Brown Corundum product size

Product size in accordance with international standards and national H&X fused silica manufacturers of production, processing granularity according to user requirements. Universal size No. F4 ~ F320, its chemical composition varies depending on grain size. Prominent feature is the small crystal size, impact resistance and self-processing mill with broken particles are mostly spherical particles, sharp Pai corundum with high purity, dense texture, bulk density, self-sharpening, good toughness, H&X Aluminium hydroxide powder material Features ultra-low levels, which is made using abrasive grinding sharp, low fever, grinding ratio, and the use of less buildup; made of sintered abrasive with dark blue color after firing, can not afford to mesh cracks, no rust, suitable for the manufacture of ceramic, resin and high abrasive grinding and polishing.

Brown Corundum used in industry

H&X Brown Corundum silicon powder as an engineering ceramic material, which is widely used in industry. Mainly used for ultra-high-temperature gas turbines, aircraft engines, turbine blades, heat exchangers, furnaces, etc. Heat-resistant coating can also be used for rockets and nuclear reactors. For insulation materials, machinery wear-resistant materials, heat engine materials, cutting tools, advanced refractories and anti-corrosion, H&X silicon carbide manufacturers sealing components. Calcium silicon ceramic gas turbine combustor to do, mechanical seal rings, transmission of electromagnetic pump liquid aluminum pipes and valves, permanent mold, steel separation ring.

Brown Corundum basic introduction

After white fused alumina powder as an industrial raw material, in the arc melting temperature above H&X buy brown fused alumina degrees cooling is made by crushing plastic, magnetic separation to iron, screening into a variety of particle size, its dense texture, high hardness, sharp grain formation shaped, white fused alumina for the manufacture of ceramics, resin bonded abrasives and grinding, polishing, sandblasting, precision casting (casting special corundum), etc., can also be used to manufacture advanced refractories, codenamed "WA" on internationally accepted standards, national consistent standards, most for export, there is a certain amount of supply H&X Alumina Grinding Media users. Product size in accordance with international standards and national standards of production, processing granularity according to user requirements. Universal size No. F4 ~ F220, its chemical composition varies depending on grain size. Prominent feature is the small crystal size, impact resistance, since the mill processed if broken, the particles are mostly spherical particles, the surface of the dry-cleaning, easy binding agent.

Alumina Oxide organoaluminum compound

1, high-purity fumed aluminum H&X calcium silicon sulfate alum, ammonium sulfate, ammonium alum was synthesized (ammonium aluminum sulfate), dehydration, pyrolysis of alumina, and then by phase inversion to obtain γ-, α-alumina.
An organic aluminum compound in the polymerization of sticky polyaluminoxane solution, the aluminoxane solution polymerization was dry-spun fiber to obtain an organic aluminum compound, and then calcined alumina fiber.
The organic aluminum compound is polymerized to produce a viscous poly alumoxane solution, which use an ordinary dry spinning method, the fibers made ​​of an H&X white fused alumina suppliers aluminum compound. And then calcined to obtain alumina fibers.
2 Method 1. Crystallized aluminum sulphate dissolved in distilled water, and then slowly added under constant stirring solution of ammonium sulfate, ammonium aluminum sulfate was prepared:
Then heated to 100 ~ 200 ℃, after removal of water of crystallization, a high temperature burning pulverized into a powder, ignition starts at 800 ℃, and then heated to 1250 ~ 1300 ℃ burning 4h, alumina, obtained after cooling.

Confront refractory additives added to improve the mechanical properties

Abstract: The effect of ZrSiO4-3mol% Y2O3 additives on the mechanical properties of MgO-MgAl2O4 Sic Refractory and thermal stress parameters. Research shows that the mechanical properties of the additive significantly improved, R-Rst parameter has increased to 2 to 3 times of the raw materials. Improve the mechanical properties of refractory and thermal performance parameters depend on: the (1) ZrSiO4 Mg2SiO4 prevent decomposition of crack generation and propagation; (2) micro-cracks intersect within a short distance of propagation; (3) In case of micro-cracks to vent or ZrO2 grains produced by the silicon carbide powders of ZrSiO4 (Y2O3 and ZrO2 grains distributed in the same position) will be absorbed or extended; (4) after the introduction of ZrSiO4-Y2O3 transgranular cracking and intergranular cracks exist; (5) to increased density; (6) MgO grain size significantly smaller.
Category Industrial Technology> Chemical Industry> Portland Industrial> Industrial Refractories> Refractory Products> unshaped refractories> Spray Paint
Keywords MgO spinel refractory zircon mechanical properties of Y2O3

