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Qqi Quantitative Quality Indicator Test Gauge Assuring Proper Field Direction

Categories Magnetic Particle Testing
Brand Name: TMTeck
Certification: CE
Place of Origin: China
MOQ: 1
Payment Terms: T/T, Western Union
Supply Ability: 20PCS/Two weeks
Delivery Time: 4-6 work days
Packaging Details: Carton
Price: Negotiation
product name: QQI TEST GAUGE
brand: TMTeck
original: China
Type: Magnetic Particle Testing
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    Qqi Quantitative Quality Indicator Test Gauge Assuring Proper Field Direction


    Quantitative Quality Indicator (QQI)


    The Quantitative Quality Indicator (QQI)or Artificial Flaw Standard is often the preferred method of assuring proper field direction and adequate field strength. The use of a QQI is also the only practical way of ensuring balanced field intensity and direction in multiple-direction magnetization equipment. QQIs are often used in conjunction with a Gauss meter to establish the inspection procedure for a particular component. They are used with the wet method only, and like other flux sharing devices, can only be used with continuous magnetization.

    The QQI is a thin strip of either 0.002 or 0.004 inch thick AISI 1005 steel. A photoetch process is used to inscribe a specific pattern, such as concentric circles or a plus sign. QQIs are nominally 3/4 inch square, but miniature shims are also available. QQIs must be in intimate contact with the part being evaluated. This is accomplished by placing the shim on a part etched side down, and taping or gluing it to the surface. The component is then magnetized and particles applied. When the field strength is adequate, the particles will adhere over the engraved pattern and provide information about the field direction. When a multidirectional technique is used, a balance of the fields is noted when all areas of the QQI produce indications.

    Some of the advantages of QQIs are: they can be quantified and related to other parameters, they can accommodate virtually any configuration with suitable selection, and they can be reused with careful application and removal practices. Some of the disadvantages are: the application process is somewhat slow, the parts must be clean and dry, shims cannot be used as a residual magnetism indicator as they are a flux sharing device, they can be easily damaged with improper handling, and they will corrode if not cleaned and properly stored.

    Above left is a photo of a typical QQI shim. The photo on the right shows the indication produced by the QQI when it is applied to the surface a part and a magnetic field is established that runs across the shim from right to left.

    Faq:


    Q: Are You Trading Company Or Manufacture?


    A: We Are Manufacture


    Q: How Long Is Your Delivery Time?


    A: Generally It Is 2-3 Days Upon Advanced Payment For Small Orders Or It Need To Negotiate For Quantity Order Over 50pcs


    Q: How Do You Send The Goods?


    A: We Usually Send Goods Via Dhl,Tnt,Fedex For Small Order.


    Q: What Is Your Terms Of Payment?


    A: Payment Is 100% In Advance Via T/T ,Paypal,Western Union.


    Q: How About Your After -Sales Service?


    A: 2 Year Warranty For All Kinds Of Gauges Except Consumed Accessories.

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