人们跟着日子水平的前进，通风设备变成了修建、企业等各个领域不可短少的一部分，也是社会的新向标。通风设备的配件之一风管；风管风角铁法兰风管、共板法兰风管，他们依据质料又分为好多种，一般常用的便是镀锌白铁皮风管，不锈钢风管；中不锈钢风管在运用进程中不免有保养不妥的时分；所以会长一些锈：

As people keep pace with the progress of the times, ventilation equipment has become an indispensable part of various fields such as construction and enterprises, and it is also a new direction of society. One of the accessories of ventilation equipment is the air duct; Air duct angle iron flange air duct and common plate flange air duct are divided into several types based on the material. The commonly used ones are galvanized white iron sheet air duct and stainless steel air duct; During the use of medium stainless steel air ducts, there may be times of improper maintenance; So there will be some rust:

1、首要除掉外表各种可见污物，然后用溶剂或清洗剂除油。

1. Firstly, remove all visible dirt on the surface, and then use solvents or cleaning agents to remove oil.

2、用钨钢铲刀铲去大面积锈蚀。

2. Use a tungsten steel shovel to remove large areas of rust.

3、用刮刀和钢丝刷除掉边角部位锈蚀。

3. Use a scraper and wire brush to remove rust from the edges and corners.

4、用锉除掉焊渣等杰出物和各种毛刺。

4. Use a file to remove outstanding objects such as welding slag and various burrs.

5、用砂布和钢丝刷进行收拾。

5. Clean up with sandcloth and wire brush.

6、用洁净抹布，也可用抹布沾取溶剂进行清洁并及时涂装底漆。

6. Use a clean cloth, or use a cloth dipped in solvent to clean and apply primer in a timely manner.

7、留神关于没有失效的耐性涂膜，可予以保存，并用砂布打毛旧漆外表，将涂膜残缺处打磨成斧型，清洁后直接涂漆。

7. Pay attention to the durable coating that has not failed. It can be preserved and the old paint surface can be roughened with sandcloth. The damaged parts of the coating should be polished into an axe shape, and then painted directly after cleaning.

还有一种简略的办法便是将法兰浸入盐酸中，原理是把锈还原成铁了，但此法有危险性，盐酸是腐蚀性物质，对人体有害，操作时要留神不要沾到人体上，还有弄好的法兰再用碱中和一下，不要直接沾手。

Another simple method is to immerse the flange in hydrochloric acid. The principle is to reduce rust to iron, but this method is dangerous. Hydrochloric acid is a corrosive substance that is harmful to the human body. When operating, be careful not to touch the human body. Also, neutralize the finished flange with alkali and do not touch it directly.