calcium carbide -- a grey salt of CaC

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calcium carbide  is a grey salt of calcium (CaC) used in making acetylene



1、 Calcium carbide to generate acetylene after reaction with water to the synthesis of many organic compounds

2、  Heating powdered calcium carbide react with nitrogen gas, to generate calcium cyanamide, namely lime nitrogen, heating lime nitrogen and salt of black cyanide for gold mining and non-ferrous metal industry

3、  Calcium carbide itself can be used in iron and steel industry of desulfurizer

4、  Under the old miners ore, the calcium carbide will be use to generate in the tin can weave the calcium carbide acetylene (C2H2) into a lamp

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Q:Now on the market scrap carbide blade (YG8 milling cutter) how much is one kilogram?
Hard alloy is widely used as a tool material, such as turning, milling, planing, drilling, boring, used for cutting cast iron, non-ferrous metals, plastics, chemical fiber, graphite, glass, stone and steel, can also be used for cutting steel, stainless steel, high manganese steel, tool steel and other hard processing materials.
Q:Zhuzhou Hard Alloy Co. Ltd., Xiamen Jiangxi copper and tungsten, which is better,
As a Zhuzhou person, I recommend the Zhuzhou cemented carbide to you, not only because the units are good, but also the city of Zhuzhou is very good. You must have lived here since you worked here. House prices are much lower than in many second tier cities. The standard of living is also good, the large supermarkets are complete, Fantawild is the Southwest's largest amusement park.... Wait
Q:Which hardness is 5 of carbon steel and alloy steel?
T10 is a kind of carbon steel, carbon containing 1% carbon steel, excluding alloy elements, alloy steel is alloy element steel. The strength of carbon steel and alloy steel which has high hardness, not only carbon and alloy content, to look at the condition of heat treatment, even if the same carbon content of carbon steel and alloy steel under different heat treatment conditions, may be carbon steel high hardness alloy steel with high hardness can also be. Still do not understand this is not nonsense, domestic high quality steel, not only domestic technology is not in place, the user is not willing to pay a high price to buy high quality steel. Always want to spend less money to buy things, it is not possible.
Q:What are the differences in performance between cemented carbide cutting tools and PCD cutters (polycrystalline diamond)?
PCD has a very high hardness, but its toughness is not as good as carbide, much lower than high-speed steel, therefore, the main failure form of PCD cutting tool is cutting edge.PCD cutters can effectively process non-ferrous metal materials and non-metallic materials. Such as copper, tungsten and other non-ferrous metals and their alloys, ceramics, hard alloy, various fiber and particle reinforced composite materials, plastics, rubber, graphite, glass and wood, but the diamond is not suitable for cutting steel and other iron materials.
Q:How to detect carbide material is raw material or recycled material, what is the difference?
The original material has uniform particle size and stable performance.
Q:General carbide and high-speed steel blade cutting speed? (about the range is OK.)
Carbide wire feed rate F0 per revolution. 08-0. 2, high-speed steel: F0. 03-F0. 1, see what processing materials, machine tools, steel and sex
Q:Use of waste cemented carbide
Two, crushing methodFor hard alloy containing drilling is not high, because the hardness is relatively low, can use manual or mechanical means broken to a certain fineness in wet grinding mill for a period of time, to reach a certain size for reproduction of hard alloy. This force is a method has the advantages of simple process, short process, low energy consumption, no pollution to the environment, but often in the manual crushing hard alloy, metallic materials due to debris into the tools have broken material pollution, in addition, due to the hard alloy drill containing high amount of easily broken, mechanical crushing method is very limited; cemented carbide complex material by this method is also very difficult to ensure the quality of recycled products. Process method: artificial crushing is broken, crushed into powder 200 mesh or using bulk of hard alloy ball mill for crushing strikes the ball, then add in the bjm alcohol in wet grinding, and then enter the remanufacturing process of hard alloy.Some companies use cooling method: first crushing waste hard alloy in a muffle furnace heated to 80 above this immediately into the water quench, resulting in hard alloy cracking, and then enter the mechanical crushing process. This force is a method in the last century in 90s in Hebei Province Qinghe to gain popularity, there were dozens of county size ranging from recycling plant using the recycled and processed hard alloy, hard alloy processed over a thousand tons of annual production, the total output value of 300 million yuan, becoming one of the local pillar industry. At present, there is still a certain space for development of the crushing method, and the crushing method still needs to be improved by adopting more advanced and clean crushing equipment or by means of the force method which does not destroy the microstructure of cemented carbide with high efficiency.
Q:How are cemented carbides sintered?
After cooling, the hardened phases are distributed in a grid of bonded metals that are closely related to each other and form a solid whole. The hardness of cemented carbide depends on the content of the hardened phase and grain size. The higher the content of the hardened phase and the finer the grain, the greater the hardness. The toughness of cemented carbide is determined by bonding metal. The higher the bonding metal content is, the greater the bending strength is.
Q:How are cemented carbides separated from the cutting tools?
Tools are usually brazed by high-frequency induction:The blade part on the induction coil, through high frequency alternating current induction electromagnetic field, the induced electromotive force generated in the workpiece surface coupling, forming eddy current on the metal surface by eddy current heat generated in the metal surface, the welding parts usually coated with solder powder, welding can be reached until the melting temperature of workpiece. Take off the blade, too.
Q:YC45 carbide cutting tools 10
If it is stainless steel (316 or 304), it is recommended that you use YG8 alloy cutter head, processing needs low speedWith sufficient cutting fluid, this stainless steel does not require any other cutting tools.Note: YG8 impact resistance, but not high temperature

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