Method for preparing silver-magnesium-nickel alloy billets

A technology of silver-magnesium-nickel alloy, which is applied in the field of vacuum precision melting and casting preparation of silver-magnesium-nickel alloy ingots, can solve the problems of oxidized surface foaming, burning loss and difficult control of sheets, etc., and achieve constant quality, precise control, and reliable composition. control effect

Inactive Publication Date: 2010-12-15
SINO PLATINUM METALS CO LTD
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of silver-magnesium-nickel alloy ingot - high vacuum degassing three-stage feeding vacuum precision casting method. This method can solve

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing silver-magnesium-nickel alloy billets
  • Method for preparing silver-magnesium-nickel alloy billets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] 1. Process

[0014] (1) Preparation of silver-magnesium master alloy: After degassing 920 grams of silver (purity 99.99%) in a vacuum induction melting furnace, 80 grams of electrolytic Mg (purity 99.95%) were added to melt and cast silver-magnesium alloy ingots. Sampling is carried out for compositional analysis, containing magnesium: 7.85%, and then the silver-magnesium alloy ingot is rolled into sheets, and cut into blocks for later use.

[0015] (2) Silver-magnesium-nickel alloy batching: Feed the commonly used alloy grades separately, with a total of 10,000 grams per furnace, and a total of 8 furnaces (see Table 2 below). All magnesium is added in the form of silver-magnesium master alloy, and the burning loss rate of magnesium is considered to be 0.03% of the total weight of Mg material; ②Each furnace of silver-magnesium master alloy is divided into two equal parts and wrapped with silver skin to facilitate secondary feeding; ③ Roll the nickel sheet into a thin s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing silver-magnesium-nickel alloy billets, which comprises the following steps of: preparing silver-magnesium intermediate alloy from Ag and Mg alloy elements by adopting a vacuum fusion casting technique; and proportioning Ag and Ni alloy elements and the silver-magnesium intermediate alloy according to a component proportion of a silver-magnesium-nickel alloy mark, putting the silver-magnesium intermediate alloy and Ni into a multistage charging system by using a vacuum intermediate-frequency induction furnace capable of performing multistage charging in vacuum respectively, and preparing the silver-magnesium-nickel alloy billets by precision processes of degassing, refining, heat insulation and the like. The gas content of the Ag and the oxidation of the magnesium are effectively controlled, the billets prepared by casting molding are directly prepared into plates, sheets or strips by cold-rolling processing, internal oxidation (800 DEG C/2h) is performed in air by using a resistance furnace, and 'bubbles' are not produced on the surface of the material. The method for preparing the silver-magnesium-nickel alloy billets solves the problems that the burning loss of a little amount of additive component Mg is not easy to control and the plates and the strips prepared from a casting blank by cold rolling produce 'bubbles' on the internal oxidation surface in the atmosphere, and provides stable process guarantee for subsequent use of the materials.

Description

technical field [0001] The invention relates to an internally oxidized elastic electric contact material for aerospace, in particular to a method for preparing a silver-magnesium-nickel alloy ingot by vacuum precision melting and casting. Background technique [0002] Silver-magnesium-nickel alloy is an ideal material for miniature relay contacts and reeds used in aerospace precision instruments. It is characterized by good elasticity, electrical conductivity, thermal conductivity and corrosion resistance after internal oxidation, stable hardness, and creep speed is only one tenth of that of pure silver. This material is the main contact material for the integration of reed contacts of small and medium-sized military and civilian sealed relays. It is suitable for various micro and small switches, relay elastic contacts, integrated reed contacts, plug-in component reeds, large Shunt contacts of switches, heat-conducting spring splints of electronic tubes, instrument contacts...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C1/03B22D7/00B22D27/15
Inventor 孔建稳陈登权李靖华杨国祥谢宏潮蒋传贵裴洪营张庆国王健张利斌张国全朱峻昆
Owner SINO PLATINUM METALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap