MXPA98004285A - Measurement of the proportion of gold in gold mold - Google Patents
Measurement of the proportion of gold in gold moldInfo
- Publication number
- MXPA98004285A MXPA98004285A MXPA/A/1998/004285A MX9804285A MXPA98004285A MX PA98004285 A MXPA98004285 A MX PA98004285A MX 9804285 A MX9804285 A MX 9804285A MX PA98004285 A MXPA98004285 A MX PA98004285A
- Authority
- MX
- Mexico
- Prior art keywords
- gold
- standard
- proportion
- specific weight
- measured
- Prior art date
Links
- 239000010931 gold Substances 0.000 title claims abstract description 72
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 60
- 238000005259 measurement Methods 0.000 title claims description 18
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000001066 destructive Effects 0.000 claims abstract 5
- 238000000465 moulding Methods 0.000 claims description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 5
- 230000037396 body weight Effects 0.000 claims description 4
- 230000036633 rest Effects 0.000 claims description 2
- 238000007655 standard test method Methods 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 1
- 238000007654 immersion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002965 rope Substances 0.000 description 2
- 241001354491 Lasthenia californica Species 0.000 description 1
- QUCZBHXJAUTYHE-UHFFFAOYSA-N [Au].[Au] Chemical compound [Au].[Au] QUCZBHXJAUTYHE-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000003111 delayed Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Abstract
The present invention relates to a non-destructive method for measuring the ratio of gold to carats or the proportion of other components in a molded material. The invention also relates to a method for determining a specific weight of a molded body (6) including repeated flooding of the body (6) in a tank (3), with baskets (5) and liquid (
Description
MEASUREMENT OF THE PROPORTION OF GOLD IN MOLDED GOLD
Field of the Invention The present invention relates generally to the exact measurement, without destruction, of metal components. More specifically, the present invention relates to a method for measuring the proportion of gold in molded gold, or the proportion of another component in a cast material.
Background of the Invention The proportion of gold in molded gold is measured in "carats." The carat is the weight provided by one-twentieth of the given body weight, such as the proportion of pure gold compared to alloys. Pure gold has a proportion of 24 carats, that is, one hundred percent gold. Jewelery shops and manufacturers carry out the molding of gold with various alloys. The molding is performed in permanent alloy proportions for gold and in different types of alloys. The "types" of gold are separated from each other according to the type and / or quantity of alloys in the molding. The molding always causes a change in the proportion of the gold found in the molding. Therefore it is necessary to measure the proportion of gold in the molding made, in carats. The molding executor requires the measurement of the proportion of gold that will be received after molding.
Currently, the way that is known and in which jewelry manufacturers measure the proportion of gold in gold molded in the jewelry they produce, consists of taking a sample of each molding made in the workshop to an aquilator, who performs a test of the proportion of gold in the sample to break and separate the various components of the sample for the purpose of calculating the proportion of gold within the sample. This process is expensive, problematic, delayed and can not always be carried out in the jeweler's premises. The present invention provides a possible immediate test, at the production site.
OBJECTIVES OF THE INVENTION The present invention consists in a method for determining, without destruction, the proportion of gold in molded gold, or the proportion of material in the molding of another molding, and in a device that performs the measurement using this method.
One of the steps in the method according to the present invention consists in the measurement of the specific weight of the molding through the liquid immersion method, however, in a special form. In the accepted form of this method, the body being measured is first weighed in the air and after that it is weighed submerged in liquid when the specific weight of the liquid is known. From the difference between the weights, the specific weight is calculated, which is: the weight of the body divided by the decrease in the weight of the body after the immersion in liquid multiplied by the specific weight of the liquid.
