Clogging of the nozzle so that the cooling strip waves rolling in the longitudinal direction of the local thermal expansion is formed. To clean the nozzles. Sticky tape off the roll or disorders caused tension rolled off, causing the strip and roll fever contact area dramatically, leading both to stick together. Roll change periodically partial wave-shaped rolls along the circumference of local heating and serious cause uneven expansion, or roll subcutaneous inclusion, as well as roll eccentricity. Immediately suspend rolling, so roll cooling or replace idle rollers. Slight indentation work roll bonding stamping or rolling into debris or other reasons. Roll change between cutting edge crack edge burr pickling, rolling force is too large. Pickling and rolling shear force control. Scratch various guide rollers and strip speed inconsistent plate in a foreign body, auxiliary equipment and strip of non-normal contact. Regularly check various auxiliary equipment. Rolling wear the scars of the work roll surface bonding serious straightening machine, sticky roller serious cracks, concave surface defects and foreign matter into the strip rolling roll change. Roll edge pickling incoming overflow overflow serious side, too small and winding tension straightening machine parameter fluctuations, rolling force instability, the entrance to the edge device is not used or failure. Immediately slow down, use the right side of the device or on the side of the device to adjust. Heart-shaped head winding reel tape tension, too much tension in the rolling process. Adjust the tension. Collapse of the whole process of rolling roll winding tension is less than the set tension. Adjust the winding tension. Poor pumping heart of the plate-shaped strip head and head of the winding tension is small. Good control of winding tension and head flatness. Pickling volumes pyramid tower, winding tension, there is a string between the reel and roll heart moving, improper discharge volume operation. Proper discharge volumes, the reasonable control of winding tension. Causes cold mill strip off with what? How to deal with post-break? A: The cause broken with the following aspects in the rolling process reasons: 1) incoming reasons. Incoming serious quality defects, such as scrap prices pushed straightening machine, less serious spill and serious side pickling acid or too severely uneven thickness, shape edge wave or waves can cause broken belt in the middle. 2) equipment failure. Electrical, hydraulic control system failure or system failure, a common tension fluctuation, the tension disappears, parking and other hydraulic systems. 3) operational failure. Breaking with the operation caused by the accident is more common, such as found wandering the strip, incoming defects not slow down or stop in time; the choice is unreasonable plan passes, pass deformation is too large, resulting in rolling pressure, plate-shaped difficult to control, before the pass, after much tension, pull off the strip; strip passes before somewhere thickness fluctuations (thinning or thick), after the pass or will not slow down in time tension control off, causing broken belt and so on. 4) Roll burst causing broken belt, belt, it should immediately stop, pull the rack strip and work rolls, intermediate rolls pull out, check the work rolls, intermediate roller is sticky roller or damage, slightly sticky roller Whetstone available surface polished, serious damage straightening machine principle, should be replaced by back-up rolls. Also off the band must be cleaned of debris racks, if rolling off the main drive shaft safety loop mechanical personnel should be notified immediately replace the safety ring, or can not roll out of work. It may be necessary to open the injection emulsion, and the residue washed clean in a rack Suixiao strip. After replacing the rollers, open the first volume of steel rolling speed is not too fast, and carefully check the quality of its surface. Three steel straightening machine, straightening machine, free debugging quality assurance provided by the Zhengzhou City, China Metallurgical Machinery Manufacturing Co., Ltd. Zhengzhou City, China Metallurgical Machinery Manufacturing Co., Ltd. (www.zhong-ye.com) strong, credible, in Zhengzhou, Henan waste treatment equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Metallurgical machinery and you hand into the brilliant, for a better future!