What is a silane coating used for?

When functionalising fused alumina, a very thin layer of a silane adsorption group is applied to the fused alumina particles. This organic surface coating has the effect of better embedding and increased scratch resistance in a melamine resin matrix, for example. Fused alumina has a high refractive index (n = 1.76). “Greying” would occur in transparent coatings, such as varnishes and melamine resin, without additional coating. The coating adjusts the refractive index to that of the varnish, thereby improving the latter’s transparency.

More Questions

Which method of transport would be better?

Generally, we suggest to make shipment by sea which costs less. We also can follow other transportation method you asked.

How long is your delivery time?

Around 30 working days after receiving prepayment.

What grit do i use for my finishing application?

If you are roughing, choose a 36 to 80 grit. If you are intermediate grinding, use 80 through 180 grit. If you are finishing, use 220 through 240 grit.

Do you have stock of abrasive media or refractory materials ?

Yeah, we have many stock .Just let us know the products you’d like or interested, then we can sent you the full information of the stock at once.

Why is corundum or silicon carbide used?

Corundum is the most frequently used abrasive. The purer the corundum, the harder it also is, which can be determined from the colour. The toughness can be increased by adding various metal oxides and by shortening the cooling

What is the warranty policy?

Firstly, We make sure the quality before the goods to be packed, if clients get the item with Substandard products, We have warranty for our clients,we will ship out the new replacements.

What is fepa and what does it do?

FEPA is the Federation of European Producers of Abrasives. Its mission is to develop and publish standards, documents and comprehensive safety instructions for the abrasive industry. Abrasive grain sizes are produced and sold according to the FEPA standard,

What is your sample policy?

We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.

What is the difference between aluminium oxide and white fused alumina?

Al2O3 alumina is the starting material of aluminium production, both of metallic aluminium and aluminium oxide. It is porous an has a large reactive surface.

What is your terms of delivery?

EXW, FOB, CFR, CIF, DDU.

What is your terms of payment?

T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages .before you pay the balance.

Can customer ask for the third party certification?

Yes, No problem, but Customer resposiable for the charge.

What applications are bonded abrasives used in?

Centerless grinding Cylindrical grinding Foundry snagging Internal grinding Mounted point grinding Portable grinding Surface grinding Toolroom grinding

How about your delivery time?

Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends .on the items and the quantity of your order.

Do you test all your goods before delivery?

Yes, we have 100% test before delivery

What is the specific weight?

The specific weight is the ratio of the weight of a body to its volume. The specific weight of corundum under normal conditions is 3.94 g/cm3.

How is fused alumina obtained?

Raw materials containing aluminium oxide are electrothermally melted at a reaction temperature of more than 2,000 °C to produce the various fused aluminas. Different starting materials are used depending on the desired type of fused alumina. For instance,

Which measurement methods are applied?

Dynamic image analysis (DIA) Static light scattering (SLS, also called laser diffraction) Screen analysis Impedance method Sedimentation

Can i get sample in free , how long is the time?

Yes, certainly. We will provide the sample is in free below 5 kgs for free, and the freight cost for free in 1kg. We could arrange the existing samples express delivery immediately. For any special samples requirement, it

What is corundum?

Corundum is a mineral from the category of oxides and hydroxides and is the most frequently used industrial mineral worldwide. It also occurs naturally as a gemstone (sapphire, emerald, ruby). Chemically corundum is aluminium oxide with the chemical

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