2018年4月27日星期五

Introduction of Fused Cast AZS Brick

The Fused Cast AZS Bricks consists of eutectoids and glassy phases of corundum and zirconium aragonite. From the phase theory, it is the eutectoid of the corundum and zirconium phases, and the glass phase is filled between their crystals.

The Fused Cast AZS Bricks, also known as fused zirconia corundum brick, is AZS. It is based on the three chemical components of the Al2O3-Zr02-Sio2 ternary phase diagram, arranged in order of their contents, Al2O3 takes A, Zr02 takes Z, Sio2 take S, the national standard uses this abbreviation, such as No. 33 cast zirconia corundum brick, abbreviated as AZS-33 #, 36 cast zirconia corundum brick, abbreviated as AZS-36 #, 41 cast zirconia corundum brick, abbreviated AZS- 41#.



The Fused Cast AZS Bricks manufacturing process combines the selected zircon sand and industrial alumina powder in a 1:1 ratio, plus a small amount of NaZO (added as sodium carbonate), B20: (added as boric acid or borax) flux, mixed Uniform, after being melted at 1900~2000°C and casted, Zr0233% fused cast bricks can be obtained. On this basis, using partially desiliconized zircon sand as raw material, 36%~41% fused cast bricks containing ZrO2 can be obtained.

Fused zirconia corundum brick is mainly used in the glass industrial tank furnace, glass electric furnace, steel industry slides, brewing alkali industry furnaces and other high temperature resistant erosion resistant kiln refractory materials.

2018年4月26日星期四

Tempering Furnace - The best Tempering Kilns from Luwei Tempering Furnaces.

Description of Tempering Furnace

Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys. Tempering is usually performed after hardening, to reduce some of the excess hardness, and is done by heating the metal to some temperature below the critical point for a certain period of time, then allowing it to cool in still air.

Tempering Furnaces are batch type units equipped with recirculating fan(s) and gas-fired or electric heating systems. Tempering Furnaces are designed for tempering or stress relieving in air, nitrogen, argon or hydrogen atmospheres. Tempering Furnaces are used for a variety of heat treating applications including those requiring inert atmospheres.



Features of Tempering Furnace

Tempering Furnaces for both low and high tempering processes. These Tempering Furnaces provide a reliable platform for acquiring various mechanical properties during tempering and reduce the residual stresses during the stress relieving process.

2018年4月25日星期三

Brown Fused Alumina by roller crushing

Brown Fused Alumina by roller crushing is processed through the processing of the roller production line, and the bulk density is lower than the ball-milled sand, but the purity is high, the self-sharpness is strong, the toughness is good, the magnetic substance content is extremely low, and the abrasive grinding tool made of the same is used. Sharp cutting, low heat generation rate, high grinding ratio, and less adhesion during use, the sintered abrasive tool has the characteristics of considerable dark blue after burning, no network cracks, and no rust. Applicable to the manufacture of ceramics, resin, high-abrasive abrasives, and grinding, polishing and so on.

Brown Fused Alumina by roller crushing has high purity, high self-sharpness, good toughness, and extremely low magnetic material content. Grinding tools made from Brown Fused Alumina by roller crushing have sharp grinding, low heat generation rate, high grinding ratio, and less adhesion when used; Density is lower than ball-milled plastic sand, but it has high purity, strong self-sharpness and good toughness.



Why Choose Yu Shi Brown Fused Alumina by roller crushing?

1, high-quality grinding grade alumina
Workers hand-picked high-quality ground-grade alumina for smelting, with Al2O3 content as high as 85%, ensuring quality from the source!

2, secondary refining:
All brown corundum plus secondary refining for 3 hours outside the industry standard smelting time improves product quality!

3, strict classification
The brown corundum blocks after smelting are screened and graded by workers manually to ensure that each batch is a quality product!

4, high-strength magnetic separator
The industry is generally 2 5000 Gaussian magnetic separator, we use 5 13,000 Gaussian magnetic separator to remove ferrosilicon impurities!

5. Corporate strength
The company has operated more than 20 years and the factory has invested over 100 million yuan. Choose us equal to choose quality!

2018年4月23日星期一

Brown Fused Alumina P Grains

Brown Fused Alumina for coated abrasives is produced under well water-washing and carefully sieving again on the basis of FEPA Standard. The smelting method of brown corundum P grains is divided into two types: fixed type (separation furnace) and dumping type. The smelting method of brown fused alumina has better texture and energy saving.