Since the bodies referred to here are, in principle, very small, basically jewelry, inaccuracies in the measurement are caused by problems of surface tension between the liquid and the body and, mainly, by the creation of fixed air bubbles to the body measured at the time it is immersed in the liquid, the method of the present invention consists of the method of "repeated flooding" and that is used to improve the precision of the measurement of the specific weight of the molded body. For the purpose of reducing air bubbles and the good bond between the liquid and the body, the body is not simply immersed in the liquid. Rather, the body is placed in a tank and flooded with liquid.
After this, the tank is emptied and flooded again. After a number of repetitions of this process, the measured body remains submerged in the liquid, without air bubbles and without the spaces created by surface tension problems. This is, the "Repeated Flood," instead of simple immersion. The mathematical equation is identical in the two methods.
The invention is described by Figures 1 and 2. These figures are not intended in any way to limit the scope of the invention and only attempt to clarify the description. . Brief Description of the Drawings Figure 1 describes an exemplary structure of molded gold with porosity traps, which is used in the method, and Figure 2 describes the device for measuring the proportion of gold using the method of the present invention. .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The method for measuring the level of gold proportion in molded gold, or the proportion of molded material of a body in another molding, in accordance with the present invention, is composed of the following steps, when the stage
"A" through "D" are performed in a simultaneous manner for each type of gold, and stages "E" and "F" are performed for each test of the new body tested.
a) Mold "standard" reference samples for each type of gold, according to the following stages:
a1) Constructing a molding structure with or without a porosity trap, a structure for molding with centrifugation as described in Figure 1, including the inlet pipe (1), a space for catching porosity (2) and a space cylindrical (3) to be filled with molding material;
a2) Empty gold inside the molding structure and inside the cylindrical space of the structure (3) and the cylinder receives the drained gold;
a3) The cylinder represents a "standard" for the measurement;
b) Measurement of the proportion data, in carats, of the standard and according to the following stages:
b1) Test a part of the same molding by the test method, well known as the gold standard test method;
b2) The data of the proportion of the standard are received. These data are the gold ratio of the carat standard (CT);
c) Measurement of the specific weight of the standard through the following stages:
c1) First determination of the weight of the standard when it is in the air;
c2) Second determination of the weight of the standard when submerged in liquid, using the method of "Repeated Flooding";
c3) Calculate the specific weight of the standard by means of the equation A * D0 Dm = where Dm is the specific weight required of the standard, D0 is the specific weight of the liquid, according to its temperature during the test, which floods the standard, A is the body weight measured (the standard) in air, P is the difference between the first weight in the air and the second weight in liquid;
d) Calculate the specific weights of the alloy in the standard using either the specification of the alloy or conform to the equation:
Au * Dm * (1-CTm) L = Au - CTm. D m
when L is the specific weight of the alloy, Au is the specific weight of the pure gold. Dm is the specific weight of the "standard," CTm is the proportion of gold in the carat standard, as determined by the test of the aquilator;
e) Measurement of the specific weight of the body measured, the body whose proportion of gold is required to be measured, in the same way through which the specific weight of the standard was measured;
f) Calculation of the proportion of gold in the body measured using standard information of the same type of gold and the equation
Au * (1 - L / Ds) CTS = Au - L
when CTS is the proportion of body gold measured in carats, Au is the specific weight of pure gold, L is the specific weight of the alloy in the standard of the same type of gold as that of the body measured, and Ds is the specific weight of the body. body measured.
The molding, which leaves the spherical space (No. 2 in Figure 1) is used to measure the porosity by the same method in the present invention.
The present invention also includes a device that measures the proportion of gold gold molded into a molded body by the measurement method of the present invention.
The device for measuring the gold proportion of molded gold is composed of a scale, a weighing hook, to which a small basket is attached by means of ropes, an upper tank, a lower tank, a pump, a surfactant and a computer program.
