Analysis of Graphite Tube Products

Graphite tubes have a wide range of applications, mainly used as heating sleeves, furnace guide linings, ventilation guide pipe fittings for various types of tubular high-temperature furnaces. They can also be used to make consumables for atomic absorption instruments, electrode protection sleeves, and mechanical wear-resistant lining tubes. It is also suitable for non-ferrous metal flow guidance, chemical anti-corrosion pipeline lining, electronic component thermal conductivity kit. Graphite tubes are widely used in vacuum sintering furnaces, lithium battery calcination equipment, semiconductor heat treatment, experimental high-temperature tube furnaces and other scenarios. The tube wall is dense and strong, not easy to crack or leak, and has a long service life. It is a commonly used high-temperature resistant tubular foundation accessory in metallurgy, machinery, electronics, chemical industry, photovoltaic new energy and other industries.

The graphite tube industry chain is divided into three core links: upstream graphite raw material supply, midstream pipe deep processing and manufacturing, and downstream industry wide application. The driving force for the core development of the industry comes from the upgrading of traditional industrial equipment, as well as the incremental demand brought by the rapid development of emerging industries such as photovoltaics, semiconductors, lithium battery storage, and hydrogen energy.

How to choose graphite tube

Our company combines the development trend of the entire graphite tube industry chain with the market demand structure, and matches the graphite tube category according to the usage scenario: general working conditions such as ventilation and flow guidance for daily ordinary equipment, room temperature anti-corrosion, and conventional thermal conductivity can be met by selecting ordinary industrial graphite tubes; High temperature environments such as medium high temperature tube furnaces, heat treatment flow guides, and conventional vacuum sintering should prioritize the use of high-temperature resistant modified graphite tubes; High purity and high-density special graphite tubes must be selected for high-end fields such as photovoltaic thermal fields, semiconductor processes, and new energy precision calcination equipment; Select corrosion-resistant graphite pipes for the transportation of highly corrosive chemical fluids.

Check the core physical parameters: prioritize verifying the purity of graphite. It is recommended to use high-purity graphite tubes for high temperature and precision sealed working conditions. The impurity content is low and it is not easy to oxidize and contaminate the workpiece at high temperatures; Next, let's look at the bulk density. The denser the density, the denser the wall structure, and the stronger the pressure resistance, erosion resistance, and impact resistance, resulting in a longer service life; Simultaneously confirm the thermal conductivity and air permeability coefficients, and select corresponding specifications of products based on the ventilation and thermal conductivity requirements of the equipment.

Identify production process and quality: The outer wall of high-quality graphite pipes is smooth and flat, without cracks, sand holes, pores, missing edges, slag and other defects. The particles on the inner and outer walls of the pipes are uniform and delicate; The pipes that have undergone impregnation, multiple roasting, and high-temperature graphitization precision processing have better sealing and impermeability, far superior to low-end pipes that are easily pressed and formed; Prioritize the selection of finished graphite pipes with neat workmanship, precise inner and outer diameter dimensions, and small tolerance errors for easy on-site assembly and docking.

Select characteristics based on performance requirements: Emphasize maintenance free continuous feeding use, prioritize graphite tubes with strong self-lubricating performance, material circulation is not easy to stick to walls and block tubes, suitable for special scenarios such as closed tube furnaces and precision reaction equipment; Long term continuous high temperature and high frequency use, identify graphite tubes with added antioxidant technology to delay tube wall oxidation loss; For equipment accessories that require high-pressure gas to be pressurized, choose high hardness, thickened pipe wall graphite pipes.

Combining budget and supply strength: General large-scale conventional pipeline procurement can choose high cost-effective ordinary graphite pipes to control procurement costs; Precision equipment and core high-temperature flow guiding accessories should not be tempted by low prices. Low priced and inferior pipes are prone to cracking, leakage, and rapid loss, which increases the cost of later shutdown and replacement; Priority should be given to legitimate manufacturers with complete production lines, customizable long and short pipe diameters, and support for precision machining of openings and slots to ensure stable supply and after-sales processing services.