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A kind of forging method of Cu-containing nickel-based alloy and Cu-containing nickel-based alloy

A technology of nickel-based alloy and forging ratio, which is applied in the field of forging technology to achieve fine and uniform microstructure, improve the structure and improve the performance of the alloy

Active Publication Date: 2016-10-05
ENN ENVIROTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a forging method of a Cu-containing nickel-based alloy, which overcomes defects such as forging cracks caused by the poor hot working performance caused by the addition of copper, can effectively improve the yield rate, and can also improve the quality of the alloy. Corrosion resistance

Method used

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  • A kind of forging method of Cu-containing nickel-based alloy and Cu-containing nickel-based alloy
  • A kind of forging method of Cu-containing nickel-based alloy and Cu-containing nickel-based alloy
  • A kind of forging method of Cu-containing nickel-based alloy and Cu-containing nickel-based alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Melting in a 25kg vacuum induction furnace Cu-containing nickel-based alloy ingot, the composition of the ingot is Cu-Ni-Cr-Fe, and the height of the riser is 103mm. The ingot is forged on a 0.7T free forging hammer. The specific operation steps are as follows:

[0064] Pretreatment: Grinding the surface of the ingot to remove defects such as subcutaneous air bubbles, spatters and scale on the surface.

[0065] Open billet forging: heat the pretreated ingot to 1120±10°C with the furnace and keep it warm for 2.5 hours, then take it out of the furnace for forging, the initial forging temperature is 1061°C, the final forging temperature is 908°C, and the cross-sectional size of 112mm×105mm square billet, the forging ratio is 1.25;

[0066] Preliminary forming: return the above forged billet with a cross-sectional size of 112mm×105mm to the furnace, heat it to 1080±10°C and keep it warm for 1 hour, then take it out of the furnace for forging, the initial forging temperatu...

Embodiment 2

[0070] Melting in a 25kg vacuum induction furnace Cu-containing nickel-based alloy ingot, the composition of the ingot is Cu-Ni-Cr-Fe, and the height of the riser is 97mm. The ingot is forged on a 0.7T free forging hammer. The specific operation steps are as follows:

[0071] Pretreatment: Grinding the surface of the ingot to remove defects such as subcutaneous air bubbles, spatters and scale on the surface.

[0072] Open billet forging: heat the pretreated ingot to 1120±10°C with the furnace and keep it warm for 2.5 hours, then take it out of the furnace for forging, the initial forging temperature is 1058°C, the final forging temperature is 913°C, and the cross-sectional size of 113mm×108mm square billet, the forging ratio is 1.30;

[0073] Preliminary forming: Return the above forged billet with a cross-sectional size of 113mm×108mm to the furnace, heat it to 1080±10°C and keep it warm for 1 hour, and then take it out of the furnace for forging. A flat ingot with a size ...

Embodiment 3

[0077] Melting in a 25kg vacuum induction furnace Cu-containing nickel-based alloy ingot, the composition of the ingot is Cu-Ni-Cr-Fe, and the height of the riser is 98mm. The ingot is forged on a 0.7T free forging hammer. The specific operation steps are as follows:

[0078] Pretreatment: Grinding the surface of the ingot to remove defects such as subcutaneous air bubbles, spatters and scale on the surface.

[0079] Open billet forging: heat the pretreated ingot to 1120±10°C with the furnace and keep it warm for 2.5 hours, then come out of the furnace for forging, the initial forging temperature is 1062°C, the final forging temperature is 911°C, and the cross-sectional size of 115mm×104mm square billet, the forging ratio is 1.19;

[0080] Preliminary forming: Return the above forged billet with a section size of 115mm×104mm to the furnace, heat it to 1080±10°C and keep it warm for 1 hour, then take it out of the furnace for forging, the initial forging temperature is 1030°C...

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Abstract

The invention provides a forging method of nickel base alloy containing copper and the nickel base alloy containing copper and belongs to the technical field of forging technologies. The forging method overcomes the defects that because copper is added to the nickel base alloy, the hot working character is poor, and forge cracking is caused, and the yield can be effectively improved. The forging method comprises the steps of conducting billet forging, wherein preprocessed nickel base alloy ingots containing copper are placed in a heating furnace, the nickel base alloy ingots containing copper are heated to the temperature T1, the temperature T1 is kept, forging is conducted according to the forging ratio y1, so that forging stocks are obtained, the temperature T1 is 1120+ / -10 DEG C, and y1 is smaller than or equal to 1.4; conducting initial forming, wherein the forging stocks are arranged in the heating furnace to be heated, the temperature is kept, and forged pieces which are initially formed are obtained through forging; conducting final forging, wherein the initially formed forged pieces are arranged in the heating furnace to be heated to the temperature T3, the temperature T3 is kept, forging is conducted according to the forging ratio y3, so that finished forged pieces are obtained, the temperature T3 is higher than 1000 DEG C and lower than 1080+ / -10 DEG C, and y3 is larger than 1.5 and smaller than 2. The forging method can be used for forging of the nickel base alloy containing copper.

Description

technical field [0001] The invention relates to the technical field of forging technology, in particular to a forging method of a Cu-containing nickel-based alloy. Background technique [0002] In corrosion-resistant nominal equipment, such as petrochemical, flue gas desulfurization, sewage treatment, coal chemical, oil and gas mining and other industrial pipelines and reaction vessels, the more commonly used corrosion-resistant alloys are nickel-based alloys, and their main performance characteristics are that they can Resists corrosion from media and mixed solutions. [0003] At present, nickel-based alloys are usually formed by free forging, that is, heating and then free forging. The existing forging process is generally as follows: the nickel-based alloy ingot is heated to 1150±10°C with the furnace, and then the billet is opened with a heavy hammer, and then sequentially Repeatedly heating to 1120±10°C, and then out of the furnace for forging until the required size i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21J1/06C22F1/10
Inventor 刘扬程乐明宋成才史金涛朱邦阳
Owner ENN ENVIROTECH CO LTD
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