制氮機在等離子切割領域的應用

等離子空氣切割法以干燥的壓縮空氣作為加工氣體，主要用于切割碳鋼，也可用于切割不銹鋼和鋁。由于空氣主要由氮氣和氧氣組成，切割碳鋼時，切口中氧與鐵的放熱反應提供了附加的熱量。

Using dry compressed air as processing gas, plasma air cutting is mainly used for cutting carbon steel, stainless steel and aluminum. Because the air is mainly composed of nitrogen and oxygen, the exothermic reaction of oxygen and iron in the incision provides additional heat when cutting carbon steel.

同時生成表面張力低、流動性好的FeO熔渣，改善了切口中熔融金屬的流動性，因此不但切割速度較快，而且切割面較光潔，切口下緣基本不粘渣，切割面斜角較小。切割不銹鋼和鋁時，氧與不銹鋼中的鉻和鋁起反應，其切割面較粗糙，一般對切割表面質量要求較高時不采用這種加工方法。

At the same time, FeO slag with low surface tension and good fluidity is generated, which improves the fluidity of molten metal in the incision. Therefore, not only the cutting speed is fast, but also the cutting surface is smooth, the lower edge of the incision is basically free of slag, and the cutting surface angle is small. When cutting stainless steel and aluminum, oxygen reacts with chromium and aluminum in stainless steel, and the cutting surface is rough. Generally, this kind of processing method is not used when the cutting surface quality is high.

等離子空氣切割法主要存在以下缺點：

The main disadvantages of plasma air cutting are as follows

(1)切割面上附有氮化層，焊接時焊縫中會產(chǎn)生氣孔，因此用于焊接的切割邊，需用砂輪打磨，去除氮化層。

(1) There is nitriding layer on the cutting surface, and there will be pores in the weld during welding. Therefore, the cutting edge used for welding needs grinding wheel to remove the nitriding layer.

(2)由于存在氧化作用，電極和噴嘴易損耗，使用壽命較短。等離子氮氣水渦流切割法以氮氣作為工作氣體，主要用于切割不銹鋼和鋁。工作氣體通過渦流環(huán)形成渦旋氣流，使等離子流也以渦旋方式射向工件，從而可獲得一個斜角極小的切割邊。在工作氣體的周圍，是經(jīng)過處理的高壓水流，使電弧能量密度大大提高，形成了溫度極高、挺度好及流速大的等離子弧。另外，部分水離解成氫和氧，對切割過程也有一定的促進作用。

(2) Due to oxidation, the electrode and nozzle are easy to wear and tear, and the service life is short. Plasma nitrogen water vortex cutting method uses nitrogen as working gas, which is mainly used for cutting stainless steel and aluminum. The working gas passes through the vortex ring to form a vortex flow, which makes the plasma flow also shoot to the workpiece in a vortex way, so as to obtain a cutting edge with a very small angle. Around the working gas, there is treated high-pressure water flow, which greatly improves the energy density of the arc and forms a plasma arc with high temperature, good stiffness and high flow rate. In addition, part of the water dissociates into hydrogen and oxygen, which also promotes the cutting process.

和其他等離子切割方法相比等離子氮氣水渦流切割法具有以下特點：

Compared with other plasma cutting methods, plasma nitrogen water vortex cutting method has the following characteristics

(1)切割速度快；

(1) The cutting speed is fast;

(2)切割質量好。切口寬度小，切割面光潔，斜角極小，切口下緣不粘渣

(2) Good cutting quality. The width of the incision is small, the cutting surface is smooth, the bevel angle is very small, and the lower edge of the incision is not sticky

(3)切割變形很小，精度高；

(3) The cutting deformation is very small and the precision is high;

(4)噴嘴壽命長；

(4) The service life of nozzle is long;

(5)適合水下加工，基本無煙塵和弧光，噪聲低。

(5) Suitable for underwater processing, basically no smoke and arc, low noise.

以上就是小編為大家介紹的關于制氮機在等離子切割領域的應用的介紹，希望可以幫助大家，更多的精彩內容可以關注：http://www.issaki.com

The above is the introduction about the application of nitrogen making machine in the field of plasma cutting. I hope it can help you. More wonderful contents can be paid attention to http://www.issaki.com