Welding is a production or sculptural process that connects materials, generally metals or thermoplastics, by causing coalescence. This is over and over again done by melting the work pieces and adding up a filler material to shape a pool of molten material that cools to turn out to be a strong joint, with pressure from time to time used in conjunction with heat, or by itself, to produce the weld. This is in contrast with soldering and brazing, which occupy melting a lower-melting-point material in between the work pieces to shape a bond between them, devoid of melting the work pieces.

In a Welding Procedure Specification a lot of different energy sources can be utilized for welding, as well as a gas flame, an electric arc, a laser, friction, an electron beam, and ultrasound. While frequently an industrial process, welding can be performed in a lot of different environments, comprising open air, under water and in outer space. Welding is a potentially dangerous undertaking and precautions are necessary to avoid burns, vision damage, electric shock,  inhalation of poisonous gases and fumes, and exposure to powerful ultraviolet radiation.

These methods use a welding power supply to generate and uphold an electric arc in-between an electrode and the bottom material to melt metals at welding point. They can utilize either direct or alternating current, and unpreserved or non-consumable electrodes. The welding region is from time to time protected by some kind of inert or semi-inert gas, recognized as a shielding gas, and filler material is from time to time used as well.

A pipe is a tubular section or hollow cylinder, habitually but not of necessity of circular cross-section, used mostly to convey substances which can flow liquids and gases (fluids), powders, slurries, masses of small solids. Proper certification is required for welding pipes, i.e., Pipe welder certification.

Welding Consultant NY Metro area is the widespread name for the procedure of joining either thermoplastics or metals. The joining can’t be uneven enough; in its place it should be polished enough to generate attractive metal pieces. Welding activity is performed in a variety of fields like creating metallic furniture, doors, gates, shuttles, windows, bed or even utensils. The very common things you can come across are made with the assistance of welding so; we can pronounce that welding plays an significant part in our everyday life.

The essential cause for the rising demand of welding is the toughness and the power. There are a variety of ways you can weld a definite metal. For example, you can melt any metal and can get weld in the preferred shape. For all this to occur, you can check with the welding consultant. There are many reimbursement concerned in using the metallic things instead of other material as the foundation. This is the cause that a lot of industries are using welding to the major extent and are creating all other large machineries out of this.

Tensile testing also popularly recognized as tension testing is a basic materials science test in which a sample is subjected to uniaxial tension until breakdown. The consequences from the test are normally used to choose a material for quality control, for an application, and to predict how a material will react under other kinds of forces. Properties that are openly measured through a tensile test are final tensile strength, utmost elongation and decrease in area. From these measurements the subsequent properties can also be determined.

The contrast among a defect and the bulk of the sample can be improved for visual examination by the without help eye by means of liquids to penetrate fatigue cracks. One method engages using dyes, fluorescent or non-fluorescing, in fluids for non-magnetic materials, generally metals.

One more usually used method for magnetic materials involves via liquid suspension of fine iron particles used to a part even as it is in an outwardly applied magnetic field. The thermoelectric effect applies thermal properties of an alloy to quickly and with no trouble characterize a lot of alloys, chemical spot test method, or the chemical test or utilizes request of responsive chemicals that can point to the presence of individual alloying elements.

While manufacturing welds are usually used to join two or more metal surfaces because these connections can come across loads and fatigue throughout product lifetime, there is a possibility that they can fail if not created to proper requirement. Like, for example, the bottom metal have to reach a certain temperature throughout the welding process, must cool at a exact rate, and must be welded with well-matched materials or the joint cannot be strong enough to grasp the surfaces together, or cracks possibly will form in the weld causing it to fail.

The characteristic welding defects, lack of fusion of the weld to the bottom metal, cracks or porosity within the weld, and difference in weld density, could reason a structure to break or a pipeline to rupture.

Penetrant Testing is classified into sensitivity levels, visible penetrants are characteristically red in color, and represent the least sensitivity. Fluorescent penetrants hold two or more dyes that fluoresce when excited by ultraviolet (UV-A) radiation (also known as black light). As Fluorescent penetrant inspection is executed in a darkened environment, and the excited dyes emit brilliant yellow-green light that contrasts powerfully against the dark background, this material is more responsive to small defects.

