Molded graphite

Molded graphite — фото 1
jiangxi-ningheda-new-material-co-ltd.promportal.su
Alisa Deng Jiangxi Ningheda New Material Co., Ltd.
+861837050907
jiangxi-ningheda-new-material-co-ltd.promportal.su
The fine grain graphite block produced by cold molding is widely used in machinery, electronics, semiconductors, polycrystalline silicon, monocrystalline silicon, metallurgy, chemical, textile, electric furnaces, space technology and biological and chemical industries.

The graphite has the following characteristics:

* Good electric conductivity and high thermal conductivity
* Low thermal expansion and high resistance to thermal shock.
* The strength increases at high temperature, and it can withstand over 3000 degrees.
* Stable chemical property and hard to react
* Self lubrication
* Easy to process

* Technical Characteristic

Grade

NX601

NX602

NX603

NX604

NX605

Grain Size

(μm)

25

25

25

25

25

Bulk Density

(≥g/cm3)

1.55

1.72

1.80

1.85

1.90

Compressive Strength

(≥MPa)

35

45

60

70

80

Flexural Strength

（≥MPa）

15

20

30

35

40

Porosity

(≤%)

23

20

17

14

11

Specific Resistance

（≤μΩm）

14

13

12

12

12

Ash Content

(≤ppm)

800

700

600

500

300

Shore Hardness

35

45

50

55

60

* The ash content can be purified to 30ppm according to the requirement.
* The above index data is the standard value, not the guaranteed value.

* Product Size

Size

Size

Size

Size

Size

(mm)

(mm)

(mm)

(mm)

(mm)

φ100×250

φ210×250

400×200×100

410×250×160

510×310×200

φ120×250

φ250×250

280×280×110

450×200×150

450×450×300

φ130×250

φ300×250

320×260×120

410×310×180

600×500×200

φ135×250

φ200×400

320×320×150

410×310×200

600×500×300

φ150×250

φ300×400

320×320×190

410×310×240

800×400×200

φ170×250

φ400×400

330×330×170

510×310×150

920×340×340

φ180×250

380×350×200

510×310×180

500×400×200

Other sizes can be produced according to customer requirements.Производитель: Собственное производство
07.05.2025

Другие объявления автора: Alisa Deng Jiangxi Ningheda New Material Co., Ltd.

Graphite boat for tungsten carbide sintering

Graphite boat for tungsten carbide sintering

The graphite boat is a kind of graphite mold, using as a carrier, which can put the raw materials and parts that we need to position or shape together in the graphite mold for high-temperature sintering. The graphite mold is made of artificial graphite blocks by mechanical processing. Graphite boats are also called graphite boxes, graphite saggers, and graphite molds. Performance characteristics of graphite boat / graphite box 1. Good conductivity (second only to copper and aluminum) Good thermal conductivity (approximately 1/3 of copper, 1/2 of aluminum, and 2 times of steel at room temperature) 2. The coefficient of thermal expansion is particularly low The strength increases at high temperatures and approximately doubles at 2500°C. (Compressive strength ≈ 2 times the compressive strength). Instructions for use of graphite boat / graphite box Our company produces and processes graphite boxes according to customer drawings, and uses wooden box packaging to ensure the safety of the goods. The timeliness and transportation safety of the cooperative logistics company are guaranteed, so that customers have no worries about after-sales. Our company produces all kinds of fine-grained high-purity artificial graphite blocks suitable for processing graphite boxes throughout the year, and specializes in processing various specifications of graphite boxes and graphite trays. Using fine-grained high-density graphite as the raw material, the processed graphite box has the characteristics of high temperature resistance, oxidation resistance, high body density, etc., which can be used in a variety of harsh high temperature environments. It is the first product for customers in the high-end graphite industry at home and abroad.Производитель: Собственное производство

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Graphite crucible for nonferrous metal melting refining smelting

