tm associates: 3678 Bassett Street Stanta Clara, CA 95054 Phn: 408 727 8388 Fax: 408 727 8997 E-Mail: tony@ tmasc.com Home Ultrasonic Cleaning Systems Ultrasonic Probes / Meters  DI Water Systems Ultrasonic / DI Process Contact When shopping for an ultrasonic cleaning process or equipment it is important to know what you are looking for and exactly what you are trying to accomplish. The following questions will help you determine what equipment and process you require. These questions are for high end cleaning and some will not apply to general visual cleaning. If you have the information at hand the specification will be much easier. Part Volume and Cleaning Method: 1.What part [or parts] will you be cleaning, give size L, W, H of part and the material and weight of the part. __________________________________________________________________________________ 2.How many parts will be cleaned in one load? ___________________________________________________________________________________________ 3.How many parts do you need to clean in one shift, how many shifts per day? ___________________________________________________________________________________________ 4.Are there any chemical or heat restrictions? ___________________________________________________________________________________________ 5.Do you have a source of DI water, if so what is its Meg Ohm rating? ___________________________________________________________________________________________ 6.What contaminants are you cleaning from the part? ___________________________________________________________________________________________ 7.What are your criteria for "clean" and how do you define it? ___________________________________________________________________________________________ 8.How do you check the part for cleanliness, i.e. visual, or some other method? ___________________________________________________________________________________________ 9.Will you need to dry the part after cleaning? ___________________________________________________________________________________________ 10.Can you send samples for cleaning by the Manufacturer? [most companies will clean small sample lots at no charge] ___________________________________________________________________________________________ Process: 1.Determine what steps you need in your cleaning process. 2.The typical ultrasonic cleaning process consist of; A.Ultrasonic Detergent Clean B.Spray Rinse with Hot DI water C.Ultrasonic overflow Rinse with DI Water There are modifications to the above process, such as adding detergent tanks, additional rinses and dump rinses. The equipment manufacturer can be of great help in setting up the process. Samples sent in for cleaning will help define this process. Once you have decided on the process a written process sheet should be developed for that process. A typical process sheet is shown below. Cleaning Process Part # 943 Eng. OK By: Stage Chemistry Temp Power Frequency Time Ultrasonic Detergent DI @ 18 Meg Ohm / 10% V 200 Detergent 130 deg F   500 W   170 kHz   7 min.   Spray Rinse DI Water 15 Meg Ohm 110 F N/A N/A 5 min Ultrasonic Overflow Rinse DI Water @ 15 Meg Ohm 110 F 500 W 170 kHz 10 min Special Instructions: Load parts in Work Holder # 342 insert into tank slowly and turn on ultrasonics, at end of cycle remove work holder slowly and place in next station. Visually inspect parts when removed from last rinse tank and place in drying system Equipment: 1.What type of equipment are you looking for, automatic or manual? _________________________________________________________________________________________ 2.Will you require automatic indexing of the work load from tank to tank? _________________________________________________________________________________________ 3.What Services do You Have: electrical, water, exhaust, drains, etc.? _________________________________________________________________________________________ 4.What are your space requirements, how much room do you have for the system? _________________________________________________________________________________________ 5.Will the cleaning take place in a dedicated room, Clean Room or factory floor? _________________________________________________________________________________________ 6.Are there any local restrictions or regulations that may involve the cleaning system? _________________________________________________________________________________________ 7.Do you have a budget for the system? _________________________________________________________________________________________ 8.What is your time line for installing equipment? _________________________________________________________________________________________ 9.Do you want the manufacturer to install and start the equipment? _________________________________________________________________________________________ 10.Use the expertise of the equipment manufacturer to fill in the gaps in your process requirement.  _______________________________________________________________________________   Facilities: 1.Location and lay out of available space for Cleaning Line [ attach layout drawing] 2.Electrical available:_________________________________________________ 3.Drain Location and size:_____________________________________________ 4.Water Available at ____________PSI DI or House _______________________ 5.xhaust Requirements:______________________________________________ Cleaning Tables Filtration Sets of Substrates Tank 1 No Filtration Tank 1 W/ Filtration Tank 2 No Filtration Tank 2 W/ Filtration Tank 3 No Filtration Tank 3 No Filtration 1 78.46 89.30 92.26. 97.69 96.09 99.00 2 68.30 87.63 87.25 97.16 93.50 98.97 3 60.66 87.19 82.68 97.01 90.91 98.95 4 54.46 87.05 78.41 96.96 88.32 98.95 5 49.22 87.02 74.40 96.95 88.75 98.95 6 44.71 87.01 70.63 96.94 83.19 98.95 7 40.77 87.00 67.06 96.94 80.66 98.95 8 37.29 87.00 63.69 96.94 78.16 98.90   Ultrasonic Energy for Cleaning: Industrial: 50-70 watts per gallon Lab: 80-100 watts per gallon Critical;70 to 150 watts per gallon[dependent on temperature and solvent] Note above wattage is for liquid with a specific gravity of 1. Rules for sizing an Ultrasonic Tank 1.Allow 2"of fluid from bottom of work basket to bottom of tank. 2.Allow 2"of fluid over top of parts. 3.Allow 2" of freeboard  4.Allow ½" around sides of tank to work basket edges. Weights Cubic in. of useful water In Tank Lx W x[ H -2"] Allows for free board of 2"  Gallons Lx W x [H-2"] / 231 Weight of Water in tank 1 cu ft =62.5 lb Divide Cu in./1728 x 62.5= Weight Weight of Water in pipe Pipe length in Ft x dia. In "squared" x 0.34 Weight of 1 gallon of Water 8.33 lb 231 cubic in Specific Gravity 1 Temps Temp F Temp C 75 24 80 27 86 30 91.4 33 95 35 100 38 105 41 111 44 116 47 120 49 125 52 131 55 135 57 140 60 145 63 150 66