Artificial imitation is the key technology of antique jade, which was applied in the Northern Song Dynasty along with the appearance of antique jade. In the Ming and Qing Dynasties, the methods of artificial imitation were perfect, and the forms were diverse and extremely difficult to identify.

Some gold and stone archaeologists in the Qing Dynasty have a lot of records on the ancient jade imitation. In Liu Xinyao's "Wang Ji Bu", the following methods of jade dyeing are recorded: the color of the chicken is whitened by the barbecue to fill the ancient chicken bone white jade, and the surface has a hot crack compared with the real ancient jade. Cut in the leg of the lamb, implant a small piece of jade, stitch it with a thread, and take it out after a few years. The surface of the jade will form a blood-colored filament like the red silk on the old jade. It is commonly known as "Yangyu".

Compared with the true ancient jade, the "Yangyu" is slightly dry.

The jade is placed in the belly of a dog that has just been killed and blood stasis has not yet solidified. After a few years in the ground, the surface of the jade will produce soil and blood spots, commonly known as "dog jade." The jade surface often retains the color of the new jade.

The jade that is soft in texture is boiled with ebony, and then colored by the oil extraction method, commonly known as "Meiyu". This antique twilight generally appears to be unnatural.

Put the jade into the thick gray water and ebony water, and heat it in the wind and snow to form a crack like a hairline to fill the cow hair in the ancient jade, commonly known as "wind jade".

The jade and the iron filings are mixed together, then quenched with hot vinegar, and placed in the ground for ten days. After several months of removal, the surface will be etched with orange peel, and the pattern is mixed with upper and deep red. Rust. Commonly known as "叩玉".

It is colored by the method of “lifting oil”. The color permeates the jade muscles and it does not retreat for a long time. This kind of ochre color is fresher when it is cloudy, and it is slightly turbid when it is fine. In addition, some methods of soaking in frying, roasting, cigar water, and burying in pots, silt, and toilets can make the jade lose its true color, so I won't go into details here.

Grinding Stone

Industrial applications editor broadcast

Whetstone sintered corundum (ruby) : A kind of microcrystalline corundum product sintered at high temperature. It has a compact and delicate structure and high hardness and strength.

The products are rosy red. The products are small grinding wheel type whetstone, standard type whetstone and grinding head type whetstone. When grinding the workpiece, it can maintain sharp edge and stable geometry for a long time.

It is suitable for forming and grinding of instrument industry, precision parts, micro cutting tools, tools and precision abrasive tools, etc. The precision surface roughness of machining can reach about 0.05μm.

Product SPECIFICATIONS: flat sand wheel whetstone with diameter less than 100 for small grinding wheel type, whetstone with various geometric shapes less than 200*50*25 for standard type, whetstone with diameter less than 25 for grinding head type.

Grinding method

About diamond grinding paste, particle size from W40 to W0.5. W40 is the coarsest, with a large amount of grinding, and W0.5 is the smallest. It is used for polishing, and it does not anneal, and it can also grind the hard knife.

Method of use:

The coarse W40 abrasive paste applied to borotartar can accelerate and increase the grinding amount without annealing.

Then, AFTER the rough grinding paste on the knife is cleaned, W0.5 grinding paste is applied to the ruby or natural jade for polishing, and the effect thrown out is a mirror.

Green silicon carbide, white corundum, brown corundum of these three kinds of whetstone hardness is not enough, coupled with a little coarse particle size, easy to grind out the cross, and the other three kinds of whetstone in polishing, grinding will not annealing.

If the particle size is greater than 1000, there is no difference. It mainly depends on the grinding paste used. When the grinding paste of W1.5 is applied to the ruby with 1000 mesh, its grinding effect is the effect of the grinding paste of W1.5, that is, the effect of the whetstone with 2500 particle size

Grinding Stone,Diamond Grinding Pellets,Carborundum Oil Stone,Oilstone Sharpening Stone

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