Additive for increasing martensite temperature of Mn-Cu damping alloy and use method of additive

A damping alloy and additive technology, applied in the field of Mn-Cu damping alloy additives, can solve problems such as poor thermal processing performance, casting defects, and easy cracking, and achieve low production costs, no heat treatment process, and simple processing methods.

Inactive Publication Date: 2017-05-31
佛山新瑞科创金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, alloys with higher Mn content have obvious disadvantages, such as wide solidification temperature range during solidification, which can easily lead to casting defects, poor hot workability and easy cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An additive used to increase the martensitic temperature of Mn-Cu alloy, the composition of the additive is: Zn: 5%, Eu: 1.2%, Al: 1.8%, Hf: 0.2%, Ce: 2.1 %, Cr: 1.2%, Sn: 4.6%, and the balance is Fe. When smelting common Mn-Cu alloys with a Mn content of 40-60wt%, such as Incramute alloys (58%Cu-40%Mn-2%Al), take the alloy at 1225°C in argon-protected vacuum induction melting furnace Melt in the medium spinel crucible and keep it warm for 10 minutes, then add 2.4% of the additive by weight of the alloy, stir well and keep it warm for 10 minutes. Iron mold or sand mold casting is then performed. After casting, cool to room temperature, demould, and clean the casting surface. The casting is homogenized at 900°C for 12 hours, and then cooled in the furnace to obtain an alloy with high damping performance. After the alloy is cooled with the furnace, the martensite temperature is about 68 ℃. The tensile strength of the obtained product is 560MPa, the modulus of elastici...

Embodiment 2

[0017] An additive used to increase the martensite temperature of Mn-Cu alloy, the composition of the additive is: Zn: 6%, Eu: 1.8%, Al: 2.5%, Hf: 0.3%, Ce: 2.6 %, Cr: 1.4%, Sn: 6.8%, and the balance is Fe. When smelting common Mn-Cu alloys with Mn content of 40-60wt%, such as Sonoston alloy (54.25Mn-37%Cu-4.25%Al-3%Fe-1.5%Ni), take the alloy at 1235°C under argon The spinel crucible was melted in the gas-shielded vacuum induction melting furnace and kept warm for 10 minutes, and then 3.2% of the alloy weight percentage was added to the additive, stirred thoroughly and kept warm for 10 minutes. Iron mold or sand mold casting is then performed. After casting, cool to room temperature, demould, and clean the casting surface. The casting is homogenized at 900°C for 12 hours, and then cooled in the furnace to obtain an alloy with high damping performance. After the alloy is cooled with the furnace, the martensite temperature is about 74 °C. The resulting product has a tensile ...

Embodiment 3

[0019] An additive for increasing the martensitic temperature of Mn-Cu alloy, the composition of the additive is: Zn: 5.3%, Eu: 1.5%, Al: 2.1%, Hf: 0.3%, Ce: 2.6 %, Cr: 1.4%, Sn: 4.8%, and the balance is Fe. When smelting common Mn-Cu alloys with a Mn content of 40-60wt%, such as Incramute alloys (58%Cu-40%Mn-2%Al), take the alloy at 1245°C in argon-protected vacuum induction melting furnace Melt in the medium spinel crucible and keep it warm for 10 minutes, then add additives accounting for 3.6wt% of the alloy composition, stir well and keep it warm for 10 minutes. Iron mold or sand mold casting is then performed. After casting, cool to room temperature, demould, and clean the casting surface. The casting is homogenized at 900°C for 12 hours, and then cooled in the furnace to obtain an alloy with high damping performance. After the alloy is cooled with the furnace, the martensite temperature is about 82 °C. The resulting product has a tensile strength of 573MPa, an elasti...

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Abstract

The invention discloses an additive for increasing the martensite temperature of a Mn-Cu damping alloy and a use method of the additive. The additive is prepared from following components in part by weight: 4-8% of Zn, 1-2% of Eu, 1-3% of Al, 0.2-0.4% of Hf, 2-3% of Ce, 1-2% of Cr, 4-8% of Sn and the balance Fe. On the basis of guaranteeing the damping performance and the mechanical performance of the existing Mn-Cu-based damping alloy for deformation and with the manganese content of 40-60%, the martensite temperature of the alloy is increased to about 60-90 DEG C. Thus, the high damping performance of the alloy can be obtained through furnace cooling after homogenizing treatment for 12 hours at the temperature of 900 DEG C after casting is completed, and no annealing treatment for 4 hours at the temperature of about 425 DEG C is needed.

Description

technical field [0001] The invention relates to Mn-Cu damping alloy technology, in particular to a Mn-Cu damping alloy additive. Background technique [0002] The development of modern industry is changing with each passing day, and the quantity and types of various types of machinery are developing towards high power and high speed. However, the problems of vibration and noise generated during the operation of machinery are becoming more and more prominent, and have aroused extensive attention in related fields. Vibration and noise can not only reduce the service life of equipment, but also cause noise pollution to the ecological environment, which seriously damages people's physical and mental health. In the fields of transportation, energy, communication and electric power, controlling vibration and reducing noise has become an urgent engineering problem to be solved. The control of mechanical noise is not only an urgent task in labor protection and environmental protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/06C22C38/18C22C22/00C22C9/05C22C1/03C22C1/06
CPCC22C38/002C22C1/03C22C1/06C22C9/05C22C22/00C22C38/005C22C38/008C22C38/06C22C38/18
Inventor 刘亚军曹帅郭强
Owner 佛山新瑞科创金属材料有限公司
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