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.

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.

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.

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.

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.

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.