Common defects and control methods of section steel
Last article we said the causes of steel defects, this article we look at the control method of steel defects.
1. The section steel Angle is not full
The control methods are as follows: (1) improve the pass design, strengthen the mill adjustment operation, and rationally distribute the reduction; (2) Install the guide device correctly, and replace the pass and guide plate with serious wear in time; (3) Adjust the reduction amount according to the temperature of the rolled piece to make the edges and corners filled well.
2. The shape steel size is out of whack
Control method: (1) Install each part of the mill correctly; (2) Improve the pass design and strengthen the mill adjustment operation; (3) Pay attention to the wear of the hole, and when replacing the finished hole, consider replacing the finished front hole and other relevant holes at the same time according to the specific situation; (4) Improve the billet heating quality to achieve uniform billet temperature.
China h beam section producers--GNEE Group
3. Section steel wave
Control method: (1) When replacing the finished product hole in the middle of rolling, the finished product front hole and the finished product front hole should be replaced at the same time according to the characteristics of the product and considering the specific situation; (2) Strengthen the rolling adjustment operation, rationally distribute the reduction amount, and tighten the parts of the rolling mill to prevent the wrong teeth of the rolling groove, so that the rolled parts extend evenly; (3) Improve the billet heating quality to achieve uniform billet temperature.
4. Section steel cutting
Control methods: (1) Improve the incoming material condition, take measures to avoid excessive bending of the rolled piece head, and keep the incoming material direction perpendicular to the cutting plane; (2) Improve the equipment condition, adopt a saw blade without bending or small curvature, properly select the thickness of the saw blade, the saw blade (cutting edge) wear should be replaced in time, correctly install and adjust the cutting (saw) cutting equipment; (3) Strengthen the operation, and at the same time, the number of cutting (saw) should not be too much to avoid the rise and fall of steel and bending. To ensure the necessary end cutting amount, the hot rolled drawing part is cut.
China h beam section Distributors--GNEE Group
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China angle steel producers--GNEE Group
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