逆变电焊机维修入门

逆变电焊机维修入门 逆变电焊机维修入门 准备工作: 一、心理准备 1.做为一名合格的修理工要有的严谨的科学态度. 2.抗压能力要强. 3.积极思维。 4.热爱此行业，有钻研，收集的精神。 二、物质准备 1.数字万用 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf ，机械万用表各一块。 2.示波器。 3.电桥(非必需品). 4.积极收集各种主流机型资料. 5.PC(个人计算机) 6.螺丝刀钳子烙铁焊锡等等不再罗嗦。 7.三项动力电 三、专业知识准备(最低门槛) 1.熟悉电阻电容及其他各类常用元器件参数的读法。 2.熟悉基本数电，模电知识。 3.了解常用功率变化线路的工作原理(半桥，全桥，单端等等) 4.熟悉各类元器件的测量 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 . 维修步骤: 一、初接故障机 1.询问机主故障情况，如不清楚切勿送电加重故障。 2.判断该机线路是否属于自己熟悉品牌. to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides 二、开机检查 1.开机检查后听闻望窃，检查有无明显烧毁，断裂，及硬性机械问题。 2.根据机主形容故障现象首先排查可疑度最大部分。 3.完成前俩点后，从时间顺序上将诊断步骤安排好。 三、诊断步骤 1.判断故障问题出现在主回路还是辅助电路。 2.如问题在主回路应细心检查，更换顺坏元器件，确认无误才可送电。 3.如问题在辅助电路，应想办法切断主回路和辅助电路公共电源端，以防止维修过程中造成主回路损坏。(既单加辅电) 4.混合型故障，如功率器件击穿，那么正常来讲 驱动也不保，此时应该明白修理的先后顺序，先控制，后主。 四、主回路维修检测步骤 1.普通逆变焊机功率变换过程一般为，整流-逆变-二次整流。 2.整流部分问题普通现象表现为，送电不能(跳闸)，功率器件直流母线电压没有或电压不正常，开机无反应。 3.逆变部分问题普遍现象较易从外观发现，具体 测量方法下面会介绍。 4.二次整流部分元器件较单一，容易测量，大部分可以直接从输出端子进行测量观察是否存在短路，开路，或者压降不正常。 五、控制电路维修诊断过程 由于控制电路较复杂，放在下面具体分析。 MOSFET及IGBT的测量 这个百度搜森达焊接就有，我不必多啰嗦，补充一句: 注意区分沟道，普通MOS 数字万用表晶体管档可达到门限电压，IGBT，可以用机械表用手指当导体，形成模拟驱动，以检测其好坏。 to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides 1、K——电源开关 用以接通(或切断)与市电(220V、50赫兹)的联系 2、 RT——起动电阻 因焊机启动时要给后面的滤波电解电容充电。为避免过大的开机浪涌电流损坏开关及触发空开跳闸，在开机时接入启动电阻，用以限制浪涌电流。正常工作后，启动电阻被继电器短路。实际电路中，为避免因开机浪涌电流冲击肇成启动电阻损坏，起动电阻采用了热敏电阻(PTC和NTC)，它们具有良好的耐冲击性。 、 J1——继电器 3 开关接通之后，电流通过启动电阻给滤波电解电容充电，当电容电压达到一定值时，辅助电源开始工作提供24V电，使继电器吸合，将启动电阻短路。 4、 DB——硅桥 此硅桥用于一次整流，将市电220V、50赫兹交流电整流后输出308V的直流电。 5、 C1——电解滤波电容 整流后输出的308V的直流电为脉动直流，此电容起滤平作用 6、 R——放电电阻 在关机以后，滤波电容中存有很高电压，为了安全，用此电阻将存电放掉。 7、 C2——高频滤波电容 在高频逆变中，需要给开关管提供高频电流，而电解滤波电容因本身电感及引线电感的原因，不能提供高频电流，因此需要高频电容提供。 8、 Q——开关管 开关管Q1、Q2、Q3、Q4组成全桥逆变器，在驱动信号作用下，将308V直流转 10万赫兹)交流电的。 变成100KHz( 9、 C3——隔直电容 为避免直流电流流过变压器肇成变压器饱而接入此电容 10、T1——主变压器 变压器的作用是将308V的高压变换成适合电弧焊接所需要的几十伏的低压。 11、D——快速恢复二极管 D5、D6的作用是二次整流，即将100KHz的高频交流电流再次转变成直流电流。 12、L1——电抗器 电抗器具有平波续流作用，可使输出电流变得连续稳定，保证焊接质量。 to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides 13、RF——分流器 分流器是用锰铜制成的大功率小阻值的电阻，用于检测输出电流的大小，提供反 馈信号。 四、全桥逆变器工作原理 1、全桥逆变器的电路图 2、全桥逆变器工作原理 全桥逆变器每个工作周期分四个时段，分别为t1、 t2、t3、t4，其工作原理如下: t1时段 K1、K4导通， K2、K3关断 电流方向: 正极 K1 T C1 K4 地 t2时段 K1、K4、K2、K3关断 无电流 t3时段 K1、K4关断， K2、K3导通 电流方向: 正极 K2 C1 T K3 地 t4时段 K1、K4、K2、K3关断 无电流 从上述分析看，在t1与t3时段里，流过变压器T的电流方向正好相反，也就是将直流电变成了交流电。 五、主回路中点波形图 主回路中点波形 谢谢 求解, 中点波形在【维修】中主要是测量是否存在偏磁，PWM占空比异常，触发频率是否正常等等。很好理解，你就当他是个方波交流电就可以了。首先对称肯定是最重要的(即调试员常说的是否漂移)，其次观察死区，幅值等等。。这帖子准备写的 内容 财务内部控制制度的内容财务内部控制制度的内容人员招聘与配置的内容项目成本控制的内容消防安全演练内容 太多我以后会慢慢介绍，并且穿插实机维修 报告 软件系统测试报告下载sgs报告如何下载关于路面塌陷情况报告535n,sgs报告怎么下载竣工报告下载 ，主流机型电路图故障原理分析，及一些纯经验性的东西。 请问中点波形在哪个位置用示波器测呀，波形是什么样的呀，谢谢, to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides AB俩点 谢谢楼主的回答，还有个问题想请教，测中点波形是不是需要加上308V强电压呀，是的话示波器可以直接测量吗?