Graphite crucible for nonferrous metal melting refining smelting

High-purity graphite has the characteristics of high strength, high density, high purity, high chemical stability, compact and uniform structure, high temperature resistance, high electrical conductivity, good wear resistance, self-lubricating, and easy processing. It is widely used in metallurgy, chemical industry, and aerospace. , Electronics, machinery, nuclear energy and other industrial fields. Especially large-scale and high-quality high-purity graphite, as an alternative material, has a broad application space in high-tech and new technology fields, and has a wide range of application prospects. High-purity graphite crucible has excellent thermal stability, corrosion resistance, impact resistance, acid corrosion resistance, high thermal conductivity and quality stability. It is a kind of very excellent performance in molten gold crucibles, and is currently widely used in alloy tools The smelting of steel and the smelting of non-ferrous metals and their alloys. However, improper use of high-purity graphite crucibles will greatly affect its performance and service life. Therefore, relevant experts have summarized the following points for the use of high-purity graphite crucibles. 1: The high-purity graphite crucible must be slowly baked to 500 degrees Celsius before use. After use, it must be placed in a dry place to avoid water intrusion. 2: When using, it must be added according to the capacity of the high-purity graphite crucible, and the metals placed should not be squeezed too tightly to prevent the metal from thermally expanding and cracking the crucible. 3: When taking out the molten metal after melting, it is best to scoop it out with a spoon, use calipers as little as possible, and pay attention to the action to be light, to avoid impacting the crucible to excessive force and damage. 4: When using high-purity graphite crucible, avoid strong oxidizing flame directly spraying on the crucible wall, which will damage the crucible and shorten the service life. The high-purity graphite crucible has excellent performance, but in order to better use and prolong the service life of the high-purity graphite crucible, we must know the above instructions to avoid damaging it.Производитель: Собственное производство

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Extruded graphite

Extruded graphite

* Usage Mid-grained graphite is widely used in the production of poly crystalline silicon in the photovoltaic industry, heating and thermal insulation components in mono crystalline silicon furnaces, and also used in casting, chemical, electronics, non-ferrous metals, high-temperature processing, ceramics and refractory materials and other industries. Detail usages are as follows: 1. For processing graphite crucible, graphite boat, graphite mold, graphite rotor, graphite heating element, graphite flow trough, graphite cold iron, etc.; 2. used for high temperature furnace body to make structural materials; 3. used in strong acid, alkali, strong corrosive environment, such as rare earth smelting, chemical industry, etc., processed into various parts according to needs; * For processing graphite electrodes. * Technical Characteristic Grade Index NX-21 NX-22 NX-82 Grain Size(μm) 2.0 2.0 0.8 Bulk Density(≥g/cm3) 1.6 1.7 1.72 Compressive Strength(≥MPa) 19 30 35 Flexural Strength (≥MPa) 7.8 13 13.5 Specific Resistance(≤μΩm) 9 8.5 8.5 Ash Content (≤%) 0.3 0.3 0.3 Thermal expansion coefficient (x10-6℃) 2.0 2.2 2.2 * Product Size NX-82 NX-22 NX-21 NX-21 365×365×2030 365×365×2030 365×365×2030 Φ425×2030 425×425×2030 425×425×2030 425×425×2030 Φ525×2030 700×350×2400 525×525×2030 525×525×2030 Φ625×2030 525×625×1950 525×625×1950 Φ800×1100 Φ380×2030 Φ900×1100Производитель: Собственное производство

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Graphite ingot for nonferrous metal melting

Graphite ingot for nonferrous metal melting

High-purity graphite has the characteristics of high strength, high density, high purity, high chemical stability, compact and uniform structure, high temperature resistance, high electrical conductivity, good wear resistance, self-lubricating, and easy processing. It is widely used in metallurgy, chemical industry, and aerospace. , Electronics, machinery, nuclear energy and other industrial fields. Especially large-scale and high-quality high-purity graphite, as an alternative material, has a broad application space in high-tech and new technology fields, and has a wide range of application prospects. High-purity graphite crucible has excellent thermal stability, corrosion resistance, impact resistance, acid corrosion resistance, high thermal conductivity and quality stability. It is a kind of very excellent performance in molten gold crucibles, and is currently widely used in alloy tools The smelting of steel and the smelting of non-ferrous metals and their alloys. However, improper use of high-purity graphite crucibles will greatly affect its performance and service life. Therefore, relevant experts have summarized the following points for the use of high-purity graphite crucibles. 1: The high-purity graphite crucible must be slowly baked to 500 degrees Celsius before use. After use, it must be placed in a dry place to avoid water intrusion. 2: When using, it must be added according to the capacity of the high-purity graphite crucible, and the metals placed should not be squeezed too tightly to prevent the metal from thermally expanding and cracking the crucible. 3: When taking out the molten metal after melting, it is best to scoop it out with a spoon, use calipers as little as possible, and pay attention to the action to be light, to avoid impacting the crucible to excessive force and damage. 4: When using high-purity graphite crucible, avoid strong oxidizing flame directly spraying on the crucible wall, which will damage the crucible and shorten the service life. The high-purity graphite crucible has excellent performance, but in order to better use and prolong the service life of the high-purity graphite crucible, we must know the above instructions to avoid damaging it.Производитель: Собственное производство