Refractory one project won the national invention patents

Abstract: Steel Refractories Co., Ltd. "back seam aluminum powder reduction cell sidewall filled with gravity casting material" project by the State Intellectual Property Office patent licensing. This invention proposes a design specifically for aluminum cell, the cell is filled between the shell and the side wall slot gap using gravity casting material. The monolithic refractories can improve electrolytic tank and the side wall of life, not high-temperature firing, and can achieve rapid casting, Sic Refractory field is energy efficient environmentally friendly materials.
Category Industrial Technology> Chemical Industry> Portland Industrial> Industrial Refractories> Refractory Products> unshaped refractories
Keyword artesian invention patents monolithic refractories castable SIPO electrolytic cell design channel

Effect of different binders for refractories description

Therefore, we must be selected for the workpiece material properties, in order to abrasive material good results. Binding agent must have the following properties: high strength, high heat resistance , a suitable hardness, small consumption of grinding , grinding efficiency , the surface roughness of the machined workpiece is better , fillers must be economical, but can be dissolved acid or base , to facilitate recycling . Superhard abrasive material is used as a binder resin material , phenolic resin is widely used , in addition to the epoxy resin , a novel phenol resin, a polyurethane resin, a polyimide resin, and bakelite powder. Brown Corundums can be classified according to the type : inorganic binder and organic binder . Inorganic binders include vitrified , metal bond , magnesite binding agent. Organic binder resin binders include rubber binder. Resin binder itself has good flexibility and polished , the formation of abrasive , still has a good self-sharpening , clogging, less trimming , and high grinding efficiency, low grinding temperature, surface grinding finish, so the wide range of applications . Combine to form a diamond abrasive resin bond diamond abrasive, often applied .

Development of recycling technology of refractory iron production

Sic Refractory meets the conditions of use of different devices There are many varieties and different quality. From the form of points, there are stereotypes refractories (refractory bricks) and unshaped refractories (casting material, injection materials, etc.). Iron and steel industry is large consumption of large industrial refractories, refractory these limited resources to build a recycling-oriented society, is an increasingly important issue in the future.
Category Industrial Technology> Chemical Industry> Portland Industrial> Industrial Refractories> Refractory Products> sandblasting abrasive refractories
Keywords unshaped refractory recycling technology development and production of iron and steel industry equipment and more varieties of material resources
Engaged in the production of means of social wealth of human activities and processes, including material wealth and spiritual wealth creation and people's own fertility. Also known as social production. Narrow sense refers only to create material wealth producing activities and processes.

Silicon carbide refractories explanation

Studied the clay bonded black silicon carbide refractories performance. SiC sintered at 1 500 ℃ preparation containing 20% -60% SiC , the clay clinker and clay compacts . Analysis of the sintered compacts of physical, mechanical and fire-resistant properties, and discusses changes in phase composition . Containing 20% SiC and 40% SiC refractory material having a certain load at a high density , high refractoriness , and has good corrosion resistance , is often used in furnace lining . In the ceramic industry, with 40% SiC and 60% SiC refractories , as one of the high content of SiC , under certain load has good thermal shock resistance , oxidation resistance and refractoriness , it is often used as kiln burning tank cars and use .
Refractories Refractoriness of not less than 1580 ℃ for a class of inorganic non-metallic materials . Refractoriness is the refractory cone specimen in the absence of load cases, resistance to high temperature without melting down the softening temperature in Celsius . Sic Refractory materials are widely used in metallurgy industry , chemical industry , petroleum, machinery manufacturing, silicates , power , etc., the largest amount in the metallurgical industry , accounting for 50 % to 60% of total production.
Statistical data as a processing methods and techniques in the refractory industry has been widely used. Take it to the next production of refractories and refractory good run important decisions for the smooth conduct of refractories acceptance sampling for scientific refractory to draw final conclusions , made ​​an indelible contribution.

