When developing high-speed machining processes, the following aspects need to be comprehensively considered: (1) cutting parameters; (2) feed method; (3) tool geometry; (4) number of cutting edges and tool shank overhang; (5) cooling conditions; (6) clamping method of the tool shank and machine tool; (7) clamping method of the cutting insert, etc. Currently, scholars in Japan and Germany have conducted some related research on the optimization of cutting parameters and tool geometry angles for high-speed milling and turning of graphite with large diameter milling cutters (≯12 mm). The research results show that: (1) in terms of tool wear, increasing the cutting speed reduces the wear area; increasing the feed per tooth of the milling cutter increases tool wear; increasing

2026-01-22 admin 1

Scholars both domestically and internationally have conducted preliminary analysis and research on the formation and expansion of cracks during chip formation in conventional and high-speed machining of graphite, as well as on chip morphology and size, and the interaction between tool and workpiece materials. Das believes that when using a tool with a positive rake angle for graphite turning, a large chip will first be generated, leaving an arc-shaped groove on the surface of the workpiece to be machined, and then it will be removed in the form of small chips; whereas when using a tool with a negative rake angle for machining, due to the simultaneous expansion of multiple slip planes, the generated

2026-01-22 admin 3

Graphene is currently the best-known material with excellent conductivity, especially suitable for high-frequency circuits, and can be used to produce future supercomputers. Graphene photonic sensors are used to detect information carried in optical fibers. At the same time, the transparent nature of graphene makes the electric boards made of it have superior light transmittance, which can be used in solar cell boxes and liquid crystal displays. Graphene can also be applied in fields such as transistors and gene sequencing, and used to manufacture ultra-thin and ultra-light aircraft materials, as well as ultra-tough bulletproof vests.

2026-01-20 admin 4

The emergence of graphene has undoubtedly injected a new impetus into the new material market. Graphene has become an industry

2026-01-20 admin 22

The specific characteristics of graphite equipment are as follows:

1. Graphite equipment exhibits excellent chemical stability, primarily due to the resin or other polymers bound to it (impregnated, cemented, or mixed).

2. High heat transfer coefficient: Comparatively speaking, the overall heat transfer coefficient of block-hole and plate-type graphite heat exchangers is relatively high.

2026-01-20 admin 7

Today, let's talk about a topic that many people find confusing: What is the relationship between PTFE, FEP, PFA, and ETFE? Are they all fluoroplastics? What are the differences in their properties and applications? Is there a big price difference? Is it difficult to process them

Many people call these materials interchangeably, or even directly say "it's all Teflon anyway." As a result, they often encounter problems when using them, either because the performance is excessive or the requirements are not met.

Today, we will clarify them all at once:

2026-01-20 admin 1

Due to the brittle nature of graphite materials, high-speed machining of graphite does not rely on plastic deformation to obtain strip-like or segment-like chips for material removal, as is the case with plastic metal materials. Instead, it achieves material removal by causing brittle fracture of the graphite material through the impact, crushing, and stripping effects of the cutting tool, resulting in chip particles or powder. The fine granular dust chips generated during graphite cutting have a significant impact on the service life of machine tools and cutting tools, as well as the machining accuracy. If graphite dust enters the spindle, it can cause unstable clamping, reduce the service life of the spindle bearings and cutting tools, increase downtime, and decrease the dimensional accuracy of the workpiece. For high-speed machining, due to the high spindle speed, unstable clamping can cause inertial centrifugal forces, which

2026-01-20 admin 0

As we all know, during the manufacturing process of graphite products, the pyrolysis and condensation of organic carbonaceous materials lead to the formation of porous artificial graphite materials, with a general porosity of around 20-30%. Most of these pores are open pores, which increases the diffusion speed and depth of oxidizing gases, deteriorating the oxidation resistance. Generally, oxidation begins at around 400℃ in air. One of the main measures to prevent the oxidation of graphite materials is to reduce the contact area between the graphite materials and oxygen. Essentially, it involves covering the pores or active sites of the graphite materials with antioxidant substances, preventing their surfaces from being directly exposed to air. Currently, there are roughly three methods for preventing the oxidation of graphite materials: surface coating, vapor deposition, and impregnation. Among them, the impregnation method is gaining increasing attention due to its advantages such as simple equipment, easy operation, significant effect, and good economy.

2026-01-20 admin 1