Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tin enameling treatment method

A treatment method, tin pot technology, applied in coating, metal material coating process, hot-dip plating process, etc., can solve problems such as "golden brittleness" and achieve good consistency

Inactive Publication Date: 2014-12-03
XIAN SANWEI SECURITY TECH
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gold-plated surface treatment method solves the problem of anti-oxidation very well, but there are also certain reliability problems in welding, that is, the phenomenon of "gold brittleness"

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A kind of enamel processing method of the present invention is characterized in that comprising the following steps:

[0014] (1) First, deoxidize the lead wire, and then wrap the root with gauze;

[0015] (2) Then immerse the gold-plated lead wire coated with flux in the special tin pot for enamel tinning for 2s~3s, and keep the temperature between 250℃~270℃;

[0016] (3) Then immerse the lead wire in an ordinary tin pot for secondary tinning, the time is 2s~3s, and the temperature is kept between 250℃~270℃.

[0017] In the tin enamel treatment method described in the present invention, the wrapping length of the lead wire in the step (1) is 5 mm to 10 mm. In the step (2), the content of gold impurities in the solder in the enamelled tin pot is not less than or equal to 1%. The gold impurity content of the solder in the step (3) is less than or equal to 0.3%. The lead wire deoxidization in the step (1) is treated by heating or grinding with sandpaper.

[0018] The...

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 tin enameling treatment method, and belongs to the field of chemical treatment processes. The tin enameling treatment method is characterized by comprising the following steps: (1) the root of a lead is wrapped by a gauze; and (2) a gold plating lead coated with soldering flux is dipped for 2-3 s in a special tin pot for tin enameling; and the temperature is kept within 250-270 DEG C; and (3) the lead is dipped in a general tin pot again for secondary tin enameling; and the time and temperature are the same with that of the tin pot in the step (1). The static tin dipping is performed for a tin enameling circuit board by adopting double tin pots, and the tin enameling operation is finished more thoroughly through twice heat impact under the precondition of no mechanical damage, so that the consistency is good; and the tin enameling treatment method has the advantages of simple process and easy promotion.

Description

technical field [0001] The invention belongs to the field of chemical treatment technology, and in particular relates to a tin enamel treatment method. Background technique [0002] Gold is widely used in the electronics industry because of its advantages such as good chemical stability, not easy to oxidize, good welding performance, wear resistance, good electrical conductivity and small contact resistance. The role of gold is to protect the surface of the fresh nickel layer and prevent it from oxidizing, thereby improving solderability. This method is mostly used in the pad plating of printed boards and the lead plating of electronic components. The gold-plated surface treatment method solves the problem of anti-oxidation well, but there is also a certain reliability problem in welding, that is, the phenomenon of "gold brittleness". In recent years, more and more attention has been paid to the embrittlement and insufficient strength of solder joints caused by "golden br...

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): C23C2/08C23C2/38
Inventor 贾卫东魏军锋
Owner XIAN SANWEI SECURITY TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com