high purity AL2O3 95%

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Brown Fused Aluminum Oxide BFA
Rust removal+Reusable abrasive
Paint-stripping+Roughening
blast-cleaning

Brown Fused Aluminum Oxide BFA

Brown fused alumina is made from high quality bauxite by fusing in an electric arc furnace at high temperature. It has good toughness and high hardness. It is suitable for manufacturing of vitrified and resin bonded tools, and for lapping , polishing , and sand blasting and sand cleaning.
It can be also used to make superior refractory products.

Application Industry : A brasives industry, refractory materials
Abrasive cutting tools, moulds, bulletproof material
To make mechanical parts, all kinds of mold
To do mechanical parts, all kinds of mold
Ceramic grinding tool, high-grade abrasive, abrasive, abrasive belt, organic coated abrasive tool

Brown Fused Alumina SPEC:

Items		Unit	Index	Typical
	Al2O3	%	95%min	95.6
Chemical	SiO2	%	1.50max	1.36
Composition	Fe2O3	%	0.30max	0.07
	TiO2	%	3.00max	2.05
	CaO+MgO	%	1.0max	0.7
Melting point		°C	2050
Refractoriness		°C	1980
True density		g/cm3	3.90min
Mohs hardness		---	9.00min
Grain size		mm	0-50,0-1, 1-3, 3-5,5-8
Fine powder		mesh	-80, 100, 150, 200, 325F
Abrasive grade		FEPA	F14---F30—F150-F220

high purity AL2O3 95%

Q:What are the parameters of the wear resistance of cemented carbides in addition to their hardness?: The wear resistance of cemented carbide is related to the proportion of titanium carbide and cobalt carbide contained in it. It contains more titanium carbide, less cobalt content, higher hardness and better wear resistance. But brittleness also increases, easy to break the edge, so it is suitable for finishing.

Q:YW1 what do you mean by "YW" in carbide cutter head?: Y represents the metallurgical (Yejin) Department standard. W stands for universal (Wanneng) alloy

Q:What does carbide K15-K20 refer to?: The smaller the value, the harder the hardness of the table is and the less resistant it is to the impact;

Q:Compare the advantages and disadvantages of high speed steel and cemented carbide: High speed steel, high carbon steel, can be divided according to chemical composition of tungsten and molybdenum in steel, cutting performance is divided into high performance of ordinary high speed steel, high speed steel. Through strengthening heat treatment of high speed steel.

Q:What is the relation between the number of teeth of carbide saw blades?: 1., it is mainly used for longitudinal sawing of small diameter logs. According to the size of the pre adjustment, a plurality of sheets can be sawed off at one feed, which is widely used in the sawing process of the front path, small diameter and log sawing of blockboard and finger jointing factories. 2. compared with the band saw, the processing efficiency is high, the precision is high, the operation is simple and convenient, the technical requirement of the worker is not high, and the defects of low processing precision, low efficiency and high operation technical requirements of the band saw are compensated. What is the difference between the 1:40 tooth and the 60 tooth? Because of the small friction, the 40 teeth will save effort, and the noise will be small, but the 60 teeth will be cut more smoothly. A carpenter usually uses 40 teeth. The price is the same, ha ha. For small sounds, use thicker ones, but thin quality is better. The more the number of teeth, the more smooth the cut section. If your machine is stable, the sound will be smaller. What is the difference between the 2:30 wood cut saw blade and the 40 Tooth cut wood saw blade? Main: 1 cutting speed is different. 2 different gloss. The angle of the teeth of the 3 saw blade itself is different.

Q:What are the main causes of wear of high speed steel cutting tools and carbide cutting tools?: Basically the same, such as plastic wear, flank wear, crater wear, chipping... And so on, each kind of wear phenomenon has the reason, also has some remedial or the improvement measure....High speed steel has lower hardness and abrasion resistance ability is not high, but good toughness, high precision of complex cutting tools, such as broach, gear cutter or the use of high speed steel more, while the standard NC tool are used in a lot of hard alloy or indexable tool..

Q:Classification of Cemented Carbides: Baidu Encyclopedia of hard alloy introduced very clearly

Q:Carbide die how to calculate weight, that is to say, its kg weight: Cemented carbide die weight = volume * density, tungsten cobalt carbide, density 14.4~15.3, cobalt content is higher, the lower the density.The density of tungsten, cobalt and titanium carbide is 9.7~13.2, and the higher the content of titanium carbide, the lower the density.

Q:We'll drill on the stainless steel column. Which bit is better?: High cutting force and high cutting temperatureThis kind of material has high strength, large tangential stress and large plastic deformation during cutting, so it has great cutting force. In addition, the material has a poor thermal conductivity, which results in the increase of cutting temperature, and the high temperature often concentrates in the long and narrow area near the cutting edge of the tool, thus speeding up the tool wear.Serious work hardeningAustenitic stainless steel and some high alloy stainless steel is austenite, high work hardening tendency when cutting, usually plain carbon steel several times, the tool in hardening region cutting, shortening tool life.Easy to stick the knifeBoth austenitic stainless steel and martensitic stainless steel exist in the process of chip toughness, cutting temperature is very high. When the tough chip flows through the rake face, the bonding, welding and other sticking phenomena will occur, which will affect the surface roughness of the machined parts. ??Tool wear acceleratedThe materials generally contain high melting point elements, large plasticity, high cutting temperature, so that the tool wear faster, sharpening and changing knives frequently, thus affecting the production efficiency and improving the tool cost.Mainly to reduce the cutting line speed, feed. With special processing stainless steel or high temperature alloy cutting tools, drilling, tapping the best internal cooling

Q:How to tell what is hard alloy and what is high speed steel?: Carbide and high-speed steel, grinding wheel spark identification, red spark is high-speed steel, no grinding wheel with hammer hammer, easily crisp alloy, also can use magnet experiment, carbide is not sucked, high-speed steel can suck.Cemented carbide is a kind of alloy material made by powder metallurgy process of hard metal and bonding metal of refractory metal. 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.Is a kind of high speed steel tool steel with high hardness and high wear resistance and high heat resistance, and high speed tool steel or steel, white steel. High speed steel was developed by American F.W. Taylor and M. White in 1898. High speed steel has good technical performance, good strength and toughness, so it is mainly used to make complex cutting edge and impact resistant metal cutting tools. It can also manufacture high temperature bearings and cold extrusion dies. In the production of high-speed steel by melting method, after 1960s and the emergence of powder metallurgy high speed steel, its advantage is to avoid melting methodproduction caused by carbide segregation caused by mechanical performance and reduce the deformation of heat treatment.

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