Since the laser was used in I960, some people have done laser cutting experiments. However, it was not until 1970, when there was 5001000W, the C02 laser with the mode of TEM00, the laser cutting reached the industrial application level and developed rapidly. It is now laser processing. A new technology with relatively mature and widely used development. Laser cutting uses a focused 篼 power density laser beam to illuminate the workpiece so that the material being irradiated is quickly melted, vaporized, ablated, or ignited, while being blown away by means of an idle flow (auxiliary gas) coaxial with the beam. A material that enables a thermal cutting method to cut a workpiece. For the structure and size of the gasket used, it is required to be processed with Q195 cold-rolled steel sheet with a thickness of 5 mm. Due to the small batch size (about 40 pieces), the stamping method is costly and the production cycle is long. If the nitrogen cylinder is in use, the control table and the placement position of the gas distribution system should be easy to observe, operate and adjust. The limit block should be designed in the mold, that is, the position where the piston is pressed into the cylinder should have a protection stroke of 23 mm. The nitrogen cylinder installation should be firm, reliable, stable and balanced. The position of the nitrogen cylinder should be placed as much as possible in the center of the press in accordance with the method of calculating the stamping center. The piston of the 5 nitrogen cylinder cannot be in direct contact with the part. 6. When the nitrogen cylinder is fixed in the upper mold, it can be processed by other conventional mechanical methods in the non-working state, which not only involves many types of work, complicated processes, long processing cycle, but also extremely difficult processing, product quality is difficult to guarantee, and the scrap rate is high. Extremely difficult, it is difficult to meet the processing requirements and design requirements of the gasket. Therefore, this paper has carried out in-depth research and processing path on the laser cutting technology of the gasket, and also provided the necessary leading distance for the slit compensation. In order to further improve the quality of the perforation, the influence of the perforation on the quality of the slit is minimized. The perforation should be performed by using a super pulse with a slow rise characteristic, a small power and a long perforation time. Since a large amount of heat is accumulated in the perforation, if the laser is directly cut by a relatively high power laser, it is easy to cause ablation ablation (thermal damage of the workpiece) due to rapid gasification of the material, and therefore, the power at the start of cutting should be slowly increased. In the test cutting process, it was also found that if a continuous wave laser is used, it is easy to form a burnt edge due to the high overall temperature of the workpiece when the cutting is carried out to the second half, especially when cutting the inner hole of 195 mm and the outer circle of mm, due to cutting. This phenomenon is more serious for a longer period of time, so a pulsed laser must be used for cutting. When the laser is irradiated onto a very thin workpiece, it may cause the material to melt or ablate. The support for the sheet on the cutting device is a support pin with a copper head. When the beam is just passed through the support pin, the copper is almost laser Total reflection, which will cause the workpiece to be ablated and scrapped. When the product batch size is large, the support nail can be avoided by the typesetting of the workpiece when the program is programmed. When the batch size is small, it is only necessary to avoid the support nail when the cutting path is arranged. According to the theoretical analysis and test cutting test, the laser cutting specifications of the final determined large-size thin shim are shown in Table 1. Table 1 Laser cutting specification parameters of the shim perforation specification Cutting specification Power doow Power: 900 W Power rise time:. 5s power rise time: 2. 5s pulse frequency: 200Hz pulse frequency: 800Hz pulse duty cycle: 6% pulse duty cycle: 50% pulse form: super pulse pulse form: door pulse (rectangular pulse) perforation time:. 5s cutting speed: 2 8MPa auxiliary gas (2) pressure, 16MPa After the cutting specification is determined, it can be programmed into the cutting specification subroutine. When programming the main cutting path of the workpiece, it is only necessary to call the subroutine at each cutting contour. Just fine. The quality of the cutting quality of the bookmark5 using laser-cut large-size thin gasket and its comparison with the quality of the traditional mechanical processing gasket are shown in Table 2. Table 2 Laser cutting and machining gasket production efficiency and quality comparison project machining The laser cutting surface roughness and a/Mm can reach 1. The actual laser cutting path of the perforated position gasket is less than 0.05 (real value 7.98) (P8inm hole spacing tolerance / mm can be guaranteed within ± 1 (measured value 2 Cambodia. 94 ) 195tnm inner hole tolerance / nun can be guaranteed within ± 1 (measured value 194.96) 0255mm outer circle tolerance / mm can be guaranteed within 0.10 (measured value 254. Note: laser cutting cost is measured by industry standard 500 yuan / hour. It is processed by conventional mechanical methods. Generally, the material is cut first, and then the fitter drills the process hole. Then, the milling tooling fixture clamps several (generally 10) blanks and processes 8 8mm holes. After the lathe process, it is necessary to change the tooling, reposition the clamping car 255mm outer circle, and step into the 195mm inner hole, and finally transfer the fitter to shape. Not only the process is more, but also because a plurality of workpieces are stacked and processed, it is prone to cracking, wrinkling or deformation, and the product is scrapped, and the actual processing proves that the scrap rate is high and the processability is poor. The laser cutting technology is used to process larger size thin gaskets. The product quality fully meets the design and application requirements. The product qualification rate is 100% and the production cycle is greatly shortened. It is proved that, in the case that the product batch size is small and the processing die cost is high, the use of laser cutting 0. 5 mm thick and large size gasket has a great advantage. Laser cutting can be used as a mature processing method in the processing and production of flat thin parts.
Anodizing treatment is a surface finishing process for aluminum that forms a protective oxide layer on the surface of the metal. The process involves immersing the aluminum material in an electrolytic solution and passing an electric current through it. This creates a uniform and durable oxide coating that enhances the corrosion resistance and aesthetic appeal of the metal.
There are two main types of anodizing treatment: sulfuric acid anodizing and hard anodizing. Sulfuric acid anodizing is the most common type and produces a thinner, more decorative layer of oxide coating, while hard anodizing results in a thicker, harder, and corrosion-resistant layer that is ideal for industrial and automotive applications.
Anodizing treatment provides numerous benefits to aluminum products. It increases their resistance to corrosion and wear and tear, making them suitable for use in harsh environmental conditions. The process also enhances the strength and durability of the metal, extending its lifespan and reducing the need for maintenance.
Another advantage of anodizing treatment is its ability to add color and texture to aluminum products. Different dyes can be added to the electrolyte solution to produce a range of colors, from bright and vibrant to more subdued tones. Additionally, different textures and finishes can be achieved through specialized anodizing processes, such as matte anodizing or brushed anodizing.
Anodizing treatment is commonly used in various industries, including aerospace, automotive, construction, and consumer goods. It is an eco-friendly process as it uses no hazardous materials and produces minimal waste. However, it is important to note that anodizing treatment may affect the dimensional accuracy of the product and may mask defects that are present on the surface of the material.
Overall, anodizing treatment provides an effective way to enhance the functionality and appearance of aluminum products. As research and innovation continue to advance, even more advanced and innovative applications of anodized aluminum are expected to emerge.
Anodic Treatment,Anodizing Surface Treatment,Surface Treatment Anodizing,Boric Acid Anodizing Lizhi Precision Manufacturing Technology Co.,Ltd , https://www.autoindust.com