Nondestructive Testing service providers

   Forging is a manufacturing process involving the   shaping of metal  using localized   compressive forces . Forging is often classified according to the temperature:   “cold”, “warm”, or “hot” forging.   Forged parts can range in weight from less than a kilogram to 580 metric tons. Forged parts usually require further processing to achieve a finished part. Some metals may be  forged cold , but  iron and steel  are almost always  hot forged . Hot forging prevents the work hardening that would result from cold forging, which would increase the  difficulty of performing secondary machining operations on the piece.   While work hardening may be desirable in some circumstances, other methods of hardening the  piece, such as heat treating, are generally more economical and more controllable. Alloys that are amenable to precipitation hardening, such as most aluminium alloys and titanium, can be hot forged, followed by har...

  Hardness is the resistance of a material to localized deformation. The term can apply to   deformation from indentation, scratching, cutting or bending . In metals, ceramics and most polymers, the deformation considered is plastic deformation of the surface. For  elastomers  and some polymers,  hardness is defined at the resistance to elastic deformation  of the surface. The lack of a fundamental definition indicates that  hardness is not a basic property  of a material, but rather a composite one with contributions from the yield strength, work hardening, true tensile strength, modulus, and others factors. Hardness measurements are widely used for the  quality control of materials  because they are quick and considered to be nondestructive tests when the marks or indentations produced by the test are in low stress areas. There are a large variety of  methods used for determining  the hardness of a substance, as can be seen b...

  Welding is a process of joining metals by process of heating.  Most of the weld made are manual. It is possible that the weld may have various defect formation due to parameters of welding and poor workmanship. Why is Welding Inspection Methods  important? Therefore the weld made should be tested for defects and quality of weld metal. To ensure the joint is strong and suitable for the purpose the product is designed for. The Welding inspection methods can be broadly divided into two types Destructive Testing and Non Destructive Testing   Destructive Testing otherwise called as Mechanical Testing. It is a qualitative analysis process, which identifies the qualities like Tensile Strength, % of elongation, Hardness, Toughness, Chemical Content of metal and Micro Structure formed during welding process. But destructive testing cannot be done on all the weld joints made. Instead it is carried out on a sample per lot. Mostly the a...