FeMn/femn Used In Steelmaking

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Specifications

1 Professional manufacturer
2 largely used in steelmaking
3 Inspection:CIQ SGS

1 Application

Ferromanganese a ferroalloy with high content of manganese, is made by heating a mixture of the oxides MnO₂ and Fe₂O₃, with carbon, usually as coal and coke, in either a blast furnace or an electric arc furnace-type system, called a submerged arc furnace. The oxides undergo carbothermal reduction in the furnaces, producing the ferromanganese. Ferromanganese is used as a deoxidizer for steel.

2 Specification

Type	Brand	Chemical Compositions (%)
		Mn	C	Si		P		S
			C	1	2	1	2	S
			≤
Low-carbon ferromanganese	FeMn88C0.2	85.0-92.0	0.2	1.0	2.0	0.10	0.30	0.02
	FeMn84C0.4	80.0-87.0	0.4	1.0	2.0	0.15	0.30	0.02
	FeMn84C0.7	80.0-87.0	0.7	1.0	2.0	0.20	0.30	0.02
Medium-carbon ferromanganese	FeMn82C1.0	78.0-85.0	1.0	1.5	2.5	0.20	0.35	0.03
	FeMn82C1.5	78.0-85.0	1.5	1.5	2.5	0.20	0.35	0.03
	FeMn78C2.0	75.0-82.0	2.0	1.5	2.5	0.20	0.40	0.03
High-carbon ferromanganese	FeMn78C8.0	70.0-82.0	8.0	1.5	2.5	0.20	0.33	0.03
	FeMn74C7.5	70.0-77.0	7.5	2.0	3.0	0.25	0.38	0.03
	FeMn68C7.0	65.0-72.0	7.0	2.5	4.5	0.25	0.40	0.03

Application

1. Mainly used as alloy additives and deoxidizer in steelmaking.

2. Used as alloy agent ,widely applied to be widely applied to alloy steel, such as structural steel, tool steel, stainless and
heat-resistant steel and abrasion-resistant steel.

3. It also has the performance that it can desulfurize and decrease the harmfulness of sulfur. So when we make steel and cast iron, we always need certain account of manganese.

Q: suitable for processing the whole alloy drilling, milling, reaming and other cutting tools. This alloy tungsten, cobalt content, how many of you?: Just found the carbide under YK15, its cobalt content in 10%.According to its brand, YK15 should be used to process cast iron, so the main ingredient should be WC+Co.So its WC component should be in 89-90% (just for inference, for reference only)Based on the molar mass of WC, the mass fraction of the W content is deduced

Q: What is the difference between tungsten cobalt alloy and YG8 and YG6 series cemented carbide?: YG6, YG6X, YG8, YG8C, YG11C, and so on,YG6 hardness and wear resistance are slightly higher than that of YG8, but strength and toughness are not as good as YG8

Q: Carbide coated drill bit will reduce the service life after grinding, how to avoid?: 1. carbide drills are generally worn in the back. Then it has little influence on service life.2., the high strength of the workpiece material, easy to cause the front of the drill (spiral groove) wear, bit life impact.3. the wear of drill bit belt has the most serious influence on drill bit life.4. so, when using the drill, pay attention to it:(1) the drill should be kept as small as possible at the top of the drill bit.(2) the spindle of machine tool has enough rigidity and precision.(3) the drill shall be replaced and sharpened when used.5., the drill can be re coated after grinding, pre treatment should be done before coating. To increase the coating effect.

Q: Carbide grades, properties and applicable ranges: (2) tungsten titanium cobalt (WC+TiC+Co) cemented carbide (YT);Because of the hardness and melting point of TiC was higher than WC, so compared with YG, the hardness, wear resistance, hardness increases, bond high temperature, strong antioxidant capacity, and will generate TiO 2 at high temperature can reduce the adhesion. But poor thermal conductivity, low flexural strength, so it is suitable for processing steel etc. the toughness of materials.

Q: High end markets for cemented carbides: The high-speed steel cutting tools are being reduced by 1% to 2% annually, and the proportion has been reduced to less than 30%.At the same time, the hard alloy cutting tools in China has become the main tool required for processing enterprises, is widely used in the production of auto parts, mold manufacturing, aerospace and other industrial fields, but our tool enterprises blindly, but a large amount of production of high speed steel and some low-grade standard tools, with no consideration the saturation of the market and enterprises need to end with high value-added, high-tech high-end tool market "over" to foreign enterprises.The data shows, our tool has annual sales of approximately 14 billion 500 million yuan, of which the proportion of hard alloy cutter is less than 25%, more than carbide tool but domestic manufacturing industry has occupied the required tool 50%, the blind production has serious domestic manufacturing industry can not meet the growing demand for hard alloy cutting tools, forming the vacuum in the high-end market, is dominated by foreign enterprises.

Q: What materials are ZK20 cemented carbides processed?: ZK20 belongs to the K hard alloy blades can car many materials, such as: wrought iron steel low alloy cast iron high alloy cast iron ductile cast iron Aluminum Alloy hard plastic

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: What are the common kinds of cemented carbides?: The grade by "YW" ("hard", "million" Pinyin prefix) and sequence number, such as YW1. (2) grade, composition, performance and application of commonly used hard alloy (see table below) categories of chemical composition of W/% grade performance scope of tungsten cobalt alloy YG3X 96.5 - < 0.53 for cast iron, nonferrous metals and alloy fine boring, fine car, can also be used for fine machining of alloy steel, Quenched steel and tungsten and molybdenum materials; high tungsten carbide content, binder content is low, its high hardness, flexural strength is low; therefore, YG3 is suitable for finishing; whereas the YG15 can bear larger load, suitable for roughing. Suitable for cast iron, nonferrous metals and alloys and non metallic materials roughing during continuous cutting, interrupted cutting of the semi refined car, fine car for percussive rotary drilling machine drilling hard rock, containing coal cutter teeth, hard rock drill, well drilling hard rock percussion drill bit, stamping die, planer and knife for percussive rotary drilling machine and other chisel hard and extremely hard rock, in the epidermis processing great work under stress perforation and stamping tools tungsten titanium cobalt alloy YT5 855 - 10 for carbon steel, alloy steel, forging, stamping, casting, uneven section, rough turning, discontinuous cutting the rough plane semi finishing.

Q: What is the relation between the number of teeth of carbide saw blades?: Hard alloy tooth less than wood section tooth more smooth, less than the price of gear teeth is cheap, less than the number of gear teeth is not easy to burn saw, if multiple saw tooth must use less, if it is a plywood class, must use the teeth reduce edge collapse.

Q: Customers ask whether cemented carbide can be used in the food industry! ~: The processing link is possible. Food segment will not be able to ah!

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