A kind of production method of iron-chromium-aluminum alloy wire rod
An iron-chromium-aluminum alloy and a production method, which are applied in the field of drawing and production of powder metallurgy iron-chromium-aluminum alloy wires, can solve problems such as easy brittle fracture, and achieve the effects of enhancing plastic deformation ability, reducing adverse effects and improving yield
Active Publication Date: 2021-06-08
BEIJING SHOUGANG GITANE NEW MATERIALS
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Problems solved by technology
[0003] The invention provides a production method of iron-chromium-aluminum alloy wire rod to solve or partly solve the technical problem that the existing iron-chromium-aluminum hot-rolled wire rod is easy to be brittle during drawing
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[0028] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0029] The production method of powder metallurgy iron-chromium-aluminum (FeCrAl) electric heating alloy wire rod is a brand-new manufacturing method developed by the applicant based on the shortcomings of the smelting method. The production process of powder metallurgy iron-chromium-aluminum wire mainly includes: using the FeCrAl master alloy obtained by smelting to make powder, and then using hot isostatic pressing to form and sinter the alloy powder to obtain FeCrAl alloy billet, and then hot rolling the FeCrAl alloy billet to obtain FeCrAl Alloy wire rod, and finally FeCrAl alloy wire rod is drawn to make FeCrAl alloy wire or wire. However, the applicant found in practical applicatio...
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The invention discloses a production method of iron-chromium-aluminum alloy wire, which is characterized in that the method comprises: hot-rolling and pickling the iron-chromium-aluminum alloy obtained by powder metallurgy process forming and sintering to obtain the iron-chromium alloy after pickling Aluminum alloy wire rod; performing aging treatment at room temperature and heating aging treatment sequentially on the iron-chromium-aluminum alloy wire rod after pickling to obtain the aged iron-chromium-aluminum alloy wire rod; The alloy wire rod is drawn to obtain the finished product of the iron-chromium-aluminum alloy wire rod. Through the above-mentioned aging treatment, the hydrogen originally enriched in the microstructure of the FeCrAl alloy wire rod can be diffused to the surface of the alloy and discharged, so as to significantly reduce the adverse effects of drawing fracture caused by hydrogen, and enhance the plastic deformation of the FeCrAl alloy wire rod The ability to improve the yield in the drawing process.
Description
technical field [0001] The present application relates to the technical field of production and manufacture of iron-chromium-aluminum alloys, in particular to a drawing production method of powder metallurgy iron-chromium-aluminum alloy wire rods. Background technique [0002] Iron-chromium-aluminum (FeCrAl) electric heating alloy has high resistivity, light specific gravity, strong oxidation resistance and carburization resistance, good corrosion resistance to sulfur and various hydrocarbon gases, and low price. The service temperature can reach 1100-1400 ° C. Widely used in electric heating components, precision instruments, chemical containers and other industries. At present, iron-chromium-aluminum alloy wire rods have been smelted, cast, rolled, and wire-drawn. The main disadvantages of the iron-chromium-aluminum alloy wire produced by the melting method are low high-temperature strength and easy creep deformation; and its high-temperature plasticity , Poor toughness a...
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IPC IPC(8): B21C1/02B21C9/00C21D8/06
CPCB21C1/02B21C9/00C21D8/065
Inventor 张德汉郑晓丹王海军王刚
Owner BEIJING SHOUGANG GITANE NEW MATERIALS