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Showing posts from December, 2021

NDT Course fees

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  NDT Course fees depends on the type of NDT Course Selected, such a number of methods and the International standard chosen for the certification The Average course fees for General NDT course will be Rs.17500, This course fees Rs.17500 is for ASNT Level II Certification course of 5 NDT methods including – Ultrasonic Testing & Ultrasonic Thickness Testing, Radiography Testing & RT Film Interpretation, Visual Testing, Liquid Penetrant Testing, Magnetic Particle Testing, The split out the course fees are as follows Ultrasonic Testing – Rs.5000 Radiography Testing and RTFI – Rs.5000 Liquid Penetrant Testing – Rs2500 Magnetic Particle Testing- Rs.2500 Visual Testing – Rs. 2500 Few Institutes similar to Advanced Quality Centre  https://aqcinspection.com/  offer additional or bonus courses like Ultrasonic Thickness Gauging, Positive Material Identification PMI, Destructive Tests / Mechanical tests, etc. at free of cost. The Course for Mechanical QA QC Course shall be R...

Fillet Weld Types

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  Fillet Weld Types: The  single-fillet-welded T-joints  are indicated from both the arrow side and the other side. The symbol for a  double fillet-welded T-joint  is also Note that the assembly of two T-joints welded pieces involves  four fillet welds  represented by  two double-fillet-weld  symbols. 2. Fillet Combined  The most common fillet weld in conjunction with a bevel- or J-groove weld. The fillet weld types can be added if the bevel- or J-groove weld is on a corner or a T-joint. 3. Fillet Weld Root Penetration.  Weld penetration beyond the depth of the groove is indicated below. The first dimension gives the depth of penetration into the groove; the second dimension gives the additional penetration into the joint. 4. Dimensioning Fillet Weld Symbols.  Take pattern on the desired sizes of fillet welds, because welders usually can’t determine the dimensions of the parts to be The drawings of the welded joints are shown o...

Standards and Specifications for welding

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  WELDING INSPECTOR KNOWLEDGES: The Welding Inspector must be a high skilled technician or engineer with a good knowledge of general industry manufacture, materials, quality systems, inspection procedures and Standards and Specifications for welding as:   Standard organizations as ASTM, SAE, AISI, AWS, ASME and other institutions; Metals metallurgy, hardness tests and heat treatment; Materials properties, destructive testing and NDT methods; Terminology, weld joint geometry and welding symbols; Welding equipment, metal joining and cutting processes; Application of procedures, records, welding inspection and qualifications; Evaluation of weld and base metal discontinuities; Metric and conversion practices; Safe welding practices; 1.  Standards and Specifications for welding:   The professional and industrial organizations in the United States that lead the development of standards include: the ASTM International, the Society of Automotive Engineers (SAE), the American...

WELDING ELECTRODES AND PREHEAT REQUIREMENTS

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  The procedure requirements for welding electrodes and preheating temperatures are as follows: Welding must be done with the same process (SMAW or FCAW) used for qualification If the operator has qualified on any of the steel permitted (ASTM A36 and A588), that same operator is qualified to weld on the other and on SAE 1010 or ASTM. A welder qualified for manual shielded metal-arc welding with an  E7018  electrodes may also weld with  E7016 electrodes .Identifying electrode numbers are as follows:  a. The  70 designation  shall be understood to mean the  70 series  unless an alloy steel of higher strength is to be welded. b. The third digit indicates the position permitted. If the  digit is “1,”  the electrode may be used for welding in any position. If “2,” only the down hand position may be used. c. The  fourth digit  indicates the chemical make-up of the electrode coating. The  digit 6  indicates  low hy...

Mechanical Properties

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  The mechanical properties of a material are those properties that involve a   reaction to an applied load . The mechanical properties of metals determine the range of usefulness of a material and establish the service life that can be expected. Mechanical properties are also used to help classify and identify material. The most common properties considered are strength, ductility, hardness, impact resistance, and fracture toughness. Most structural materials are  anisotropic , which means that their material  properties vary with orientation . The variation in properties can be due to directionality in the microstructure (texture) from forming or cold working operation, the controlled alignment of fiber reinforcement and a variety of other causes. Mechanical properties are generally specific to product form such as sheet, plate, extrusion, casting, forging, and etc. Additionally, it is common to see mechanical property listed by the directional grain structure of t...

Forging

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   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...