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目前,比较普遍的是用油漆等来保护材料不受腐蚀,但用什么方法和工具去油漆,却很有讲究。一般的刷涂、滚涂等已是落后的方法了,代之而起的是用无气喷涂新工艺进行涂装施工,对材料的保护才会有更好的经济效益和社会效益。四川长江机械厂生产的长江牌喷涂机就是用世界先进的高压无气喷涂技术研制的一种涂装施工机器。高压无气喷涂技术,国际上50年代着手开发。最早应用的是美国,尔后,日、德、美、法等国相继使用。所谓高压无气是对低压有气而言的。一般常见的喷漆法是利用压缩空气在喷枪喷嘴处形成负压将漆流带出并分散成雾滴状涂覆在物面上,因而有压缩空气随漆流一起喷出,故称为“有空气喷涂”,面常用的压缩空气又是O.4～0.6 MPa的低压,且涂料在喷出前是处于低压状态的。因此,这种喷涂方法称为“压低有空气喷涂”。高压无气喷涂是把涂料通过无气喷涂机直接增至8～40 MPa的高压,并迫使涂料通过无气喷枪,经特殊形式的无气喷嘴处于高压状态的涂料立即剧烈膨胀雾化成极细粒状喷至物面,因而喷出的涂料中不得有压缩空气,而涂料本身被增至高压,故称“高压无气喷涂”。这种喷涂技术,具有涂装质量好,工作效益高,对涂料的适应性强,施工方便,易于实现涂装施工的
At present, it is more common to use paint to protect the material from corrosion, but by what means and tools to paint, but very particular about. General brushing, roller coating is outdated method, replaced by the new process is airless painting coating construction, the protection of the material will have better economic and social benefits. Yangtze River Machinery Plant in Sichuan Yangtze River spraying machine is the world’s most advanced high-pressure airless spraying technology developed a painting construction machinery. High-pressure airless spraying technology, the international development of the 50’s started. The earliest application is the United States, and later, Japan, Germany, the United States, France and other countries have been using. The so-called high-pressure gas is low-pressure gas in terms of. Commonly used spray paint is the use of compressed air at the gun nozzle to form a negative pressure to paint flow out and dispersed into a drop-like coating on the object surface, so compressed air with paint flow together, it is called “ Air Spray ”, the commonly used compressed air surface is O.4 ~ 0.6 MPa low pressure, and the paint is in a low pressure state before ejection. Therefore, this method of spraying is called “air blasting down.” High-pressure airless spraying is the coating through the airless sprayer directly to the high pressure of 8 ~ 40 MPa, and forced the paint through the airless spray gun, a special form of non-gas nozzle in the high pressure state of the paint immediately violent expansion atomized into very fine particles Spray to the object surface, so there should be no compressed air spray paint, paint itself was increased to high pressure, it is called “high pressure airless spray.” This spraying technology, with good coating quality, high efficiency, strong adaptability to paint, easy construction, easy to achieve the coating construction