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固化区彩涂卷生产线操作流程

返回列表 来源: 发布日期: 2021.04.05

固化区彩涂卷生产线操作流程

操作范围:初涂固化炉、精涂固化炉、废气焚烧炉。

描述:彩涂卷钢带从辊涂机出来,经过一段流平区即进固化炉,钢带湿涂层在热风炉

IMG_5740

彩涂卷烘干后形成一定厚度的干膜洗场管理标准:班前:将固化炉膛的浮污物清除,启动循环风机及排气风机进行空气,清理可燃气体浓度报警装置,核准爆炸浓度下限的设定值。确认可燃气体浓度报警器与固化炉加热装置的系统连锁有效,分别按初、精涂固化工艺的加热曲线分段升温。焚烧炉洗炉并升温至设定值。班后:在加热器停止工作后,循环风机及排气风机仍然持续工作一段时间,让炉子冷却并清除炉内废气,打扫炉区周围卫生。
生产操作流程:
固化炉:炉内的温控曲线与钢带厚度、涂料的种类、 彩涂卷涂厚度及机组速度等工艺条件有直接关系,虽然可以根据经验来制定其预设值,但最终应根据对干膜性能的测试来校正其准确值,因此,在生产过程中,应定期在涂层固化并冷却到常温后做在线的MEK和铅笔硬度的测试,随时调整炉温曲线。
焚烧炉:生产过程中,随时检查焚烧情况,即通过炉温和炉压来判断焚烧效果,并利用烟囱前的阀门来调节。另要通过废气输送风管闸板的开合控制好固化炉与焚烧炉之间的压力平衡点关于炉区的操作原理和安全事项。
Scope of operation: primary coating curing furnace, fine coating curing furnace, waste gas incinerator.
Description: the color coated coil steel strip comes out of the roller coating machine and enters the curing furnace through a section of leveling area. The wet coating of the steel strip is applied in the hot blast furnace.
The color coating roll will form a certain thickness of dry film after drying. The management standard of washing yard: before shift: remove the floating dirt in the curing furnace, start the circulating fan and exhaust fan for air, clean the combustible gas concentration alarm device, and approve the set value of the lower limit of explosion concentration. According to the effective heating curve of the primary curing system and the heating alarm of the fine curing system, confirm the temperature. Wash the incinerator and raise the temperature to the set value. After shift: after the heater stops working, the circulating fan and exhaust fan still work for a period of time to cool the furnace and remove the waste gas in the furnace and clean the surrounding area.
Production process:
Curing furnace: the temperature control curve in the furnace is directly related to the process conditions such as the thickness of steel strip, the type of coating, the thickness of color coating coil and the speed of the unit. Although the preset value can be formulated according to experience, the accurate value should be corrected according to the test of dry film performance, After the coating is cured and cooled to room temperature, the on-line MEK and pencil hardness test should be carried out regularly, and the furnace temperature curve should be adjusted at any time.
Incinerator: during the production process, check the burning situation at any time, that is, judge the burning effect by furnace temperature and pressure, and use the valve in front of the chimney to adjust. In addition, the pressure balance point between the curing furnace and the incinerator should be well controlled through the opening and closing of the air pipe ram for waste gas transmission, and the operation principle and safety matters of the furnace area should be well controlled.


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