プラズマ 切断 マシン

アルゴン is an an inert gas and its plasma arc is stable. Stability means that the gas barely reacts with any metals at high temperatures. Electrodes and nozzles used for argon cutting generally have a longer service life than electrodes and nozzles used with other gases. Argon has limitations during cutting due to the lower plasma arc and enthalpy. In addition, the use of argon gas cutting in an argon gas protected environment will inevitably cause slag problems. This is primarily due to the fact that the surface tension of the the molten metal is approximately 30% higher than in a nitrogen environment. These issues are one reason why argon is rarely used in plasma cutting.

窒素 has better plasma arc stability and higher energy jets than argon, especially at higher power supply voltages. additional, it creates minimal slag on the lower edge of the cut even when cutting highly viscous metals such as nickel-based alloys and stainless steel. Nitrogen can be used alone or mixed with other gases. It also facilitates high-speed cutting of carbon steel.

Air is composed of 78% nitrogen and 21% oxygen, making it a suitable gas for plasma cutting. The oxygen content of air makes it one of the fastest gases for cutting mild steel. Additionally, since air is everywhere, it is an economical gas. The downside is that the electrodes and nozzles used in this process often have a short lifespan, increasing cutting costs and reducing efficiency. Additionally, using air as a stand-alone gas is problematic because it causes the slag to hang and reduce oxidation.

Like air, oxygen can increase the cutting speed of mild steel. Utilizing high-energy plasma arc cutting and-high-temperature oxygen to increase cutting speed. しかし, to use oxygen, it is best to use high-temperature-resistant and anti-oxidation electrodesation electrodes. Utilizing plasma a-high-energy plasma arc cutting and-speed. Utilizing high-energy plasma arc cutting and-high-temperature oxygen to increase speed. しかし, to use oxygen, it is best to use high-temperature-resistant and anti-oxidation electrodesation electrodes.。

水素 is often used as an auxiliary gas mixed with other plasma cutting gases. One of the the most common combinations is hydrogen and argon, which produces one of the most powerful gases in plasma cutting. Mixing argon with hydrogen significantly increase the arc voltage, enthalpy, and cutting capabilities of the the argon plasma jet. The cutting efficiency of this combination also increase when compressed by a water jet.

チェック 高 周波数 アーク イグニッション 回路 ファースト チェック 110VAC 電源 供給 および 観察 かどうか there are 放電 スパーク between G1 and G2. If not, it's usually due to a problem with the 110VAC power supply or the bakelite board holding G1 and G2 absorbing moisture, causing discharges and high voltages. Dry the bakelite board with an electric blower and restore 110VAC power. If there is still no arc ignition, チェック 高 周波数 アーク イグニッション ワイヤー デュー に スキン 効果 の 高 周波数, ワイヤー may have poor contact with the conductive ring inside the nozzle, or may be short-circuited with the cooling water due to the sealing ring. 分解 the torch, tightening the high-frequency wire, or replaceing the seal usually solves the problem.

When high-frequency sparks are observed, first check whether there is a 400VDC open circuit voltage. If not, please check whether the three-phase power supply is missing a phase. Then check the high-power thyristor and trigger circuit board in the power box. If the power supply is normal, open the PLC control box and check the input and output signals of the PLC. Inputs include cooling water and cutting water flow signals as well as nitrogen and oxygen pressure signals. If there is no cooling water or cutting water flow signal, please replace the cooling water pump and cutting water pump. If there is no nitrogen or oxygen pressure signal, check the nitrogen and oxygen sources and check the pipes for leaks. If all startup conditions are met, inspect the torch. If the sealing ring inside the electrode rod or on the nozzle is damaged, water will penetrate into the cavity between the electrode and the nozzle, causing a short circuit between the DC power supply and the nozzle, preventing the formation of a loop with the workpiece. Replacing the seal and reassembling the torch should resolve the issue.

It is characterized by the the inability to pierce the workpiece, excessive slag or uneven cuts. It is usually caused by insufficient compression of the main arc, resulting in a thick arc column and insufficient penetration. The main reason is insufficient cutting gas pressure or leakage in the cutting gas pipeline. Check the combined solenoid valve, combined switch and air pipe that control the cutting gas. If you are using a replica nozzle, incorrect parameters may cause an interruption in the airflow between the electrode and the nozzle, causing this problem.

During the working process of the plasma cutting machine, the plasma arc is first ignited. The high-frequency oscillator excites the gas between the electrode and the inner wall of the nozzle, causing high-frequency discharge, which partially ionizes the gas and forms a small arc. This small arc, propelled by compressed air, ejects from the nozzle and ignites the plasma arc, which is the spark generator's primary job. Under normal circumstances, the working time of the spark generator is only 0.5 to 1 second. Failure to automatically extinguish the arc is generally due to misalignment of components on the control circuit board, or improper discharge electrode gaps in the spark generator. Regularly check the discharge electrode of the spark generator to keep its surface smooth, adjust the discharge electrode gap of the spark generator (0.8~1.2mm) in time, and replace the control board if necessary.

接地 は an 不可欠 準備 前 切断. 失敗 に 使用 特殊 接地 ツール, the presence of insulators on the surface of the workpiece, and the the serious aging of the ground wire after long-term use will all lead to poor contact between the ground wire and the workpiece。 特殊 接地 ツール should be used to check whether there are insulating materials that affect the contact between the ground wire and the surface of the workpiece, and avoid using aging ground wires。