Steel rolling heating furnace

Abstract

The invention discloses a steel rolling heating furnace. The steel rolling heating furnace comprises a furnace body and a water beam arranged in the furnace body. A heat-resistant sliding block is arranged on the water beam. The face, in contact with the water beam, in the heat-resistant sliding block is of an integrated arc structure. According to the steel rolling heating furnace, since the face, in contact with the water beam, in the heat-resistant sliding block is of the integrated arc structure, the contact area, with a steel blank, of the arc face is increased, the longitudinal expansionforce in the heat-resistant sliding block is effectively eliminated, the situation that a longitudinal water pipe is broken due to the longitudinal expansion force of the heat-resistant sliding blockis avoided, heat transfer of the heat-resistant sliding block to the longitudinal water pipe is enhanced, the temperature of the heat-resistant sliding block is effectively lowered, longitudinal expansion force generated in the heat-resistant sliding block is reduced, and transverse breakage of the longitudinal water pipe is avoided; meanwhile, the arrangement mode is simple in production technology and low in cost, the blowing down maintenance frequency can be effectively reduced, the blowing down maintenance time can be effectively shortened, so that purposes of increasing the yield, savingenergy and reducing the consumption are achieved; and the problems that the heat-resistant sliding block is worn, disengaged and the like are solved.

Description

technical field [0001] The invention relates to the field of heating furnaces, in particular to rolling heating furnaces. Background technique [0002] The heating furnace is an important equipment in the rolling mill. Its function is to heat the steel ingot or billet to the rolling temperature. In the walking heating furnace, the steel ingot or billet is placed on the water beam equipped with a heat-resistant slide The beam pushes the ingot or billet from the rear of the furnace to the head of the furnace to complete the heating. [0003] Since the billet is continuously pushed on the walking beam, during the production process, the sliding surface of the heat-resistant slider will be severely worn and the welding part of the heat-resistant slider will be fractured transversely, resulting in the leakage of water in the water beam and the furnace must be shut down. affect normal production. There are three main reasons for this phenomenon: 1. The longitudinal expansion for...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the old-fashioned heat-resistant sliders of the steel rolling heating furnace in the prior art are easy to wear and fall off during the tapping process, and cannot adapt to subsequent production, so as to provide a steel rolling heating furnace. The heat-resistant slider cancels the quarter arc (radius about 8-10mm) on both sides of the original contact surface and replaces it with the whole surface, so that the integrated arc structure increases the contact area of ​​the billet, which is beneficial The heat transfer from the heat-resistant slider to the water beam is uniform, which further strengthens the heat transfer from the heat-resistant slider to the water beam, thereby effectively reducing the influence of the thermal expansion force generated by the heat-resistant slider

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