Posted by: poolmand - 08-27-2023, 08:42 AM - Forum: AWS
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AWS C3.4M/C3.4-2016: Specification for Torch Brazing
| Size: 4.34 MB| Format:PDF| Quality:Scanner| Publisher: American Welding Society, Inc. (AWS) | Year: 4th Edition, 2016| pages: 30
AWS C3.4M/C3.4, 4th Edition, 2016 - Specification for Torch Brazing
This specification presents the minimum fabrication and quality requirements for the torch brazing of materials such as steels, stainless steels, copper, copper alloys, and heat- and corrosion-resistant alloys as well as other materials that can be adequately torch brazed. Note that the torch brazing of aluminum alloys is addressed in AWS C3.7M/C3.7, Specification for Aluminum Brazing.
The purpose of this specification is to standardize torch brazing process requirements and brazed joint quality requirements for all applications requiring brazed joints of assured quality. This document establishes minimum requirements for processes and products with a minimum of explanatory information so that sources of ambiguity are minimized. It assigns responsibility for the ultimate quality of the brazed product to a single organization and permits that organization to modify requirements if appropriate to the application. It requires proper documentation of any such modifications.
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Posted by: poolmand - 08-27-2023, 08:40 AM - Forum: AWS
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AWS C3.3-2008 (R2016): Recommended Practices for the Design, Manufacture, and Examination of Critical Brazed Components
| Size: 6.05 MB| Format:PDF| Quality:Scanner| Publisher: American Welding Society, Inc. (AWS) | Year: 3rd Edition, 2008 (2016)| pages: 58
AWS C3.3, 3rd Edition, 2008 - Recommended Practices for the Design, Manufacture, and Examination of Critical Brazed Components
These recommended practices encompass those procedures that should be followed in the design, manufacture, and examination of brazed joints for critical components in order to assure their reliability in service.
The procedures recommended represent the best current practice and are necessary to the control of brazed joint quality. These practices are applicable to all products and brazing processes. Whenever any or some of these practices are omitted when producing critical components, the omission should be the result of a rational decision, not the result of a lack of knowledge of the best practice.
This document is divided into clauses addressing materials, design, manufacturing, and examination. These clauses are followed by Annex A, which presents a list of informative references; Annex B, which presents sample specifications that are intended as guides for the preparation of the user’s documents; Annex C, which presents a discussion of brazing risk management; Annex D, which presents a table relating to the quantification of the scope and magnitude of braze-induced discontinuities; Annex E, which presents systematic criteria for design of brazed components; and Annex F, which presents guidelines for the requesting of an official interpretation of an AWS standard.
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Posted by: poolmand - 08-27-2023, 08:34 AM - Forum: AWS
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AWS C3.2M/C3.2-2019: Standard Method for Evaluating the Strength of Brazed Joints
| Size: 6.29 MB| Format:PDF| Quality:Scanner| Publisher: American Welding Society, Inc. (AWS) | Year: 5th Edition, 2019| pages: 48
WS C3.2M/C3.2, 5th Edition, 2019 - Standard Method for Evaluating the Strength of Brazed Joints
The purpose of this standard is to describe the test methods used to obtain reliable data on the strength of metallic-to-metallic, metallic-to-nonmetallic, and nonmetallic-to-nonmetallic brazed joints. Test specimens preparation and testing is described to provide consistent and proper fabrication, brazing practices, and test results. Interpretation of the test results is the responsibility of the user.
Documentation of the materials, brazing parameters, and test conditions are required to allow comparison of results with the joint strengths obtained by others using this standard method. General use of this standard method may permit a compilation of brazed joint strengths and brazing design criteria at some future time.
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Posted by: poolmand - 08-27-2023, 06:55 AM - Forum: AWS
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AWS C2.25/C2.25M-2012(R2018): Specification for Thermal Spray Feedstock - Wire and Rods
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AWS C2.25/C2.25M, 2nd Edition, 2012 - Specification for Thermal Spray Feedstock - Wire and Rods
This specification prescribes requirements for the classification of thermal spray feedstock based on the as manufactured chemical composition. Thermal Spray Feedstock includes solid and composite wires and ceramic rods for thermal spraying. Requirements for standard sizes, marking, manufacturing, and packaging are included.
