Natural Graphite Powder 400mesh China Manufacturer

Natural Graphite Powder 400mesh China Manufacturer

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 20 m.t.

Supply Capability:: 5000 m.t./month

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FAQ

1.Price
We usually quote within 24 hours after getting your detailed requirements, like size, quantity etc.
If it is an urgent order, you can call us directly.
2. Samples
Yes, samples are available for you to convince yourself on the quality.
Samples delivery time will be about 3-10 days.
3.Lead time for mass production
The lead time is based on the quantity, for graphite products , apply Dual-use items license need about 15-20 working days.
4.Terms of delivery
We accept FOB, CFR, CIF, EXW, etc. You can choose the most convenient way for you. Besides that, we can also shipping by Air and Express.
5.Packaging
We are packed in 20kg or 25kg Per Bag, Ton Bag, or according to your requirements.
6.Notice
Please note that the price on made-in-china is a rough price. The actual price will depends on raw materials, exchange rate , your order quantity etcs. Hope to cooperate with you for long relations, Thank you !

Q:Why does the temperature rise when the graphite powder is turned on?: The presence of resistance, melting point at 3850 + 50 degrees C, graphite powder is a very sensitive chemical substances, in different circumstances, his resistivity will change, that is, his resistance value will change

Q:Method for identifying iron powder, aluminium powder and graphite powder: 1. aluminum powder is silver, black substance attract rest with a magnet that attracted iron, not be attracted to the graphite2. Add equal mass, such as concentration of dilute hydrochloric acid, the gas is fast aluminum powder, slow iron, and do not produce gas is graphite.

Q:Which shipping company can pick up the name of graphite? Graphite products are mainly exported to India, Italy and the United states!: The packing of graphite powder is usually ton bag and mother bag.The packing of the graphite blocks is usually packed in wooden cases, which will not pollute the hull. Our company is out of date and there is no shipping company saying it can not be answered.

Q:Why is there a range of electrode powder powder resistivity? The reasons for the high and low are not good.: Read millivolt values and sample height, calculated according to the formula P =UA/IL type resistivity. The resistivity of the conductor is in P, Omega - M; L for voltage measurement distance between two probes for m; A for the conductor cross-sectional area, m2; U, the voltage between two probes for the determination of voltage V; I the strength of the current flowing through the conductors, the resistivity of A. graphite is (8 ~ 13) * 10-6 (/m), high - low note inside magazines. For reference only!

Q:How to measure the conductivity of powdered graphite?: Voltammetric measurement of resistanceMethods: using precision small range measurement of electricity meter, multimeter resistance or contrast test you can use small bulbs, according to the brightness of his conductivity, if the bulb is more bright, that resistance is lower.

Q:Are sand and particle powders used for casting quartz sand? Detailed and accurate.: General small foundry is river sand, quartz sand is also useful. But the cost is higher, if the product is not high, the river sand on it. You have a particle powder quartz powder with clay, coal powder, in what way do you use.

Q:The difference between silicone and silicone?: The characteristics of silicone grease:The application of silicone grease is more widely than silica gel. Many industrial heat places are using thermal grease. Many different types of people and grease, by adding some "impurities" to its thermal conductivity to improve pure thermal grease. These impurities are graphite powder, aluminum powder, copper powder, silver powder and so on. Pure pure silicone is pure white or milky white, the color of the doped graphite grease dark black, doped with aluminum grease some gray shiny, slightly gray is silver, and copper doped grease are yellow or yellow.Now some high-grade thermal grease using silver or aluminum powder as filler, with high thermal conductivity of the metal, but relatively large metal particles, filling effect is poor, the performance increase is not large, but the improper use of conductive grease, easy to cause a short circuit.

Q:Is the graphite electrode broken like graphite, fossil oil, coke and graphite powder?: The graphite powder is soft, black and gray, greasy and polluting paper. Hardness is 1~2, along the vertical direction with the increase of impurities, its hardness can be increased to 3~5. The specific gravity is 1.9 ~ 2.3. Under isolated oxygen conditions, the melting point is above 3000 degrees Celsius and is one of the most refractory minerals. At room temperature, the chemical properties of stone toner are relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents. The material has high temperature resistance and conductivity, and can be used as refractory materials, conductive materials, wear-resistant and lubricating materials.

Q:How can the antirust graphite powder used for locks be operated? Where is it painted?: When the lock is in use, a small stone powder or pencil powder can be put in the lock core slot for regular (half a year or year) or when the key is not inserted smoothly, so as to ensure that the key is inserted and inserted smoothly. But avoid adding any other oils to lubricate to prevent grease sticking to the spring, causing the lock to rotate and not open.

Q:Crystal graphite of graphite powder: The crystal structure of highly structured pyrolytic graphite, La above 2000Nm, from low temperature to high temperature, the thermal conductivity changes with the temperature is bell shaped, see Figure 1, figure 2.

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