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A method for manufacturing high-silicon nickel-based alloy cold-rolled sheet

A manufacturing method and technology of nickel-based alloys, applied in the manufacture of high-silicon nickel-based alloy cold-rolled plates, and in the field of plate heat exchangers, can solve problems such as high gas content, billet cracking, and low melting point, and achieve good room temperature performance and surface Good, high-performance results

Active Publication Date: 2021-12-07
FUSHUN SPECIAL STEEL SHARES
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Problems solved by technology

The purpose is to solve the problem of cracking inside or on the surface of the billet during thermal processing caused by segregation of steel ingots, high gas content, and low melting point, so as to obtain high-silicon-nickel-based alloys with good surface, uniform structure, and qualified tensile properties at room temperature. Specification cold rolled sheet

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  • A method for manufacturing high-silicon nickel-based alloy cold-rolled sheet
  • A method for manufacturing high-silicon nickel-based alloy cold-rolled sheet

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Embodiment Construction

[0036] The present invention is described in detail below with examples, and examples are only a description of the best implementation mode of the present invention, and do not limit the scope of the present invention in any way.

[0037] The present invention is described in more detail by using three examples.

[0038] 1. See Table 1 for the mass percentages of the chemical components of the three examples.

[0039] Table 1 chemical composition

[0040]

[0041] 2. the production technology of embodiment is as follows:

[0042] ⑴Smelting: using VIM+ESR smelting

[0043] During the production of VIM, the main process parameters of the three cases are shown in Table 2.

[0044] Table 2 main process parameter list

[0045] batch Not greater than 5Pa, holding time (min) Vacuum degree during pouring (Pa) Pouring temperature (℃) example 1 45 36 1418 Example 2 49 25 1414 Example 3 57 28 1408

[0046] During ESR production, the cur...

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Abstract

The invention discloses a method for manufacturing a high-silicon nickel-based alloy cold-rolled plate. Through the use of innovative technology: optimize the composition design, reasonably control the content of main elements in the alloy, and reduce the content of residual elements such as sulfur and phosphorus; control the holding time of the vacuum induction furnace under high vacuum, pouring and pouring temperature under low vacuum, control the electric current Slag furnace process parameters and electroslag selection of appropriate slag system; control of forging + rolling mill three-step blanking process, heating temperature and deformation; control of cold-rolled product deformation and solid solution process, successfully solve the problem of alloy segregation and high gas content Cracking inside or on the surface of the billet during thermal processing caused by low melting point and other reasons. Beneficial effects of the present invention: good surface, regular plate shape, uniform structure: grain size 7-5, excellent tensile properties at room temperature: tensile strength (Rm, MPa) about 800, yield strength (Rp 0.2 , MPa) 350, high-silicon-nickel-based alloy large-scale cold-rolled plate with elongation after fracture (A, %) 65.

Description

technical field [0001] The invention belongs to the field of corrosion-resistant and heat-resistant alloy manufacturing, and mainly relates to a method for manufacturing a high-silicon-nickel-based alloy cold-rolled plate, which is used for a plate heat exchanger. Background technique [0002] Due to the advantages of high heat transfer efficiency, light weight, compact structure, small footprint and easy repair and maintenance, plate heat exchangers have developed rapidly. It plays an increasingly important role in heat recovery and comprehensive utilization in HVAC, metallurgy, nuclear power, petroleum, chemical and other industries. Restricted in terms of temperature and working pressure. The high-silicon nickel-based alloy is a mixture of Ni-Cr and Ni-Si double bases, so it has high oxidation resistance to oxidation and super-oxidation media. Compared with stainless steel with the same silicon content, the high-silicon nickel-based alloy has a Sulfuric acid (reagent gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22C1/02C22B9/18C22F1/10C21D8/02C21D1/26C21D9/00
CPCC21D1/26C21D8/0221C21D8/0226C21D8/0236C21D8/0247C21D9/0081C22B9/18C22C1/023C22C19/056C22F1/10Y02P10/25
Inventor 李飞扬张鹏王志刚李宁王树财秋立鹏孙大利于杰侯智鹏王洋洋谷强韩魁王艾竹
Owner FUSHUN SPECIAL STEEL SHARES
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