The orbiweld s series from orbitalum convinces by its extremely narrow design and high durability by its efficient integrated liquid cooling system. It is an easy means of attaching various tubes to gether common to the hvac field. Welders shall only work within the limit of their qualification range. Welding supervisorwelders shall ensure that welding procedure specification wps selection is taken from the approved matrix for each specific line classapplication accompanying each wps. This numbering system will be used on all welding procedure specifications revised or. It is solely intended to provide basic information about weld conditions, weld gauges, symbols and weld terms. Orbital welding is the technology to weld the pipes or tubes. Pipe welding we use cookies to help our website work more effectively and efficiently, and to. Because orbital welding involves extreme heat conditions, a coolant system may be required to avoid damaging the welding equipment.
Since the introduction of automatic orbital welding in pipeline application in 1961, significant improvements have been obtained in orbital pipe welding systems. The tig process can be either a fusion autogenous process in which the. Prior to beginning a project, variables such as arc length, welding current, speed, parent material, shielding gas, filler if required, and inert shielding gas must all be considered. The widest range of orbital welding equipment in the world the model 9 series of orbital weld heads are designed for fusion tig welding of tube, pipe, fittings or other cylindrical components. It is very difficult to achieve the highest standards of quality and safety using manual welding. Arc machines has recognized this need and has several solutions. The learning process is fairly short compared to manual tig welding, which can take years to master.
Please find herewith the attached file of wpsorbital for your reference. Refer to local procedures for technical or other specific data. Easier to handle, more economical, more effective enclosed tig orbital welding heads with outstanding characteristics. Todays orbital welding systems offer computer controls that store a variety of welding parameters that can be called up as needed. Welding the root pass before beginning to weld the pipe, the procedure should be checked to assure that the correct electrode is being used. This includes the diameter and the classification of the electrode. Orbital welding operators received training from the manufacturer of the orbital welding equipment. Compact orbital weld heads can be clamped in place between rows of heatexchanger tubing. Unless specifically required otherwise by the welding variables qw250, a qualification in any position qualifies the procedure for all positions. Wear safety glasses clamp your work piece to a workbench or in a vise hold onto the file s handle with your dominant hand and hold onto the end of the file with your other hand apply moderate downward force and push the file forward on the workpiece.
A fire watch must be maintained at least 30 minutes after the hot work is completed. The highpressure systems of a single aircraft can contain more than 1,500 welded joints, all automatically created with orbital equipment. Orbitalum tools develops and produces portable tube saws, tube facing machines, pipe end preparation machines, computer controlled orbital welding power sources as well as closed and open weld heads. Orbital welding of corrosion resistant materials ssw 2008. This document is not an application manual and does not contain a complete statement of all factors pertaining to those topics. Dec, 2019 welding cannot take its proper place as an engineering tool unless means are provided for conveying the information from the designer to the workmen.
There were sixteen variables for the qualification of welding procedure. The orbital welding process was invented by rodrick rohrberg of north american aviation to address fuel and hydraulic fluids leaking in. Although there are limited orbital applications for socket or fillet welds, they do exist. Tig with or without filler wire portable power source for. Tig with or without filler wire portable power source. Welding procedure specification wps may be generated by an authorized person i. Welders visual inspection handbook may 20 note this handbook is not intended to serve as a work procedure or to replace any existing procedures. Automatic orbital welding, no filler metal, my question is if i qualify a weld on two inch tubing with. Capturing the heritage and credibility of the model 207. Enclosed orbital weld heads costeffective clamping inserts.
Open type carriage welding head for welding of tube and pipe joints polycar 602 p6 300 a, all applications programming by pc or touch screen, with arc voltage control avc and torch oscillation control osc, threephase power supply thanks to the automatic welding process we have the guarantee that our welding procedure. Compact design without any protrusions that would be disturbing in practice. Orbital welding demo with arc machines ami 415 orbital power source with open. The power source and controller are the primary equipment used in the orbital welding process. The acquisition of real time data simply means capturing and storing the output values of the welding parameters while the weld is in progress. Our 49,000 square foot welding facility features complete welding training and qualification capability. Engineering directorate structural engineering division march 2016 national aeronautics and. I have read section ix and see that size is not an essential variable. Orbitalum tools is your competent partner for orbital pipe cutting and beveling as well as for orbital welding for industrial piping systems, prefabrication and maintenance. Orbital welding systemquick reference guide 7 series 20 swagelok stainless steel thin collets for use with the series 20 weld head and. Tig, which can take years to master lightweight, portable take to the jobsite remote control options available powerful tool in the hands of an experienced weld. Orbital welding solves the problem of joining tubing and circular components in sensitive industries such as aerospace and pharmaceuticals. Successful orbital welding is also dependent upon using high quality tubing material.
