High-temperature-resistance and wear-resistance bilayer composite furnace bottom roller
A double-layer composite and high-temperature-resistant technology, which is applied in furnaces, heat treatment furnaces, furnace types, etc., can solve the problems of time-consuming and troublesome disassembly of rollers and roller shafts, and achieve good chemical stability, uniform connection strength, good balance effect
Inactive Publication Date: 2018-01-19
江苏亚太特种铸钢厂有限公司
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Problems solved by technology
The main defect of this hearth roller is that if the hearth roller needs to be repaired, the roller and the roller shaft must be disassembled, and the positioning pin shaft needs to be pulled out. Since the positioning pin shaft is pressed in through interference fit, the It is time-consuming and labor-intensive to pull out the positioning pin shaft, resulting in time-consuming and labor-intensive disassembly of the roller and the roller shaft
Method used
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Embodiment Construction
[0016] The present invention will be further described below according to the accompanying drawings and in conjunction with the embodiments.
[0017] The high-temperature-resistant and wear-resistant double-layer composite hearth roller shown in the attached figure includes a roller 1 and a roller shaft 2 connected to both ends of the roller 1; the roller shaft 2 is inserted into the mouth hole at the end of the roller 1 to form fit and fix it connection; the roller 1 is a double-layer composite cylinder, which is composed of an inner alloy layer 1.1 and a quartz ceramic layer 1.2 covering the outer layer; More than 1 (the present invention is 4) anti-loosening screws 5, the anti-loosening screws 5 radially penetrate and threadedly connect the wall of the hole hole at the end of the roller 1 to insert into the roller shaft 2, in this embodiment, the anti-loosening screws 5 Uniformly distributed on the circumference of the connection between the notch hole at the end of the rol...
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The invention discloses a high-temperature-resistance and wear-resistance bilayer composite furnace bottom roller. The bottom roller comprises a roller, and roller shafts connected to two ends of theroller; the roller shafts are inserted in stop holes at the end parts of the roller to form cooperation and fixed connection; the roller is a bilayer composite cylinder, which is compounded by an alloy layer on the inner layer and a quartz ceramic layer covering the outer layer; more than one lock screws are arranged in the connecting places of the stop holes in the end parts of the roller and theend parts of the roller shafts; the lock screws radially penetrate through and are in threaded connection with the stop holes in the end parts of the roller; and the hole walls are inserted in the roller shafts. The bottom roller is characterized in that the quartz ceramic layer covers the lock screws in the inner holes; and the lock screws are uniformly distributed in the peripheries in the connecting places of the stop holes in the end parts of the roller and the end parts of the roller shafts. The bottom roller resists high temperature, is excellent in wear resistance, preferably solves the roller surface oxidation and furnace roller nodulation problems, cannot generate the loosening and stripping phenomenon, is reliable in connection of the roller and the roller shafts, and prominently improves the disassembly efficiency of the roller and the roller shafts.
Description
technical field [0001] The invention relates to a hearth roll of an annealing furnace. Background technique [0002] The hearth roller of the annealing furnace includes a roller and a roller shaft connected to both ends of the roller. The roller shaft is inserted into the end of the roller to form a fit and be fixedly connected by welding. In order to resist high temperature and wear, some hearth rollers are double-layer composite cylinders, which are composed of an alloy layer on the inner layer and a quartz ceramic layer covering the outer layer. , The roller and the roller shaft are provided with two positioning pins radially penetrating through the roller and the roller shaft matching parts, one of which partially penetrates the other positioning pin. The main defect of this hearth roller is that if the hearth roller needs to be repaired, the roller and the roller shaft must be disassembled, and the positioning pin shaft needs to be pulled out. Since the positioning pin...
Claims
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Inventor 沈炳辉贲启轩
Owner 江苏亚太特种铸钢厂有限公司