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 does WC refer to in cemented carbides?: Tungsten, titanium and cobalt carbideThe main components are tungsten carbide, titanium carbide (TiC) and cobalt.The grade by "YT" ("hard ti" Pinyin prefix) and the average content of titanium carbide.For example, YT15, which represents average TiC=15%, is tungsten carbide cobalt carbide with the remainder of tungsten carbide and cobalt content.Tungsten, titanium, tantalum (niobium) carbidesIs the main component of tungsten carbide, titanium carbide, tantalum carbide (or niobium carbide) and cobalt. This kind of hard alloy is also called universal cemented carbide or universal hard alloy.

Q: What is the difference between them?From hardness, abrasion resistance analysis!: A total of 10 ~ 25%. Under the condition of heat generated in the high-speed cutting (about 500 C) can still maintain a high hardness of HRC can be more than 60. This is the main characteristic of high speed steel - red hardness. And carbon tool steel after quenching and low temperature tempering, at room temperature has very high hardness, But when the temperature is higher than 200 DEG C, the hardness decreased rapidly, at 500 DEG C hardness has been reduced to a similar degree with annealing state, completely lost the ability of metal cutting, which limits the production of carbon tool steel and high-speed steel cutting tools. The red hardness, make up for the fatal defect of steel with carbon. That can be used in the manufacture of cutting tools.

Q: What is the hardness of cemented carbide?: Different grades, different hardness, usually (86 ~ 93HRA, equivalent to 69 ~ 81HRC);

Q: What is the coefficient of thermal expansion of cemented carbides?: [cemented carbide] an alloy material made from powder metallurgy by hard metals and bonded metals of refractory metals. 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. 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: One kind of steel is called T10, and another is carbon steel. What kind of hardness and strength do they have?: 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: How can I buy carbide die on the Internet? Who can help?!: The mould made from the same carbide alloy made from Zhuzhou will not be sold.

Q: Material properties of Cemented Carbides: Hard alloy with high hardness of refractory metal carbides (WC, TiC) micron powder as the main ingredient, with cobalt or nickel (Co) (Ni), molybdenum (Mo) as the binder, powder metallurgy products in vacuum furnace or hydrogen reduction sintering furnace. IV, B, V, B, VI, B group of metal carbides, nitrides, boride, etc., because of hardness and melting point is particularly high, collectively referred to as cemented carbide. The structure, characteristics and application of hard gold content are described with carbide as the key point. IV, B, V, B, VI, B group metals and carbon formed in the metal type carbide, because the carbon atom radius is small, can be filled in the gaps of the metal lattice, and retain the original lattice form of metal, forming interstitial solid solution. Under appropriate conditions, such solid solution can continue to dissolve its constituent elements until it reaches saturation. Therefore, their composition can change in a certain range (such as the composition of titanium carbide in TiC0.5 ~ TiC changes), chemical formula does not conform to the rules of valence. When the dissolved carbon content exceeds a certain limit (such as titanium carbide in Ti: C=1: 1), the lattice type will be changed, the original metal lattice metal lattice into another form, then the interstitial solid solution called interstitial compounds.

Q: After welding, and then sharpening, grinding into 4 Pyramid shape, and then used to knock stone, which is not easy to bad, which is more durable? Model number is D224, I would like to ask you, which should I buy? I'm mainly used for knocking stones.: YG8 is suitable for YG6 with higher hardness, but less impact toughness

Q: allowing the use of larger anterior angle, generally high speed steel tool than the hard alloy tool angle _______.A0 degrees ~5 degrees, B6 degrees, ~10 degrees, C11 degrees, ~15 degrees: for example: in the car Aluminum Alloy, magnesium alloy, copper alloy, high speed steel cutter and carbide cutting tools before angle is the same; while in the car with different strength steel, high speed steel cutting tool rake angle is the strength of the cemented carbide tool than the angle of 5 degrees.

Q: What are the types and types of carbide inserts?: This problem suggests that you find a famous brand of knives, and then ask for a sample of knives to understand, such as the three high, Walter, Kenna and so on. Because this thing has many points, can not simply understand. According to the processing equipment, it may be divided into carbide inserts for lathe cutting, carbide inserts for milling and carbide inserts for boring. According to the different processing materials, can be divided into non-ferrous metal, used for cast iron, alloy steel. It can also be classified according to the materials used in carbide inserts, such as cubic boron nitride. A thorough understanding of the proposals used. The carbide blade is a general term (outlined) that covers too wide a range of types and models. Just like you ask, "what's the Chinese surname? What's the name?"". Unanswerable.

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