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High temperature alloy wire rod and high wire rolling method thereof

A high-wire rolling and superalloy technology, applied in metal rolling and other directions, can solve the problems of difficult superalloy wire rod, limit the production efficiency and application of GH2132 superalloy, prevent rolling cracking, and solve the problem of limited application. Effect

Active Publication Date: 2021-01-22
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In terms of chemical composition, the GH2132 superalloy is a Fe-25Ni-15Cr-based superalloy, which is comprehensively strengthened by adding molybdenum, titanium, aluminum, vanadium and trace boron. Elements such as V, B, and Al can significantly increase the strength of the alloy, but it also makes it difficult to prepare GH2132 superalloy wire rods by high-wire rolling, especially for GH2132 superalloy wire rods with a coil weight greater than 1.5 tons, which greatly limits the strength of the alloy. Production Efficiency and Application of GH2132 Superalloy

Method used

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  • High temperature alloy wire rod and high wire rolling method thereof
  • High temperature alloy wire rod and high wire rolling method thereof
  • High temperature alloy wire rod and high wire rolling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Billet preparation: Melting GH2132 superalloy billets with a cross-sectional size of 120×120mm, the composition design includes: C: ≤0.08%, Si: ≤1.0%, Mn: 1.0~2.0%, Cr: 13.5 ~16.0%, Ni:24.0~27.0%, Mo:1.0~1.5%, Ti:1.75~2.30%, V:0.1~0.5%, B:0.001~0.010%, Al:≤0.4%, P:≤0.03% , S: ≤0.02%, the balance is iron and unavoidable impurities. The surface of the blank is smoothed to ensure that there are no defects such as scale and surface cracks.

[0057] (2) Heating treatment: the blank is processed in three stages of preheating, heating and soaking, and the temperature in the preheating stage is controlled at 960~970°C, the temperature in the heating stage is 1120~1150°C, and the temperature in the soaking stage is 1200°C ~1210°C, 3% residual oxygen in the furnace, and 2 hours for the billet in the furnace.

[0058] (3) High-speed rolling: 6 passes of rough rolling, 6 passes of intermediate rolling, 4 passes of pre-finish rolling, and 10 passes of finish rolling, and the b...

Embodiment 2

[0064](1) Billet preparation: Melting GH2132 superalloy billets with a cross-sectional size of 140×140mm. The composition design includes: C: ≤0.08%, Si: ≤1.0%, Mn: 1.0~2.0%, Cr: 13.5 ~16.0%, Ni:24.0~27.0%, Mo:1.0~1.5%, Ti:1.75~2.30%, V:0.1~0.5%, B:0.001~0.010%, Al:≤0.4%, P:≤0.03% , S: ≤0.02%, the balance is iron and unavoidable impurities. The surface of the blank is smoothed to ensure that there are no defects such as scale and surface cracks.

[0065] (2) Heat treatment: the billet is processed in three stages of preheating, heating and soaking, and the temperature in the preheating stage is controlled at 970~980°C, the temperature in the heating stage is 1130~1160°C, and the temperature in the soaking stage is 1200°C ~1220°C, 4% residual oxygen in the furnace, and 3 hours for the billet in the furnace.

[0066] (3) High-speed rolling: 8 passes of rough rolling, 6 passes of intermediate rolling, 4 passes of pre-finish rolling, and 8 passes of finish rolling, and the bille...

Embodiment 3

[0072] (1) Billet preparation: Melting GH2132 superalloy billets with a cross-sectional size of 160×160mm, the composition design includes: C: ≤0.08%, Si: ≤1.0%, Mn: 1.0~2.0%, Cr: 13.5 ~16.0%, Ni:24.0~27.0%, Mo:1.0~1.5%, Ti:1.75~2.30%, V:0.1~0.5%, B:0.001~0.010%, Al:≤0.4%, P:≤0.03% , S: ≤0.02%, the balance is iron and unavoidable impurities. The surface of the blank is smoothed to ensure that there are no defects such as scale and surface cracks.

[0073] (2) Heating treatment: the blank is processed in three stages of preheating, heating and soaking, and the temperature in the preheating stage is controlled at 980~1000°C, the temperature in the heating stage is 1140~1170°C, and the temperature in the soaking stage is 1220°C ~1230°C, 5% residual oxygen in the furnace, and 4 hours for the billet in the furnace.

[0074] (3) High-speed rolling: 8 passes of rough rolling, 6 passes of intermediate rolling, 4 passes of pre-finish rolling, and 8 passes of finish rolling, and the b...

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Abstract

The invention discloses a high-temperature alloy wire rod and a high-speed wire rod rolling method thereof. The high-speed wire rod rolling method comprises the following steps that blanks are prepared, and the blanks are designed to be made of GH2132 high-temperature alloy; heat treatment is carried out, the blanks are treated in three stages of preheating, heating and soaking, wherein the temperature of the preheating stage is from 960 DEG C to 1000 DEG C, the temperature of the heating stage is from 1120 DEG C to 1170 DEG C, and the temperature of the soaking stage is from 1200 DEG C to 1230 DEG C; rolling is performed at high speed, rolling is carried out in a plurality of passes, wherein the pressing amount of each pass is less than or equal to 30%, and the maximum rolling speed is 30-60 m / s; and the cooling is controlled, wherein the cooling speed is 20-25 DEG C / s. The high-speed wire rod rolling of the GH2132 high-temperature alloy wire rod with the wire rod weight greater than 1.5t is achieved, a series of defects and safety problems caused by the fact that harmful phases are separated out and the rolling force is too large are avoided, rolling cracking is effectively prevented, the tensile strength of the prepared wire rod is 600-800 MPa, the shrinkage rate of the section is larger than or equal to 50%, the grain size can reach 8.3-9.3 grade, and the problem that the application of the GH2132 high-temperature alloy wire rod is limited due to the wire rod weight and the rolling efficiency is solved.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting, and relates to a high-temperature alloy wire rod and a high-wire rolling method thereof, in particular to a GH2132 high-temperature alloy wire rod and a high-wire rolling method thereof. Background technique [0002] Modern superalloys include iron-based, nickel-based, and cobalt-based superalloys. Among them, GH2132 is an iron-based age-precipitation-hardening superalloy trial-produced in my country. This alloy has no corresponding grades in Soviet or Russian materials. The material used for the trial production of the engine is equivalent to the American A286 superalloy. The material has high yield strength, durability and creep strength below 650 °C, and has good processing plasticity and satisfactory welding performance. It has been widely used in the aviation field in China and is suitable for manufacturing long-term Working high-temperature load-bearing parts of aero-engines...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/16
CPCB21B1/16
Inventor 胡显军范金席承龙顾燕龙鲍丙辉
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE