激光的運用經過幾十年的發(fā)展已經越來越成熟,給全球制造業(yè),特別是鈑金加工行業(yè)帶來了巨大的變化。光纖激光切割機已經從工業(yè)領域走進了我們的生活,其適用切割的材料也越來越多。但是在使用光纖激光切割機切割不同材料時,采用的切割方法也要做適當的調整,以達到理想的切割質量
一、不銹鋼切割
切割不銹鋼金屬板材一般采用氮氣,防止氧化,無毛刺邊緣,幾乎不用后處理便可直接焊接,根據不銹鋼材料特性可以加速液體的流動性,使切割效率更高更快。而采用氧氣進行切割的效果可能要比氮氣差,造成端面發(fā)黑、不光滑等現象。
二、碳鋼切割
激光切割碳鋼時一般采用氧氣會得到較好的效果。利用氧氣反應熱大幅面提高切割效率的同時,產生的氧化膜還會提高反射材料的光束光譜吸收因數。采用氧氣加工時,有一個問題是邊緣可能會發(fā)生輕微氧化,如果要求較嚴格的用戶可以采用氮氣進行高壓切割,當然也可以通過給工件表面涂油以達到更好的切割效果。
三、鋁切割
鋁是金屬材料中的高反材料,它具有高反射率和熱傳導性。近年來許多生產廠家的激光切割機都通過安裝“防反射裝置”來適應鋁材切割,采用不具備“防反射裝置”的激光切割機會使得其光學組件受到損毀。同時,根據設備的功率不同,切割鋁材的厚度也不同。一般來說同一設備切割不銹鋼和碳鋼的厚度要比鋁材等高反材料的厚度要厚。鋁材同樣更適合用氮氣進行切割,切割效果好端面較光滑。
四、銅和黃銅切割
與鋁一樣,銅與黃銅屬于高反材料,需要采用“防反射裝置”的激光切割機進行切割。厚度1mm以下的黃銅可以用氮氣切割;厚度2mm以下的銅可以切割。
The application of laser has become more and more mature after several decades of development, which has brought great changes to the global manufacturing industry, especially the sheet metal processing industry. Fiber laser cutting machine has come into our life from the industrial field, and its suitable for cutting more and more materials. But in the use of fiber laser cutting machine cutting different materials, the cutting methods used also need to make appropriate adjustments to achieve the ideal cutting quality one, stainless steel cutting stainless steel metal plate generally used nitrogen, prevent oxidation, no burr edge, almost no post-processing can be directly welded, according to the characteristics of stainless steel materials can speed up the flow of liquid, cutting efficiency is higher and faster. And the use of oxygen cutting effect may be worse than nitrogen, resulting in end face blackening, not smooth and so on. Second, carbon steel cutting laser cutting carbon steel when the general use of oxygen will get better results. While the cutting efficiency is greatly improved by using the oxygen reaction heat, the resulting oxide film can also increase the absorption factor of the reflecting material. When using oxygen processing, there is a problem that the edge may be slightly oxidized, if more stringent users can use nitrogen for high-pressure cutting, of course, you can also oil the surface of the workpiece to achieve a better cutting effect. Aluminum cutting aluminum is a high reflective material in metal materials, it has high reflectivity and thermal conductivity. In recent years, many laser cutting machines are equipped with anti-reflective devices to adapt to aluminum cutting, and the optical components are damaged by using laser cutting machines without anti-reflective devices. At the same time, according to the power of different equipment, cutting aluminum thickness is also different. Generally speaking, the same equipment cutting stainless steel and carbon steel thickness than aluminum equal height anti-material thickness to be thick. Aluminum is also more suitable for nitrogen cutting, cutting effect is good end more smooth. Copper and brass cutting and aluminum, copper and brass are high reflective material, need to use anti-reflective device of laser cutting machine. Brass less than 1mm thick can be cut with nitrogen; copper less than 2mm thick can be cut.