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What is the basic performance of the crucible
Release timeú║2017.05.13 News sourceú║Jiangxi Zhongyu New Material Technology Co.,Ltd. Browsing numberú║
 

Crucible is used very refractory materials (such as clay, graphite, kaolin, quartz or difficult to melt metallic iron, etc.) or the pot made of vessels.Crucible for a bowl of ceramic deep container.When there is a solid with high heat, must use the crucible.Because it can withstand the high temperature more than glass.Crucible will often when using inclined on the crucible crucible cover, jump out to prevent heat content, and let the air oxidation reaction can free access for may.At the bottom of the crucible because of its small, generally need to stand in the mud on the triangle to directly heated by fire.Crucible in iron triangle frame is put or inclined put all can, depending on the experiment needs to be placed.Crucible heated not immediately put it in cold metal table, in order to avoid it because of the rapid cooling and rupture.

Porcelain crucible

1. Can be used to heat 1200 degrees

2. Suitable for K2S2O7 acid such as melting sample.

3. Generally cannot be used with NaOH, Na2O2, Na2CO3 alkaline substance, such as flux melting, in order to avoid corrosion porcelain crucible.Porcelain crucible can't contact with hydrofluoric acid.

4. Porcelain crucible is generally available boil dilute hydrochloric acid washing.

Corundum crucible

1. The corundum crucible is composed of porous fused alumina, strong and refractory.2. Corundum crucible is suitable for some weak alkaline material such as using anhydrous Na2C03 flux melting sample, not suitable for use 202, NaOH and Na, strong alkali and acid as solvent (such as K2S 207) melting sample.Another: Japanese, the crucible (RUTUBO) means \"dilemma\", cartoon works and translation \"whirlpool\" or \"mud\".

Graphite crucible

The body of the graphite crucible material, is a crystalline form of natural graphite.Therefore it keeps its original natural graphite of various physical and chemical properties.Graphite crucible with good thermal conductivity and high temperature resistance, at high temperature in use process, small thermal expansion coefficient, the thermal shock, quenching has certain strain resistance.Of acid and alkaline solution of strong corrosion resistance, excellent chemical stability.Graphite crucible, because has more excellent performance, so in metallurgy, casting, machinery, chemical and other industries, has been widely used in alloy tool steel smelting and smelting of nonferrous metals and their alloys.And has a good technical and economic effect.

Silicon carbide crucible

Silicon carbide crucible for a bowl of ceramic deep container.When there is a solid with high heat, must use the crucible.Because it can withstand the high temperature more than glass.Crucible when using molten things usually don't put too full, in order to prevent the heat content jump out, and let the air oxidation reaction can free access for may.At the bottom of the crucible because of its small, generally need to stand in the mud on the triangle to directly heated by fire.Crucible in iron triangle frame is put or inclined put all can, depending on the experiment needs to be placed.Crucible heated not immediately put it in cold metal table, in order to avoid it because of the rapid cooling and rupture.Nor on the wooden surface immediately, in order to avoid burning the desktop or start a fire.The right approach for lien in iron triangle frame natural cooling, online or on asbestos make its cooling slowly.Access of the crucible, please read the crucible tongs.Supply of related information by dacheng county kui big silicon carbide crucible crucible factory released silicon carbide graphite crucible adopted the latest international technology, such as static pressure molding in and strict quality inspection system, advanced refractory raw materials, high-tech formula to develop a new generation of high quality silicon carbide crucible, this product has a large volume density, high temperature resistant, fast heat transfer and resistance to acid and alkali erosion, high temperature strength, oxidation resistance is high, service life is 3 times of clay graphite crucible.

Platinum crucible

Is made of metal platinum, differential thermal analyzer of spare parts, used for heating nonmetal material.Such as;The glass fiber production, glass drawing, etc.

Nickel crucible

Nickel and melting point of 1455 degrees Celsius, with nickel sample crucible melting temperature should not exceed 700 íŠ, because in the high temperature, nickel susceptible to oxidation.Nickel, alkali resistance and erosion resistance is strong, so the nickel crucible is often used in molten iron alloy, slag, clay, fire-proof material, etc.Nickel crucible is suitable for NaOH, Na2O2, NaCO3 and contains the basic flux - KNO3 molten sample, cannot use e-isomer, NaHSO4, K2S2O7 or Na2S2O7 and sour alkali sulphide flux melting sample.Molten Al, zinc, Pb, Sn, Hg and other metal salts, can make the nickel crucible brittle.Nickel precipitation crucible cannot be used for the burn.Borax in nickel crucible melting.Nickel crucible often contains trace amounts of chromium, when using, should pay attention to.New nickel crucible should be in the muffle furnace burning into the violet, to remove surface oil pollution, then use 1 (volume ratio) hydrochloric acid to boil for a minute, and then rinse clean with water.

 
 
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