Figure 2 describes the device that includes a microprocessor that stores the information of the various measurements made and which uses each measurement in coordination with the appropriate "standard" and performs the calculations according to the method heretofore described. The device also includes a balance (1) to determine the weight and a hook (2) on which it is connected is installed., by means of ropes (4), two small baskets (5), within which the tested body rests (6). The small upper basket is for the first determined weight in the air. The small lower basket, together with the measured body, are submerged in the upper tank (3), and in this situation the first weight measurement is made. The pump (8) floods the body measured in liquid (7), which moves from the lower tank (9) to the upper tank (3). The pump empties the upper tank and floods again a number of times and only then the second weight is determined. The microcontroller with computer programs, keyboard and monitor (11), by means of equations and calculations of the proportion of the appropriate standard and information of the body weight measured, determines in carats the proportion of gold in the body measured and presents it in the monitor in conjunction with the deviation of the gold ratio of the standard. In the event, weight is required to balance the hook (2), the hook includes a place to add balance weights (10).
The method and device in the present invention perform measurements of the gold proportion of molded gold or other molded body, without destruction and in a more accurate manner.
VJ
fifteen
twenty
Claims (5)
- Novelty of the Invention 1. A non-destructive method to measure the proportion of gold in carats or the proportion of other components in molded material, which comprises the following steps: a) Mold "standard" reference samples for each type of gold, comprising: a1) Constructing a molding structure with or without a porosity trap; a2) Emptying gold of a specified type into the casting structure and molding represents a standard; b) Determine the carat ratio data of the standard, comprising: b1) Test a part of said standard molding using the gold standard test method; b2) Receive the data of the proportion of the tested standard, these data are the gold ratio of the carat standard (CT); c) Measure the specific weight of the standard, including: d) Determine the weight of the standard when it is in the air; c2) Determine the weight of the standard by means of a second determination of the weight when it is immersed in the liquid, using the method of "Repeated Flooding"; c3) Calculate the specific weight of the standard; d) Calculate the specific weights of the alloy in the standard using either the specification of the alloy or according to the equation: Au * Dm * (1-CTm) L = Au - CTm * D m when L is the specific weight of the alloy, Au is the specific weight of pure gold. Dm is the specific weight of the "standard," CTm is the ratio of gold in the carat standard; e) Measure the specific weight of the body measured, by means of the specific weight of the standard; f) Calculate the proportion of gold in the body measured using the standard information of the same type of gold as that of the body measured, and the equation Au * (1 - L / D.) CTS = Au - L when CTS is the proportion gold body measured in carats, Au is the specific weight of pure gold, L is the specific weight of the alloy in the standard of the same type of gold as the body measured and Ds is the specific weight of the body measured.
- 2. A device for the non-destructive measurement of the gold-molded gold ratio or the proportion of a material in a molded body using the method claimed in clause 1, comprising a microprocessor for calculating and storing; first means for weighing in the air the body measured and molded; second means for weighing in liquid the body measured and molded; Tensoactive liquid and a pump that repeatedly floods the body measured with liquid in a lower tank.
- 3. A device for the non-destructive measurement of the proportion of gold in molded gold or the proportion of a material in a molded body, according to claim 2, further comprising a balance for weighing the measured body and a hook to which a body is attached. small basket by means of strings, inside which rests the measured body.
- 4. A method for determining a specific weight of a molded body, which comprises: a) Weighing the measured body, in the air and hanging inside the tank; b) Flooding the body in liquid surfactant so that its specific weight is known when filling the tank; c) Remove the liquid from the tank and repeat the flood a number of times; d) weigh the measured body when it is flooded in the liquid; e) Calculate the specific weight of the body according to the following equation: Dm = P when D is the specific weight required, D0 is the specific weight of the liquid, which floods the standard, A is the body weight measured, in the air, P is the difference between the first weight in the air and the second weight in liquid;
- 5. A non-destructive method for measuring the ratio of gold in carats or the proportion of another component in a molded material, as claimed in clause 1, wherein the molding structure described in step (a1) is without a porosity trap .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL116138 | 1995-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MXPA98004285A true MXPA98004285A (en) | 2000-07-01 |
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