Rare earth application in aluminum construction profiles

1, the rare earth application in aluminum powders construction profiles
In a typical civil construction in 6063 aluminum alloy profiles, add the content of rare earth range with 0.17% ~ 0.25% advisable, too many to join can have adverse effects on various performance instead. Rare earth on the mechanical property of 6063 aluminium alloy, the processing performance had a significant improvement in the function, after deformation profiles tensile strength can be increased by 5% ~ 10%, and hardness increased by 8% or so, elongation is improved. And can reduce rod extrusion temperature and improve extrusion speed. The study also found that after adding the rare earth elements 6063 Alumina Oxides ation coloring, film thickness, film can obviously increase the hardness and gloss, and improved the corrosion of acid, alkali and salt. All in all, 6063 aluminum after adding suitable amount of rare earth, thus refine microstructure, colour and lustre is uniform, beautiful, durable, deeply user welcome.
2, rare earth application in aluminium alloy wire netting
Rare earth aluminium alloy window screening, in strength, corrosion resistance, brightness, drafty, processability and cost, etc., are better than that of the same type without rare earth aluminium alloy wire netting, so for a wide range of applications. AnLiu window screen factory, LuJiang piston factory, for example, such as the production of rare earth aluminium alloy window screening, has been popular at home and abroad.

Rare earth application in aluminium alloy

Rare earth is effective additives in metallurgical industry, rare earth metal has the very high chemical activity, low potential and special black silicon carbides shell structure, almost can react with all elements. Rare earth resources in China is very rich, complete varieties, good quality, wide distribution, mining and convenient. Has proven reserves of rare earths, of t, accounting for 80% of the world's reserves, the world in the first place. In recent years,
Rare earths in metallurgy, machinery, petrochemical industry, electronic, atomic energy, medical, agriculture, aviation and defense Brown Corundum and other fields has been widely used. Rare earth started relatively late in the application of aluminum and its alloys, abroad began in the 1930 s, China began in ShangShi 60 s, but develops very fast, especially in the role of aluminum and its alloys and applied research has achieved obvious effect. This is mainly concentrated in the silicon al-si casting alloy, aluminum and magnesium (zinc) deformation aluminium alloy, aluminium alloy wire and piston alloy, etc. The influence of rare earth on aluminium and its alloy regularity and mechanism research has made some progress.

Aluminum oxide cleaning liquid

The used motor shell is very difficult to clean
Oil pollution situation is more complex
May also with dirt and dust
Going to the Alumina Oxides layer is not black cannot use hydrochloric acid, can only use ultrasonic cleaner and cleaner
I come into contact with a similar situation
For your reference
1, automatic ultrasonic cleaning line
High pressure spraying and aluminum cleaner (removal of workpiece surface soil, and heavy dirt)
Ultrasonic aluminum cleaner (thoroughly remove the workpiece surface oil pollution)
Ultrasonic aluminum powder oxide cleaner (removal of oxide layer)
Rinse (if there is oil plus an ultrasonic aluminum cleaner process)
Rinse and drying
2, manual cleaning and ultrasonic oxidation layer
In an aluminum cleaner first
Artificial scrub (using aluminum cleaner, remove dust dirt oil dirties, instead of high pressure spray)
Ultrasonic cleaner to remove oxide aluminum oxide layer
Rinse (if there is oil plus a scrub)