Brown Fused Alumina P Grains is the kind of non-calcined Brown Fused Alumina Oxide grain for coated abrasives application, the Brown Fused Alumina P Grains shape is very sharp, high abrasive ability and good self-sharpening. Brown Fused Alumina P Grains is used for producing all kinds of coated abrasives products, such as sand paper, cloth, belts, and so on.

Brown Fused Alumina P Grains is based on the standard of Brown Fused Alumina F Grains, and processed by further separating and washing process. This brown corundum P sand is not calcined at high temperatures and has a sharp shape, high grinding capacity and good self-sharpening properties.

2018年4月22日星期日

Vacuum Hardening Furnace - The best Vacuum Hardening Kilns from Luwei Vacuum Hardening Furnace.

Description of Vacuum Hardening Furnace

With the rich industry experience and knowledge, we are able to manufacture and supply a wide range of Vacuum Hardening Furnaces. The offered Vacuum Hardening Furnaces are made by using high quality material in compliance with all the national and international quality standards and norms and are durable in nature and sturdily constructed.

Hardening is a typical heat treatment process combining heating to specific temperatures (mostly above 900 °C) and direct fast cooling or quenching of the part. The requirements are selected to change the materials’ structure partially or completely into martensite.



Features of Vacuum Hardening Furnace

Vacuum Hardening Furnace can be used on determination, metallographic laboratory for analysis, research, or industrial and mining enterprises for hig and metal work in the air for normalizing, annealing, hardening, for the Laboratory for universities, scientific research and environmental protection unit.

2018年4月19日星期四

Vacuum Heat Treatment Furnace - The best Vacuum Heat Treatment Kilns from Luwei Vacuum Furnace.

Description of Vacuum Heat Treatment Furnace

A vacuum furnace is a type of furnace in which the product in the furnace is surrounded by a vacuum during processing. The absence of air or other gases prevents oxidation, heat loss from the product through convection, and removes a source of contamination.

Vacuum Technology is the Basis for Process Innovation in Heat Treatment. Vacuum Heat Treatment Furnace is the process in which metallic/steel parts are exposed completely or partially to time-temperature sequences in order to change the mechanical and/or corrosion properties. Modern, precise, energy efficient and ecological vacuum heat treatment equipment with guaranteed technology.



Features of Vacuum Heat Treatment Furnace

Vacuum Heat Treatment Furnace 1700°C can be used for numerous purposes because they apply vacuum as well as inert atmospheres. This main application is debinding and subsequent sintering of ceramics or powder metallurgical parts.

2018年4月18日星期三

Tilting Furnace Brown Fused Alumina

In order to meet the demands of the refractory industry, we independently develop and produce the Tilting Furnace Brown Fused Alumina which is adopted by modern unique technology of smelting and processing under the universities and research institutes' support.

Tilting Furnace Brown Fused Alumina is characterized by high purity, good crystal, strong fluidity, low coefficient of linear expansion, good corrosion-resistance and so on. After practical tests by dozens of refractory manufacturers. Tilting Furnace Brown Fused Alumina can't burst, pulverise and craze in using course. In particular, Tilting Furnace Brown Fused Alumina performance-cost ratio is much higher than traditional Brown Fused Alumina, and Tilting Furnace Brown Fused Alumina become the best aggregate and padding of Brown Fused Alumina refractory materials.

2018年4月17日星期二

Annealing Furnace - The best Annealing Oven from Luwei Annealing Furnaces.

Description of Annealing Furnace
Annealing Furnace is a process used in semiconductor device fabrication which consist of heating multiple semiconductor wafers in order to affect their electrical properties. Heat treatments are designed for different effects. Annealing Furnaces may be integrated into other furnace processing steps, such as oxidations, or may be processed on their own. Furnace anneals are performed by equipment especially built to heat semiconductor wafers. Furnaces are capable of processing lots of wafers at a time but each process can last between several hours and a day.



Annealing Furance designs can be stationary, moving or continous, are a few examples. Annealing is applied to both ferrous and non-ferrous metals, and is intended to reduce the strength and hardness of the product while increasing the ductility. Annealing Furnace features heating elements in ceramic fibre insulation, providing a maximum temperature of 1100°C in the furnace’s vacuum tight chamber.

Features of Annealing Furnace
An Annealing Furnace is a piece of equipment used to heat a material at very high temperatures, to change its hardness and strength properties. Annealing is commonly associated with the manufacture of steel, to relieve internal stresses that may lead to failure in service and to produce a more uniform, or homogeneous, internal structure. 1200°C degree 1600°C degree metal or ceramics heat treatment furnace Annealing Furnace is welded by steel and profiled steel; furnace chamber is ceramic fiber and high quality electric resistance wire/SiC heaters, which can save 40% energy than brick furnace chamber. Car Bottom Furnace is mainly used for annealing, normalizing and stress relieving of bars and tubes, forgings, large weldments and castings.

