Crease-resistant carrier roller device in cold-rolled precise strip steel heating furnace

Abstract

The invention relates to a crease-resistant carrier roller device in a cold-rolled precise strip steel heating furnace. The device comprises a furnace body, wherein strip steel penetrates through the furnace body, carrier rollers which are arranged in an upper-and-lower alternating manner are installed on the strip steel, connecting shafts are mounted at two ends of each carrier roller, the connecting shafts extend out of two sides of the furnace body to be installed on lifting frames and connected with a main motor installed on one side surface of the furnace body, the lifting frames are symmetrically arranged on guide rails of fixed frames on left and right sides of the furnace body and move up and down along with the guide rails, lifting mechanisms are mounted on the fixed frames to control the lifting frames to move up and down, the lifting mechanisms on the left and right sides of the furnace body are connected with two ends of a transmission shaft respectively to rise and fall synchronously, and the lifting mechanisms on two sides are connected with lifting motors and rotating handles respectively and adjust heights of the lifting frames through the lifting motors or the rotating handles. According to the device, the carrier rollers are arranged in the heating furnace, the strip steel is prevented from drooping, and the tension of the strip steel can be divided into multiple segments under the action of the carrier rollers, so that the distribution of the tension of the strip steel in the width direction is more uniform, and the probability of cramps is decreased.

Description

technical field [0001] The invention belongs to the technical field of anti-wrinkle in a strip steel heating furnace, in particular to an anti-wrinkle idler device in a cold-rolled precision strip heating furnace. Background technique [0002] Cold-rolled steel strips generally have "side waves" or "middle waves" due to the reason of the rolling mill, and when the steel strip is subjected to the stress relief process in the heating furnace, because there is no support in the heating furnace cavity, the steel strip sags due to its own weight Tension is generated at the two ends of the steel strip entering and leaving the heating furnace. The ultra-thin (less than 0.15mm) precision strip steel will reduce the yield limit during the stress-relief heating process of 5 to 10 meters in the furnace body. Under the action of end tension, there will be a "cramp" phenomenon, which will cause the strip steel to form surface wrinkles under tension due to the different lengths of the sid...

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Problems solved by technology

[0002] Cold-rolled steel strips generally have "side waves" or "middle waves" due to the reason of the rolling mill, and when the steel strip is subjected to the stress relief process in the heating furnace, because there is no support in the heating furnace cavity, the steel strip sags due to its own weight Tension is generated at the two ends of the steel strip entering and leaving the heating furnace. The ultra-thin (less than 0.15mm) precision strip steel will reduce the yield limit during the stress-relief heating process of 5 to 10 meters in the furnace body. Under the action of end tension, there will be a "cramp" phenomenon, which will cause the strip steel to form surface wrinkles under tension due to the different lengths of the sides and the middle, similar to "pulling a towel hard". low rate

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