The red rosewood black rosewood is the same as the rosewood species, so the black rosewood and the red rosewood are often used for comparison. So which is the black rosewood and the red rosewood? What is the reason for this is also a topic that everyone often discusses. Below, Xiaobian will come to explain it.
Red rosewood characteristics
The wood and color of the red rosewood are similar to the lobular rosewood. The annual ring pattern is straight filamentous, the blinking is larger than the red sandalwood, and the color is similar to the red color. Identification of red rosewood first depends on whether its growth wheel is obvious. Authentic red rosewood wood is hard and heavy, usually sinking in water. Its heartwood is orange reddish brown, purple reddish brown, deep purple, and there are purple and black stripes and mountains and waters. But the red rosewood wood texture is straight and lacks change.
Black rosewood characteristics
The color of the black rosewood is chestnut brown, with a lot of obvious black stripes, hard wood, good polishing effect, clear and beautiful black texture, like the overlapping and undulating mountains, very beautiful. Once the black rosewood is polished and smoothed, it gives a mellow and subtle beauty, which is the main method to identify black rosewood.
Black rosewood is more expensive than red rosewood
Black rosewood is the second only wood of red sandalwood and huanghuali. The wooden structure is fine and the texture is very clear. The furniture made is durable and durable. After a hundred years without deformation, it is widely used in the Ming and Qing Dynasties. The "black pearl" in the rosewood is one of the most expensive in the rosewood. So black rosewood is more expensive than red rosewood.
Some information about the red rosewood and black rosewood is introduced here. If you want to know more, please pay attention to GO Jiaju.
Source: GO Jiaju
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Pyrite as Fillers Used in Grinding Wheels/ Abrasive Tools
Ablation grinding wheel / abrasive( filling agent )
PYRITE__As fillers used in grinding wheels/ abrasive tools
Place of Origin: Henan Luoyang, China
Detailed introduction: s filling agent for ablating grinding wheel abrasive, which can effectively reduce the grinding wheel temperature during ablation, improve the heat resistance, and prolong the service life of the grinding wheel.
Formation of a protective layer
(1)The reaction absorbing oxygen occurs between 400 and 475 degrees, thereby reducing the oxidation of resin, reducing the oxidation burn of workpieces, and prolonging the working life of grinding wheels at high temperature.
4 FeS2 + 11 O2â†’2 Fe2O3 + 8 SO2
(2) 4 FeS + 7 O2â†’4 Fe2O3 + 4 SO2
400-475 degrees is a limit that the grinding wheel can easily reach. The above reaction creates an oxygen-free and hypoxic environment for the grinding wheel at the micro level, thereby improving the high-temperature performance of the grinding wheel.
Decomposition reaction occurs at 650-degree heat absorption, thereby reducing the working temperature of the grinding wheels.
FeS2â†’FeS + S
(3) It enters the melting state at about 1100 degrees, which becomes a good lubricant to protect the grinding wheel FeS(s)â†’FeS(l).
(4)Sulfur, sulfur dioxide and sulfur trioxide react with the workpiece surface to form FexSy:
S: 48%min, FE: 42%min, SIO2: 3.0%max, PB: 0.1%max,
ZN: 0.1%max, AS: 0.1%max, . C: 0.3%max, CU: 0.2%max,
H20: 1.0%max, SIZE: 95%min
Granularity: (0-3)mm/(3-8)mm/(3-15)mm/(15-50)mm or other particle size.
Packing: 25KG/500KG/1000KG/BAG or 1000KG/BAG or other packaging.
Note: if there are special requirements, the product can be customized according to clients` requirements.
(In addition, our company is specialized in the production of `Hengkai Metallurgical" Brand - ferro sulphur series for foundry, copper removal agent series for lead smelting, debismuthizing agent for lead smelting, iron sulphide series for resin grinding wheel abrasive industry, iron sulphide series for brake pad friction industry, iron sulphide series for heavy metal wastewater treatment, iron disulphide series for soil improvement, iron disulphide for lithium battery anode, alloy sand series for wear-resisting flooring industry, ferrous sulphide powder series for ferrous sulphide cored wire, ferrous sulphide for ferrous sulphide cored wire, iron sulphide for resin grinding wheel, ferrous sulphide powder for heavy metal wastewater treatment, ferrous sulphide powder for soil improvement, ferrous sulphide cored wire, pyrite, ferrous sulphide ore, molybdenum oxide, high purity molybdenum trioxide, ammonium molybdate, titanium dioxide, cryolite powder, mullite, etc.)
Abrasive Tools Pyrite
LUANCHUAN COUNTY HENGKAI METALLURGICAL MATERIALS SALES CO.,LTD , https://www.pyritechina.com