Annealing process of sealing welding flux

An annealing process and sealing solder technology, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of poor product gloss, inconsistent fluidity, large hardness difference, etc., to achieve improved product gloss, consistent fluidity, shrinkage The effect of poor hardness

Active Publication Date: 2010-10-20
WUXI RIYUE ALLOY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to propose a kind of annealing process of sealing solder to realize the hardness difference of batch products is small, the product Good gloss and consistent fluidity during melting and welding of products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the annealing process of the sealing solder includes the following steps:

[0020] (1) Spray absolute alcohol on the inner wall of the annealing furnace, use clean gauze to wipe the inner wall of the furnace, and thoroughly remove the oil and dust attached to the inner wall of the furnace;

[0021] (2) When the inner wall of the furnace is cleaned, the alloy materials to be annealed are placed in the furnace in a layered and orderly manner; On the rack, there is no heavy pressure between the alloy materials and there is a gap;

[0022] (3) After the alloy material is placed, vacuumize the annealing furnace so that the vacuum degree of the annealing furnace reaches 0.1Pa;

[0023] (4) When the vacuum degree of the annealing furnace reaches 0.1Pa, heat the annealing furnace at a heating rate of 10°C / min, so that the temperature of the annealing furnace reaches 420°C, keep the temperature of the annealing furnace at 420°C for 30 minutes, and then stop ...

Embodiment 2

[0029] The difference with the above-mentioned embodiment is:

[0030] When the vacuum degree of the annealing furnace reaches 0.1Pa, heat the annealing furnace at a heating rate of 10°C / min to make the temperature of the annealing furnace reach 500°C, keep the temperature of the annealing furnace at 500°C for 40 minutes, and then stop pumping the annealing furnace At the same time, fill the annealing furnace with high-purity nitrogen to make the pressure in the annealing furnace reach 0.2 Pa; then increase the heating power of the annealing furnace to raise the temperature of the annealing furnace to 680 ° C The temperature was kept at 680°C for 3 hours;

[0031] After keeping the temperature of the annealing furnace at 680° C. for 3 hours, cut off the heating source, and allow the alloy material in the annealing furnace to cool naturally until the annealing furnace is started.

Embodiment 3

[0033] The difference with the above-mentioned embodiment is:

[0034] When the vacuum degree of the annealing furnace reaches 0.1Pa, heat the annealing furnace at a heating rate of 10°C / min to make the temperature of the annealing furnace reach 600°C, keep the temperature of the annealing furnace at 600°C for 60 minutes, and then stop pumping the annealing furnace At the same time, fill the annealing furnace with high-purity nitrogen to make the pressure in the annealing furnace reach 0.3Pa; then increase the heating power of the annealing furnace to raise the temperature of the annealing furnace to 700 ° C The temperature was kept at 700°C for 4 hours;

[0035] After keeping the temperature of the annealing furnace at 700° C. for 4 hours, cut off the heating source, and allow the alloy material in the annealing furnace to cool naturally until the annealing furnace is started.

[0036] In the above-mentioned embodiments, the requirements for the vacuum degree of the annealin...

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PUM

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Abstract

The invention discloses an annealing process of sealing welding flux, which comprises the following steps: cleaning a furnace liner of an annealing furnace; placing alloy materials to be annealed into the furnace liner after the cleaning is completed; carrying out vacuum pumping on the annealing furnace; heating the annealing furnace at a temperature rise speed of 10 DEG C / min when the vacuum degree of the annealing furnace reaches 0.1 Pa; carrying out primary heat insulation for 20 to 60 minutes when the temperature reaches 420 to 600 DEG C; stopping the vacuum pumping; filling nitrogen gas; raising the temperature of the annealing furnace to 600 to 700 DEG C when the pressure intensity inside the annealing furnace reaches 0.1 to 0.3 Pa; carrying out secondary heat insulation for 120 to 240 minutes; and stopping the heating so that the alloy materials can be naturally cooled. The annealing process of the invention can overcome the defects of large hardness difference of batch products, poor product lustrousness, nonuniform fluxion property during product melting welding and the like in the prior art for realizing the goals of small hardness difference of the batch products, good product lustrousness and uniform fluxion property during the product melting welding.

Description

technical field [0001] The invention relates to the magnetron manufacturing technology in the vacuum electronics industry, in particular to an annealing process of sealing solder. Background technique [0002] The core component of the microwave oven used in people's daily life is a magnetron, which involves relatively complex vacuum electronics manufacturing technology. In the magnetron manufacturing technology, in the sealing and welding between the oxygen-free copper tube and the oxygen-free copper blade in the magnetron, it is necessary to use alloy materials such as silver, copper and nickel to complete. Moreover, the alloys of silver, copper and nickel have higher requirements, for example, the requirements for the alloy's cleanliness, non-oxidation, fluidity and other indicators are very strict. Since the hardness of silver, copper and nickel alloys will increase during processing and deformation, it will inevitably bring difficulties to subsequent processing, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D9/00C21D11/00
Inventor 晏弘
Owner WUXI RIYUE ALLOY MATERIALS
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