Brown Fused Alumina Sandblasting

Brown Fused Alumina is fused in the electric-arc furnace under the high temperature of above 2250°C with high quality abrasive bauxite as raw material and matched by the carbon material and scrap iron. The degree of refractory is more than 1850°C.

Sand blasting is an operation method that uses compressed air to spray brown corundum sand through the blasting equipment at a high speed to the surface of the workpiece to be processed to increase its roughness, thereby enhancing the adhesion between the workpiece and the paint.

Brown Fused Alumina for Sandblasting is mainly used for various material workpieces to decontaminate, derusting, prevent corroslon, remove oxide skin, light-decorate, process pattern effect and so on. About Brown Fused Alumina for Sandblasting there are three factors the decide the effect of Brown Fused Alumina for sandblasting:
1. The grinding ability: the higher grinding ability, the better for sandblasting.
2. The bulk density: the higher bulk density, the better for sandblasting.
3. The dust: the lower dust, the better for sandblasting.

Brown fused alumina sandblasting features high grinding force, high bulk density and low dust. Brown Fused Alumina with high bulk density and air cleaned, the quality of this kind of Brown Fused Alumina is very excellent for sandblasting.

2018年4月12日星期四

Brown Fused Alumina High/Middle Bulk Density Air Cleaned Grains

Brown Fused Alumina is made of high-quality bauxite as raw material, anthracite and iron filings. It is made by arc smelting at 2000°C or higher temperature. It is crushed and plasticized by self-grinding machine, magnetically deferred to iron, sieved into various sizes, and its texture is dense and hard. High, spherical pellets, suitable for the production of ceramic, high-resistance abrasive resin and grinding, polishing, sandblasting, precision casting, etc., can also be used to manufacture high-grade refractories.

There are two ways to improve product cleanliness:
The first is to use high-power dry cleaning machines to clean F54 crude products. The machine consists of a blower and an induced draft fan. When the material enters the dry-cleaning machine, the blower is adjusted to the proper air volume to allow the material to jump up and down in the machine room, and the fine dust in the product is separated from the wood chips in the material by friction and collision between the materials; The rear induced draft fan introduces dust and wood chips with relatively light material and relatively small particles into the dust removal equipment. The cleanliness reaches over 98%.



Second, the adjustment of dry-cleaning equipment is mainly used to produce products with less than F60. Because F60 is a fine-grained product, air heating is used to eliminate static electricity and moisture to ensure the quality of dry-clean abrasive products.



The use of Brown Fused Alumina:
1. Sandblasting - abrasive medium hardness, high packing density, no free silica, a large specific gravity, good toughness, widely used in aluminum, copper profile glass, washed denim precision molds and other fields;

2. Free grinding - Grinding grade abrasives, used in kinescopes, optical glass, monocrystalline silicon, lenses, watches with glass, crystal glass, jade and other fields;

3. Resin Abrasives - Suitable for abrasives, good hardness, toughness, suitable particle cross-section type and edge retention, applied to resin abrasives, ideal results;

4. Coated Abrasives - Abrasives are raw materials for sandpaper, gauze and other manufacturers;

5. Functional fillers - mainly used for automotive brake parts, special tires, special construction products and other collar can be used as construction of highway pavement, airstrips, piers, parking lots, industrial floors, sports grounds and other wear-resistant materials;

6. Filter media - is a new type of abrasive applications, the use of granular abrasive as the bottom media of the filter bed, purification of drinking water or wastewater, is a new type of water filter material at home and abroad, especially for non-ferrous metal processing;

7.Hydraulic cutting——It is a new type, environmental protection and safe cutting method that uses abrasive as cutting medium and high-pressure hydraulic jets for basic cutting. It is applied to the cutting of petroleum (natural gas) pipelines, steel and other parts.

2018年4月11日星期三

Sintering Furnace - The best Sintering Oven from Luwei Sintering Kiln Manufacturer.

Description of Sintering Furnace
Sintering is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction. Sintering happens naturally in mineral deposits or as a manufacturing process used with metals, ceramics, plastics, and other materials. Luwei Furnace Company designs and builds Sintering Furnaces around our clients’ manufacturing needs – the time, temperature and atmosphere requirements for their specific product manufacturing process.