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Isostatic graphite

Isostatic graphite

Isostatic graphite refers to graphite materials produced by isostatic pressing. Isostatic graphite is pressed uniformly by liquid pressure during the molding process, and the obtained graphite material has excellent properties. It has: large molding specifications, uniform blank structure, high density, high strength, and isotropy (characteristics and dimensions, The shape and sampling direction are irrelevant) and other advantages, so isostatic graphite is also called "isotropic" graphite. Features of isostatic pressing technology: (1) The density of isostatic pressing products is high, which is generally 5%-15% higher than that of unidirectional and two-way molding. The relative density of hot isostatic pressing products can reach 99.80%-99.99%. (2) The density of the compact is uniform. In compression molding, whether it is one-way or two-way pressing, the green compact density distribution will be uneven. This density change can often reach more than 10% when pressing products with complex shapes. This is caused by the frictional resistance between the powder and the steel mold. Isostatic fluid media transfer pressure, equal in all directions. The compression of the envelope and the powder is roughly the same. There is no relative movement between the powder and the envelope. There is little frictional resistance between them, and the pressure drops only slightly. The density drop gradient is generally less than 1%. Therefore, it can be considered that the blank The bulk density is uniform. (3) Because of the uniform density, the production aspect ratio can be unlimited, which is conducive to the production of rod-shaped, tubular, thin and long products. (4) The isostatic pressing molding process generally does not need to add lubricant to the powder, which not only reduces the pollution to the product, but also simplifies the manufacturing process. (5) Isostatically pressed products have excellent performance, short production cycle and wide application range. (6) The disadvantage of the isostatic pressing process is that the process efficiency is low and the equipment is expensive. Characteristics of isostatic graphite materials (1) Isotropic Generally, materials with an isotropy degree of 1.0 to 1.1 are called isotropic materials. Due to the isostatic pressing, the isotropy of isostatic graphite can be within 1.0 to 1.1. The isotropy of isostatic graphite is affected by the heat treatment process, the isotropy of the powder particles and the molding process. In the heat treatment process of isostatic graphite, heat is gradually transferred from the outside to the inside, and the temperature is gradually reduced from the outside to the inside. The uniformity of the external temperature is better than the uniformity of the internal temperature. Homotropy is better than internal. After the binder pitch is graphitized, the microcrystalline structure formed has little effect on the isotropy of the graphite block. If the isotropy of the powder particles is good, even if the compression molding is used, the isotropy can be prepared. Graphite with good homogeneity. In terms of molding process, if the binder pitch and powder are not uniformly kneaded, it will also affect the isotropy of the isostatic graphite. (2) Large size and fine structure It is impossible to prepare carbon products with large specifications and fine structures by compression molding. To a certain extent, isostatic pressing can overcome the shortcomings of uneven product volume density caused by compression molding, greatly reduce the probability of product cracking, and make the production of large-size and fine-structure products a reality. (3) Homogeneity The internal structure of isostatic graphite is relatively uniform, and the bulk density, resistivity and strength of each part are not much different. It can be regarded as a homogeneous graphite material. The homogeneity of isostatic graphite is determined by the pressing method of isostatic pressing. When isostatic pressing is used, the pressure transmission effect along the pressing direction is the same, so the volume density of each part of the isostatic pressing graphite is uniform.Производитель: Собственное производство

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