Heating furnace superalloy spacer

A high-temperature alloy and heating furnace technology, applied in the field of iron and steel metallurgy, can solve problems such as increasing production costs, damage to steel billets, affecting product quality, etc., and achieve the effects of extending service life, prolonging service life, and reducing implementation difficulty.

Active Publication Date: 2022-03-22
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the pad is burned out, on the one hand, it will cause damage to the heated billet, affecting the quality of the final product, and on the other hand, it will increase the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1 The manufacture of the alloy block of the present invention

[0017] 1. The formula of Co20 alloy block for the low-temperature section of the heating furnace (≤1000°C), in terms of mass percentage:

[0018] Table 1

[0019] chemical composition content / % co 18-25 Cr 14-23 Ni 15-24 Al 2-5 Fe margin

[0020] 2. Formula of Co50 alloy block for high temperature section of heating furnace (>1000℃), in terms of mass percentage:

[0021] Table 2

[0022] chemical composition content / % co 48-55 Cr 25-35 Ni 15-25 AL 2-5 Fe margin

[0023] The smelting end point temperature is 100-300°C higher than the maximum melting point of the added alloy, and the smelting end point temperature is ≥1650°C; under the premise of smelting the bottom material, the order of adding each alloy element is Ni, Cr, Co;

[0024] The timing of adding Al is 3-5 minutes before the molten alloy is pour...

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PUM

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Abstract

The invention relates to a heating furnace superalloy cushion block, which belongs to the technical field of iron and steel metallurgy. The invention provides a heating furnace superalloy cushion block, the chemical composition of which is: Co 16-55%, Cr 10-35%, Ni 10-30%, Al 2-5%, and the balance is Fe; The heating furnace superalloy block is prepared sequentially by smelting and pouring, wherein the order of adding the alloy elements during smelting is Ni, Cr, Co, and Al is added 3-5 minutes before the molten alloy is released from the furnace and poured. The present invention focuses on the existing technology and equipment, does not need to carry out major transformation on the technology and equipment, and has the advantages of low implementation difficulty and low cost; it can extend the service life of the block to 3-5 years, significantly reducing the Cost of production. In addition, the manufacturing process of the alloy cushion block of the present invention has universal applicability, and has the prospect of popularization and application in various steel rolling heating furnaces.

Description

technical field [0001] The invention relates to a heating furnace superalloy cushion block, which belongs to the technical field of iron and steel metallurgy. Background technique [0002] As an important part of the production and operation of the heating furnace, the superalloy block of the heating furnace is mainly used to carry the billet, protect the water pipe, and reduce the temperature difference of the black mark of the billet to a certain extent, which is very important for the design and operation of the entire heating furnace. At the beginning of the design of the high-temperature alloy spacer, it was considered to reduce the black mark on the lower surface of the produced billet, improve the stability of the rolling process and the overall performance of the final product, but in actual engineering application, its role has changed from reducing the black mark to affecting The quality of the final product is gradually highlighted. In the production of steel pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/52C22C38/06C22C30/00C22C19/07F27D5/00
CPCC22C38/52C22C38/06C22C30/00C22C19/07F27D5/00
Inventor 肖利任艳丽
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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