Since ancient times, human beings have used the impact of water flow to make hydraulic machinery such as waterwheels and watermills. If water is sprayed from a high-pressure water gun, its impact will be even greater. Used in the coal mining industry in the former Soviet Union, it was called hydraulic coal mining. The high-speed jet of water is blocked by the coal seam, and the speed drops suddenly, and an impact force large enough will be generated in an instant, causing brittle fractures in the coal seam to complete the coal mining operation. Inspired by this, scientists in the former Soviet Union developed a high-pressure water jet cutting technology, and an American company obtained a patent for this technology and commercialized it.
Ordinary water passes through an ultra-high pressure pressurizer to pressurize the water to 4,000 bar (60,000 psi) and then passes through a small nozzle (with a diameter of 0.004 inches to 0.016 inches), which can produce a process of up to 915 meters per second (about Three times the speed of sound) water arrow, this water arrow can do various surface treatments and cut various non-metallic materials such as paper, diapers, glass, fiber, sponge, etc.
Basic characteristics: The main mineral composition of beeswax topaz is dolomite, followed by calcite and a small amount of quartz. Due to the difference in the content of color elements or impurities, jade often presents different yellows, generally honey yellow and yellow, but also light yellow, brownish-yellow, and other colors; waxy luster, glass luster, slightly transparent To translucent. It has cryptocrystalline, fine-grained structure, massive structure, dense, fine, and tough texture. The hardness is 4.3-4.5, it is brittle, the density is about 2.7 g/cm3, and the average compressive strength is 2478kg/cm2.
Detailed classification: Beige topaz is divided into different types according to its different jade texture and color. It is like the same jade, but it is divided into violet, emerald green, lotus root powder, parrot green, and so on. Beige topaz can be divided into:
Ripple yellow-the pattern resembles layers of waves, rising step by step, layering on top of each other, or going eastward like a big river, majestic and majestic.
Lightning yellow-a piece of jade suddenly flashes with several zigzag white lines, yellow lines, and red lines, just like irregular lightning in the sky. It is breathtaking, fantasy, and magnificent, and it is very artistic.
Ice yellow-like a frozen yellow liquid, there are pieces of ice in the jade.
Millet yellow-the color is like millet, light in color.
Golden jade-the color is like gold, and the color is deep.
This classification is not strict. Natural jade is always diverse and has several characteristics at the same time.