Conformance Inspection
DTB’s Conformance Inspection facility provides the capability to nondestructively,
and destructively inspect randomly selected parts from a production lot of a fully
qualified and tested vendor, to confirm continued conformance to technical data.
Dimensional Inspection
Our temperature controlled 1000 sq. ft. dimensional lab consists of 3 Coordinate
Measuring Machines (Leitz, Mitutoyo and Starett), a Computer controlled Optical
Comparator, and a surface roughness measuring station. Our conventional open setup
measuring equipment feature 3 large surface plates, height gages, calipers, micrometers,
over 250 thread gages and over 1000 plug gages. We have an experienced staff of
8 full time technicians and 1 engineer. Dimensional Inspection assures product compliance
with design specifications by assessing the geometric characteristics that can affect
both the reliability and functionality of the part, within the desired level of
accuracy and in accordance with the guidelines of ASME Y14.5.
Material Verification
At Dayton T. Brown, Inc. we have the tools in our Metallurgy and Materials Laboratory
to confirm your ferrous or non-ferrous materials. Our Arc emission spectrometer
is equipped with a comprehensive standards library for highly accurate quantitative
compositional analysis of all types of steels, cast irons, aluminum alloys, nickel
and cobalt base super alloys, titanium base alloys, and copper base alloys. The
metallurgical laboratory has a fully equipped SEM/EDS system with calibrated digital
image acquisition and feature measurements. Typical applications include rapid qualitative
determination of alloy and coating compositions, and detailed microfractographic,
microstructural, and corrosion analyses. Physical and chemical properties are required
to insure conformance to customer’s designs and specifications.
Process Verification
Correct manufacturing processes are critical in the function and safe performance
of your test item. The Dayton T. Brown Conformance Inspection team can verify your
processes in our lab with non-destructive and destructive methods. The following
is a list of some processes we routinely examine: Hardness, Shot Peening, Temper
Etching, Macro and Micro hardness, grain flow, plating/coating types and thicknesses,
thread forming and surface texture.
Automated High Volume CMM Inspection
We have 2 programmable 3 axis Coordinate Measuring Machines (Leitz and Mitutoyo)
to meet your high volume or production inspection requirements. Each is capable
of confirming all Geometric Dimensional Tolerances per ASME Y14.5.
Non-Contact Dimensional Inspection
We have a programmable (Optical Gauging Products) optical Comparator with auto-edge
detection and capabilities of 10X, 20X and 50X magnifications. Capabilities include:
2D measurement analysis and GD and T evaluations. The comparator can be run manually
or under direct computer control using either surface or profile illumination.
NDI Non-Destructive Inspections
Liquid Penetrant
DTB has the capability of performing liquid penetrant inspections to procedures
based on ASTM E-1417. DTB has 2 certified level III and 2 certified level II technicians
per ASNT SNT-TC1A.
Magnetic Particle
DTB has the capacity to inspect parts comprised of magnetic materials up to 9.5
feet in length. Additionally, DTB has portable magnetic particle inspection equipment.
The magnetic particle inspections are performed IAW procedures based upon ASTM E-1444.
DTB has 2 certified level III and 2 certified level II technicians per ASNT SNT-TC1A.
Surface Roughness Analysis
Our Surface measuring station (Mahr-Federal) utilizes a motorized non-skidded stylus
measuring probe to determine surface roughness parameters per ASME Y46.1.
First Article Inspection
DTB routinely performs First Article Testing (FAT) for testing for military and
commercial suppliers. A complete FAT begins with a review of the technical data
package supplied and a visual examination of the part. Dimensional Inspection starts
with numbering of the drawing dimensions to create an itemized list of the features.
A data sheet is created of all nominal dimensions. Prior to dimensional setup a
complete review of the drawing datum structure is performed to create an inspection
plan. The appropriate dimensional equipment is selected depending on part tolerances,
accessibility and measurement efficiency. Upon completion of the inspection the
actual values are recorded on the data sheet and reviewed by engineering. The part
can undergo a Non-Destructive Inspection, hardness and or a destructive metallurgical
analysis.
Part Profiling
At Dayton T. Brown, Inc. we can scan your products critical profiles using the latest
measurement technology. We can confirm compliance with your tolerances and display
the results with color coded printouts including: nominal part shape, tolerance
bands, actual shape and deviations. We can accommodate your CAD files to define
nominal part shape or develop one from your supplied drawings.
Dimensional Lab Equipment and Capabilities
Leitz CMM
The Leitz model 12 10 6 Coordinate Measuring Machine is of laboratory grade
with accuracies to ±1 micrometer (0.000039 inch).
It has a measurement volume of
47 x 39 x 24 inches and a maximum weight capacity of 3,000 pounds. The Leitz CMM
is installed in DTB’s temperature controlled dimensional lab on an 8 x 6 x 4 foot
concrete slab designed to minimize externally induced vibrations.
The Leitz CMM is programmable, allowing automatic measurements of multiple part samples. An analog
probe allows continuous scanning in all three axes simultaneously.
Its Quindos software provides geometric tolerancing calculations along with gear and
spline measurement capability.
Mitutoyo CMM
Model Crysta-Apex C 7106, is a direct computer controlled
high speed programmable CMM with a measuring range of 27 in x 39 in x 23 in
and an accuracy ± .0002”.
Capabilities include 2D and 3D measurement analysis, GD and T
evaluations, form, contour and inspection to CAD models.
The CMM is fitted with a Motorized Renishaw touch trigger probe.
Starrett CMMs
DTB owns two Starrett CMMs. The software allows 2D calculations for per GD and T requirements.
Profilometer
The dimensional lab contains a (Mahr-Federal) digitally filtered, non-skidded probe surface roughness
measuring station.
It is capable of surface roughness analysis per ASME B46.1.
Optical Comparator
DTB owns an Optical Comparator from Optical Gaging Products, which has both
surface and contour illumination as well as auto edge-detection system.
It’s features
and capabilities include: a 14 in screen, 10x, 20x, 50x magnifications, computer
controlled, auto-edge detection system, Linear accuracy ± .0002, 2D measurement
analysis and GD and T evaluations.
Click here to see a sample of "Typical CMM
Inspection Data".