Years of experience in steel rust removal construction: the bonded steel bar has four practical methods of steel rust removal: chemical rust removal, sand blasting rust removal, water knife rust removal, special steel bar rust removal and manual rust removal.

　　已绑扎好的钢筋除锈也叫钢筋原位除锈，因已绑扎好的钢筋不能撤除、常见的除锈东西不能进入钢筋笼子内部，钢筋除锈比较困难，绑扎好的钢筋怎样除锈要根据钢筋的锈蚀程度、钢筋除锈的要求来定。

　　The rust removal of the tied steel bar is also called in-situ rust removal of the steel bar. Because the tied steel bar can not be removed and the common rust removal things can not enter the steel cage, it is difficult to remove the rust of the steel bar. How to remove the rust of the tied steel bar depends on the degree of the corrosion of the steel bar and the requirement of the rust removal of the steel bar.

　　一般来讲锈蚀较轻的已绑扎好的钢筋能够选用化学除锈法，即直接喷涂（专用东西）钢筋除锈剂即可，喷涂时要沿着钢筋喷洒。锈蚀严峻的钢筋需做预处理后再喷涂钢筋除锈剂，预处理的办法有钢筋除锈专用东西人工除锈、泥工用的轰动泵轰动除锈、超高压水枪除锈等预处理办法。

　　Generally speaking, the lightly corroded bonded steel bars can use chemical rust removal method, that is, direct spraying (special things) of steel bar rust removal agent can be, spraying along the steel bar when spraying. The severely corroded steel bars need to be pretreated and then sprayed with steel rust remover. The pretreatment methods include manual rust removal of special things for steel bar rust removal, sensational rust removal of mud pump, super high pressure water gun rust removal and other pretreatment methods.

　　一般来讲锈蚀较重的已绑扎好的钢筋宜选用喷砂除锈的办法。喷砂除锈是运用空压机发生的高压空气做动力，运用沙粒的击打、摩擦力去除钢筋外表的锈渣。钢筋喷砂除锈所需设备多，有螺杆空压机、空气储存罐、砂罐及衔接的高压气管、耐磨高压砂罐和喷砂的枪头。并且喷砂除锈对操作工人的要求高，需必定的操作经验不然容易发生事故，并且操作人员较多（一般都标配三人以上），人工成本较高。喷砂除锈除了成本高，还有就是污染严峻，现在查的严一般不能喷砂除锈，但喷砂除锈作用好（卖相特好），相对来说是的钢筋除锈办法。

　　Generally speaking, sandblasting is the best way to remove rust for heavily corroded bonded steel bars. Sandblasting rust removal is the use of high-pressure air generated by the air compressor as power, the use of sand striking, friction to remove the steel bar surface rust slag. There are many equipments needed for sand blasting and rust removal of reinforcing bars, such as screw air compressor, air storage tank, sand tank and connecting high-pressure pipe, wear-resistant high-pressure sand tank and sand blasting gun head. Moreover, sand blasting and rust removal have high requirements for operators, which require certain operating experience or they are prone to safety accidents, and there are more operators (generally more than three people) with higher labor costs. In addition to the high cost of sand blasting rust removal, there is also serious pollution. Now the strict environmental inspection generally can not be sand blasting rust removal, but sand blasting rust removal effect is good (sell very good), relatively speaking, the safest method of steel bar rust removal.

　　一般来讲锈蚀严峻的已绑扎好的钢筋宜选用水刀除锈的办法。锈蚀严峻的钢筋经过水刀（700公斤以上的超高压水）清洗后，基本上能整理干净钢筋外表就大部分锈蚀，包含氧化皮都能整理。这种除锈办法投入高（设备都在8万元以上）、耗电量高（90千瓦），并且比较危险（打到人立马残废），没有经过培训的不能参加施工。但这种钢筋除锈办法非常，不像喷砂除锈那样损害钢筋外表，对钢筋基本没有损害，仅有的坏处就是和喷砂除锈一样会有死角（一般都选用钢筋除锈东西辅佐除锈）。

　　Generally speaking, the method of removing rust by water knife is suitable for the steel bar which has been bonded with severe rust. After cleaning by water knife (over 700 kilograms of ultra-high pressure water), the steel bars with severe corrosion are basically clean, and most of them are corroded, including oxide skin. This method of rust removal has high investment (equipment is more than 80,000 yuan), high power consumption (90 kW), and is dangerous (hit the disabled immediately), and can not participate in construction without professional training. But this method of removing steel bar rust is very safe. It does not damage the appearance of steel bar as sand blasting does. It basically does not damage the steel bar. The only disadvantage is that there will be dead angle just like sand blasting.

　　一般来讲已绑扎好的钢筋不管锈蚀轻重都能够选用三超钢筋除锈东西进行除锈。钢筋除锈东西每人一把（一般6个工人配套1个管理员、及时修正除锈东西），单体功率低，但整体功率高，特别是在包工情况下功率更高。

　　Generally speaking, the bonded steel bars, regardless of the degree of corrosion, can use the three super steel bars for rust removal. Rebar rust removal items are handled by each person (generally 6 workers are matched with 1 administrator, and rust removal items are corrected in time). The unit power is low, but the overall power is high, especially in the case of contract work.

　　已绑扎好的钢筋原位除锈都需求撤除模板，特别是喷砂除锈和水刀除锈，如不能撤除模板还要除锈只能选择钢筋除锈剂进行除锈，但钢筋除锈所用的喷涂东西都是专用或定制的，特殊部位如墙筋、柱筋需运用两三米的弹性喷杆进行喷涂钢筋除锈剂，并且好是夜间进行（能看清喷砂作用）；特殊部位如板筋需运用钢筋除锈东西预除锈后再喷涂钢筋除锈剂，不然除锈作用不抱负，因板筋运用的钢筋都是盘圆或盘螺，盘螺和盘圆钢筋在拉直的时分发生高温，高温后锈蚀的钢筋化学除锈很难搞，需打磨后再喷涂钢筋除锈剂进行除锈。

　　In-situ rust removal of bonded reinforcing bars requires removal of formwork, especially sand blasting and water knife. If the formwork can not be removed and rust removal can only be carried out by using reinforcing bar rust removal agent, but the spraying materials used for reinforcing bar rust removal are special or customized. Special parts such as wall bars and column bars need to be sprayed with two or three meters elastic spraying rod for reinforcing bar rust removal agent, and preferably at night. Special parts such as steel bars need to be PRE-RUSTED and sprayed with reinforcing steel rust remover after rust removal, otherwise the effect of rust removal is not ambitious, because the reinforcing steel bars used are disc or disc snails, disc snails and disc steel bars occur high temperature during straightening, chemical rust removal of Corroded Reinforcing steel bars after high temperature is very difficult, and it is necessary to spray reinforcing steel rust remover after polishing. Rust.

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　　The above contents are arranged and published by Jinan Reinforcement Wholesale Factory. For more information, click on our official website for consultation: http://www.jzqgc.com/