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  What is a cast iron? Cast iron are ferrous alloys with greater than 2% carbon. They also contain small amounts of other materials such as silicon, sulphur, manganese, & phosphorous. In general it consists alloys of carbon & iron. They are the least expensive of all metals and is found plentiful resource than next to aluminium. What makes cast iron an important material? It is a cheap metallurgical substance. Good mechanical rigidity and good strength under compression. Easy castablility. Good machinability can be achieved when a suitable composition is selected. Composition : Carbon – 3.0 to 4.0% Silicon – 1.0 to 3.0% Manganese – 0.5 to 1.0% Sulphur – upto 0.1% Phosphorus – upto 1.0% Influence of cooling rate on the properties :   Types : Grey (General purpose) White (Hard & Wear resistant) Malleable (Heat treated for ductility) Spheroidal Graphite (Some ductility) Grey Cast Iron: It is the least expensive & the most common type of cast iron. It is an alloy of carbon

  Quality Assurance Glossary This blog gives you the abbreviations and definitions of terms used in quality Assurance department. Abbreviations The following abbreviations apply to this Project Quality Plan: BOM                         Bill of Material CAV                          Characteristic Accountability and               Verification CAR                          Corrective Action Request CAPA                       Corrective Action & Preventive Action CTQ                          Critical to Quality CTP                          Critical to Process CpK                          Process Capability Index EMPIS                      Engineering Materials & Process Information Services FMEA                       Failure Modes & Effects Analysis FPQ                          First Piece Qualification GE                             General Electric HPI                            High Precision Industry ITP                            Inspection Test Plan ISO 9001               

  Radiation Protection and Safety measures Radiation Safety Radiation we are discussing here are high frequency electromagnetic radiations. Examples of Electromagnetic radiations are: Light, heat, Radio waves, Infrared, ultraviolet, Xray & Gamma Rays, though light . X ray both are electromagnetic radiations. X ray is considered hazardous, as it is of very high frequency. Radiation workers in India is protected AERB (Atomic Energy Regulatory Board)  The mission of the AERB is to ensure the use of ionizing radiation and nuclear energy in India does not cause undue risk to the health of people and the environment.  Under AERB -RSD (Radiological Safety divisions) governs the safety requirements of radiation workers. Activities of AERB Frames regulations  and   amends  rules Directs BARC(BABA ATOMIC RESEARCH CENTRE)to implement the regulations Publication of codes and standards Nuclear Regulatory Commission (NRC) in US International Commission on Radiological Protection (ICRP) Units of

  Brazing is a process of joining dis-similar metal, where as welding is a process of joining similar metal. In this blog we can see about some of the details in Brazing procedure qualification Brazing involves melting of filler metal and flowing over the joining surfaces. The filler metal used is generally of lower melting point than the base metal. the base metal is just pre heated to make it readily fusible. The filler metals flows in to the gaps of closed fitted base metals by capillary action. The different types of brazing are : Torch Brazing Furnace Brazing Induction Brazing Resistance Brazing Dip Brazing The Brazing Process required a qualified Brazing Procedure (similar to a WPS , Welding Procedure Specification) and a Brazing operator qualification (similar to a welder qualification certificate ) . The gas used for producing the gas flame is generally Acetylene with Oxygen. Brazing Procedure & Approval The standard ASME BPVC , Section IX has qualification variables and ra

 Quality is a characteristic which defines the products degree of serving the purpose and life of the product. Quality is the most essential, among the objectives to be achieved to run a successful company,  it is the most important tool to earn customers faith. Quality Control / Quality Assurance is the department which is responsible for  ensuring that quality products are achieved . Quality control is the act of checking the product against the requirement of design and customer. Quality Assurance is the act of streaming the process towards achieving a quality product in the organization. Quality assurance is considered the most important department in an successful organization. Make sure that the requirements of customers are met and the product is successful, which in turn will benefit the stake holders for a long run. Quality Assurance department achieve the job through a structured quality management system, an example of guidelines to such qualit