Typically only 316l stainless steel tubing not pipe and fittings are used for automatic orbital gta welding and are obtained from a number of specialty manufacturers. In 1941, subcommittee ix was formed as a joint committee of aws and asme personnel. Pipe welding we use cookies to help our website work more effectively and efficiently, and to align our services and advertisements to your needs. The term flight hardware refers to any hardware acceptable for space flight use class. The widest range of orbital welding equipment in the world. The welding procedure approval record wpar is a record of this weld. The purpose of the welding handbook for maritime welders is to provide guidance in modern welding and related processes and to provide the welder with a source of practical information on the right solution to specific onboard welding problems. Orbital welding is a mechanised version of the tungsten inert gas arc welding. Available in eight sizes and three versions, they accommodate diameters from 332 2,3 mm to. Sample welding procedure specifications are available on our website. Volume 2 of the american welding societys welding handbook, 8th edition, presents in1.
The base metal shall conform to the specifications of steel groups 1, 2, 3 as per table 11. Topic welding industry technical discussions pqrwps orbital automatic welding by thesavvy1 date 04052009 16. Technical procedure flaring a tube 101406 benjamin leisso flaring part that spreads a tube is an important skill that all hvac heating, venting and air conditioning people must know how to do. Weldability of tantalum alloys american welding society. The orbital welding process was invented by rodrick rohrberg of north american aviation to address fuel and hydraulic fluids leaking in and around the plumbing of the x15 rocket research plane. Experience gained from user contact and welding training of crewmembers showed that. Orbital welding equipment today is capable of acquiring real time data output and exporting it to a computer where it can be formatted for verification and analysis. Orbital gta welding with the addition of wire is a viable option. Orbital welding is a specialized area of welding whereby the arc is rotated mechanically. Installation of pharmaceutical process piping a case study. Orbital welding systemquick reference guide 7 series 20 swagelok stainless steel thin collets for use with the series 20 weld head and fixtures are specially designed for use with thin side plates and are easily changed for varying outside diameters.
Tig orbital welding is a semiautomatic welding method where the. Orbital welding equipment used in the fabrication of chemical. Orbital welding is commonly used to join tubing in piping systems for wfi, clean steam, and product lines. Please read this document carefully in conjunction with the. Boilertube installation and repair offer perfect applications for orbital welding. Orbital welding produces repeatable, reliable and higher purity welds, with more control throughout the welding process.
Housed in the weld head, an electrode rotates in a fixed orbit around the weld joint, ensuring proper joining of components. Method statement welding of piping and structural components. The discussion is divided into sections on 1 weld ing, 2 mechanical testing, and 3 other procedures, including heat treatment, oxidationresistant coat ing, chemical analyses, and metal lography. We ensure that a world is worth living in by producing secure pipe connections. It is designed to work with all amis orbital fusion weld heads and is capable of welding tube and thin wall pipe.
In applications such as semiconductor or pharmaceutical tube welding, orbital welding is the only means to achieve the required level of weld quality and consistency. Orbital welding uses the gas tungsten arc welding gtaw process as the source of the elec tric arc that melts the base mate rial and forms the weld. Advantages of orbital welding for the welder repeatable, reliable, higher purity welds are assured more control throughout weld process short learning process vs. Standard range 4 160 a steps of 1 a high precision range 4 50 a steps of 110 a key protected user interface nonvolatile welding procedure library for all types of welding joints paperless transfer and storage of welding procedures via builtin chip card manager.
Orbital welding systems and accessories for highpurity process piping. Unique in the entire world, hx orbital weld heads are the best solution for efficient, highquality production thanks to their automated welding technology. In case of pipelines this technology is used at a large scale as the pipeline having number of pipes joined together. The main components of every orbital welding system are the power supply with integrated computer control, the welding head and, where required, a wire. Lightweight, compact inverter power source for the tig manual or orbital welding. At the time of the preparation of this chapter, the referenced codes and other standards were valid. Welding symbols provide the means of placing complete welding information on drawings. This article discusses the history and need for orbital welding, the equipment used and process of orbital welding, and then looks at. Request pdf using onsite orbital welding for power plant construction gemma power systems introduced the process of automated orbital welding of. Orbital welding of pipe on applications requiring the addition of filler to the weld can be done using equipment with wire feed capabilities in sizes from 12 inch nps and up. This procedure will describe the process for visual and dimensional inspection of welds. These pipelines may have chances of leakages at the. Using onsite orbital welding for power plant construction. Suggested field welding procedure gtaw for coiled tubing grades hs70, hs80, hs90, hs110 contact.
