Refractory Graphite Clay Melting Crucible¹

Product Description look at here Please allow me to introduce our company and our products. Product Description  Graphite crucible has good thermal conductivity and high temperature resistance. During high temperature use, the thermal expansion coefficient is small, and it has certain strain resistance to rapid heating and cooling. It has strong corrosion resistance to acid and alkaline solutions and has excellent chemical stability. Due to the above excellent properties, graphite crucibles are widely used in the smelting of alloy tool steel and the smelting of non-ferrous metals and their alloys in industrial sectors such as metallurgy, casting, machinery, and chemicals.Next, let's talk about the data of the product.Refractory (oC)≥1700Carbon content (%)≥45Apparent porosity (%)≤32Bulk density (g/cm3)≥1.72☆ There are many types of materials, which can be consulted according to your needs and technical indicators. We will provide you with product materials that meet your requirements. Detailed PhotosDo you know what to pay attention to when using graphite clay crucible?A.  It is easy to oxidize when used in high temperature and strong oxidizing atmosphere. Therefore, strong                     oxidizing atmosphere should be avoided when providing different pyrogens, otherwise the use function will be           reduced.B.  The crucible is easy to absorb moisture. It is strictly forbidden to get damp during transportation, village and             use, otherwise it will burst when it is preheated in the furnace.     If it gets damp, the temperature should be gradually raised while drying before putting it in the oven, and the             temperature should not exceed 500oC.C. The crucible is fragile. During transportation, avoid dropping, bumping, towing, dragging, rolling, and prying with       hard objects to avoid cracks.D. The crucible should be checked for cracks, voids and other defects before placing it in the furnace.E.  When adding materials, do not stuff it too tightly and do not leave a cold bottom to avoid expansion and                    cracking of the crucible after heating.F.  The crucible is a ceramic product. There are a number of pores in the crucible wall, which are easy to absorb           moisture. Therefore, before using the crucible without adding materials, the crucible must be preheated to                ensure that no moisture remains in the crucible wall: it must be placed at a warm temperature. The furnace                should be baked for more than 24 hours. During this period, the crucible should be rotated several times to allow      it to be heated evenly and remove the moisture in the crucible wall (or place an appropriate amount of firewood       in the crucible and burn it for about 3 hours to achieve the preheating effect). This is to prevent the crucible from       heating up too quickly, causing thermal expansion of the crucible, causing the bottom to fall off, delaminate or          burst. G. Note: Moisture generally evaporates faster at 75~100 degrees, so the temperature rise should be slow at this          temperature; after 2 hours, preheat the crucible to 150~200 degrees and keep it warm for one hour, and then           increase the temperature by 150 degrees every hour. Since the crucible wall will undergo rapid oxidation in the         temperature range of 315 to 650 degrees, oxidation will not only shorten the life of the crucible, but also affect its       performance due to reduced thermal conductivity, so the crucible does not need to stay in this temperature range     for too long.H. After the crucible has been preheated, it usually does not need to be preheated again if it is used continuously,        unless the crucible is exposed to a humid environment again.I.  After the crucible is preheated, the operator needs to quickly raise the temperature to 850~950 degrees without       adding materials, keep it warm for half an hour, then lower it to the normal operating temperature, and then add         materials. (Heating the crucible to a temperature higher than the normal operating temperature will extend the           service life of the crucible.) Usually heating the crucible to 815~930 degrees will help protect the glaze of the             crucible. If possible, this high temperature heating can be done every week Do it all once. Company Profile SHANDONG SANJING INDUSTRY AND TRADE CO., LTD1.Specialized in making graphite products. 2.Main products:  graphite block, graphite plate, graphite rod, graphite tube, graphite mold, graphite crucible, graphite rotor&shaft, graphite sealing, graphite felt, carbon vane,Refractory bricks, castables ect.3.Workshops: NC machining center, NC processing line,  automatic feed proportioning system, hydraulic press, molding and control center, baking furnace, longitudinal graphitizing furnace, ect.  Why Choose Us* Experienced engineering and technical personnel* Supply the best cost-efficiency solution* High quality product and high-level service FAQQI: Do you have catalogue? A: Yes dear.Pls contact us to get the E-catalogue by email or WhatsAPP or Wechat.Q2: Do you have pictures for this product? A: Yes dear. We can offer you different postion pictures of the goods for your reference.Q3:What the parts quality?A: It's with IS9001 certificate and we do 100% test the goods before the shipment.Q4: What's the MOQ? A:1Ton(graphiteelectrode)2piece(graphiteplate/block).Q5: What's the Delivery Time?A:It's about 15-30 days afer get the payment.but Pls check with our sales for the stock in advance.Q6: Can we test sample first? A: Yes dear. but need to pay the sample cost and delivery cost.

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