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How do you remove oxide layer from steel after vacuum heat treatment?
It is important to heat treat in vacuum as otherwise lots of oxides form; after heat treat in vacuum oxides are removed, if part small enough, by use of an abrasive grit pad, such as Scothbrite A, and cleaned with acetone followed by isopropyl alcohol. If not protected, however, oxides will continue to form in air
Difference between module testing and unit testing?
unit tests are a collection of tests written by a developer during the software development process. Module tests are a collection of tests written by a tester after some code has been written by a developer.
How software testing differ from program testing?
Software testing and program testing differ in scope and focus. Software testing evaluates the complete software system, including functionality, performance, security, and user experience. It ensures the software meets requirements and works as intended in real-world conditions. Program testing, on the other hand, focuses on individual components or programs within the software. It primarily checks for correctness, logic errors, and bugs in specific code units or algorithms. While program testing is a subset of software testing, software testing covers broader aspects, including integration between components and how the system interacts with external environments. If you are looking for software testing course then I will suggest you for Uncodemy. It is one of the best institute for doing this course online/offline. Also you will get 100% job assistance after completion of course.
Is the heat treatment of polymers possible?
Yes but it has very different effects than heat treating a metal.When plastics are molded a certain amount of what is called molded in stress is applied when the part is cooled. The amount of molded in stress depends on the shape of the part cooling time etc. To reduce molded in stress generally you would increase the mold temperature and increase cooling time. However that gives us longer cycle times which costs money. With that said...Heat treating plastics will help get rid of molded in stresses however will normally cause part warppage. On the other hand when done at lower temperatures heat treating a plastic for a short period of time prepares a plastic surface to be painted.Heat treating a plastic for painting changes the surface energy of the material making it easier to apply the paint and produces a better adhesion.
Difference between destructive testing and non destructive testing?
Destructive testing will render the part unusable for its intended purpose (e.g. it is cut up for analysis, or fatigue tested for life). Non destructive testing will, after testing, allow the part to be used for its intended purpose (e.g. test for leakage, flow, or resistance).
