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真空等離子噴涂
真空等離子噴是將等離子噴涂工藝在低壓保護(hù)性氣氛中進(jìn)行操作,從而獲得成分不受污染、結(jié)合強(qiáng)度高、涂層致密的一種工藝方法。真空等離子噴涂是將等離子噴槍、工件及其運(yùn)轉(zhuǎn)機(jī)械置于低真空或選定的可控氣氛的密閉室里,在室外控制噴涂過(guò)程,通過(guò)真空和過(guò)濾系統(tǒng),保持真空室一定的真空度。當(dāng)?shù)入x子射流進(jìn)人低真空環(huán)境,其形態(tài)和特性都將發(fā)生變化。
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熱噴涂
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產(chǎn)品描述
真空等離子噴是將等離子噴涂工藝在低壓保護(hù)性氣氛中進(jìn)行操作,從而獲得成分不受污染、結(jié)合強(qiáng)度高、涂層致密的一種工藝方法。真空等離子噴涂是將等離子噴槍、工件及其運(yùn)轉(zhuǎn)機(jī)械置于低真空或選定的可控氣氛的密閉室里,在室外控制噴涂過(guò)程,通過(guò)真空和過(guò)濾系統(tǒng),保持真空室一定的真空度。當(dāng)?shù)入x子射流進(jìn)人低真空環(huán)境,其形態(tài)和特性都將發(fā)生變化。真空等離子噴涂主要特點(diǎn)如下:
(1)等離子射流束長(zhǎng),粒子受熱充分
(2)粒子速度高
(3)金屬粒子幾乎無(wú)氧化
(4)基體預(yù)熱溫度高
(5)噴涂距離對(duì)除層性能的影響小
(6)沉積速率高
(7)制備的涂層性能優(yōu)異
Vacuum plasma spraying is a process method in which the plasma spraying process is operated in a low-pressure protective atmosphere, resulting in a process method with uncontaminated components, high bonding strength, and dense coatings. Vacuum plasma spraying is the plasma spray gun, the workpiece and its running machinery in a low vacuum or selected controlled atmosphere of the closed chamber, in the outdoor control of the spraying process, through the vacuum and filtration system, to maintain a certain vacuum chamber vacuum. When the plasma jet enters the low vacuum environment, its morphology and characteristics will change. The main features of vacuum plasma spraying are as follows:
(1) The plasma jet beam is long and the particles are well heated.
(2) High particle velocity
(3) Almost no oxidation of metal particles
(4) High substrate preheating temperature
(5) Low influence of spraying distance on delamination performance
(6) High deposition rate
(7) Excellent performance of prepared coatings
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