3 thoughts on “How to distinguish the steel print and laser of Lao Fengxiang Gold”

  1. 1. Different ways of typing printing
    The laser marks are carved with electronic equipment laser machines.
    The steel printing is manually knocked on manually.
    2, different functions.
    The laser printer can set many fonts or icons.
    The steel printing rod can only type the font of one print.
    3, different shapes
    The laser printing is a relatively flat font.
    The shape of the steel print is a bit uneven.
    The expansion information:
    has many appraisal methods for gold jewelry. Chinese folk summarizes a set of simple methods. Its formula is: see color, weight, listening rhyme, folding hardness, stone grinding, contrast cards, use, use, use Sour, fixed into color. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents.
    The color

    The different luster and color of gold can be generally distinguished from pure gold, K gold, real gold, fake gold. That is, gold is better with red yellow, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray and the color is about 50%.
    Therefore, there is a formula for "Seven Qing, Eight Yellow, Nine Five Chi, and Yellow Waves." For jewelry from Jiu Tibet, there will be a saying that "copper turns green, silver turns black, and gold will never change color".
    The density

    The density of gold is 19.32 grams/cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams/cubic centimeter, it is pure gold or more pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry).
    F folding hardness

    gold has the characteristics of ductility and small hardness. It can be pressed into a thin piece with a thickness of 12.7 microns
    When the color is high or nails, it can be left. trace. More than 97%of the gold jewelry, after two or three times, wrinkles appeared, also called fish scales; about 95%of gold jewelry, it feels hard when bending The colorful gold jewelry is very hard when the bending is bent, without fish scales; gold jewelry containing more impurities, two or three times to break; if it is made for raw gold, the curve is broken, and the section has obvious sand granules. When using this method, the width and thickness of the jewelry should be considered. The thick and width should be hardened, and the thin and narrow ones are softer.

  2. Laser can obviously see the depth of the carving evenly, which is very formal. The steel print is knocked up, and the distribution of the font must be a bit different from the depth.

  3. n00:00 / 01: 2170% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease by 10% →: single fast forward 5 seconds ←: single fast retreat 5 seconds Press hold down and hold it down. Here you can drag no longer appear in the player settings to reopen the small window shortcut key description

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