Sintering Furnaces is mainly for laboratory industrial and mining enterprises scientific research units for element analysis, and measured small size steel hardening, annealing, tempering of heat treatment for heatingfurnaces. Sintering Kilns can also be used as a metalceramic sintering dissolution and analysis of high heating use.



Features of Sintering Furnace
Sintering Furnaces is High purity alumina fiber insulation and Morgan materials brick PID automatic control via SCR (Silicon Controlled Rectifier), power control with phase angle fired current limiting resistor and 16 programmable segments for precise control of heating rate.

2018年4月10日星期二

Vice White Fused Alumina

Vice White Fused Alumina is developed on the basis of brown fused alumina smelting. The Vice White Fused Alumina can substitute compact Fused Alumina to make tapping launder castable refractory.

Vice White Fused Alumina can also substitute white fused alumina and tabular Alumina to make sliding plate, corundum bricks and abrasion-resistant castable etc. All of which have achieved the same effectiveness compare with usingcompact fused alumina and white fused alumina.



Vice White Fused Alumina has the hardness of White Fused Alumina, and it also has the toughness of brown corundum. It is used to replace the iron grate castable made from dense corundum, as well as the skateboards, corundum bricks, wear-resistant castables, etc. that are made by replacing white corundum and plate corundum. Acquire and use dense corundum, white corundum and other equivalent effects.

The Vice White Fused Alumina Segment sand, and Vice White Fused Alumina Powder have the characteristics of no bursting, no chalking, large stacking, and good fluidity during use, and can be widely used to produce a variety of shaped refractory products and corundum casting materials and other amorphous bulk materials and light fired corundum refractory products.

2018年4月8日星期日

Ceramic Roller Kilns - The best Ceramic Roller Kiln from Luwei Ceramic Roller Furnace.

Description of Ceramic Roller Kilns
Ceramic Roller Kilns for fast firing of wall and floor tiles have been used for nearly 25 years. In this type of kiln the products to be fired are transported through the kiln by means of rotating ceramic rollers. Ceramic Roller Kilns is manufactured using optimum grade raw material and sophisticated technology in synchronization with international standards. In order to ensure quality, the entire range is rigorously tested on various parameters by our quality controllers.



The Ceramic Roller Kilns offers the manufacturer a fuel efficient solution where cycles are fast and products require a very tight temperature uniformity. For special technical applications, Nutec Bickley have provided roller hearth kilns as an alternative to shuttle or tunnel kilns. Ceramics rollers are supplied in different materials (mullite or silicon carbide) depending on the application requirements.

Features of Ceramic Roller Kilns
The Ceramic Roller Kilns is mainly used in the production of ceramic tiles table dishware bone teaset pottery bowls ceramic gifts and other ceramic building materials. Ceramic Roller Kiln is continuous heating and work it is made by the rotation of the ceramic tube as the roller kiln vehicle the ceramic tiles or bricks materials in the kiln inner chamber. The rotation of the ceramic tube with high temperature(high-alumina)or SiC depending on the calcination temperature and ar driven by independent controller.

2018年4月7日星期六

Brown Fused Alumina Micro Powder

Brown Fused Alumina is made of high-quality bauxite as the main raw material, and it is made into various particle size products by adopting processing methods such as purification, impurity removal, crystallization, sorting, crushing, magnetic separation, and sieving in the high temperature above 2200°C of the arc smelting furnace.

Brown Fused Alumina Powder is made of natural bauxite as raw material, carbon (mainly coke) as reducing agent, and iron scrap is added as settling agent (clarifier) ​​to form ferrosilicon at the bottom of electric furnace.



Brown Fused Alumina Micro Powder is tan, generally Al2O3 ≥ 94.5%, SiO2 ≤ 3.5%, TiO2 ≤ 3.5%, Fe2O3 ≤ 1%. The mineral composition is dominated by α-Al2O3. The central part of the crystal shape is diamond-shaped, thick plate-shaped, and cracked particles. There are more silicon oxide and calcium oxide in the periphery and melt crystallize, showing a long plate shape and the most coarse grains. Slit platelets.

Since the impurities have not been completely removed, the brown fused alumina also contains secondary phases such as calcium hexaaluminate, calcium plagioclase, spinel, rutile, and glass phases, ferroalloys, and solid solutions. The color of Brown Fused Alumina depends to a large extent on the titanium oxide remaining in the product.

Brown Fused Alumina Micro Powder performance include High hardness, high strength, impact resistance, high temperature resistance, oxidation resistance, corrosion resistance, low creep, etc.

