JPS58155335A - Assessement of gold bullion - Google Patents
Assessement of gold bullionInfo
- Publication number
- JPS58155335A JPS58155335A JP57038952A JP3895282A JPS58155335A JP S58155335 A JPS58155335 A JP S58155335A JP 57038952 A JP57038952 A JP 57038952A JP 3895282 A JP3895282 A JP 3895282A JP S58155335 A JPS58155335 A JP S58155335A
- Authority
- JP
- Japan
- Prior art keywords
- gold
- bullion
- density
- gold bullion
- measurement
- 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
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
Abstract
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.
金地金は高価であり、市場においてはグラム単位で取引
される商品である。したがって、その計量は慎重かつ正
確に行う必要がある。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。Gold bullion is an expensive commodity that is traded in grams on the market. Therefore, the measurement must be carried out 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、全取扱者が刻印や金
色であるか否かを目視し金地金の大気中の１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
る必要が生じてき友。Due to these circumstances, all handlers of gold bullion have conventionally been judged by visually checking whether the metal is engraved or golden, and by measuring the amount of gold bullion in the atmosphere. However, as technology has developed and the market has expanded, it has become necessary to quickly and easily distinguish between real gold and fake gold.
これは金地金へのタングステン埋込み偽金地金や錫や銀
への金めつき偽金地金が容易にえられるため、判定が困
離となるからである。This is because fake gold bullion with tungsten embedded in gold bullion and fake gold bullion with gold plating on tin or silver are easily obtained, making it difficult to judge.
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る金地金判定方法を提供するもので
ある。This invention was made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a method for determining gold bullion that can be determined simply and quickly.
この発明は金を９９チ以上含有する金地金の密＆または
比重と超音波を用い九州定結果を比較して偽金地金を判
別することｔ−特徴とする金地金の判定方法である。This invention is a gold bullion determination method characterized by comparing the density and/or specific gravity of gold bullion containing 99% or more of gold with the Kyushu test results using ultrasonic waves to determine fake gold bullion.
すなわち、この発明は金地金の密度ま友は比重を測定す
ることＫより、超音波淘定の弱点である錫や銀への金め
つき偽金塊を判別することと超音波測定により、密度ま
たは比重測定の弱点である金と同等の密ＦｊＬｔたけ比
重物質で作られ九偽金地金、例えば金地金へのタンゲス
場込み偽金地金を両者の測定結果を比較して偽金地金を
判別し金地金の判定を確実にするものである。In other words, this invention uses ultrasonic measurement to determine the density or specific gravity of gold bullion, rather than measuring its density or specific gravity. The weakness of specific gravity measurement is that fake gold bullion is made of a substance with a specific gravity equivalent to that of gold, such as fake gold bullion that is added to the gold bullion. This is to ensure the judgment of money.
有の伝播速度を持っていること＼、不均質物質の境界で
良く反射する性質に着目し金の純度が９９憾以上あれば
確実な判定ができるからである。This is because gold has a certain propagation speed and is well-reflected at the boundaries of heterogeneous materials, and if the purity of gold is 99 or higher, reliable judgment can be made.
したがりて、密１または比重測定と超音波による測定を
単独で測定した時に起る判定の誤り管防ぐ事ができる。Therefore, it is possible to prevent erroneous judgments that occur when density measurement or specific gravity measurement and ultrasonic measurement are performed independently.
以下実施例について説明する。Examples will be described below.
実施例
金を９９．９９嗟含有する１０００を金板（約１０＋＋
＋ａ厚さ×約５２５ｍ幅×約１１３ ｍ長さ）および同
一形状で同一重量の錫へ金めつき３μの偽金地金。Example 1000 gold plate containing 99.99 hours of gold (approximately 10++
+a thickness x approx. 525m width x approx. 113m length) and 3μ gold-plated fake gold bullion on tin of the same shape and weight.
銀へ金めつ１！３μ偽金地金、金地金へ３ Ｍ ／ Ｘ
６ｕｔのタングステン臘込み偽金地金を製作した。Gold to silver 1!3μ fake gold bullion, gold bullion to 3 M/X
I made a 6 ut tungsten ingot fake gold bullion.
密度は大気中の重量と水中の重量の比較より求め友。超
音波測定は５ＭＨｚ発振の超音波探傷計を用いて計測し
たところ下表の右欄のような結果である。Density is determined by comparing the weight in the atmosphere and the weight in water. The ultrasonic measurement was performed using an ultrasonic flaw detector with 5 MHz oscillation, and the results were as 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＆ＩＣ＠定でき、偽物と本物とｆ、ＷＩｉ実に
区別１判定することに非常に有効であるとともに非ｆｉ
Ｉ壊検査であり測定も非常に簡易である。As detailed above, according to the determination method according to the present invention,
Easy and quick & IC@ can be determined, and it is very effective in determining the difference between fake and genuine f, WIi, and non-fi
This is an I-destruction test and the measurement is very simple.
出願人 田中貴金属工業株式会社Applicant: Tanaka Kikinzoku Kogyo Co., Ltd.
Claims (1)
波を用いた測定結果を比較して判別することを！黴とす
る金地金の判定方法。Comparing the density or specific gravity of a gold bullion containing 99 or more gold with the measurement results using ultrasonic waves! How to determine which gold bullion is moldy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57038952A JPS58155335A (en) | 1982-03-12 | 1982-03-12 | Assessement of gold bullion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57038952A JPS58155335A (en) | 1982-03-12 | 1982-03-12 | Assessement of gold bullion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58155335A true JPS58155335A (en) | 1983-09-16 |
Family
ID=12539530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57038952A Pending JPS58155335A (en) | 1982-03-12 | 1982-03-12 | Assessement of gold bullion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58155335A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674773A (en) * | 2013-12-17 | 2014-03-26 | 苏州市职业大学 | Ultrasonic specific gravity measuring device |
| US20140298911A1 (en) * | 2013-04-05 | 2014-10-09 | George Wyatt Rhodes | Method for detecting the purity of gold bullion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49128795A (en) * | 1973-04-10 | 1974-12-10 | ||
| JPS56158941A (en) * | 1980-05-13 | 1981-12-08 | Nippon Steel Corp | Method and device for measuring content ratio of two kinds of structures in metallic material |
-
1982
- 1982-03-12 JP JP57038952A patent/JPS58155335A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49128795A (en) * | 1973-04-10 | 1974-12-10 | ||
| JPS56158941A (en) * | 1980-05-13 | 1981-12-08 | Nippon Steel Corp | Method and device for measuring content ratio of two kinds of structures in metallic material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140298911A1 (en) * | 2013-04-05 | 2014-10-09 | George Wyatt Rhodes | Method for detecting the purity of gold bullion |
| US9304112B2 (en) * | 2013-04-05 | 2016-04-05 | George Wyatt Rhodes | Method for detecting the purity of gold bullion |
| CN103674773A (en) * | 2013-12-17 | 2014-03-26 | 苏州市职业大学 | Ultrasonic specific gravity measuring device |
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