regular power graphite electrode
The impact of Shijiazhuang regular power graphite electrode dust on machine tools and cutting tools
Shijiazhuang regular power graphite electrode is a heterogeneous and brittle material with microscopic defects. It has the characteristics of structural inhomogeneity, porosity and brittleness, which have an important influence on the processing of its materials. Research at home and abroad has shown that the cutting of graphite materials is very different from metal materials: metal materials are stripped or nodular cut through plastic deformation to achieve material removal; graphite materials are formed by brittle fracture to generate chipping particles. Or dust to achieve.
Graphite dust has a great influence on the service life and machining accuracy of machine tools and cutting tools. If graphite dust enters the spindle, it will cause unstable clamping, shorten tool life, increase machining surface roughness, increase downtime, reduce workpiece machining dimensional accuracy and spindle bearing service life. Machine tools generally have a protective cover made of transparent materials for the observation of the processing process. If the protective cover is contaminated by graphite dust, the visibility will be reduced, which will affect the sight of the operator and cause more waste. Graphite dust with low purity contains silicon carbide. Silicon carbide is a high-hardness grinding powder. Intrusion into the machine will aggravate the wear of the sliding surface of the machine, and entering the feed system will cause the wear of the lead screw and linear guide; while the purity is high The graphite is a good conductive material. Graphite dust entering the data line interface will affect data transmission, entering the CNC system will affect its sensitivity and reliability, and more seriously, it will cause a “short circuit” of the electrical system and cause a production accident.
Dust prevention and dust removal of machine tools Graphite processing machine tools in the factory can be roughly divided into three categories:
Ordinary machine tools, machining centers, graphite high-speed machining centers (for space reasons, I will not mention the private messages needed for high-speed graphite centers, I will send you). Ordinary machine tools and machining centers need to be modified before they can be used for graphite processing.
(1) Ordinary machine tools, including sawing machines, lathes, milling machines, grinders, etc., are not designed to prevent dust and dust. Direct use will generate a large amount of dust that will not only harm the health of workers, but also shorten the service life of the machine tool and pollute the workshop. Therefore, it must be used after dust-proof and dust-removal transformation. Ordinary machine tools have low precision and are not suitable for the finishing of graphite materials.
(2) Machining centers are generally designed for metal (copper, steel, aluminum, etc.) processing. They have high spindle power and strong load-bearing capacity, making them suitable for heavy cutting. After the transformation, the processing range can be expanded to meet the diversified production requirements of small workshops.
A: The transformation of ordinary machine tools can be divided into sealing transformation and dust collection transformation. The sealing transformation is to use a cover to seal the dust pollution source partially or as a whole, so that the diffusion of dust is limited to a small enclosed space, and at the same time, a certain amount of air is discharged from the cover to maintain a certain negative pressure in the cover. The outside air flows into the hood through the gaps on the hood to achieve the purpose of preventing pollutants from escaping. Seal modification is mostly used for machine tools with high dust concentration during processing. Dust collection transformation is mostly used for the transformation of ordinary milling machines, lathes, and grinders, because these machine tools are flexible in operation. If the processing area is sealed with a sealing cover, it will hinder the processing operation of workers, which is not practical and scientific, and the simple and convenient dust collection transformation is the most commonly used. Dust removal method. It can be installed close to the processing area and the dust generated during processing is concentrated, and the dust collection tube can be effectively collected.
B: The sealing performance of the machining center itself is good, and closing the protective door can effectively prevent dust from escaping. The dust collection tube should be led out from the pipe opening reserved for the machine tool, and try not to lead out from the protective door, so as not to hinder the closing of the protective door. For the transmission system located under the workbench, it is difficult to completely seal and prevent dust, and a dust collection tube can be installed near it.
At the same time, pay attention to the dust-proof of the spindle. The tool holder should be blown clean when changing the tool to prevent dust from entering the spindle. Clean the dust and clean the processing center after each processing. When the carbon company was founded, it established the development strategy of “science and technology, innovation, and leadership”, adhering to the business philosophy of “quality first, service first”, through technological improvement, quality improvement, and market development, carbon has become a region in Shanxi, Hebei, and Mongolia. The largest graphitization processing company. The main business includes regular power graphite electrode, Shijiazhuang regular power graphite electrode, and Datong silicon carbide.