2014年3月7日星期五

Lime glass of black silicon carbide

Research H&X pink fused aluminium oxide glass surface modification
Abstract: This paper impregnated by processing liquid soda-lime-silica glass system modified its surface, using the study of changes in the surface structure of soda-lime-silica glass before and after surface modification systems. Studies show that: the soda lime silica glass in the surface modification system formed on the surface more than one organic molecular layer, thereby to explore the mechanism of soda-lime-silica glass surface modification system.
Keywords: soda-lime-silica glass system surface modification mechanism
Snapshot text:
With the H&X silica powder development of science and technology, people's living standards continue to improve, to improve people's lives requires increasingly high glassware, decorative glass for its elegant appearance attracted attention, and thus there is a decorative glass boom. There are several methods for preparing decorative glass many methods, such as chemical etching, sand blasting method, a vapor deposition method, a thermal spraying method or the like, and organic coatings.

2014年3月5日星期三

Activated calcium silicon

Activated alumina porous granular. For gas, water vapor, and some of the H&X china silicon carbide water has selective adsorption ability, and can be used as a catalyst and catalyst carrier and carrier of chromatographic analysis.
character
Porous granular.
use
For gas, water vapor, and some of the liquid water has selective adsorption ability. After the adsorption saturation can be in about 175-315 ℃ heating to remove water and resurrection. Adsorption and H&X calcium metal granules for many times. In addition to the used as a desiccant, but also from the pollution of the oxygen, hydrogen, carbon dioxide adsorption oil steam, gas, etc. And can be used as a catalyst and catalyst carrier and carrier of chromatographic analysis.
Preparation or source
Controlled by the temperature heating aluminum hydroxide to remove moisture.

2014年3月2日星期日

The salient features of calcium silicon

H&X buy brown fused alumina with high purity, good crystalline liquidity, low coefficient of linear expansion, corrosion-resistant characteristics. Dozens of refractory producers proven that the product has not detonate in the application process, not H&X silicon carbide abrasive powder, not crack characteristics. In particular, its cost is much higher than conventional corundum, but making the best of corundum refractory aggregate and filler.

2014年2月27日星期四

black silicon carbide three kinds of law

Synthesis
There are H&X brown aluminum oxide nitridation of silicon powder, silicon dioxide and silicon tetrachloride reduction method. In large-scale industrial production, silica reduction method is more valued by the people. Reduction of silica silica powder 100 parts (by weight, hereinafter the same), mixed with 35 parts of carbon black, 100 parts of urea resin, and then 800 parts of water, 0.1 parts of aluminum oxide (as used in nuclear reactor), 1 part of oxalic acid H&X silica sand supplier parts of ammonium and nonionic surfactants (as a dispersant), for strong stirring, and aqueous ammonia was added with stirring to adjust the Ph of 9.0. Good slurry was spray-dried material, the resultant was dried in an electric furnace in a nitrogen atmosphere for 3 h at 1480 ℃ reduction nitridation reaction. Then restore the reaction product in. 720 ℃, the air carried off the carbon treatment, to obtain silicon nitride powder products.

2014年2月25日星期二

silicon carbide powder production in a more general question

Summary: Positive silicon carbide abrasive sinister waste generated during the H&X buy silica process is the production of a more widespread problem, the extent of the problem due to the existence of the plant production conditions and the stability of the firing process varies. According to incomplete statistics, sinister waste accounted for 0.04 to 2.60 percent of total production abrasive. But domestic causes silicon carbide abrasive black H&X silicon carbide manufacturers is still lack of systematic research, while the black heart of the matter and its causes are caused by the need for discussion.
Keywords: silicon carbide abrasive waste firing process sinister production conditions roasting process binders total grains

2014年2月20日星期四

Scope natural corundum emery

Emery Scope:, warehouses, airports, docks, parking lots, metal works, electrical H&X white fused alumina supplier, heavy machinery plants, garages, warehouse-style shopping malls and other ground.
High quality silicon carbide abrasive blasting for raw materials using modern novel and unique technology refined. RS abrasive blasting abrasive short time, high efficiency, effectiveness, and low cost characteristics. The product hardness, high toughness, good self-sharpening, sand consumption is low and can be recycled use, good finish grinding pieces; and chemical composition and stability, wear resistance, acid and alkali. The shell-shaped H&X silicon carbide suppliers abrasive, sharp corners, edges and may form a new side of the blade in constant crushing grading, making it superior to other abrasive grinding capacity. In particular, it has high hardness, specific gravity, chemical stability and its unique self-sharpening, etc. become the preferred abrasive blasting process used; while sand-blasting to clean the workpiece is an ideal material for grinding and polishing.

2014年2月18日星期二

Silicon carbide refractories quality profile

Abstract: this paper introduces the properties of silicon carbide refractories H&X silicon carbide green, development and application of key words: silicon carbide refractories, properties, development and application of silicon carbide has high fire-resistant performance and chemical stability, so they are widely used in all kinds of refractory, but at present our country there is no complete the different content of the chemical analysis method of silicon carbide refractories. The analysis of the silicon carbide refractories quality projects generally have: free carbon, silica, silicon carbide, free silicon, ferric oxide, alumina. 1. The free carbon analysis free carbon has three methods, namely burning weight method, volumetric method, gas weight method. Burning weight method is applicable only to pure silicon carbide sample, organic and crystallization water and H&X garnet abrasive volatile nature of the refractory materials do not apply this method to determine; Gas volumetric method due to the fast analysis speed, high precision, simple operation, the most commonly used; Gas weight method because the test time is long, the accuracy is not high, not commonly used, but this method can extend the time of sample decomposition, at the same time, the carbon dioxide absorbed dose is larger, so it is suitable for the determination of silicon carbide refractories quality of high carbon refractory. 2. Analysis of silicon carbide silicon carbide has the direct method and indirect method. The indirect method is divided into determination of carbon in silicon carbide to conversion and determination of silicon in silicon carbide to conversion two kinds big. The indirect method to measure silicon low requirement to the instrument, conversion coefficient is small, but the test time is long, complex operation, not easy to master, carbon measurement method is rapid, simple, less interference, wide applicable scope, precision demand is high, but the instrument scaling factor. Commonly used gas volumetric method and weight method and infrared absorption method to measure carbon gases.