ovens

  1. J

    CQI-9 - Can OEM do Oven Studies?

    We use aging and annealing ovens and do not have the time or resources to devote to doing oven studies on all of them each year. The OEM of our ovens may be able to do it, but they believe they have to be "certified" to conduct studies to CQI-9... Couldn't they do it? I would be involved and...
  2. W

    Equipment for Oven Calibration, Uniformity and System Accuracy Tests

    Hello, This whole NADCAP/AMS2750 field is new to me so please forgive my ignorance. We are performing oven (mostly grieve ovens) controller calibrations, uniformity surveys and system accuracy test in house with some outdated homegrown equipment. I am looking for a data acquisition...
  3. S

    Performing PQ on a Small (tabletop) Air Heat Treating Oven

    We have a very small (tabletop) air heat treating oven and an observation was made that this needs to be validated as a special process. We have no hardness tester, but one is available to us. How many samples are sufficient to demonstrate the process has been validated? IQ and OQ have been...
  4. T

    Auditor states my Oven Thermocouples must be Calibrated

    Hello all, We, are an AS9100 registered Organization. I have been issued an NCR due to customer auditing. Although I understand much of what has been said here, I'm sorry to say I remain very confused, and need some additional guidance on the particulars... The exact wording on the NCR is as...
  5. I

    Is it common practice for a bake oven to require a CQI-9?

    Good Morning, I am wondering if someone can help me. We are a manufacturing facility that produces fasteners for Aerospace and Automotive. We currently out source our heat treating but do our own passivation in house. For some fasteners we are required to bake after passivation for 4...
  6. M

    Traceable Calibration Of An Oven Thermometer

    The story behind this is way too long to get into at the moment ... Does anyone know of a company who could provide a traceable calibration for an oven thermometer (i.e. Taylor 5931, Cooper 24HP-01-1)? Yes, the kind that retail for about $5. This probably seems as crazy to you as it does to...
  7. D

    How to Calibrate and Verify a Heating Oven

    Hello guys. Just want to do a verification with our heating oven range is up to 150?C. I have here a digital thermometer, but I want to know if what type of thermocouple should i use during the verification, I need some 3 meters long thermocouple. Although I do have 1 meter long of type J and K...
  8. S

    Paperless Temperature Recorder for Temperature Surveys on Heat Treatment Ovens

    Hi, I am looking for a paperless temperature recorder to be used to carry out temperature surveys on heat treatment ovens in accordance with AMS2750. It needs to be 18 channel and have a secure non editable data output. We will use thermocouple input for the readings. I have been...
  9. G

    SPC in Heat Treatment Workshop

    I'm responsable for implementing SPC in a Heat Treatement workshop.I have the following differences: 1) Is a special process- I can't analize process paramenters ( temperature, gas etc. ) I have to make SPC for process results ( Case depth ,hardness etc. ) 2) Process results are obtain after 3...
  10. WEAVER

    Thermocouple Extension Wire for Temperature Measurement in an Oven

    I need to get the temperature of the chip while being cured inside an oven for about 2 hrs 175 deg. celsius. the condition should be that the sensor is also covered with the paste onto the chip and we need six points. the paste would then be hardened after being exposed to this condition and i...
  11. P

    NADCAP Certified - Heat Treat Continuous Belt Driven Oven question

    Is there anyone that works for a spring manufacturer that is NADCAP certified for the Heat Treat process? I have questions regarding our continuous belt driven ovens. Any help would be greatly appreciated. My question is this: Is Stress Relieving of stainless steel wire considered a Heat...
  12. L

    Are Outside Calibration Companies required to NADCAP Certified?

    Can anyone tell me if outside calibration companies required to nadcap certified? I have air furnace ovens that we use for aging and dip braze pre-heat and solution heat treat, once a month we have an outside company come in and perform all tus test, do i need to flow down to them the...
  13. A

    Calibration Requirements after Exceeding the Calibration Due Date

    Hi all, I dont know wether this thread already exist or not, cannot find it. :( I am in charge of company's calibration lab. I have a problem that required help from Elsmar Cove members. Within our composites manufacturing process, there is a process that need composites to be cured inside...
  14. N

    Difference between different types of Benchtop Convection Ovens

    Hi all, I came across a few types of bench top ovens and I am not sure about the difference. Please help me if you know. Many thanks. 1. Forced Air convection 2. Natural Air convection 3. Gravity Convection Regards.
  15. J

    Pyrometry Field Test Instrument to perform TUS (Temperature Uniformity Surveys)

    I have a recorder that is normally used by my technician to perform TUS (Temperature uniformity surveys). The production recorder went down so they borrowed my Field Test instrument. They have used it for three weeks. I now have to perform TUS on several ovens. Can I still use this unit for the...
  16. M

    TS 16949 and Form, Fit or Function? What about Calibration of Oven Controllers?

    First time post and pretty much a quality newbie, so be gentle. My company recently went through a surveillance audit with a finding for uncontrolled measurement equipment being used on the floor. Now I'm part of a teaam reviewing the calibration system for the entire plant. I'm struggling...
  17. K

    Pyrometry Question - Furnace and Oven Instrument Calibration IAW AMS 2750

    Hello all- I'm not sure if this is the correct forum or not , but am hoping someone with knowledge of the subject responds. My question is in regards to furnace / oven Instrument Calibration IAW AMS 2750. Paragraph 3.2.5.5 states "Sensitvity shall be checked during calibration. See Table...
  18. N

    Can a Calibrated Digital Thermometer be used to monitor my oven?

    hi all, my dept is an accredited lab doing soil testing and the samples are required to be placed inside an oven. does the oven need to be calibrated by an accredited lab? can i just send my digital thermometer to a accredited lab and get it calibrated and then use the digital thermometer...
  19. B

    Calculating Measurement Uncertainty in Oven Calibration (using thermocouples)

    Hi all, I got trouble with calculating measurement uncertainty of oven calibration. I used 8 thermocouples along with datalogger (8 channels) to measure temperature at 8 points of working area of the oven. The temperature was recorded every 5 minutes within 2 hours. Then, i calculated the...
  20. W

    Oven Leak Test Method - Integrity of the chamber to hold gas

    Hi Our company purchased a vacuum oven for purpose of a storage chamber. there is no need for sterilization or deprogenation. Product will be placed in the oven...vacuumed and then overlayed with gas (at atm pressure) for 24 hours. I am not sure if the oven can handle pressure, but i want...
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