彩钢板生产线固化区工人职责

操作范围:初涂固化炉、精涂固化炉、废气焚烧炉。

彩钢板生产线工艺描述:钢带从辊涂机出来,彩钢板生产线经过一段流平区即进入固化炉,钢带湿涂层在热风炉的脱水烘干后形成一定厚度的干膜。

现场管理标准: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洗炉,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。彩钢板生产线班后: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、涂层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压力平衡点。

Scope of operation: primary coating curing furnace, fine coating curing furnace, waste gas incinerator.

Process Description: the steel strip comes out of the roller coating machine and enters the curing furnace after passing through a section of leveling area. The wet coating of the steel strip forms a certain thickness of dry film after dehydration and drying in the hot blast furnace.

Site management standard: before shift: remove the floating dirt in the curing furnace, start the circulating fan and exhaust fan for air cleaning, clean the combustible gas concentration alarm device, and approve the set value of the lower limit of explosion concentration. Confirm that the system interlock of combustible gas concentration alarm and curing furnace heating device is effective, and raise the temperature in sections according to the heating curve of primary and fine coating curing process. 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 steel strip thickness, coating type, coating thickness and unit speed. Although the preset value can be made according to experience, the accurate value should be corrected according to the dry film performance test. Therefore, in the production process, the coating should be cured regularly and cooled to room temperature, and then the on-line MEK and pencil hardness test should be conducted, Adjust furnace temperature curve 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.