Chinese  |  Engish
Enamel/enamel coating equipment production line/sandblasting, coating, drying, sintering production line/fully automatic enamel steel pipe production line
2023.05.25

 Pretreatment

       In order to achieve the purpose of enamel anti-corrosion, the porcelain layer must be tight, free of voids, and have strong adhesion to the underlying steel. For this reason, it is necessary to clean and pre-treat the steel.

There are two pre-treatment methods: chemical method and physical method.
 
Most manufacturers who choose physical methods use sandblasting technology. Sand blasting can not only clean the surface, but also make the surface rough, which is conducive to increasing the tightness of the ceramic layer and steel surface. The factors to be considered when selecting the sand blasting method include surface stains, surface roughness, and economy.
 
Chemical cleaning usually uses the acidic method. For steel, sulfuric acid is usually used for cleaning. For bimetallic metals such as aluminum, alkaline solutions (such as NaOH) are usually used for cleaning. After cleaning, the steel must be cleaned with water to remove the residual acid solution.

 Enameling

There are usually two types of coating for conventional water heaters: wet method and dry method.
 
The wet process mainly includes spraying, immersion coating, and rolling coating methods. By rotating the inner liner in three-dimensional space, all internal surfaces are coated with glaze. Excess residue and liquid must be removed to ensure that the steel surface is only covered with a thin, uniform, and continuous layer of glaze. There are many factors that affect the quality of enamel, such as the viscosity of the glaze, the pre-treatment of steel, the adhesion of the metal surface, the quality of welding, and the structure of the inner liner. Wet coating is more popular in the United States.
 
The main drying method is electrostatic spraying. Electrostatic spraying has many advantages compared to wet systems. It reduces costs, saves energy, and achieves a material utilization rate of 97%. In addition, it also reduces pollution to the environment. At present, some large water heater manufacturers in Europe mostly use electrostatic spraying method.
 
Most water heater manufacturers only spray one layer of enamel. Only for applications with more stringent temperature and pressure conditions, such as water tanks, two layer spraying is used. Some use a special pre coating to cover the enamel.

Enamel firing

      At 700 ℃, the enamel begins to melt and form a ceramic layer. The baking temperature is generally maintained between 830-860 ℃, with a duration of 7-15 minutes. The reddened inner liner is removed from the furnace and gradually cooled to room temperature. Usually, the enamel firing process is continuous and can be repeated again to form a second layer of enamel. Even repeated multiple times to obtain the multi-layer enamel required under harsh application conditions.

GGH Enamel Enamel Steel Pipe Automatic Coating, Drying, and Sintering Production Line

Fully automatic enamel steel pipe (including pre-treatment coating, coating, drying and sintering) production line

Enamel high-temperature sintering furnace

Water heater liner sandblasting and coating system equipment

Inner liner powder spraying equipment

Tunnel type enamel sintering furnace

Water heater liner sandblasting and coating system equipment

 


关于良时智能 About Liangshi IntelRobot:
      上海良时智能科技股份有限公司(股票代码:837430 ),为全球客户提供表面处理系统解决方案,从业20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:
        1、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、自动化和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.

 

企业主导产品如下 :
        主营业务: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.

Copyright © 上海良时智能科技股份有限公司
沪ICP备05016443号-3
webmaster@shliangshi.com86-021-51035200 400-021-5767

沪公网安备 31012002002170号