Method For Reducing Surface Abrasion Of Large Diameter Seamless Steel Pipe

The bruising of the large-diameter seamless steel pipe surface in the reheating furnace is also a common defect. It is mainly because it is on the tapping roller of the step-type reheating furnace or on the auger of the screw-propelled reheating furnace. Produced by relative sliding with the exit roller or screw.

The tapping roller of the stepping reheating furnace is in the stepping protection of the cantilevered dish. It is in the high-depression working environment for a long time. Because the elevation of each group of rolling rollers is not completely consistent, and the large diameter after heating The seamless steel tube will bend. When the walking beam places the heated large-diameter seamless steel pipe on the tapping path, it is possible that only a few roller supports the large-diameter seamless steel pipe. This increases the roller and the roller. The contact stress of the surface of the road.

At this time, when the large-diameter seamless steel pipe is stationary and the roller is rotated, a large relative sliding between the pipe and the rotating powder roller path is generated, thereby scratching the surface, especially when the rough surface of the furnace is dry. Steel time. The surface of the steel pipe that is not glazed on the surface will stab the surface of the steel pipe and further aggravate the surface of the waste bamboo.

The propeller-type reheating furnace is used to heat large-diameter seamless steel tubes. The movement of steel pipes in Shanghai is achieved by the rotation of the auger. The contact stress and relative sliding between the large-diameter seamless steel pipe and the auger The speed is relatively large, so it is inevitable that the surface will be scratched. A few days ago, there was no way to completely eliminate the surface abrasion of large-diameter seamless steel pipes. Just try to find ways to reduce the degree of bruises and bruises.

The degree of bruising on the surface of the large-diameter seamless steel pipe and the surface of the step-reheating furnace and the surface of the auger of the screw-type reheating furnace. This is related to the surface of the IV and the surface of the screw. The contact stress between them is related to the relative sliding speed. In order to reduce its surface scratches, the following methods are mainly used:

1The surface of the roller and the surface of the auger will be released to improve the surface hardness and smoothness; 2The roller or spiral rod is made of high-resistance alloy steel; 3The water cooling technology is used in the thick road; When going to the ramp, slow down the rotation speed of the stick (or make it stand still), and then gradually increase the roller speed to reduce the relative turbulence speed of the surface of the large-diameter seamless steel tube and the roller table.

This function can be electrically Control system to achieve; 5 to strengthen the inspection of the roller height and timely adjustment. As far as possible to ensure that the level of the roller is consistent; 6 to ensure that the waste bamboo is heated evenly to prevent the steel pipe from bending in the heating process.

A worker from a steel pipe company, which is located in China.