会社Applicant: Tanaka Kikinzoku Kogyo Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 金を９９嗟以上含有する金地金の密度または比重と電気
伝尋度測定との結果を比較して判別することを特徴とす
る金地金の判定方法。A method for determining a gold bullion, which comprises comparing the density or specific gravity of a gold bullion containing 99 mos or more of gold with the results of electrical conductivity measurement.
JP57038950A 1982-03-12 1982-03-12 Assessment of gold bullion Pending JPS58155334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57038950A JPS58155334A (en) 1982-03-12 1982-03-12 Assessment of gold bullion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57038950A JPS58155334A (en) 1982-03-12 1982-03-12 Assessment of gold bullion

Publications (1)

Publication Number Publication Date
JPS58155334A true JPS58155334A (en) 1983-09-16

Family

ID=12539478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57038950A Pending JPS58155334A (en) 1982-03-12 1982-03-12 Assessment of gold bullion

Country Status (1)

Country Link
JP (1) JPS58155334A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128795A (en) * 1973-04-10 1974-12-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128795A (en) * 1973-04-10 1974-12-10

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