Garnet evaluation of choose and buy

Assessment and the choose and buy of garnet in color, transparency, is based on the particle size. The standard requirement of gem grade garnet sand: transparency is good, bright color, particle size greater than 5 mm. Emerald green garnet is very popular in the international gem market, pure and flawless, color bright, glittering and translucent get rid of the emerald green garnet value is very high. Emerald chrome vanadium aluminum garnet (also known as sand fry stone) value is very high, good quality can be compared with emerald. Red and orange red garnet is also very precious, orange orange garnet (also called spessartine) price increases rapidly in recent years.
Garnet is one of the high-grade gem, including green gemstone belongs to the rare species. Variety is more, pure color, transparent purple tooth of the market. Its refractive index is high, strong luster, color diversity of beauty, is a popular gem varieties. Many countries in the world dental purple as the "January birthstone, symbol of loyalty, friendship, and chastity. Westerners believe that purple tooth wu has the save people's lives or magical effect; In the Middle East, purple tooth wu were selected as royal tribute.
Assessment and the choose and buy of garnet in color, transparency, is based on the particle size. The standard requirement of gem grade garnet: transparency is good, bright color, particle size greater than 5 mm. In the international gem market, pure and flawless, bright color, glittering and translucent get rid of the garnet value is very high. Emerald chrome vanadium buy brown fused alumina garnet highest value, high quality can be compared with emerald. Red, orange red garnet is also very valuable. Purple tooth wu is now one of the more common low-standard gems. Variety is more, pure color, transparent purple tooth of the market. Its refractive index is high, strong luster, color diversity of beauty, is a popular gem varieties. Many countries in the world dental purple as the "January birthstone, symbol of loyalty, friendship, and chastity. Westerners believe that purple tooth wu has the save people's lives or magical effect; In the Middle East, purple tooth wu were selected as royal tribute. Geological museum of China, with an orange red spessartine big crystal, weighing 1397 carats, which are found in xinjiang. By the national museum of natural history of the world's best a brown yellow transparent cinnamon stone grossular (iron), is a carving exquisite Christ's head, weighs 61.5 carat, is priceless.
Garnet imitation goods is few, very easily, respectively.
1, if the garnet color ultra bright transparent, if the price is very attractive, go easy.
2, the cotton impurities, garnet outside have black spots, ice crack very easily.
3, garnet heavier than individual crystal, measure under in your hands, if is lighter than powder, be careful.
4, garnet contrast is exquisite, appearance, feel is very slippery, it feels very comfortable oil feeling ~ not powder "glass".
5, garnet, strong luster, look have metal feeling that bright light have a hazy feeling, it is particularly obvious on the nib.

How much is the density of corundum?

Density is divided into two kinds of Brown Corundum is called, one corundum bulk density, particle density, the second is Brown Corundums.

Bulk density of 1.53 ~ 1.99g/cm3, abrasives and abrasive particle bulk density, particle size composition, species, particle shape and other factors are related, in general, coarse-grained than fine-grained abrasive abrasive bulk density, particle size of the abrasive mix Bulk density is greater than a single particle density.

Particle density of 3.95 ~ 4.0/cm3, the silicon carbide abrasive particle density refers to the unit volume (excluding the volume of open porosity) contained within the abrasive mass

Describes how to strengthen corundum production environment

Brown Corundum in the production process have a good production environment , so that we can produce a good product, following a brief look at strengthening the production environment corundum What?

Conventional aluminum oxide abrasive machining process of exercise and ordinary have dust pollution, water pollution, air pollution and noise pollution, echoing national calls , protect the environment, the current management of these enterprises has begun to pollute . Dust Disposal : You can use active anti- pulse bag and cartridge filter to dispose of machining processes occurring dust pollution of the environment . This method is still present the best selection of the dust disposal .
Water Pollution Treatment: Alignment washing Alumina Abrasive water pollution , we first use of zero-emission to dispose of the water cycle ; pickling abrasive water pollution , we deal with a high temperature to replace after pickling pickling process completely dispose of water pollution , after a multi- purified water , cleaning water can be seen , the water, the precipitate is filtered in the sewage tank .

The main function of corundum

(1) Due to high temperature, corrosion resistance, high strength and other properties, it poured with steel sliding gate, smelting rare metals, special alloys, ceramics, blast furnace lining (walls and tubes); chemical containers, spark plugs, thermal oxidation resistant coating.
(2) Because of hardness, wear resistance, high strength characteristics, in chemical systems, used a variety of responses utensils and pipes, chemical pump parts; doing mechanical parts, various molds, such as wire drawing dies, extrusion die nozzle pencil, etc.; make tools, dies abrasive, bulletproof material, human joints, sealing ring mold.
(3) corundum insulation materials, such as lightweight corundum bricks, corundum hollow spheres and fiber products, widely used in various high-temperature kiln furnace wall and roof, both high temperature insulation. Size sand corundum corundum block by artificial selection, using the roll, milling, processing Barmac other equipment, particle size by the F8-F325. Mainly used for polishing, grinding, industrial grinding, etc., can also according to customer requirements for washing, pickling and other processing methods to meet the different needs of customers.