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粉末涂料热熔射喷涂法

发布时间:2015.05.12    点击数: 206801

        粉末涂料热熔射喷涂法亦称火焰喷涂或熔射法。

        (1)原理

        粉末粉料热熔射喷涂法的作用原理是:借助压缩空气将粉末涂料从熔射机的喷嘴喷出,并以高速通过从喷嘴外围出来的乙炔(或其他可燃气体)和氧气的火焰中,使其成为熔融状态喷射被涂特上,原理见图1

图1  粉末涂料熔射法的原理

1—粉末    2—冷却空气    3—氧气    4—可燃气体    5—粉末    6—火焰    7—熔融粉末    8—涂膜    9—工件

 

        (2)工艺流程

        粉末涂料熔射法的工艺流程如下:

   

        热熔射法工作一般要预热,粉末粒度孔径为0.180mm(80目)。

        粉末涂料熔射法施工中冷却空气的量、火焰温度、粉末通过火焰的时间和距离等均会影响涂装效果。

 

        (3)主要工艺参数

        粉末涂料熔射法施工中的主要技术参数:

        1)粉末喷出量:20~26g/min。

        2)喷射面积(涂层厚30μm):10~15㎡/h。

        3)涂敷效率:70%。

        4)粉末使用量:1kg/c㎡

 

        (4)特点

        1)此法适用于熔融温度和分解温度相差比较大的树脂,如聚乙烯、聚酰胺、含氟树脂等,故涂层性能好。

        2)此法获得的涂层比冷喷涂法锋利的涂层厚。

        3)此法适用于大型工件及室外施工。

        4)此法操作难控制。

        5)涂层易氧化。

        6)此法施工中温度不易控制,涂装效果差。

        7)涂层厚薄不均匀,粉末损失大。

 

        (5)粉末熔射喷涂法主要设备

        粉末涂料熔射喷涂法主要设备是喷枪,如1所示。三个液体从枪头喷出,粉末从枪头中心的铜管喷出,同心圆环上的冷却空气喷出管主要防止枪身温度升高,使粉末在枪内不熔化。喷枪的外围是气体喷出管,氧气和乙炔混合气体通过喷出管形成火焰,粉末通过火焰熔融而附着于工件上。

        此外,还有粉末散布法,喷涂法(工件预热)、低容量静电云雾室涂装法等,但这些方法工业化应用较少。

        关于QY千亿国际智能 About Liangshi InteRobot:
        上海QY千亿国际智能科技股份有限公司(股票代码:837430 厚积薄发 持续创新),为全球客户提供智能制造和表面处理系统解决方案,从业30多年,是一个集研发、设计、制造、工程安装、工程咨询于一体的专业化制造及自动化智能控制系统集成公司,能为客户解决:
        Shanghai Liangshi InteRobot Technology Corporation (Stock Code: 837430 Accumulate richly and break forth vastly; innovate continuously) provides surface treatment sandblasting system solution for global customers. By engaging in this industry for more than twenty years, we're a professional manufacturing and automatic intelligent control system corporation, which integrates researching, designing, manufacturing, project installation and project consulting. We can provide our customers with:
        1、化学表面处理喷抛丸、喷丸强化设备、热喷涂和涂装设备工艺系统解决方案和工艺装备;
              We provide process system solution and process equipments of surface treatment sandblasting shot blasting, shot peening, enameling, thermal spraying, coating equipment.
        2、智能制造自动化机器人应用工艺系统解决方案和工艺装备;
              We provide professional system solution and process equipments of automation and robot technology application.
        3、食品乳品、制药、生物、制冷、石油化工、船舶制造、能源、造纸、纺织系统领域承压系统集成整体解决方案;
              We provide professional integrated solution for pressure bearing system in fields of food dairy, biopharmaceutical, refrigerating, petrochemical, marine engineering, energy, paper-making, fabrics, etc.
        4、涂装环保设备:VOC废气、废水、粉尘处理和噪音治理系统工艺解决方案和工艺装备。
              We provide environment protection blasting and painting equipment: process solution and equipment of VOCs waste gas, waste water, dust, noise treatment system.
         5、专业提供压力容器设计制造:为食品乳品、生物制药、水处理、制冷、石油化工、船舶海工、电力能源、造纸纺织、有色金属等领域提供承压系统集成整体解决方案。
              Professionally provide the design and manufacture of pressure vessels: providing overall solutions for pressure system integration in the fields of food and dairy, biopharmaceutical, water treatment, refrigeration, petrochemical, shipbuilding and marine engineering, power and energy, paper and textile, non-ferrous metals and other fields.
        企业主导产品如下 The leading products of our company are as follows:
        主营业务:智能制造和表面处理工程系统集成的设计、研发、生产和销售。
        Main business: design, research, production and sales of surface treatment engineering system integration.
        六类主要产品:自动化涂装生产线、智能机器人喷涂系统、自动化喷抛丸生产线、智能机器人喷抛丸强化系统、自动化热喷涂系统、涂装节能环保设备。
        Six main product categories are: automatic painting production line, intelligent robot painting system, automatic shot/wheel blasting production line, intelligent robot shot peening system, automatic thermal spraying system, energy saving and environmental protection equipment for painting.
        产品主要应用于:新材料、新能源、工程机械、汽车制造、集装箱、船舶海洋工程、航空航天、港口桥梁、电子电气、环保工程、印刷造纸机械、医疗机械、纺织机械等领域。
        The products are mainly applied in: new materials, new energy, engineering machinery, automobile manufacturing, containers, marine engineering, aeronautics and astronautics, port bridges, electronic and electrical, environmental protection engineering, printing and papermaking machinery, medical machinery, textile machinery and so on.
        公司生产的表面工程系统集成具备智能、自动化的特点,可实现工业生产过程自动化控制,因而属于自动化装备。根据《高端装备制造业“十二五”规划》中对高端装备的定义“主要包括传统产业转型升级和战略性新兴产业发展所需的高技术高附加值装备”,公司产品属于高端装备,是为国民经济其他行业提供技术装备的战略性产业。
        The surface engineering system of our company integrates the characteristics of intelligence and automation, it can realize the automatic control of industrial production process, so it belongs to automatic equipment. According to the definition of premium-end equipment of 《The 125th programme of premium-end equipment manufacturing industry》, “it mainly includes the high technology and high value-added equipment required by traditional industrial transformation upgrading and the development of strategic new-emerging industries”. The company's products belong to the premium-end equipment, which is a strategic industry that provides technical equipment for the other industries of the national economy.
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