Tasks of CWI

Tasks assigned to certified welding inspectors are –

• Quality assurance in fabrication works of all types;
• Performing in process inspection of metal fabrications; and
• Performing final inspection of the finished fabricated products.

ASME Certification

ASME certification or the certification awarded by the American Society of Mechanical Engineers has major significances such as -

• It is mandatory for specific categories of skilled welding works in all the 50 states in United States;
• ASME certifications are different from all other certifications because it focuses on the manufacture of high pressure components; and
• Is basically important for vehicle and vessel manufacturing industry.

ASME Certification Features

Main features of ASME certification are as follows.

• Complete traceability of all types of raw materials;
• Only certified manufacturers can build vessels; and
• All pressure vessel tests will be witnessed by an ASME third party.

• Complete trace-ability of raw materials,
• All design must meet A.S.M.E. code,
• Only certified manufacturers can build the vessels,
• All pressure vessel tests must be witnessed by an A.S.M.E. third party.

Major benefits of the certification are that it ensures very high quality for the end products and also ensures that only skilled welders perform the task.

Other Tasks of CWI Inspector

A qualified and ASME certified CWI Inspector will have to –

• Conduct quality assurance inspection;
• Ensure that the quality of the welding is commensurate with the American Welding Society (AWS) standards;
• See that the services that are provided by the welder or the welding agency conforms to the requirements of the project for which the tasks are carried out; and
• The inspector will also create detailed inspection report incorporating all the findings.

Eligibility Criteria

A certified CWI Inspector should have multi tasking and team management abilities and should be able to understand complex designs, plans, and specifications. Minimum qualifications required for the job is a high school diploma, vocational training or associate degree, certification as CWI, and above all at least seven to ten years of practical experience in the common welding processes.

Candidates fitting in with the above requirements can look ahead to building up a great rewarding career.

What is NDT Training?

Objective of non-destructive test training is to know and assess the skill levels of the welders in respect of various types of welding works. Numerous types of tests are there and the NDT training is not confined to nondestructive testing alone but also on destructive testing so that the checking of skill levels is flawless.

NYC Welding Certifications

Different classes of New York City welding certifications that are popularly known as NYC welding certifications are there. For instance; a few among the class I licenses are-

• Pipe welding 6G;
• Automatic wire fee; and
• Stainless steel for pre-cast.

These welding works require higher skill levels in comparison to others and that is why the training and testing are also quite stringent.

Recent Changes in NYC

Some changes were made a year ago in the NYC certification systems.

• These changes were in respect of obtaining as well as for renewing the New York City welding licenses;
• Aspirant candidates has to obtain a New York State welding license or a D1.1 AWS welding certification; and
• Then only such candidate will qualify for getting a New York City welding license from the authorities.

Getting the Information

Candidates who aspire to pursue a career of welder in New York City or other parts of the country will have to obtain a license as prescribed under the federal as well as the state laws first. For this they need to complete the NDT training with all the 92 tests and more first of all. Only institutions that are accredited for providing AWS welding certifications can go offer the necessary credentials for facilitating obtaining of such license. Detailed information is available on various educative and informative website and the official websites of the federal and state governments on the training and certifications.

How to Go for the Test

Candidates aspiring to appear the city or the state level tests will have to enroll and register for the examination by paying the required fees. Since the state welding license is the stepping stone for obtaining the New York City welding license, it is important for the candidate to enroll for the same and cross the hurdle first of all.

Welder’s profession is a specialist job and looked upon with respect in United States. Getting the required certification can open up the avenues for a rewarding career.

Testing Performance

Such testing is performed following the procedures as below.

• A magnetic current or some magnetic field is imposed on such parts that is subject of the testing;
• If flux leakages result on the surface and accumulates of sprayed iron powder gives a clear indication of the flaw for the tester; and
• Such testing is an integral part of ASME welder certification process.

Use of MPT

Magnetic particle testing can be performed on multiple materials in a variety of forms.

