Unlock instant, AI-driven research and patent intelligence for your innovation.

Apparatus and method for providing an inerting gas during soldering

A technology of welding process and inertization, applied in the direction of welding equipment, welding equipment, auxiliary equipment, etc., can solve the problems of increasing the total cost of end users

Active Publication Date: 2013-07-17
AIR PROD & CHEM INC
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the overall cost to the end user

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
  • Apparatus and method for providing an inerting gas during soldering
  • Apparatus and method for providing an inerting gas during soldering
  • Apparatus and method for providing an inerting gas during soldering

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0062] Example 1: Effect of Pore Size of Porous Conduit on Gas Flow Pattern

[0063] Three diffusers or perforated conduits with three different grade levels listed in the table below were tested. Lower grades represent smaller pore sizes and porosity of the diffuser. By making room nitrogen (house N 2 ) into each seamless porous duct and measured upstream of each diffuser at a given nitrogen flow rate (P u p) and downstream (P down ) to carry out the test. The pressure drop ΔP across the diffuser is determined as follows:

[0064] ΔP=P up -P down

[0065] Then, the average pressure along the diffuser is calculated as follows:

[0066] P ave =(P up +P down ) / 2

[0067] When ΔP / P ave Much less than 1, the flow out of the diffuser duct can be considered to be in a laminar flow mode. On the contrary, when ΔP / P ave Near 1, gas turbulence usually dominates. For some embodiments, it is preferred that the porous conduit provides a laminar gas flow pattern.

[0068] a...

example 2

[0072] Example 2: Effect of Heating Diffusers for Nitrogen Inertization in Wave Soldering

[0073] In this example, at least one of the porous conduits is located between two solder waves and has a metal fin inserted into a reservoir of molten solder so that the temperature of the porous conduit diffuser can be maintained at the melting point of the solder above. The heated diffuser can avoid potential clogging problems such as by solder splatter / freeze and by flux vapor condensation on the surface of the diffuser. An example of a configuration used for this experiment is Figure 9 shown.

[0074] Figure 19 available at Figure 18 Results for the oxygen concentration around the solder reservoir at positions 1 to 8 indicated in , with a static plate on top of the solder reservoir and no top cover (eg Figure 5 top cover shown in); Figure 20 Repeat the oxygen analysis, but with the top cover and vent (eg Figure 5 shown in ). Based on visual observations, any weld spla...

example 3

[0075] Example 3: Applying a Non-Adhesive Porous Sleeve to a Center Diffuser Duct

[0076] In this example, at least one of the porous conduits is located between two solder waves and has a metal fin inserted into a reservoir of molten solder so that the temperature of the porous conduit diffuser can be maintained at the melting point of the solder above. The heated diffuser can avoid potential clogging problems such as caused by solder splatter / freeze and by flux vapor condensation on the surface of the diffuser. An example of a configuration used for this experiment is Figure 9 shown.

[0077] The central diffuser duct is covered with a sleeve made of ePTFE (expanded polytetrafluoroethylene). ePTFE was formed into catheter shapes and white, manufactured by Phillips Scientific Inc., item number TB3000. The porous conduit is expandable only along the length of the conduit and not in the diameter direction. The material is capable of withstanding 315°C and has an average ...

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
densityaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to an apparatus and a method for providing an inerting gas during soldering, specifically to an apparatus and a method for providing an inerting gas in a work piece soldering process. The apparatus is disposed on a solder storage container and is provided with multiple porous pipes communicating with an inerting gas fluid. The method is used to provide the inerting gas for awave-soldering device. The method includes the steps of disposing the apparatus on at least one edge of the solder storage container. The device includes the multiple pipes having one or more openings communicating with an inerting gas fluid. At least one of the pipes is made of porous non-adhesive material such as sleeve or containing a non-adhesive coating.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to the following applications: U.S. Provisional Application No. 61 / 313,376, filed March 12, 2010; U.S. Provisional Application No. 61 / 313,372, filed March 12, 2010; U.S. Provisional Application No. 61 / 321,011 filed on April 5, 2010; U.S. Provisional Application No. 61 / 320,939 filed April 5, 2010; U.S. Provisional Application No. 61 / 323,607 filed April 13, 2010; and July 2010 U.S. Provisional Application No. 61 / 365,607, filed May 19. Background technique [0003] An apparatus and method for providing an inertizing gas during a welding process is described herein. More specifically, apparatus and methods for providing an inertizing gas during wave soldering using nitrogen and / or other inertizing gases are described herein. [0004] Workpieces such as printed wiring boards or circuit boards have increasingly smaller wettable surfaces that require solder application and bond...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/34B23K3/08
CPCB23K1/08B23K3/08B23K31/02H05K3/34
Inventor 董春G·K·阿斯拉尼安R·高希王开玉吴亮
Owner AIR PROD & CHEM INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com