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A preparation of cumn by vacuum induction melting 25 ni 10 alloy material method

A technology of vacuum induction melting and alloy materials, which is applied in the field of CuMn25Ni10 alloy materials, can solve the problems of patch resistance resistivity, unqualified temperature coefficient of resistance, large measurement errors and human errors, and high impurity content of alloy materials, so as to achieve convenient record analysis , Reduce element burning loss, less porosity effect

Active Publication Date: 2021-04-16
陕西斯瑞扶风先进铜合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the high-end manganese-copper alloys in the domestic market are obtained through imports. Most of the domestic production uses non-vacuum smelting processes. The alloy materials produced have high impurity content and uneven composition. The resistivity and temperature coefficient of resistance of the chip resistors made unqualified
[0004] Moreover, most of the current domestic vacuum induction melting equipment casting process measurements use the crucible turning angle measurement method, timing method and empirical method, and the measurement error and human error are large.
And there is a hidden danger of inductor discharge during the working process of the smelting furnace

Method used

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  • A preparation of cumn by vacuum induction melting <sub>25</sub> ni <sub>10</sub> alloy material method
  • A preparation of cumn by vacuum induction melting <sub>25</sub> ni <sub>10</sub> alloy material method

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Effect test

Embodiment 1

[0034] CuMn 25 Ni 10 The preparation method of alloy material comprises the following steps:

[0035] (1) Preparation of CuNi 20 Master Alloy:

[0036] 1) Batching: take copper plate and nickel plate as raw materials with a weight percentage of 80%:20% for later use.

[0037] 2) Furnace vacuuming: Add copper and nickel plates into the clay crucible of the vacuum induction melting furnace by electrolysis, close the furnace cover, close the vent valve, and clean the observation window; open the mechanical pump and open the low vacuum baffle valve Vacuumize and turn on the Roots pump when the vacuum pressure in the furnace is ≤0.08MP.

[0038] 3) Melting: When the vacuum pressure in the furnace is less than or equal to 5Pa, the heating power is increased to 20KW and kept for 5 minutes; then the power is increased to 40KW and kept for 5 minutes; then the power is increased to 55KW and kept for 5 minutes; then the power is increased to 60KW and kept for 5 minutes; 5min; finall...

Embodiment 2

[0061] In order to solve the existing vacuum induction furnace's inability to accurately measure the real-time weight of castings and the discharge problem during the work of the vacuum induction furnace, the present invention designs a new furnace structure, the specific structure of which is as follows:

[0062] A down-casting vacuum induction furnace capable of accurately measuring casting weight, comprising a furnace body 1, the shape of the furnace body 1 is a hollow cylinder, a crucible 2 is arranged on the upper part of the inner cavity of the furnace body 1, and a furnace body 1 is arranged on the outer wall The inductor 3 corresponding to the position of the crucible 2 is provided with a copper mold 7 corresponding to the position of the crucible 2 under the inner cavity of the furnace body 1, and a copper mold 7 corresponding to the position of the copper mold 7 is arranged on the outer wall of the furnace body 1. Flat air extraction port 6; the copper mold 7 is place...

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Abstract

The invention relates to the technical field of copper-based alloys, in particular to a method for preparing CuMn by vacuum induction melting 25 Ni 10 Method for Alloying Materials by Using Vacuum Induction Melting to Prepare CuMn 50 Master alloy, CuNi 20 Master alloy method, three-step synthesis of CuMn 25 Ni 10 alloy material, which reduces the cost of raw materials and reduces the burning loss of elements, so the prepared CuMn 25 Ni 10 The alloy structure is dense, with few pores and inclusions, and no defects such as macroscopic and microscopic segregation; at the same time, the lower casting vacuum induction furnace of the present invention is designed with an integrated structure of copper mold and weight sensor, which can accurately Measure the weight of the casting, and transmit the weight change data to the data terminal, which is convenient for technicians to record and analyze; moreover, the down-casting vacuum induction furnace of the present invention is designed with an external sensor structure, and the furnace body made of quartz material will The inductor on the traditional crucible is adjusted on the outer wall of the furnace, which avoids the hidden danger caused by the discharge of the inductor from the structure.

Description

technical field [0001] The invention relates to the technical field of copper-based alloys, in particular to CuMn prepared by vacuum induction melting 25 Ni 10 alloy. Background technique [0002] CuMn 25 Ni 10 It is a basic material used to make resistance elements in electronic instruments, measuring instruments, and other industrial devices. It is widely used in various fields such as motors, instrumentation, automobiles, aerospace, and missile atomic energy. CuMn 25 Ni 10 It has very small resistance, temperature coefficient, low electric thermal potential to copper, high resistance stability, and high resistivity. It is a superior resistance alloy material. [0003] At present, the high-end manganese-copper alloys in the domestic market are obtained through imports. Most of the domestic production uses non-vacuum smelting processes. The alloy materials produced have high impurity content and uneven composition. The resistivity and temperature coefficient of resist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C9/05
CPCC22C1/03C22C9/05
Inventor 孙君鹏刘琦杨红艳田东松韩伊曼张毓山瑛梁建斌王文斌
Owner 陕西斯瑞扶风先进铜合金有限公司
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