• MPT can be utilized on any types of ferromagnetic materials;
• Such materials could be in multiple forms like bars, welded form, forged form, extrusions, as fasteners, and even as the engine components; and
• It can conveniently detect any type of discontinuances occurring in the material surface.

Discontinuance Types

Discontinuances in the materials that are detected using the magnetic testing could be any of the following types.

• Inherent discontinuances include pipe, hot tears, cold shuts, porosities, inclusions, as well as the segregation castings;
• Discontinuances occurring in the seams, laminations, cupping, stringers, and arrival of cooling cracks could be there;
• Some of the discontinuances that occur as result of faulty welding are cold and hot cracks, lamellar tearing, lack of fusion and penetration, and various other defects like porosity;
• Undercut and overlaps are a couple of deficiencies in materials that occur due to welding faults;
• Cracks can also develop during machining and heat treating, quenching, plating, and pickling etc; and
• There are also certain in-service discontinuances that are cracks associated with fatigue, stress, creep, corrosion as well as brittleness that arise due to hydrogen reactions.

Detection Range

Detection ranges that are achieved using magnetic particle testing are substantial and it could be up to cracks that could 0.5 mm even. Different standards are used for such testing that includes –

• ASTM E-125;
• ASTM E-709;
• ASTM E-1444; and
• ASTM E-1197.

ASME Certification

Welders getting ASME welder certification have to undertake all types of testing; 92 at the minimum; and that includes the magnetic testing of particles in materials as well.

Fact remains that welding certifications issued by globally recognized authorities like the American Society of Mechanical Engineers gives the welder authorization to manufacture stamped items and the facilities of using any of the ASME codes and certified quality assurance systems. Tests like magnetic particle testing are integral part of the certification.

AWS Certification Features

Main features of the AWS welder certification are as follows.

• It is basically a technical procedure and welder qualification testing;
• Skilled welders are able to produce exactly the results as specified in the codes and procedures;
• Quality welding requires meticulous following of the ingredients, codes, and procedures;
• AWS certification has global recognition and it is achieved going through numerous testing process including the Tensile test; and
• These certificates are given during the pre-employment screening ensuring that the welder has the skills to take up welding works as required by the employer company.

Basic Objective

Basic objective of the certification is to ensure that the welders have skills as specified in the codes under which they are working. Certificates are usually documented and works as a platform for the candidates to try their luck in different jobs.

Certifying Organizations

• Main welding certification issuing organizations in United States are as follows. Among the certifying organizations, AWS or American Welding Society is one of the largest and they deal typically with structural codes that involved building and the bridge constructions.
• American Society of Mechanical Engineers of ASME issues boiler and pressure vessel codes.
• American Petroleum Institute or API is the authority on pipeline welding for gas and oil industries.

Tensile Test

Tensile test that is also known in the welding circles as the tension test is the most fundamental mechanical test that could be performed on any material.  Characteristics of these tests are as follows.

• Tests are simple and inexpensive;
• At the same time, they are also fully standardized;
• Just by pulling on the material, the reaction is assessed to find out the forces applied in tension; and
• It will also tell how much tension is elongated.

Reasons for Tensile Test

These tests determine the relative strength of the materials to counter tension. At the same time the test gives a complete and reliable tensile profile of the material on which the test is conducted.

Since the test of tensile strength is integral to the AWS welder certification for welders, it is essential for any aspirant welder for building up a career in the profession.

WPS Features

Main features of WPS are as follows.

• It is developed for each types of material alloys;
• Welding procedure specification is also used for each type of welding;
• Specific codes are developed for the purpose;
• Engineering societies are the driving force behind its origin;
• WPS would be usually supported by PQR or procedure qualification report; and
• PQR is the derivation of intense testing of documents indicating the understanding and working ability within the specified code.

WPS and PQR Definitions

Multiple codes and standards are there in respect of the welding procedure specification. Accordingly, the definitions also vary widely.

