Online bright annealing equipment

1. Introduction of online bright annealing equipment:

Online bright annealing equipment can solve the problem very well. The solid solution treatment process of stainless steel welded pipe mostly adopts online black solid solution and acid pickling or off-line bright solid solution, which brings environmental protection problems. Bright annealing stainless steel equipment consists of IGBT transistor inverter medium frequency power supply cabinet and slot compensation capacitor cabinet. Metash, a power supply system, consists of induction heating coil, cooling water jacket, gas protection device and infrared thermometer. Metash, a bright solid solution system, consists of water-metash, water heat exchanger, external circulation water and cooling device, cooling system, pipe cleaning device and electrical control system.

2. Automation Workflow:

Bright annealing stainless steel equipment will heat stainless steel welded pipe with induction heating coil to the temperature required for solid solution, and complete the homogenization of austenite, that is, solid solution process. The graphite cooling fixture at the inlet end of the water jacket 1 is rapidly cooled, and the temperature is lowered below 800 C to prevent the precipitation of carbon and chromium in order to keep the solid solution effect. However, the cooling effect of indirect cooling always brings a small amount of carbon and chromium precipitation, and chromium precipitation rate is slower than that of carbon, resulting in chromium-poor zone (chromium-poor zone is the main cause of intergranular corrosion). However, the chromium-poor zone can be eliminated by insulating chromium in water jacket 1 between 550 and 750 C and providing a diffusion time for chromium. However, the sensitization zone of stainless steel is 550-750 (?) C, but because the rapid cooling of water jacket 2 graphite cooling fixture on welded pipe blocks the time effect of sensitization of stainless steel, the sensitization result will not appear. After cooling by water jacket 2, the temperature of the steel pipe should be below 130 C.

3, process characteristics:

The stainless steel pipe is heated by induction heating to the temperature required for solid solution (304 material 1040 C), and solid solution treatment is carried out in the sealed device with hydrogen as protective gas to improve the structure of the weld seam and eliminate the stress so as to enhance the corrosion resistance. The welded pipe after solid solution treatment can be changed by using hydrogen as protective gas. Light and speed up cooling. The stainless steel welded pipe is cooled by indirect cooling after heating to the solid solution temperature to keep the welded pipe bright.

4. Device parameters

操作规程

1、目的：
1.1 为了更好的保证设备正常运行，有效保证顺利生产，满足产品要求。
1.2 对设备进行有效保养。
1.3 编写合理的操作指导，确保生产计划和产品质量要求的达成。

2、使用范围：
焊管生产：制管部。

3、细则：
3.1 各班交接时确保有效的设备外部清洁，并有相关清洁记录。
3.2 上班前与交接班准确掌握好机台运作情况及时协调保证正常生产。注意水、气、电开启与否，打磨页轮、锯片、切割台是否正常。

4、开机：
4.0 开机前，按润滑要求，向各需加注润滑油的部位注射不同润滑油
4.1 首先检查各电器开关是否在0位，然后打开电源。
4.2 检查各机械部位及气动系统是否正常，如有异常现象，应及时检查排除,以免造成机械设备事故发生,。
4.3 检查变速器檔位是否正确，否则产生质量问题，切割机压力表是否达到0.5-0.7mpa，否则不能切割。
4.4 每天早晨上班先让电机空运行2-3分钟，变速器檔位对0，开车时操作者不准离开机床，不准做其他无关的事。
4.5 严禁戴手套开机，长袖衣服必须戴手袖，长头发必须戴帽子。
4.6 开机时旋转部位不得擦拭。
4.7 正确调整模具，不能大力下压，到位就行。
4.8 运行过程中，不准离开机床，不准做其他无关的事，注意焊口是否正常。
4.9 制管过程中剪带必须经过车间主任同意，存放到放带区，并协同吊带操作者在《生产流程卡》上详细记录，切不可随意丢弃。
4.10 操作中如发现各种异常现象，如冒烟、有焦味、保险丝突然烧断、指示灯突然熄灭及时关掉电源开关待检查清楚，排除故障后再开机操作。
4.11 产品的长度经常检查，不能超过6.01米，不能少于6.0米。严格控制在4mm之间。卸管架上的管不能超过总容量的95%，叫平口人员及时吊开，否则损伤由操作人负责。

5、停机：
5.1 待焊机停止同时关闭电源。
5.2 将量具用干净的棉布仔细擦拭干净，并放置在盒子里然后放进工具箱。
5.3 收拾机床上所有的工装夹具并各自分类归为，存放在工具箱里

6、现场整理或交接。
6.1 每班下班前20分钟打扫设备周边1米范围，包括设备对应的窗台。
6.2 清理地台板和机床底部，并将整台设备擦拭干净。
6.3 将报废不锈钢管拉出去指定位置。
6.4 下班时把自己所生产的规格及支数，穿孔管（支数）、废料（kg）在生产记录卡上登记完好，由车间质检统计，并填写好《生产流程卡》，交待接班人员机台运作情况及应该注意的事情。打扫好机台及区域卫生方可离开。