Hot Rolled Seamless Steel Tube Product Quality Management

Tube is necessary for the production of raw steel, tube quality directly affects the quality of steel products. First perforated tube straightness requirements must be met, tube bending than the standard requirements easily lead to perforation machine rolling card, it will not only affect the normal perforation puncher, affecting production rhythm, but also affects the ring furnace tube heating time, the adverse impact on some steel products quality. Secondly inclination on the perforated tube cutting process will produce some adverse effects. Cut diagonally through the large tube ends irregular or likely to cause uneven wall thickness perforated capillary, thus affecting the entire pipe dimensional accuracy. In order to avoid the impact of the quality of the steel tube product quality, must be strictly enforced tube inspection system and tube cutting system. Incoming inspection must be done in a timely manner, identify problems in time, do not stay hidden for the steel production. Heating the tube to ensure successful completion of a plastic tube having perforations sufficient critical process while the heating temperature and the heating time will have a huge impact on the performance of the steel pipe. The heating temperature is too high or the heating time is too long, will cause the tube had burned, decarbonization, and even lead to substandard steel chemical composition (carbon content failed), likely to cause the bulk of the quality problem, seriously affect the product yield. In order to ensure the stability of perforated tube and chemical properties of the ring furnace operation technical regulations should be strictly enforced, always check the furnace operating conditions encountered anomalies in time and make a record, and promptly notify the subsequent positions and quality management department good job tracking and processing. Hot-rolled seamless steel pipe production process perforation of the first deformation processes, perforated capillary quality directly affects the quality of the final product. Factors affecting the quality of capillary quality are: punching machine to adjust the parameters, the surface quality of the guides, the head surface quality, surface quality and immediate impact on the quality of the capillary is particularly serious. When a serious head or stick steel surface wear phenomenon occurs, is likely to cause skin capillary generated within Alice, Alice and the skin inside the pipe can not be eliminated or grinding, will lead directly to steel scrap judgment. Puncher adjustment parameters, especially within the pipe will produce the amount of warping head reach unreasonable. The tube will cause the hair warping or cracking guide surface wear serious. Although the outer skin can be reground Alice in testing, when the outside can also cause severe warping the entire root steel scrap. Shortage capillary tube is then cut through the wall to get semi-finished steel, the quality control unit is Accel hardest and most important part. Accel unit production of steel is the most obvious sign of an internal thread phenomenon, through barren rolling three-roll rolling machine whose inner wall of the tube after rolling can not eliminate the presence of traces of that thread. When the thick-walled pipe thread rolling problem is not obvious when the thin-walled tube rolling thread if improperly adjusted phenomenon will be very obvious, and will lead to uneven thickness of the final product exceeded, the wall thickness of the local area and even lead to excessive that become scrap steel pipe. Another factor affecting the quality of the mother pipe surface of the mandrel is the quality of the situation. Mandrel is rolling machine rolling tube-shaped tool in the table, determine the quality of the inner surface of blank pipe and the inner surface of the tube in the subsequent shortage of quality inspection can only be checked, but not grinding, can easily lead to the entire root of steel scrap judgment. Effect of the mother pipe is a factor in the quality of the final roll rolls have a certain life, when the roll wear to a certain extent, will lead to the production of severe shortage pipe thread appears, and poor ultra thickness requires adjustment or replacement in time roll, if you continue to use worn roll will result in serious quantities of product quality issues.