• As per the definition offered by the American Welding Society or AWS, WPs provides detail specifications of the welding variables for different applications and helps proper functioning by trained welder.
• PQR according to them is the record of welding variables that are used to offer standards for welding and results for generating the procedure specifications.
• ASME or the American Society of Mechanical Engineers define WPS as a written direction for welding operators to follow specified codes and PQR is the record of variables obtained at the time of welding tests and includes results as well as the specimens tested.
• According to European Committee for Standardization or CEN the ISO 15607 and 15614 constitute the welding procedure qualifications. PQR for them is the record of all data that is required to constitute a welding procedure specification.

Pipe Welder Certification and WPS

WPS is relevant to all types of welder certification including the pipe welder certification and the certificate holders are considered to be the best equipped to perform all types of complicated welding jobs. In United States, it is the UA or United Association of Plumbers that is responsible for the certification validation. They have put in place a unique code such as the UA-1 through UA-92.

While the common tests would normally count up to 92 for the certification of the pipe welder, the tests could be more in certain cases depending on the situation and skill levels of the candidate.

There are two types of welder certification course; either you have to do a study course with subjects like physics, mathematics, metallurgy, blue print, etc. another option is that you can do course training in controlled machinery in electricity and computing. Students or people wanting to become a qualified welder should undergo proper training.

Some welder qualification process also involves penetrant testing. This kind of testing is also called liquid penetrant.  The primary step is to clean the specific surface with steam, ultra-sonic or solvent cleaners. After cleaning and removing oil or grease, dye penetrant has to be applied on the surface and left for a fixed time period. All excess penetrant have to be removed by skill and technique.

Penetrant testing can detect all the discontinuities that are found in certain welds or surfaces. Most common discontinuities and defects like porosity, cold shuts, cracks and lack of fusion can be detected and repaired by such testing.

This unique welding test has evolved from whiting processes to penetrant checking. But, the principles and the process are similar like in olden days.  Common repair works such as replacements of tubes, boiler pipes, window welds, and gage holes during welding processes involves detecting welding defects. Different kinds of penetrant tests are conducted according to the nature of the defects.

If you aspire to become a professional welder, you should be skilled and hardworking. Nowadays, with advanced equipments and technicalities, welding is not a very difficult skill to practice. New welding machines are powerful and durable. They are small, compact and portable to carry around.

You can find exhaustive data about welder qualification certifications, training centers and skills involved through online resources. Most companies and individuals hire only certified welders who have the tag of being professional. There are welding companies who are on the constant look out for welding professionals with good training in this field. As a professional welder, it is important to carry a work portfolio along with the training certificates. An experienced welder is much in demand, who can display his past work experience and proudly give his success rating in handling tough cases.

If you are currently employed in the welding industry or have decided on welding as a career, gaining welder certification is a key step to help in achieving your long-term goals.  The demand for skilled welders is ever increasing, and becoming a CWI Inspector is one way to ensure your skills will always be relevant.

Benefits of becoming a certified welder:

• Higher Pay – companies pay a premium for highly-skilled employees.
• Better Working Conditions – use your new skills to continuously improve your working environment.
• Health and Safety – paramount in the welding industry.  Reduce accidents and injuries.
• Increased Job Security – in these recessionary times the employees with the highest qualifications have the least likelihood of facing the firing line.
• Learn Latest Techniques – keep your skills up to date by learning how to make the best use of new welding technology.
• More Opportunities – there are far more job openings for certified welders than for uncertified.  Give yourself the competitive advantage over other applicants.

Now you have made the decision to become a CWI Inspector, the next step is to find out more about what the process involves.  There are many different welder certification programs to choose from and research is important to find the right one for you to advance your career.  If you are like most welders and need to juggle training with a full-time job, there are many workplace-based certification programs to choose from.  An alternative to this is night school to gain the qualifications you need.

Certification programs fall into two general categories; niche and broad-based.  If you have the time and money, you may wish to consider a broad-based program which covers many different welding techniques, and involves formal classroom study alongside practical training.  This may not be an option for many full-time employees however.  Also available are niche welding programs designed advance your career in a single aspect of welding.  These cover a single technique enabling you to specialize and hone your skills in a particular area.

Making the decision to become a Certified Welding Inspector is a real investment in yourself and your career, and the benefits will be felt in your wallet and in your job satisfaction for many years to come.