calcium carbide -- a grey salt of CaC
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calcium carbide is a grey salt of calcium (CaC) used in making acetylene。
Application：
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
- Q: What kinds of carbide cutting tools are used in the 16 and 20 manganese grinding of the lathe?
- Commonly used in 200*25*32 or 250*25*32 green carbide grinding wheel, hardness K or L, particle size 60.Cemented carbide: an alloy material made from powder metallurgy by hard metals and bonded metals of refractory metals. 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. Now, the cutting speed of new carbide tools is several times that of carbon steel. Hard alloy with high hardness, strength and toughness, good wear resistance, heat resistance, corrosion resistance and a series of excellent performance, especially high hardness and wear resistance of it, even at a temperature of 500 DEG C also remained unchanged, at 1000 degrees C still have high hardness.
- Q: What is called cemented carbide?
- In addition to carbon atoms, a nitrogen atom and void boron atoms can enter the metal lattice, formed interstitial solid solution. With the properties of mesenchymal type carbide. They are similar to electrical and thermal conductivity, high melting point, high hardness, brittleness and is also large.The matrix of cemented carbide consists of two parts: one is a hardening phase, and the other is bonded metalIs the hardening phase transition metal carbides in the periodic table of elements, such as tungsten carbide, titanium carbide, tantalum carbide, their hardness is very high, the melting point of 2000 DEG C, and some even more than 4000 degrees. In addition, nitrides, borides, silicides of transition metals have similar characteristics, can also act as a hardening in hard alloy the phase hardening phase due to the existence of alloy with high hardness and wear resistance.Bonding metals are generally iron based metals, and cobalt and nickel are commonly usedManufacture of hard alloy, the size of raw powder in 1 ~ 2 microns, and high purity. Raw materials according to the provisions of the proportion of added alcohol or other medium in the wet ball mill in wet grinding, making them fully mixing, crushing, drying, sieving after adding wax or gel forming agent of a class then, after drying and sieving to prepare a mixture. Then, the mixture granulation, pressure type, heated to the melting point of the metal bond (1300 to 1500 DEG C) when hardening phase and bonding metal to form eutectic alloy. After cooling, the hardening phase distribution in grid bonded metal composition in each other closely together, form a firm whole. The hardness of the hard alloy depends on the hardening phase content and grain size, the hardening phase content is higher, more fine grain, hardness is greater. The toughness of cemented carbide by bonding metal bonded gold decision. The higher the content, the greater the flexural strength
- Q: Compare the advantages and disadvantages of high speed steel and cemented carbide
- Hard alloy powder is: high hardness metal carbide to micron order, with cobalt, molybdenum, nickel and other binder, under high temperature and high pressure sintering temperature. The carbide content in hard alloy than high-speed steel, high hardness, good abrasion resistance (HRC75--80).Hard alloy red hardness can reach 800-1000 degrees.Carbide cutting speed is 4 - 7 times higher than that of high speed steel, and cutting efficiency is highThe disadvantage is that the bending strength is low, the impact toughness is poor, the brittleness is great, and the impact and vibration resistance are low
- Q: Japan steel tungsten carbide which is good
- Japan steel tungsten carbide recommended Kunshan aloi precision mould Co. Ltd, Japan Istanbul technology research of copper tungsten alloy used for professional sales of Japanese steel tungsten carbide and discharge EDM, silver tungsten alloy, copper alloy; discharge EDM tungsten copper, copper thread electrode; non-standard thread electrode, thread grinding machining
- Q: Is carbide resistant to alkali?
- That theory is divorced from practice is the greatest misfortune
- Q: Carbide drills and cobalt high speed steel bit, which is good? What's the difference between these two materials?
- The hard alloy bit too brittle is not recommended to use the titanium cobalt drill hardness is 12 degrees lower than the hard alloy but the impact is far better than other aspects of hard alloy, so I recommend the titanium cobalt drill, processing all kinds of materials, as long as the titanium cobalt drill deal, hard alloy as the game, looking for experience in practice, there are the problem can contact my 12 years of experience in fitter
- 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: We'll drill on the stainless steel column. Which bit is better?
- Carbide drills are suitable for high speed steel
- Q: Which prawns know of what is called red hard alloy.
- A large amount of microscopic motion of microscopic particles (molecules, atoms, etc), i.e., irregular motion of a large number of microscopic particles that make up macroscopic objects or systems.
- Q: Would you like to ask me if the hard alloy can be polished with ordinary metallographic sand paper? Well, what kind of sandpaper does it usually start with? Thank you!
- Hard alloy is too high and can not be polished by ordinary metallographic sand paper. It should be put on the machine tool by diamond grinding wheel, and the cost is also very cheapReally manual grinding, then you can add grinding cream to try, but the efficiency is very low
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calcium carbide -- a grey salt of CaC
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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