JPS58155342A - Assessment of gold bullion - Google Patents

Assessment of gold bullion

Info

Publication number
JPS58155342A
JPS58155342A JP3895382A JP3895382A JPS58155342A JP S58155342 A JPS58155342 A JP S58155342A JP 3895382 A JP3895382 A JP 3895382A JP 3895382 A JP3895382 A JP 3895382A JP S58155342 A JPS58155342 A JP S58155342A
Authority
JP
Japan
Prior art keywords
gold
gold bullion
bullion
density
cut surfaces
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
JP3895382A
Other languages
Japanese (ja)
Inventor
Takeshi Takeuchi
健 竹内
Norimasa Murakami
村上　憲正
Nobuyasu Ezawa
江沢　信泰
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 Precious Metal Technologies Co Ltd
Original Assignee
Tanaka Kikinzoku Kogyo KK
Tanaka Precious Metal Technologies 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 Tanaka Kikinzoku Kogyo KK, Tanaka Precious Metal Technologies Co Ltd filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP3895382A priority Critical patent/JPS58155342A/en
Publication of JPS58155342A publication Critical patent/JPS58155342A/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
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To reliably distinguish a false gold bullion from a true gold bullion, by measuring the buoyance of a gold bullion in a liquid or gas to measure the volume thereof, in addition to the weight thereof in the air, and cutting the ingot of the gold bullion substantially diagonally at one or more parts to visually observe the cut surfaces. CONSTITUTION:A gold bullion having a gold content not smaller than 99% is cut at one or more parts to observe the cut surfaces, and a discrimination is effected by making a comparison between the results of measurement of density or specific gravity. Thus, it is possible to prevent errors in judgement which may be produced when the measurement of density or specific gravity and the observation of one or more cut surfaces are carried out independently of each other.

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.

金地金は高価であシ、市場においてはグラ五単位で取引
される商品である。したがって、その計１ｌＦｉ慎重か
つ正確に行う必要がある。’ｔｆｃ、金地金は金価格に
よシ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。Gold bullion is an expensive commodity that is traded in units of 5 gram in the market. Therefore, it is necessary to perform the total 1lFi carefully and accurately. 'TFC, gold bullion transactions fluctuate depending on the gold price, so traders 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、金取扱着が刻印や金
色であるか否かを目視し金地金の大気中の重量などを測
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を簡易迅速に判定す
る必要が生じてきた。Under these circumstances, gold bullion has conventionally been determined by visually observing whether the gold handling clothing is engraved or gold-colored, and by measuring the weight of the gold bullion in the atmosphere. However, as technology has developed and the market has expanded, it has become necessary to easily and quickly distinguish between genuine gold bullion and fake gold bullion.

これは鉛に金めっきした偽金地金や金地金にタングステ
ンを埋設した偽金地金またＡｕ−Ａｇ３重量−金色合金
などが容易にえられるため判定が困難となるからである
。This is because false gold ingots made of lead plated with gold, fake gold ingots in which tungsten is embedded in gold ingots, and Au-Ag3 weight-gold alloys are easily obtained, making it difficult to judge.

この発明は上記欠点に鑑みなされた龜ので、簡易迅速に
判定することのできる金地金判定方法を提供するもので
ある。The present invention has been developed in view of the above-mentioned drawbacks, and thus provides a method for determining gold bullion that can be determined simply and quickly.

この発明は金を９９−以上含有する金地金を１回以上切
断し切断面を観察することと密ｔｔたは比１の画定結果
を比較して判別するととｔ−特徴とする金地金の判定方
法である。This invention is characterized by cutting a gold bullion containing 99 or more gold, observing the cut surface, and comparing the results of definition of density tt or ratio 1. It's a method.

すなわち、この発明はまず、空気中の重量に併せて、液
体や気体中の浮力測定を行い金地金の体積ｔ−測測定次
にその金地金の塊をは１丁対角線状に一回以上複数回、
切断しその断面を目視観察し、金地金のも定を確実にす
るものである。That is, this invention first measures the buoyancy in a liquid or gas in addition to the weight in the air, measures the volume of the gold bullion, and then measures the gold bullion one or more times diagonally. times,
It is used to ensure the quality of the gold bullion by cutting it and visually observing its cross section.

これは、金の比重ないし密度が１　（１３（ｔ／ｃｄ）
と他の安価な金属に比し著しく高いことと、併せて純な
る金が、比較的軟らかく且つ全特有の黄金色１有するこ
とに着目し金の純度が９９１以上あれば確実な判定がで
きるからである。This means that the specific gravity or density of gold is 1 (13 (t/cd)
Focusing on the fact that it is significantly higher than other cheap metals, and that pure gold is relatively soft and has a unique golden color, it is possible to make a reliable judgment if the purity of gold is 991 or higher. It is.

したがって、密度または比重の測定と１回以上の切断観
察を単独で実施した時起る判定の誤）を防ぐ事ができる
。以下に実施例について説明する。Therefore, it is possible to prevent erroneous judgments that occur when density or specific gravity measurement and one or more cutting observations are carried out independently. Examples will be described below.

実施例 、％ 金を９９．９Ｖ以上含有する１、００Ｑｆ金板（約１０
ジ厚さ×約５２．．幅×約１１３ｗ長さ）および同一電
量で同一形状の鉛に金めつき２声した偽金地金９９．９
９係の金、地金に３　／　Ｘ　２　（ｌ　ＬのＷ丸棒を
鳳込んだ偽金地金セしてＡｕ−Ａｇ３重量参合金で金色
を呈した偽金地金をそれぞれ作り、それらについて比重
ないし密度を測定することと、簡易な切断機を用いその
断面を目視観察することを試み九ところ下表の右欄のよ
うな結果を得た。Example,% 1,00Qf gold plate containing 99.9V or more gold (approximately 10
Di thickness x approx. 52. ．． Fake gold bullion 99.9 with gold plating on lead of the same shape with the same electric power (width x approximately 113W length) and 2 voices.
For the gold in section 9, set the fake gold bullion with 3 / After nine attempts to measure the density and visually observe the cross section using a simple cutting machine, we obtained the results shown in the right column of the table below.

以上詳述したようＫ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、４４
Ｊ定することに非常に有効であり、且つ比較的（資）便
な装置ですみ操作も容易である。As detailed above, according to the determination method according to the present invention,
Easy and quick measurement, reliably distinguishing between fakes and genuine products, 44
It is very effective in determining J, and requires a relatively inexpensive device and is easy to operate.

出願人　　田中貴金属工業株式金社Applicant: Tanaka Kikinzoku Kogyo Co., Ltd. Kinsha

Claims (1)

【特許請求の範囲】[Claims] 金を９９−以上含有する金地金をＩｇＡ以上切断するこ
とと密度又は比重の測定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: cutting a gold bullion containing 99 or more gold to IgA or higher, and comparing the density or specific gravity measurement results.
JP3895382A 1982-03-12 1982-03-12 Assessment of gold bullion Pending JPS58155342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3895382A JPS58155342A (en) 1982-03-12 1982-03-12 Assessment of gold bullion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3895382A JPS58155342A (en) 1982-03-12 1982-03-12 Assessment of gold bullion

Publications (1)

Publication Number Publication Date
JPS58155342A true JPS58155342A (en) 1983-09-16

Family

ID=12539558

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3895382A Pending JPS58155342A (en) 1982-03-12 1982-03-12 Assessment of gold bullion

Country Status (1)

Country Link
JP (1) JPS58155342A (en)

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