What’s lead time for bulk order?
1)for 5~25 tons, it takes around 10~15days. 2)For 26~200 tons,20-40days We will try to deliver it with the promise of quality guarantee as soon as possible
Investment Shell Introduction
The following is the introduction to Investment Shell. Investment mold shell refers to the mold shell for investment casting, also known as wax loss casting, including wax pressing, wax trimming, tree formation, slurry dipping, wax melting, casting liquid metal, and post-treatment. When the mold is lost, the shell will be under the pressure of the increasing volume of molten mold material; During roasting and pouring, each part of the shell will produce mutually restrained and uneven expansion and contraction. Therefore, the metal may also have a high-temperature chemical reaction with the shell material. Therefore, the shell has specific performance requirements, such as low expansion rate and shrinkage rate, High mechanical strength, thermal shock resistance, fire resistance, and chemical stability at high temperatures, so the refractories used in investment casting are mainly quartz and fused alumina. Welcome to contact us to exchange what is Investment Shell meaning? and look forward to your information.
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.
What’s payment terms ?
Bank T/T, L/C at sight, Westunion.
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.
Do you test all your goods before delivery?
Yes, we have 100% test before delivery
Are you a manufacturer or trader ?
Yeah, We are the manufacturer of BFA, WFA, GC. Also,we had good business relationship with others abrasive media & refractory raw materials manufacturer . more over we have QC department which make strict inspection on goods quality, packing, so we can provide a stable and quick delivery of all the
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.
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 need max 7 days finished. Usually we send samples by TNT ,FEDEX,
Can you customized quality, size, package according to customer?
Yes, of course. The OEM is available. We will do the creation in your requirement and make ur image come true.
What is the refractive index of white fused alumina compared with that of glass?
The refractive index of fused alumina is approx. 1.76, whereas that of normal glass types is approx. 1.4. The closer the refractive indices are to each other, the more transparent the system (e.g. varnishes).
Can customer ask for the third party certification?
Yes, No problem, but Customer resposiable for the charge.
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.
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