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大氣等離子噴涂
大氣等離子噴涂是一種材料表面強(qiáng)化和表面改性的技術(shù),可以使基體表面具有耐磨、耐蝕、耐高溫氧化、電絕緣、隔熱、防輻射、減磨和密封等性能。大氣離子噴涂技術(shù)是采用由直流電驅(qū)動(dòng)的等離子電弧作為熱源,將陶瓷、合金、金屬等材料加熱到熔融或半熔融狀態(tài),并以高速噴向經(jīng)過(guò)預(yù)處理的工件表面而形成附著牢固的表面層的方法。利用非轉(zhuǎn)移等離子弧作為熱源對(duì)噴涂材料進(jìn)行加熱、加速、涂敷。等離子焰流溫度高、流速快,因此噴涂效率高、涂層致密、結(jié)合強(qiáng)度高、基材表面熱影響區(qū)小。
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產(chǎn)品描述
大氣等離子噴涂是一種材料表面強(qiáng)化和表面改性的技術(shù),可以使基體表面具有耐磨、耐蝕、耐高溫氧化、電絕緣、隔熱、防輻射、減磨和密封等性能。大氣離子噴涂技術(shù)是采用由直流電驅(qū)動(dòng)的等離子電弧作為熱源,將陶瓷、合金、金屬等材料加熱到熔融或半熔融狀態(tài),并以高速噴向經(jīng)過(guò)預(yù)處理的工件表面而形成附著牢固的表面層的方法。利用非轉(zhuǎn)移等離子弧作為熱源對(duì)噴涂材料進(jìn)行加熱、加速、涂敷。等離子焰流溫度高、流速快,因此噴涂效率高、涂層致密、結(jié)合強(qiáng)度高、基材表面熱影響區(qū)小,并具備以下優(yōu)點(diǎn):
(1)可以熔化所有一切高硬度、高熔點(diǎn)的粉末,制備多種多樣化的涂層。
(2)噴涂的涂層平整光滑、致密度高,粉末沉積率高。
(3)噴涂過(guò)程中基體不帶電、不熔化,基體與噴槍相對(duì)移動(dòng)速度快,使得基體組織不發(fā)生變化。不會(huì)因?yàn)槭軣岫鴮?duì)基體的形狀和性能造成影響。
Atmospheric plasma spraying is a material surface strengthening and surface modification technology, which can make the surface of the substrate with wear-resistant, corrosion-resistant, high-temperature oxidation-resistant, electrically insulating, heat-insulating, radiation-resistant, abrasion-reducing and sealing properties. Atmospheric ion spraying technology is the use of DC-driven plasma arc as a heat source, ceramics, alloys, metals and other materials heated to a molten or semi-molten state, and sprayed at high speeds to the surface of the pre-treated workpiece and the formation of a firmly attached surface layer method. The non-transferring plasma arc is used as a heat source to heat, accelerate, and coat the sprayed material. The plasma flame stream has a high temperature and a fast flow rate, resulting in high spraying efficiency, a dense coating, high bonding strength, a small heat-affected zone on the surface of the substrate, and the following advantages:
(1) It is possible to melt all high hardness and high melting point powders to prepare a wide variety of coatings.
(2) The sprayed coating is flat and smooth, with high densities and a high rate of powder deposition.
(3) The substrate is not charged and does not melt during the spraying process, and the substrate and the gun move fast relative to each other, so that the substrate organisation does not change. The shape and properties of the substrate will not be affected by heat.
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