What is HIGH-POWER laser cutting?
利用高能量密度的雷射束
作為「切割工具」對材料進行熱切割
Using high energy density laser beam
as a cutting tool to thermally cut materials
HIGH-POWER laser cutting stands for?
切割質量好
切割效率高
非接觸式切割
切割材料的種類多
適應性和靈活性
High Cutting Quality
High Efficiency
Non-contact Cutting
Various Materials
Adaptability and Flexibility
How to define qualified samples?
How to cut qualified samples?
HIGH-POWER laser cutting, all in Rayclass
通常，影響切割質量的重要工藝參量有切割速度、雷射功率、輔助氣體、焦點位置、噴嘴特性及材料材質性能等。可見影響雷射切割加工因素很多，如果控制不當或參量把握不準，其切割精度和切割質量將會受到很大的影響。
In general, important process parameters that affect the quality of the cutting quality include cutting speed, laser power, shielding gas, focus position, nozzle characteristics, and material properties. It can be seen that there are many factors affecting the laser cutting process. If the control is improper or the parameters are not accurate, the cutting precision and cutting quality will have a great impact.
下面讓我們就一起來看看
日常加工中比較常見的
切割不良現象和解決方案吧~
Let's take a look at the common cutting defects
and solutions in daily processing
在實際加工過程中
可能會遇到各種切割不良現象
以氧氣碳鋼高功率小噴嘴
高速亮面切割技術為例
可能會遇到如下情況
可能原因：
【1】噴嘴選擇過大；
【2】切割氣壓過大引起過燒；
【3】切割速度過慢引起過燒或過快導致切割不充分；
解決方案：
【1】更換小口徑合適噴嘴，舉例16mm碳鋼亮面切割使用1.4D噴嘴，20mm碳鋼亮面切割使用1.6D噴嘴等；
【2】減少氣壓改善切割斷面質量，一般亮面切割氣壓需求在0.6~0.8Bar之間。
【3】將切割速度調整至當前功率合適的範圍（詳見銳科雷射連續雷射器全系列切割參數表）
Possible Reason:
[1] Nozzle selection is too big;
[2] Excessive cutting pressure causes over-burning;
[3] The cutting speed is too slow, causing excessive burning or too fast, resulting in insufficient cutting;
Solution
[1] Replace small nozzle with suitable nozzle；
[2] Reduce the air pressure to have a brighter face of the cutting edge；
[3] Adjust the cutting speed to a suitable range for the current power；
板材上層條紋略顯粗糙
有輕微或較深牙口
下層拖曳線較好
可能原因：
【1】噴嘴選型過大；
【2】正向離焦不足；
【3】切割速度較慢；
解決方案：
【1】若要達到斷面上下全亮，考慮更換小一號口徑噴嘴，例如1.6D更換為1.4D；
【2】噴嘴口徑不變的情況下，繼續增加正向離焦；
【3】將切割速度調整至當前功率合適的範圍（詳見銳科雷射連續雷射器全系列切割參數表）
Possible Reason:
[1] Nozzle selection is too large;
[2] The defocus amount does not match;
[3] Slower cutting speed;
Solution:
[1] Replace small nozzle with suitable nozzle；
[2] With the nozzle diameter unchanged, continue to increase positive defocus;
[3] Adjust the cutting speed to a range suitable for the current power ；
可能原因：
【1】正向離焦過大，導致能量不集中形成滯後拖尾；
【2】氣壓過小導致切割拖尾形成拖曳線滯後產生掛渣；
【3】切割速度過快導致滯後；
解決方案：
【1】適當減小正向離焦，其餘參數不變，觀察底部掛渣情況；
【2】適當增加進給氣壓，可嘗試最多增加至1Bar左右，觀察情況；
【3】將切割速度調整至當前功率合適的範圍（詳見銳科雷射連續雷射器全系列切割參數表）
Possible Reason:
[1] The forward defocus is too large, causing the energy to be concentrated and forming a lagging tail;
[2] Air pressure feed error: Too small air pressure causes cutting tail to form drag line lag and slag;
[3]Too fast cutting speed leads to lag;
Solution:
[1] Reduce forward defocus appropriately, the remaining parameters remain unchanged, observe the slagging situation at the bottom;
[2] Increase the feed air pressure appropriately, try to increase it to about 1Bar at most, and observe the situation;
[3] Adjust the cutting speed to a range suitable for the current power ；
可能原因：
【1】負向離焦量過大,導致產生等離子體，產生藍光並分層；
【2】噴嘴口徑過小；
【3】氣壓進給過大 ；
解決方案：
【1】減小負向離焦，其餘參數不變，觀察現象；
【2】更換大一號口徑的噴嘴；
【3】適當減小氣壓進給；
Possible Reason:
[1] The negative defocus amount is too large, resulting in plasma generation, blue light generation and layering
[2] Nozzle diameter is too small;
[3] Air pressure feed is too large;
Solution:
[1] Reduce negative defocus, the remaining parameters remain unchanged, observe the phenomenon;
[2] Replace the nozzles of the larger size;
[3] Reduce air pressure feed appropriately;
不鏽鋼中厚板切割時遇到未充分切割情況
切割斷面未到達板材底部
可能原因：
【1】噴嘴選擇過小；
【2】負向離焦不足；
【3】氣體壓力不夠，導致未充分切割。
解決方案：
【1】更換更大口徑噴嘴，增加氣體流量；
【2】繼續增加負向離焦，使切割斷面到達底部；
【3】繼續增加氣壓；
Possible Reason:
[1] The nozzle selection is too small;
[2] Defocus amount mismatch;
[3] Insufficient gas pressure, resulting in insufficient cutting
Solution:
[1] Replace larger nozzles to increase gas flow;
[2] Continue to increase negative defocus to make the cutting section reach the bottom;
[3] Increase air pressure;
不鏽鋼厚板切割遇到分層現象
調整氣壓大小和正負離焦量效果均不明顯
可能原因：
【1】在速度無法得到提升的情況下，雷射器能量過於集中，與材料間反應過於劇烈；
【2】噴嘴選型口徑過小，導致流量過小；
解決方案：
【1】保證峰值功率不變的情況下，適當降低頻率和佔空比，舉例50mm不鏽鋼切割時，速度無法增加的情況下，考慮將頻率調整至200Hz左右，佔空比在55~65%之前，可得到較好切割效果；
【2】更換更大口徑噴嘴，提高氣體流量；
Possible Reason:
[1] When the speed cannot be increased, the laser energy is too concentrated and the reaction with the material is too violent;
[2] The nozzle selection diameter is too small, resulting in too little flow;
Solution:
[1] Under the condition that the peak power is constant, reduce the frequency and the duty cycle appropriately.
[2] Replace larger nozzles to increase gas flow;
Rayclass has all you need to
know about laser cutting
Increasing maximum cutting thickness
On or beyond the level of traditional processing method
Increasing cutting thickness of carbon steel
( with Oxygen)
With a faster speed and smaller taper
Improving the cutting speed of
low-to-medium thickness stainless steel
With smaller air pressure and faster speed
Improving the cutting speed of
low-to-medium thickness carbon steel
With Nitrogen for 50% speed increase
長按識別下方二維碼
查看銳科雷射連續雷射器切割參數表
銳科雷射
在高功率雷射器切割應用工藝探索之路上
永不止步
Raycus
On the road of high-power laser cutting application process
KEEP MOVING!
銳科雷射
微信號 : raycuslaser
新浪微博：@武漢銳科雷射
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