High Carbon FeMn For Steelmaking HRFeA-096

High Carbon FeMn For Steelmaking HRFeA-096

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Specifications

High carbon FeMn, vanadium nitrogen
Conform to
Standard, VN12, VN16
GB/T19001-2008/ISO9001:2008
GB/T24

Advantage for vanadium nitride

advantage	reason
Grain refinement and strengthening	Compared with VC, VN is better for the separation of V(C,N).
Reduce vanadium and lower cost	V(C,N)will cost fewer vanadium than that of VC, and this could reduce 40%, compared with Ferro-Vanadium.
Improve weldability, notch ductility and forgeability.	Use less carbon and less alloy addictive agent could reach the same strength level.
Effectively strengthening various carbon steel.	When temperature reach 1050 degrees Celsius, V(C,N) will have high solubility in austenite. Vanadium nitride work effectively in high, medium and low carbon steel.
Stain aging and shaping loss	Through choose Nitrovan 7 or Nitrovan 12, the proportion of V and N could be selected, avoiding nomadic nitrogen.

products standard

Brands	Composition(W/W)%
	V	N	C	P	S
VN12	77-81	10.0~<14.0	≤10.0	≤0.06	≤0.10
VN16		14.0~18.0	≤6.0

High Carbon FeMn For Steelmaking HRFeA-096

Q:What does American standard cemented carbide grain size C mean?: In addition to carbon atoms, nitrogen atoms and boron atoms can also enter the voids in the metal lattices to form interstitial solutions. They are similar to those of interstitial carbides, which can conduct electric conduction, heat conduction, high melting point, hardness and brittleness. The matrix of cemented carbide consists of two parts: one is a hardening phase, and the other is a bonding metal. Is 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 DEG C. In addition, transition metal nitrides, boride and silicides have similar properties and can also act as hardening phases in cemented carbides. The presence of the hardened phase determines the alloy's extremely high hardness and wear resistance. Bonding metals are generally iron based metals, and cobalt and nickel are commonly used. In the manufacture of cemented carbide, the size of the raw material powder is between 1~2 microns and the purity is very high. 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, and then drying and sieving to prepare a mixture.

Q:What kind of cemented carbide is the most wearable?: Tungsten particles smaller, higher hardness, higher wear resistance.Mainly depends on the use of conditions, the most wear-resistant carbide materials may be more brittle, so it may not be able to use.According to the hardness and toughness of cemented carbide is divided into several types, such as YG8, YG15 etc., is the wrong type of high speed steel has great influence on the service life, may your home (peak steel) inside with a tungsten component but not tungsten.Cemented carbide is a powder metallurgy process with tungsten carbide as the main body and sintered with cobalt or other bonded metals. The tungsten content of tungsten carbide is above 80%.Tungsten is a hard alloy. Tungsten is raw material for smelting ferrotungsten adding steelmaking process in molten steel for tungsten and also called high speed steel or tool steel, the tungsten content in 15-25%.

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:Big brother on the 1 floor is exaggerating. It's impossible at all: The shrinkage coefficient must be taken into account, but the technical requirement is quite high and the molding is difficultIn the processing of hard alloy threads, if high precision, small hole, can be used in EDM processing, now EDM with C axis, don't work fixture, the thread can play any pitch, as long as the processing thread electrode is.

Q:Carbide and carbon steel: Hard alloy knife, cutting knife, carbon steel is the food, so simple.

Q:Can ceramic tools process cemented carbides?: No, ceramic cutters are usually used to process cast iron (high speed machining) and high hardness steel (Cui Huogang).Generally, the hardness of ceramic tools reaches HRA91-95, while the hard alloy can reach HRA93.The main components of ceramic tool materials are Al2O3 with high hardness and melting point. Si3N4 and other oxides and nitrides, and then added a small amount of metal carbide, oxide or pure metal additives, formed by pressing, sintering, and then a tool material. Its hardness can reach HRA91 ~ 95, and the hardness of HRA80 can still be kept at the cutting temperature of 1200 DEG C. In addition, the chemical inertia is large, the friction coefficient is small, and the wear resistance is good, and the service life of the processed steel pieces is 10~12 times of that of the hard alloy.Its major disadvantages are brittleness, low bending strength and low impact toughness. Therefore, it is mainly used for semi finishing and finishing, high hardness, high strength steel and chilled cast iron and other materials. Commonly used ceramic cutting tools are alumina ceramics, composite alumina ceramics and composite silica ceramics.Taiwan is hard gold metal carbide with high heat resistance and high wear resistance (WC tungsten carbide, titanium carbide, tantalum niobium carbide TiC TaC, NbC etc.) and metal binder (cobalt, nickel and molybdenum) powder metallurgy products under high temperature sintering. The hardness of HRA8 9 ~ 93, 850 ~ 1000 DEG C high temperature resistant, has good abrasion resistance, allowing the use of the cutting speed can reach 100 ~ 300m / min, can be a variety of materials including machining hardened steel, therefore it is widely available.

Q:Classification of Cemented Carbides: 1 tungsten cobalt carbide2, tungsten, titanium and cobalt carbide3, tungsten, titanium, tantalum (niobium) carbide

Q:Why is carbide cutting tools less standard than high speed steel cutting tools?: Because the hard alloy material rigidity is better, the brittleness is bigger, the toughness is relatively bad, namely is easier than the high speed steel cutting tool to break off, after grinding blunt, the force is more complex. Greater resistance. Do you want your expensive tool to break?.

Q:How to tell what is hard alloy and what is high speed steel?: Carbide is much more important than high speed steel.The proportion of cemented carbide is 14~15g/cm3, and the steel is only 8g/cm3

Q:Several hard alloy cutter lathe with?: YG car, pig iron and so on, YT, steel and the like, high temperature resistant, YW car alloy steel, the highest strength.

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