NEWS INFORMATION
各位尊敬的用戶，夏季是激光切割機的激光器故障高發(fā)季節(jié)。統(tǒng)計結(jié)果顯示，高功率激光切割機激光器大部分故障與用戶的操作順序及設(shè)備運行環(huán)境密切相關(guān)，大多數(shù)由于高溫導(dǎo)致激光器濕度高，結(jié)露等情況，為防止這種情況的出現(xiàn)，減少設(shè)備故障時間及其帶來的損失，特提示如下：
一、可預(yù)防故障的產(chǎn)生機理
激光器是將電能轉(zhuǎn)換為激光能的裝置，內(nèi)部構(gòu)成較為復(fù)雜，涉及光，機，電，算等多個學(xué)科和領(lǐng)域。盡管光纖激光器相對其它類型的激光器而言對環(huán)境要求較低，但也必須保證使用環(huán)境符合要求，自身的防護措施能切實起到防護作用。如果開機順序，機箱密閉及水溫設(shè)定等方面存在疏漏，就可能造成激光器內(nèi)部水冷卻的電子和光學(xué)器件因為內(nèi)外溫差導(dǎo)致表面結(jié)露，從而降低激光器的性能，乃至損壞激光器。
二、防范措施
本措施主要是防范內(nèi)部電子或光學(xué)元件結(jié)露，具體可分為以下幾點：
1.保證機箱密閉
光纖激光器的機箱采用了密閉設(shè)計，并安裝了機箱空調(diào)或除濕器，其目的是為了保證機箱內(nèi)的各個元件處于相對穩(wěn)定安全的溫濕度環(huán)境下。如果機箱沒有處于密閉狀態(tài)，則機箱外的高溫高濕的空氣就能進入機箱內(nèi)部，在遇到內(nèi)部通水冷卻的元件時，則在其表面遇冷凝結(jié)，造成可能的損害。故對機箱密閉性的檢查應(yīng)該注意以下幾個方面：A.各機柜門是否存在并關(guān)緊。B.頂部的吊裝螺栓是否擰緊。C.機箱后部未使用的通訊控制接口的保護蓋是否蓋好，已使用的是否固定好。
2.開機順序
由于激光器機箱不可能做到完全密閉，當(dāng)晚上斷電后，機箱空調(diào)停止運轉(zhuǎn)，如果房間沒有安裝空調(diào)或晚間空調(diào)不工作，外部的濕熱空氣可以逐漸滲透進機箱內(nèi)。故早上重新開機時，需注意以下操作步驟：A.啟動激光器總電源（不出光），讓機箱空調(diào)運行30分鐘左右。B.啟動配套的冷水機，等待水溫調(diào)整到預(yù)定溫度，激光出光使能。備注：華俄IE等系列的設(shè)備安裝有溫濕度控制器的，要保證空氣是有氣壓狀態(tài)，在溫濕度達到要求，冷水機自動啟動。C.進行正常加工建議：如可能，在保證安全的前提下，激光器晚上不斷電，讓機箱空調(diào)保持運行。或者激光器安裝空調(diào)房，并保持空調(diào)連續(xù)穩(wěn)定運行（包括晚間）
3.水溫設(shè)定
冷卻水水溫對電光轉(zhuǎn)換效率，穩(wěn)定性及結(jié)露有著直接的影響。通常情況下，冷卻水水溫設(shè)定如下：自來水（冷卻激光器模塊）的水溫應(yīng)該設(shè)定在21攝氏度左右。針對2500W以上的激光器，去離子DI水(冷卻光學(xué)件)的水溫應(yīng)該設(shè)定在27度到33度之間，這個溫度應(yīng)根據(jù)環(huán)境溫度和濕度做相應(yīng)的調(diào)整，通常說來環(huán)境溫度越高，濕度越大，DI水的水溫應(yīng)該相應(yīng)增加。其基本原則是DI水水溫應(yīng)該在結(jié)露點以上。
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Dear users, summer is laser cutter laser failure Gaofajijie. The statistical results show that most of the faults of high-power laser cutting machine lasers are closely related to the user's operating order and the operating environment of the equipment. Most of them are caused by high temperatures, resulting in high humidity and dew of the laser. In order to prevent this situation, The time of equipment failure and the losses it brings are reduced. The tips are as follows:
The mechanism of preventable failure
A laser is a device that converts electrical energy into laser energy. The internal composition is relatively complex and involves many disciplines and fields such as light, machine, electricity, and calculation. Although optical fiber lasers are relatively low in environmental requirements compared to other types of lasers, they must also ensure that the operating environment meets the requirements and their own protective measures can effectively play a protective role. If there are omissions in the boot order, the closure of the chassis and the setting of the water temperature, it may cause the electron and optical devices cooled by the water inside the laser to cause the surface to dew due to the temperature difference between the inside and outside, thereby reducing the performance of the laser and even damaging the laser.
Preventive measures
This measure is mainly to prevent internal electronic or optical components from dew, which can be divided into the following points:
1. Ensure that the chassis is closed
The case of the fiber laser is a closed design and an air conditioner or dehumidifier is installed. The purpose is to ensure that the various components in the chassis are in a relatively stable and safe temperature and humidity environment. If the chassis is not in a closed state, the high-temperature, high-humidity air outside the chassis can enter the interior of the chassis. When it encounters an internal water-cooled element, it condenses on its surface, causing possible damage. Therefore, the examination of the airtight of the chassis should pay attention to the following aspects: A. whether the doors of each cabinet exist and are closed. B. Whether the lifting bolts at the top are tightened. C. Whether the protective cover of the unused communication control interface at the rear of the chassis is covered and the used is secured.
2. Boot Order
Since it is impossible for the laser chassis to be completely closed, when the power is turned off at night, the air-conditioning of the chassis stops operating. If the room is not equipped with air-conditioning or the air-conditioning does not work at night, the external hot and humid air can gradually penetrate into the chassis. Therefore, when rebooting in the morning, you need to pay attention to the following operational steps: A. Start the total power supply of the laser(without light) and let the chassis air conditioning run for about 30 minutes. B. Start the matching chiller, wait for the water temperature to be adjusted to the predetermined temperature, and the laser will emit light. Remarks: China and Russia IE and other series of equipment installed with a temperature and humidity controller, to ensure that the air is in a state of pressure, in the temperature and humidity meet the requirements, the water chiller automatically started. C. Recommendations for normal processing: If possible, under the premise of ensuring safety, the laser will not lose power at night, so that the chassis air-conditioning remains operational. Or the laser installs the air conditioning room and keeps the air conditioning running continuously and steadily(including at night)
3. Water temperature setting
The cooling water temperature has a direct influence on the electrooptic conversion efficiency, stability and condensation. Normally, the water temperature of the cooling water is set as follows: The water temperature of the tap water(cooling laser module) should be set at about 21 degrees Celsius. For lasers above 2500W, the water temperature of deionized DI water(cooling optical parts) should be set between 27 degrees and 33 degrees. This temperature should be adjusted accordingly according to the ambient temperature and humidity. Generally speaking, the higher the ambient temperature, the greater the humidity, the greater the water temperature of DI water should increase accordingly. The basic principle is that DI water temperature should be above the dew point.