2018年激光切割產(chǎn)業(yè)發(fā)展現(xiàn)狀及未來前景分析

      2018年中國激光切割設(shè)備市場規(guī)模為403億元，增長率為32%，其中中小功率激光切割設(shè)備市場銷售規(guī)模一直保持較高的增長速度，其核心激光器實(shí)現(xiàn)了較高的國產(chǎn)化率。大功率激光切割機(jī)相比于中低功率激光切割機(jī)發(fā)展較晚，對國外進(jìn)口依賴較大，進(jìn)口高功率激光器價格居高不下，設(shè)備價格依然非常高，市場增幅相對較低。

     激光切割一直是激光加工應(yīng)用最廣泛的一項(xiàng)技術(shù)，脈沖激光適用于金屬材料，連續(xù)激光適用于非金屬材料，后者是激光切割技術(shù)的重要應(yīng)用領(lǐng)域。與計算機(jī)控制的自動設(shè)備結(jié)合，激光束具有無限的仿形切割能力，切割軌跡修改方便。激光切割無機(jī)械變形、無刀具磨損，容易實(shí)現(xiàn)自動化生產(chǎn)?！　〖す馇懈顝V泛應(yīng)用于鈑金加工、金屬加工、廣告制作、廚具、汽車、燈具、鋸片、升降電梯、金屬工藝品、紡織機(jī)械、糧食機(jī)械、眼鏡制作、航空航天、醫(yī)療器械、儀器儀表等行業(yè)。特別是在鈑金加工行業(yè)中已取代傳統(tǒng)加工方式，深受行業(yè)用戶的青睞?！　∫弧⒓す馇懈罟に嚒　〖す馇懈罾酶吖β拭芏燃す馐丈浔磺懈畈牧?，使材料很快被加熱至汽化溫度，蒸發(fā)形成孔洞，隨著光束對材料的移動，孔洞連續(xù)形成寬度很窄的(如0.1mm左右)切縫，完成對材料的切割?！　〖す馇懈羁煞譃榧す馄懈睢⒓す馊刍懈?、激光氧氣切割和激光劃片與控制斷裂四類。　　1、激光汽化切割　　利用高能量密度的激光束加熱工件，使溫度迅速上升，在非常短的時間內(nèi)達(dá)到材料的沸點(diǎn)，材料開始汽化，形成蒸氣。這些蒸氣的噴出速度很大，在蒸氣噴出的同時，在材料上形成切口。材料的汽化熱一般很大，所以激光汽化切割時需要很大的功率和功率密度?！　〖す馄懈疃嘤糜跇O薄金屬材料和非金屬材料(如紙、布、木材、塑料、橡皮、泡沫等)的切割。超短脈沖激光使這項(xiàng)技術(shù)可以應(yīng)用于其他材料。金屬中的自由電子吸收激光并劇烈升溫。激光脈沖不與熔融的粒子和等離子體反應(yīng)，材料直接升華，沒有時間將能量以熱量的形式傳給周圍材料。皮秒脈沖燒蝕材料時沒有明顯的熱效應(yīng)，沒有熔化和毛刺形成。

    2018年國產(chǎn)激光切割機(jī)技術(shù)有了突破性的發(fā)展，并朝著高功率、高精度、大幅面的方向挺進(jìn)。在中國智能制造大背景下，工業(yè)領(lǐng)域都呈現(xiàn)從傳統(tǒng)加工向高端制造轉(zhuǎn)型的態(tài)勢，中國激光切割領(lǐng)域市場規(guī)模將一直保持著高速發(fā)展的趨勢。(http://jsbfxx.cn    )

In 2018, the market size of laser cutting equipment in China was 40 billion 300 million yuan, and the growth rate was 32%. The market size of the small and medium power laser cutting equipment has maintained a high growth rate, and its core laser achieved a higher localization rate. The high power laser cutting machine is relatively late in the development of low and medium power laser cutting machine, and is more dependent on foreign import. The price of imported high power laser is high, the price of equipment is still very high, and the market increase is relatively low.
Laser cutting is the most widely used technology in laser processing. Pulse laser is suitable for metal materials. Continuous laser is suitable for non-metallic materials. The latter is an important application field of laser cutting technology. Combined with computer controlled automatic equipment, the laser beam has unlimited copying cutting ability, and the cutting path is easy to modify. Laser cutting has no mechanical deformation and no tool wear. It is easy to realize automatic production. Laser cutting is widely used in sheet metal processing, metal processing, advertising production, kitchen appliances, cars, cars, lamps, saw blades, lift elevators, metal crafts, textile machinery, grain machinery, glasses, aerospace, medical instruments, instruments and instruments and other industries. Especially in the sheet metal processing industry has replaced the traditional processing methods, favored by the industry users. First, laser cutting laser cutting uses high power density laser beam to irradiate the cut material, so that the material is quickly heated to the vaporization temperature and evaporates to form holes. With the moving of the beam to the material, the hole is formed in a narrow width (like about 0.1mm), and the cutting of the material is completed. Laser cutting can be divided into four categories: laser vaporization, laser melting, laser oxygen cutting, laser scribing and controlled fracture. 1. Laser vaporization cutting is used to heat the workpiece with high energy density laser beam, so that the temperature rises rapidly and reaches the boiling point of the material in a very short time. The material begins to vaporize and form steam. These vapour spew out very fast, and when the steam comes out, the incision is formed on the material. The vaporization heat of materials is generally large, so laser power cutting requires large power and power density. Laser vaporization is used for cutting very thin metal and non-metallic materials (such as paper, cloth, wood, plastic, rubber, foam, etc.). Ultrashort pulse laser enables this technology to be applied to other materials. The free electrons in the metal absorb the laser and heat up violently. Laser pulses do not react with molten particles and plasmas, and materials are directly sublimated. There is no time to transmit energy to the surrounding materials in the form of heat. Picosecond pulse ablation has no obvious thermal effect, no melting and burr formation.
In 2018, the technology of domestic laser cutting machine has made breakthrough development, and is advancing towards the direction of high power, high precision and large format. In the context of China's intelligent manufacturing, the industry has been changing from traditional processing to high-end manufacturing, and the market size of laser cutting in China will keep the trend of rapid development.

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