Orbital field welding of clean steam line to supply panel with a weld head. Jun 06, 2016 how to write a welding procedure specification iso 156141 one of the most important documents in regards to welding is the wps welding procedure specification and many people working with wps look at them like they are just an issue, or something that only the engineers and quality control technicians have to worry about, but is it a hard thing to create andor look at. For some socket or fillet welds, the torch on the standard model 15 and model 81 pipe weld heads can be tilted 15 to 20 degrees and the weld performed. For further information on the categorization of the welding, joining, cutting, and allied processes, see appendix a. Welding cutting operations shall be performed by trained, certified workers. This intelligent power supply connects the orbital welding process with stateof. Welding procedure specification wps written document that provides direction to the welder for making production welds in accordance with code requirements rules for qualification of procedures vary by referencing code qualified by testing asme, aws prequalified aws standard welding procedure specification aws. Orbital welding 101 with orbital welding, the process is highly controlled, ensuring that operators can consistently produce highquality welds. The nature of the gtaw process creates some potential hazards. We can quickly and easily match qualified welders to the special needs of any job.
Whether your project requires tig manual gtaw, fusion orbital welding automatic gtaw, wire feed orbital semiautomatic gtaw, stick smaw, or mig welding gmaw, we are the experts in precision welding solutions. This presentation will discuss the asme bpe standard, and the techniques, tube end preparation, equipment considerations and operator training requirements for orbital welding of corrosion resistant materials for the above mentioned industries. Certification is kept current at all times through our computerized library of welding procedure specifications wps and personnel qualification records pqr. Welding the majority of the welding in the program was done with the gas tung stenarc process gta. Weldingcutting operations shall be performed by trained, certified workers.
They must be able to set up the equipment and write weld programmes or schedules for tubing or pipe sizes up to 6 in. Model 217 wdr new product orbital welding arc machines. It allows welding of joints that manual welders are. The scheme for the symbolic representation of welds on engineering drawings used in this manual is consistent. Once a weld procedure has been selected, an orbital. By considering manual metal arc welding process, electric arc welding is based on providing an electric circuit comprising the electric current source the feed and. Depending on the pipe size, a half round file can be used to remove any burrs created when the land is ground on to the end of the pipe. However, in the field where less sophisticated equipment is available, such tubing may be considered heavygauge and a multiple pass, v groove procedure would be used. Control kit for closed welding heads fitted with tachometer or welding heads other than polysoude manual tack welding kit including watercooled tig torch extension cable 15 m for welding heads kit for backing gas dual welding head switch box welding method tig dc with or without filler wire input power autorange. The weld quality dependends upon having a reasonably clean source of argon for backing and shielding gas. A halfround file can be used to file the insides of holes and inner radii. Orbital welding and orbital weld preparation by orbitalum. The welding process and electrodes must be suitable for all positions permitted by the wps asme section ix, qw203.
Socket or fillet welding orbital welding pipe welding. Other applications include boiler tubing and tube and pipe fittings, valves, and regulators. The model 217 wdr is a 100150a programmable gtaw power supply. The structure of the 1941 edition of section ix was similar to the current edition. Installation of pharmaceutical process piping a case study part 2 orbital welding, weld inspection, weld documentation, passivation by barbara k. Improve your understanding of advanced and complex welding processes. Other groups may be welded providing welding procedure data sheets are accepted by the canadian welding bureau. Suggested field welding procedure gtaw for coiled tubing. Wps for orbital welding for tubes weld showing 12 of 2 messages. Requirement of more productive welding systems for pipeline application forces manufacturers to innovate new advanced systems and welding processes for orbital welding method. But being as some of the requirements on the sample aws document do not completely pertain to orbital welding apps. The manufacturer initially drafts a preliminary welding procedure pwps which is used by one of the manufacturers competent welders to prove that it is capable of producing a welded joint to the specified levels of weld quality and mechanical properties. Welding stainlesssteel pipes economically and with high quality using the tig welding procedure.
The new ncpwb welding procedure specification numbering system clearly defines the type of metals to be welded, the welding process used and allows for identification of variations in a process. Use of lanl welding procedures and welder qualifications for nonlanl work shall be at the sole risk and responsibility of the subcontractor, and the subcontractor shall indemnify and save l anl and the government harmless from any and all claims, demands, actions or causes of action, and for any. Welding operator is wearing gloves in compliance with. If anybody had sample wps for welding tubes with applied orbital welding please share with me i need as references to create wps.
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