会不会烧毁示波器的呀, 答:不会 所有的逆变的机器都是么 ab点 是不是就是主变一次的两根线啊 你画的图是全桥的吧 那单端是怎么回事啊,还有半桥 ,求解 答:我换个说法，变压器一次电压波形 最常见的PWM脉宽调制器3525 3、 各引脚功能: 1、2脚:为误差放大器正反向输入端，因3525内部误差放大器性能不好，所 以在控制模块中没有使用。 3脚:为同步时钟控制输入端， to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides 4脚:为振荡输出端; 5、6脚:为振荡器Ct、Rt接入端,f=1/Ct(0.7Rt+3Rd 7脚:为Ct放电端，改变Rd可改变死区时间 8脚:慢起动，当8脚电压从0V—5V时，脉宽从零到最大。 9脚:补偿(反馈输入)端，9脚的电压决定了输出脉宽大小。 10脚:关闭端，当10脚电平超过1V，脉宽关闭。 11、14脚:脉冲输出端，输出相位相反的两路脉冲。 12、15脚:为芯片接地和供电端 13脚:输出信号供电端。 16脚:输出+5V基准电压。 这是RL 培训 焊锡培训资料ppt免费下载焊接培训教程 ppt 下载特设培训下载班长管理培训下载培训时间表下载 资料的介绍，我多几句嘴，一般驱动不工作，应该先查3525的 8 9脚，这个电压是0-5V，脉宽从无到满宽状态，RL公司一般用8脚接保护线路，慢启动电路，9脚做反馈。5.6脚位RC可以改变脉冲频率，损坏一样可以导致驱动不工作，但是，在怀疑PWM部分存在问题时，务必先检查16脚是否有基准电压。 这是RL ZX7-160的电路图，我用图纸来讲，这样不会显的那么抽象。 to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides 此处如无308V，那么整流滤波部分就很可疑，一般来说这部分电路损坏后现象很明显 封波情况下，AB点对地电压为24V，AB点为0V说明直流电压没有，管子有损坏或母线电源问题，正常满宽驱动情况下，AB点对地位13-15V范围内 这些个驱动电阻，在维修时，如果有损坏，找不到相同阻值的情况下，可以略有误差，比如原驱动电阻为4.7R，可疑用5.1R甚至10R都是可以正常工作的， 经验:对于驱动线维修后如果搞不清，未避免直通炸机，用万用表直流档分别测俩组驱动，如果同相位，电压差为0.反之则说明相位相反。 对于RL380V的焊机，如果滤波电解电容损坏(短路)，那么与其串联的那个也要注意，因为一个不够，是俩个串起来分压一个短路，另外一个也够呛。 对于奥太线路的驱动板，可以在11插上2 3 4脚接一个电位器，扭动来观察驱动波形。 RL氩弧焊机二次整流输出的地方有个双端稳压管，故障率极高，不一定是快恢复的故障。 对于没有动力电的朋友，可以用个老式220 380的交流焊机 接220 380接焊机的控制变压器那俩个接头，可以勉强维修。(对于部分机型) 对于很多气保焊来说，刹车场管损坏可以使用单管IGBT代替，甚至普通继电器。 to West rear, to County Shen Liqun report guerrillas breakout Hou of action situation, boat via Zhejiang wuxing daughter town Shi, six people has a NI surname "spies" (enemy) midway tuogu landing tipsters, away from small town three in Xu, was day Elves Li Taishan Department captured, five people all killed, broken corpse sank Yu River in the. On January 18, 1943, when the Japanese army militiamen arrested 53 people in Wuzhen, transferred to the tomb of the former Japanese military police command (in the "Tai" Jiang Yuan), the 28th in Shenyang North of jade bang massacred them. Hu Maosheng knife wounds woke up in the middle of them, crawling out from the dead, in the tomb of Gao Changhai residents, saved by bing. Such as Hu Maosheng, Gao Changhai is a witness to this tragedy. (B) in memory of "massacre" Xu Youyong yan tomb is the copper law. Copper originally was called Luo yan Tomb, because Eastern Han dynasty distinguished prose poems my father yan Tan bogey was buried in the town's water. Has a long history here, cultural atmosphere, and there are many old houses, and left many people with lofty ideals. Business flourished here, is the hub of four townships of agricultural and sideline products, wine culture has a long history. The outskirts of the town has left, "Huang Chi", originally Yue water hides