EN
RISHBIN CO., LTD

Causes and Countermeasures for Other Abnormal Phenomena in Slitting Processing

(1) Uncut: Although it passed through the slitting line, it was not cut off, which was called uncut.

A : Uncut due to bending upward of slitter shaft. The nut of lock knife is not tightly fastened; the screw thread of the lower screw is worn.

B : Uncut caused by the deflection of the slitter shaft. The load of the slitter shaft is composed of the shearing load and the breakage strength of the apron. When the cutter is worn, the shearing load increases, and the cutter shaft is deflected during the slitting process, resulting in uncut.

(2)Pollution

A : The surface fibers of the tension plate are detached and adhere to the steel plate.

B : Garbage, oil, etc. on the material are accumulated in the tension plate and then transferred to the steel plate.

C : Contaminants on the equipment are transferred to the steel plate.

D : Gloves and the like adhere to the steel plate after being contaminated.

(3)Poor width size

A : A poor size caused by the lateral oscillation of the cutters. A poor size caused by the lateral swing of the cutter and the difference between outer diameter of the cutters. The lateral swing value of the cutters can never be zero, and the lateral swing value of the general load is about 0.03-0.05 mm. The reason are the accuracy error of the blade thickness, the inner diameter and the width of distance piece, and the warpage caused by the lateral stress when the thick plate is sheared.

B : A poor width size caused by the lateral warpage of the steel plate. Products that are cut in the lateral warping state are measured more than the setting value of the matching knife.

C: Matching error of SPACER and the tool. The thickness accuracy of the SPACER and the tool is 0.005. When the number of pieces is large during matching the knife, the cumulative error becomes large.

D: The poor size caused by the poor upper setting. The width of the product cut by the metal slitting line is always slightly lower than the size of matching knife on the side of the product, so it is necessary to predict the degree of this difference in advance. Refer when the size of the SPACER is determined during the knife is placed on the side of the product.

E: The change in width caused by the shearing method. Compared with the driving mode shearing, the tension of the steel coil in the straight-pull shearing is increased, the lateral warpage is lost, and the size is also deteriorated.

F: The poor width caused by edge shearing. Reasons include that the adjustment of side guide is poor, and the width of the base material varies greatly. If the waste edge is not cut, the width will be poor.

G: The poor width caused by extremely large take-up tension of winding machine. When winding, once the tension is too large, the steel plate is stretched longitudinally, the direction of width is reduced, and the width of the product is narrowed.
  • Metal Slitter Hydraulic Feeding Trolley

    Metal Slitter Hydraulic Feeding Trolley

    September 3, 2018As the degree of industrialization becomes higher and higher, in all industries, everyone plays their imagination and creativity makes it easier for people to work, especially for manual workers. As a...view
  • Use Regulations of Sectional Machine Processing Equipment

    Use Regulations of Sectional Machine Processing Equipment

    August 13, 2018Jinzheng Machinery, Which is well-known as metal processing equipment manufacturers in the world, is an national high-tech enterprises. Our company specializes in the R & D and production of sheet...view
  • Analysis Main Reasons for Abrasions of Steel Sitting Machine

    Analysis Main Reasons for Abrasions of Steel Sitting Machine

    November 22, 2018In the slittingprocess, if the steel coil is carried out in a relaxed state, the internal layers of the steel coil will slide. This will lead to various abrasions on the surface of the steel, as well ...view
  • The Importance of Tension Controller to Slitter

    The Importance of Tension Controller to Slitter

    May 14, 2018Tension is one of the most important technical index in the operation of slitter, which will be involved in the unwinding and winding of the equipment. In order to control the tension of the slitter b...view
  • Slitting Unit Lubrication System

    Slitting Unit Lubrication System

    July 17, 2018The steel coil slitting line is used to uncoil, level, slit, and wind coils of different specifications into different width coils. This kind of production line has a high degree of automation, and th...view
  • Factors Should be Considered When Choosing Slitters

    Factors Should be Considered When Choosing Slitters

    May 14, 2018We always hope to buy equipment with good actual operation performance no matter what types they are, slitter is not an exception, of course. After all, only with more convenient operation can we save...view