Refractoriness: 1770< Refractoriness< 2000
Type: Graphite Crucible
Product DescriptionMaterial: High Pure GraphitePurity: 99.99%Molding Process: Compression MoldingApplication: It can melt gold, silver, platinum, and other precious metals, and other alloys Size (OD×OH) Outside Diameter(mm)Inner Diameter(mm)Outside Height(mm)Inner Height(mm)Capacity(ml)20×20 mm201420172.620×25 mm251425172.630×30 mm302230259.530×40 mm3022403512.530×60 mm302260552035×35 mm352535301435×45 mm35304540 35×120 mm35251201155040×40 mm403040352540×60 mm403060553845×80 mm453580757047×115 mm474111511214550×50 mm504050455050×55 mm504055505550×80 mm504080708550×100 mm50401009011060×60 mm6048605510065×80 mm6550807013565×100 mm65501009017070×70 mm7058706015575×80 mm7560807019575×100 mm75651009030080×30 mm806525308080×80 mm8065807021080×90 mm8065908025090×110 mm9070110100380100×100 mm1008010090450100×130 mm10080130120600135×120 mm1351101201101000Note: High purity graphite crucible only can be used in electric furnace Please don't use it in coke oil gas furnaceDetailed PhotosUse Method of CrucibleUse an appropriate base (same material and equivalent size). Allow the crucible to expand and contract. The furnace cover should not be pressed on the crucible. In the resistance furnace, the fiber blanket should not be tightly compressed onto the crucible. The lining must be repaired and made as concentric as possible, which will prevent the flame in the flame heating furnace from deflection and impact on the crucible to ensure correct melting.Preheating and maintenance (furnace temperature)> Preheat for 3 hours at a constant temperature at 200 degrees; > Preheat at a constant temperature of 700 degrees for 2 hours; > Preheat at a constant temperature of 900 degrees for 1 hour; > Shut down the furnace to cool the crucible to no redness;> Then the temperature is raised to the normal aluminum melting/feeding temperature and the feeding is added in a vertical direction of 90 degrees.Notes of operating crucibles> The crucible should be stocked in the dry situation;> Carry the crucible lightly;> Warm the crucible in the drying machine or near the furnace. The warming temperature should be up to 500ºC;> The crucible should be put under the furnace month flat;> When put the metal into the crucible, you should take the crucible capacity as your reference. If the crucible is too full, it will be damaged by expansion;> The clamps shape need as that of crucible. Avoid the concentrate stressed destroy of the crucible;> Clean the crucible regularly and lightly;> The crucible should be put in the center of the furnace and leave some distance between the crucible and furnace;> Turn the crucible once in one week and this way can keep the service life;> The flame should not touch the crucible directly;> 24 hours constant use will make crucibles have longer service life;The smelt soup in the crucible should be cleared out when the furnace stop working, in order to avoid molten soup solidificating and will be expanded when fire to reheat, and affect the service life of crucible or even burst.> We suggest that about 2 months for crucible melting aluminum alloy (every week for melting copper alloy), hanging out to check whether there is something wrong in the surface, and clean furnace hearth as well as turn the crucible, this operation ishelpful to prolong the service life of crucible.Packaging & ShippingMethod of Crucible Storage1. The crucible must be stored in a dry environment, preferably on a wooden pallet, and kept well ventilated;2. The crucible can be stacked when placed upside down; 3. The crucible must not be exposed to a humid environment, otherwise the glaze layer of the crucible after absorbing moisture will easily peel off during the crucible preheating, which will cause the graphite to be oxidized, and the thermal conductivity of the crucible will gradually decrease, which will reduce the service life of the whole crucible.Company Profile Qingdao TTWY Manufacturing Co.,Ltd is a company specialized in producing casting equipment. It is located in Qingdao,a beautiful harbor city,which is convenient in transportation. Especially in graphite products, for expamle, the graphite electrode, graphite crucible, clay graphite crucible,Isostatic graphite crucible, etc; With high quality,reasonable price and attentive service the products produced by TTWY have wined trust from clients at home and aboard.FAQQ1: What information should I let you know if i want to get a quotation?A: The required material dimension (Thickness*Width*Length,diameter*length; if possible, please kindly supply us drawings).The required more information, such as Surface Condition, Tolerance Request, The Quantity, and other mechanical and technical details. If it is possible, please also provide the application of products, we will recommend the most suitable products with details for confirmation. Q2: How do you gurantee the quality of the products?A: Each step of production and finished products will be carried out inspection by QC department before storing in the warehouse. NG goods are not allowed in the completed goods warehouse. Q3: Can you guarantee the prompt delivery?A: Yes, when we get your inquiries, not only we will evaluate the more competitive price, but also we can get the most reasonable delivery time. So the prompt delivery can be guaranteed.Q4: What is your lead time? A : It usually needs about 15- 20 days after receiving the PO. Q5 : What is your payments terms?A : T/T, L/C, Western Union, etc., could be acceptable. Q6 : Can we visit your company?A : Yes, for sure, It's my pleasure to visit our company.Q7 : What is the shipping cost?A: The shipping cost is determined by the destination port, weight, packing size, total CBM of the products, we will try best to get the most reasonable shipping cost from the forwarders or express couriers to help you save more money.Q8 :What is the transportation way?A:If the Gross Weight ≤45kg, it's better by express such as TNT, DHL, FedEx,, etc. If the Gross Weight between 45kg to 100kg, by express or by air to your nearest airport can be both considered.If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the nearest port.Q9 :How service you can offer your clients? A:We provide presales service in various forms, for example, making investment budget,manufacturing planning,etc.so that customer make a reasonable plan with less cost. Moreover,we will also provide after sale service ,for example,free training about machine applications ect.