A kind of preparation method of heat-resistant alloy steel material and pipe

Abstract

The invention relates to the field of metallurgy processing, and discloses a preparation method of a heat-resistant alloy steel material and a pipe. The chemical components of the heat-resistant alloysteel comprises the following components of, 0.05% to 0.12% of C, 2.0% to 3.5% of Si, 1.0% to 2.0% of Mn, 0% to 0.035% of P, 0% to 0.04% of S, 21% to 28% of Cr, 1.5% to 2.5% of Mo, 19% to 23% of Ni,0% to 0.5% of Cu, 2.5% to 4.0% of W, 0.1% to 0.3% of N, 0.08% to 0.15% of Ti, 10XC to 1.1% of niobium, and the balance of iron. The prepared high-temperature alloy steel is relatively low in carbon content, good toughness and forging performance are achieved, the processing performance equivalent to that of common steel is solved, oxidation resistance in a high-temperature environment, high-temperature wear resistance and the like, and is suitable for extruding high-temperature-resistant alloy profiles such as pipes, so that the machining mode of the high-temperature-resistant material part issimple and easy to popularize.

Description

technical field [0001] The invention relates to the field of metallurgical processing, in particular to a method for preparing a heat-resistant alloy steel material and a pipe. Background technique [0002] In the composition of steel, in addition to iron and carbon, other alloying elements are added, which is called alloy steel, which belongs to the iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements on the basis of ordinary carbon steel. According to the different elements added and appropriate processing technology, special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, and non-magnetic properties can be obtained. [0003] General alloy metal materials can only work for a long time at 500-600 degrees Celsius. Metals that can work at high temperatures higher than 700 degrees Celsius are generally called heat-resistant alloys. For alloys ...

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Problems solved by technology

[0004] Usually, in order to solve the high-temperature environment of high-temperature parts, especially the application of automobile engines or automobile turbochargers, the high-temperature alloy grades disclosed in the standard are selected, and the steel grades have high carbon content and the influence of alloying elements. Difficult to process, basically use the casting process to complete the blanks required for the parts, after mold making, burning, smelting, etc., and then perform precision machining, the process is complicated, the process route is long, the production efficiency is low, and the energy consumption is high. Therefore, the development A preparation method for processing heat-resistant alloy steel materials and pipes by ordinary machining is very important, and it has a more commonly used marketing method