Process method for preparing hot-rolled functional plate and roller through micro-beam plasma deposition

Abstract

The invention discloses a process method for preparing various functional plates and rollers in contact with steel in a steel hot rolling (plate, shape and pipe) production line through micro-beam plasma deposition, and relates to the technical field of composite manufacturing. The method comprises the following steps that firstly, a cladding material is prepared and comprises, by mass, 3%-7% of Ni, 2%-4% of Cr, 2%-4% of Mo, 30%-50% of Ti, 3%-8% of W, 20%-35% of Co and the balance Fe; the cladding material is spherical powder, and the particle size of the cladding material is 200-350 meshes; secondly, high-quality carbon structural steel is used for manufacturing base materials of functional plates and rollers; the high-temperature-resistant and wear-resistant alloy materials are cladded at the contact positions of the functional plate, the roller and the steel in a partitioned manner, so that the high-temperature-resistant and wear-resistant properties of the functional plate and the roller are greatly improved, the service life is prolonged, the conditions of nodulation, steel adhesion and poor wear resistance of the functional plate and the roller are avoided, and the service life of the functional plate and the roller is prolonged. The service life of the functional plate and the roller manufactured through micro-beam plasma cladding partition composite manufacturing can be prolonged by more than 10 times compared with existing simple substance materials, the service life of the functional plate and the roller manufactured through other composite modes is greatly prolonged, and base materials of the functional plate and the roller can be repeatedly used.

Description

technical field [0001] The invention belongs to the technical field of composite manufacturing, and in particular relates to a process method for preparing functional plates and rolls of a hot rolling production line by microbeam plasma welding. Background technique [0002] Hot rolling means that the material needs to be heated during or before rolling, generally to a temperature above the recrystallization temperature, such as above 1000 degrees. With the continuous upgrading of technology, the market has higher and higher requirements for the accuracy of hot-rolled products, and higher and higher requirements for the quality and performance of spare parts for various processes and working conditions of the production line. [0003] Hot-rolled functional plates and rolls are one of the core functional components of a hot-rolled production line that affect product quality and rolling line operating efficiency, and play a very important role in the quality of hot-rolled prod...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of microbeam plasma cladding to prepare the technological method of hot-rolled function plate, roll, to solve existing problem: prior art mainly contains following several different technological methods: (1) single homogeneous , means that the product body is the same component, the disadvantage is that the content of wear-resistant and heat-resistant elements is low, and the product performance is poor; the heat-resistant and wear-resistant elements are high, the manufacturing process is difficult, and the cost is high; The disadvantages are that the heat input of the surfacing process is large, the dilution rate of the material is high, the deformation of the workpiece is large, the amount of subsequent processing is large, the functional materials cannot achieve the desired effect, and the service life cannot meet expectations. (3) Laser cladding composite refers to laser cladding a wear-resistant alloy layer with a thickness of about 1mm on the surface of the functional plate and roller. The disadvantage is that the cost is high, the thickness design of the functional layer is limited, and the applicability to the production line Limited, for example, for laser cladding functional boards and rollers, most of the cladding materials are Ni-based powders. For stainless steel production lines, functional boards and rollers will have nodules and stick steel

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