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High-damping Mn-Cu damping alloy and manufacturing method thereof

A vibration-damping alloy and high-damping technology, applied in the field of high-damping manganese-copper vibration-damping alloys and their manufacturing, can solve problems such as limited effect and reduced damping performance, and achieve high operating temperature, reducing vibration transmission, and wide operating temperature range. Effect

Active Publication Date: 2015-07-08
BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the domestic and foreign literatures, there is also a direct addition of Al elements in high manganese alloys to increase the Ms to increase the upper temperature limit with damping properties, but the effect is limited, and improper addition will lead to a decrease in damping properties.

Method used

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  • High-damping Mn-Cu damping alloy and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The composition is Mn71.17%, Ni2.23%, Al2.68%, Fe2.27%, C0.005%, Si0.08%, P0.017%, S0.0043%, N0.030%, O0.006 %, the rest is Cu alloy, which is smelted in an electric furnace. The refining temperature of the alloy is 1220°C, the refining time is 25min, and the tapping temperature is 1210°C. After the ingot is demoulded and cooled to room temperature, it is heated to 850°C in a protective atmosphere or vacuum , heat preservation for 9 hours to make it homogeneous, and then the ingot is heated at 840°C, and forged into a 85mm×85mm profile with a forging press, and the final forging temperature is 750°C. Material heat treatment system: Heating to 800°C in a hydrogen atmosphere, holding for 1 hour, cooling to 400°C at a rate of 5°C / min, holding for 4 hours, cooling to room temperature at a rate of 3°C / min.

Embodiment 2

[0023] The composition is Mn70.03%, Ni3.88%, Al1.52%, Fe1.99%, C0.006%, Si0.05%, P0.015%, S0.0053%, N0.034%, O0.009 %, Zr0.20%, Ti0.25%, Mm0.15%, and the rest is an alloy of Cu. It is smelted in an electric furnace. The refining temperature of the alloy is 1220°C, the refining time is 25min, and the tapping temperature is 1220°C. After the ingot is demolded and cooled to room temperature, it is heated to 850°C in a protective atmosphere or under vacuum, and kept for 10 hours to make it homogeneous, and then the ingot is heated at 855°C, forged into a 90mm×90mm billet with a forging press, and the surface is ground. After that, it is hot forged at 860°C to form a φ50mm profile, and the final forging temperature is 700°C. Material heat treatment system: Heating to 900°C in a hydrogen atmosphere, holding for 1 hour, cooling to 450°C at a rate of 2°C / min, holding for 2 hours, cooling to room temperature at a rate of 3.5°C / min, and leaving the furnace.

Embodiment 3

[0025] The composition is Mn73.25%, Ni2.36%, Al3.00%, Fe1.88%, C0.008%, Si0.05%, P0.018%, S0.0045%, N0.041%, O0.005 %, La0.15%, Ce0.10%, and the rest is Cu alloy, which is smelted in an electric furnace. The refining temperature of the alloy is 1225°C, the refining time is 20min, and the tapping temperature is 1200°C. After the ingot is demolded and cooled to room temperature, it is heated to 900°C in a protective atmosphere or under vacuum, and held for 8 hours to make it homogeneous, and then the ingot is heated at 865°C, forged into a 90mm×90mm square billet with a forging press, and the surface is ground. After that, it is heated and forged at 850°C to form a φ20mm profile, and the final forging temperature is 730°C. Material heat treatment system: Heating to 800°C in a hydrogen atmosphere, holding for 1 hour, cooling to 500°C at a rate of 0.5°C / min, holding for 2 hours, cooling to room temperature at a rate of 1°C / min, and leaving the furnace.

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Abstract

The invention provides a high-damping Mn-Cu damping alloy and a manufacturing method thereof. The alloy comprises chemical components of: 60.00-75.00 wt% of 2.00-5.00 wt% of Ni, 0.50-3.00 wt% of Al, 1.50-2.50 wt% of Fe, no more than 0.01 wt% of C, no more than 0.10 wt% of Si, less than 0.020 wt% of P, less than 0.020 wt% of S, no more than 0.050 wt% of N, no more than 0.010 wt% of O, one or more selected from Zr, Ti, La, Ce, Y and mixed rare earth (Mm), and the balance of Cu and inevitable impurities. After heat treatment, the alloy has damping performances as follows: Q<-1><max> of 0.035-0.055, Q<20 DEG C> <-1> of 0.020-0.040, and Q<110 DEG C> <-1> of 0.010-0.030. The alloy has high damping capacity, good temperature stability, wide temperature range, high strength and good processability, can be processed into sectional material and strips, is applicable to the parts requiring vibration and noise reduction in the fields of aviation and space flight, navigation, nuclear industry, automobile manufacturing, electrical equipment and precision instruments and instrumentation, and can play the roles of reducing the vibration transmission, reducing noise and prolonging the service life of structural components.

Description

technical field [0001] The invention relates to a high-damping manganese-copper vibration-damping alloy and a manufacturing method thereof. Background technique [0002] With the rapid development of modern industry, people pay more and more attention to the hazards of vibration and noise generated by various mechanical equipment, electromechanical products, instruments and meters. Applying vibration-damping alloys directly to the source of mechanical vibration and noise is an effective method for reducing vibration and noise. Among all kinds of damping alloys, twin-type manganin-copper damping alloys have attracted much attention due to their high damping, high strength, good toughness and processability. So far, the manganese copper vibration damping alloys that have been commercially applied mainly include Sonoston alloy in the United Kingdom, Abpopa alloy in the former Soviet Union, Incramute alloy in the United States, 2310 alloy in China and M2052 alloy in Japan, etc....

Claims

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Application Information

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IPC IPC(8): C22C22/00C22F1/16
Inventor 谢东辉蔡凯洪于敏
Owner BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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