Brown Fused Alumina is mainly used as abrasive. In recent years, it has been used as the raw material for large and medium-sized blast furnace cast iron hook castables and cast iron aggregates and for the production of common corundum bricks (including high-alumina silicon carbide casts).

Brown Fused Alumina Micro Powder is suitable for making bonded and coated abrasive tools, wet or dry blasting, superprecision grinding and polishing, making high quality refractory materials, grinding carbon steel, alloy steel, malleable cast iron, hard bronze and semi-conductor materials.

2018年4月4日星期三

The role of Fused Cast AZS Bricks in Glass Furnaces

For a glass kiln, Fused Cast AZS Bricks effect in galss furnace is very important, in order to achieve the design life or to avoid contamination of the glass solution, a thorough understanding of the appearance quality and intrinsic quality of the fused cast bricks is required. we need to understand the performance of the fused cast azs bricks and the weak points of the fused cast bricks.



First, the appearance quality of Fused Cast AZS Bricks in Glass Furnaces, the pool wall part of the corner brick, kiln chopped brick, bubbling bricks, liquid flow brick is generally fused cast azs 41#. With the neighboring brick assembly gap to be strict requirements, the gap assembly to speed up the glass solution on the brick erosion, assembly The gap requirement is not more than 0.5mm. It is advisable that there is no shrinkage hole at the bottom of the brick. More than twelve per cubic meter of surface air holes above the ¢2mm are not allowed. The color of the brick body is yellowish and white, bubbling, and liquid flow bricks are not allowed. The presence of cracks does not allow the presence of flaws within 300 mm of the top of the pool wall section.

Second, the intrinsic quality of Fused Cast AZS Bricks in Glass Furnaces.
1. From the brick color to determine the impurities in the fused cast brick, or to determine whether the carbon content is large, the color of the large carbon brick will be green, this brick is strictly prohibited.
2. While a massive greening on the surface of the brick body, there must be iron blocks inside. The iron blocks come from the flat material in the production process or the iron and solder part of the exhaust gas falls off, and other factors. This imagined brick is also prohibited.
3. The glass phase contrast must be strictly controlled. When the glass phase exceeds the standard, the large amount of glass phase precipitated at high temperatures can reduce the service life of the furnace and contaminate the glass melt.

2018年4月2日星期一

Brown Fused Alumina Melt Film Precision Casting Sand

Brown fused alumina melt film precision casting sand is the latest corundum products self-developed by Yushi Company to meet the market demands. Based on the production of the brown fused alumina and with special technology, Brown fused alumina melt film precision casting sand is produced by the careful organization of the researchers.

The quality of Brown fused alumina melt film precision casting sand has reached the advanced level of similar foreign products through laboratory tests and production in practice of dozens of casting enterprises. And some performances of Brown fused alumina melt film precision casting sand can be adjusted or showcased according to the customers' requirement.

The Brown fused alumina melt film precision casting sand has high refractoriness, low thermal expansion coefficient, good thermal stability, strong air permeability and high intensity, easy to shell, high casting finish. It can substitute Zirconia sand (powder) its price is only half of zirconia sand (powder), and the recovery ratio is high as well.

Brown fused alumina melt film precision casting sand can be mainly applied to the melt films and silicasol technology of jewelry, handicrafts, stainless steel products, watches, glasses, aluminum die casting industries, and can be processed in line with the demands of the clients.



2018年4月1日星期日

Pusher Kilns - The best Pusher kiln from Luwei Ceramic Pusher kilns.

Description of Pusher Kilns
Pusher Kilns and tunnel kilns are ideal for processes requiring precise control of temperature and atmosphere, for those with longer residence times that require exact control of the heat up rate of the product (temperature profile), and those with a lower gas/solid reaction.



The Pusher Kiln has a hydraulic system that pushes load trays (ceramic or metal) through the kiln tunnel. The trays may push through various zones of temperature to meet a particular temperature profile. For larger load sizes, more than one tray may be pushed in at a time. When the trays reach the exit end of the kiln, they may be manually or automatically returned to the entrance end for reloading. As in the Car Kiln, the entire process can be automated to be safer and more efficient.

Features of Pusher Kilns
Pusher Kilns is mainly used in the production of ceramic tiles table dishware bone teaset pottery bowls ceramic gifts and other ceramic building materials. Pusher Kiln is continuous heating and work it is made by the rotation of the ceramic tube as the roller kiln vehicle the ceramic tiles or bricks materials in the kiln inner chamber.