Project #1 / Radar Technologies / Clients / Media

Name

Project #1

Test Objective

Replacement of Vapor Degreaser for cleaning of PCB's, ceramic substrates with RMA flux

Witnessed

No

Confidential

No

Help Implementing

No

Submission Date

01/02/1996

Representatives

William B. Field

Substrates

Ceramics
Plastic

Sample Type

PCB and substrates

Product Use

Radar systems

Percentages Cleaned

Weight Min

Weight Max

Approximate Size

1 x 3 inches

Approximate Size ID

Small

Weight Range ID

Less than 1 lb

Shape

Rough

Hardness

Hard

Shape Type

Complex

Return Samples

Yes

Return Sample Address

Contaminants

Fluxes

Samples Available

Yes

Pre Clean Manufacturing Step

solder flowing

Post Clean Manufacturing Step

subassembly

Parts Cleaned Per Week

20

Parts Cleaned Per Bath

2

Frequency

PSI

Equipments

Vapor Degreasing

Vendor

Branson L-400R

Cleaning Chemicals

Methylene Chloride

Concentration

Cleaning Temp

104

Cleaning Time

2

Cleaning Water Type

Problems With Current Method

Hazardous waste generated by the degreaser. Safety concerns, explosive limits

Purpose of Cleaning

removal of flux & solder paste residues

Rinse Time

Vapor rinse 2 min

Rinse Temp

Rinse Water Type

Drying Method

No relation

Drying Time

Drying Temp

Storage Type ID

How Stored

How Long Stored

Analysis Method

Visual, microscopic

Performance Test

pre-alignment electrical test

Comments or Concerns

no ultrasonics, clean parts, temp exposure

Summary

The lab suggested separating the two contaminants and cleaning the coating in the vapor degreaser and the flux in an aqueous bath. The lab had tested Ecolink 2005 and NMP. Client opted to switch over to a two solvent system using Axarel and IPA.

Implementation

No

In Progress

No

Technolog Transfer

No

Analysis Only

No

Part Picture

Yes

Name	Class	Section
Trial #0	Trial	3
Trial #1	Trial	3
Trial #2	Trial	3

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Project #1