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Flux-cored wire

A technology of flux-cored welding wire and content, which is applied in the field of materials science and engineering, can solve the problems of short service life of furnace rolls, large production consumption, energy waste, etc., and achieves the effects of convenient processing, improved work efficiency, and reduced production costs.

Inactive Publication Date: 2011-07-20
杨曜宇
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Problems solved by technology

[0003] The furnace rollers currently used in industrial heating furnaces are basically produced by casting methods. Due to the limitations of casting materials and processes, the service life of furnace rollers is very short. Once they fail, they have to be scrapped. The production consumption of enterprises is very huge. Energy is also a huge waste

Method used

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Embodiment Construction

[0020] The flux-cored welding wire of the present invention is mainly composed of a hollow electrode and a flux core. During specific implementation, the hollow electrode is first produced, and its production process is: steel plate→steel strip→rolling→drawing into a hollow electrode of φ3.2-φ5 welding rod. Then, the flux core is compounded, and the performance change of the flux cored wire is completed through the selection and deployment of alloy elements in the flux core, and the control of the content of key elements. Select ferrosilicon 1.6-2.8%, medium carbon ferromanganese 1.1- 2.6%, metal chromium 20-30%, metal nickel 14-55%, metal molybdenum 1-3%, metal tungsten 0.5-2%, metal aluminum 0.1-2%, metal niobium 0.1-1%, metal titanium 0.3-0.5% %alloying element powder blending→drying→mixing and stirring, then put into a hollow welding rod, seal and make a finished product.

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Abstract

The invention relates to a flux-cored wire, which is characterized by being prepared by the following steps of: selecting alloy elements of 1.6 to 2.8 percent of silicon iron, 1.1 to 2.6 percent of medium carbon ferromanganese, 20 to 30 percent of chromium metal, 14 to 55 percent of nickel metal, 1 to 3 percent of molybdenum metal, 0.5 to 2 percent of tungsten metal, 0.1 to 2 percent of aluminum metal, 0.1 to 1 percent of niobium metal and 0.3 to 0.5 percent of titanium metal, preparing into powder, drying, mixing and stirring, filling in a hollow welding rod, and sealing to obtain a finished product. By selecting and blending the alloy elements in the flux core and controlling the content of key element components, the performance change of the flux-cored wire is completed so as to meet the process requirement of surfacing and improve the product serviceability.

Description

Technical field: [0001] The invention belongs to the application field of material science engineering, and mainly relates to a welding material for submerged arc surfacing welding used in manufacturing and repairing industrial heating furnace rollers-a special tubular flux-cored welding wire. Background technique: [0002] Industrial heating furnace is an important equipment in the production of iron and steel industry. The furnace roller working in the furnace is subjected to a high temperature of up to 1100 ℃, and at the same time bears the weight of the metal in a high temperature state and the continuous movement over and over again. Therefore, the requirements for the furnace roller itself It has good high temperature oxidation resistance, high temperature creep resistance and anti-wear performance. [0003] The furnace rollers currently used in industrial heating furnaces are basically produced by casting methods. Due to the limitations of casting materials and proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
Inventor 林祥生杨曜宇孙春生刘志高
Owner 杨曜宇
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