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Posted by: poolmand - 08-27-2023, 06:53 AM - Forum: AWS
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AWS C2.23M/C2.23-2018: Specification for the Application of Thermal Spray Coatings (Metallizing) of Aluminum, Zinc, and Their Alloys and Composites for the Corrosion Protection of Steel
| Size: 4.21 MB| Format:PDF| Quality:Scanner| Publisher: American Welding Society, Inc. (AWS) | Year: 2nd Edition, 2018| pages: 31
AWS C2.23M/C2.23, 2nd Edition, 2018 - Specification for the Application of Thermal Spray Coatings (Metallizing) of Aluminum, Zinc, and Their Alloys and Composites for the Corrosion Protection of Steel
Included are requirements for surface preparation, coating application, repair of coating defects, measurement of coating thickness, adhesion testing of the applied coating, and application of sealers and topcoats over the thermally sprayed metal coating. Not included in this standard are requirements for design and fabrication, thermal spray equipment qualification, coating selection, and operator and inspector certification. For successful thermal spray application, the steel structure and components should be designed and fabricated in accordance with NACE SP0178.1 Additional consideration should be given to weldments and components, or structures with thermal cut edges, whose hardness may preclude adequate profile depth.
(1) American National Standards Institute (ANSI), 1819 L Street NW, Suite 600, Washington, DC, 20036.
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This standard describes the essential elements of a procedure to verify performance of equipment and systems used for thermal spraying. These equipment and systems include the thermal spray gun, gas console, control apparatus, and feedstock supply system. Other external systems and apparatus such as a gas or fuel management system, sound abatement, dust collection, automation, fire suppression, and finishing systems are beyond the scope of this document.
This specification does not address all of the thermal spray process variations or equipment configurations. However, the principles presented may be a starting point for establishing a customized verification procedure.
It is not the intent of this standard to address process validation; to ensure a process is producing, or capable of producing, desired coatings. This specification does not address all of the essential process variables necessary for thermal spray process qualification. This specification does not address equipment design standards, provisions, requirements, codes, or regulations that may apply to the thermal spray equipment or its installation.
The standard can be applied at the time of installation and any other times or intervals the User deems appropriate to ensure the equipment is capable of operating to the manufacturer’s specifications or other specifications deemed applicable by the User.
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Posted by: poolmand - 08-27-2023, 06:28 AM - Forum: AWS
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AWS C2.20/C2.20M-2016: Specificatiopn for Thermal Spraying Zinc Anodes on Steel Reinforced Concrete
| Size: 6.66 MB| Format:PDF| Quality:Scanner| Publisher: American Welding Society, Inc. (AWS) | Year: 2nd Edition, 2016| pages: 48
AWS C2.20/C2.20M, 2nd Edition, 2016 - Specificatiopn for Thermal Spraying Zinc Anodes on Steel Reinforced Concrete
This standard covers the application of zinc thermal spray coatings to steel reinforced concrete using arc and flame spray equipment. The application of the zinc on steel reinforced concrete requires an electrical connection to the steel reinforcement. Although other metals can also be applied with these methods and equipment, at this time the standard only covers zinc and zinc alloys. This standard is formatted as an industrial process instruction: job description, safety, Pass/Fail Job Reference Standard, feedstock materials, equipment, a step-by-step process instruction for surface preparation, thermal spraying, quality control (QC), and a Job Control Record.
This standard is based on the literature, equipment, process developments, and industrial practices known at the time of publication. This standard does not cover the design standards or recommended practices for cathodic protection (CP) systems. The design of a CP system for reinforced concrete structures, including the connection of the zinc coating to the steel reinforcement, should be undertaken by an experienced and qualified Corrosion Engineer. Table 1 summarizes inspection, test methods, and acceptance criteria that shall be employed.
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AWS C2.19/C2.19M, 1st Edition, 2013 - Specification for the Application of Thermal Spray Coatings to Machine Elements for OEM and Repair
This specification covers thermal spray processes for original equipment manufacturers (OEMs) and the repair of machinery components. The scope includes (1) recommended applications, (2) management and engineering requirements, (3) equipment and facility requirements, (4) feedstock materials, and (5) application processes for thermal spray coatings.
The thermal spray processes covered by this standard are combustion and high velocity oxygen fuel powder, electric arc, and plasma processes that use either powder or wire as feedstock.
Development of this standard was initiated at the request of the U.S. Navy to replace MIL-STD-1687A (SH), Thermal Spray Processes for Naval Ship Machinery Applications. It contains Annex B that the Navy may still use as their guide for surface ship applications. Annex B also lists Navy applications that are permitted and those that are prohibited, including the certification, approval requirements and protocols for handling U.S. Navy components.
Others may use this standard and annexes as a guide to establishing contract document requirements between equipment owners (purchaser) and thermal spray coating contractors where they may choose to invoke all or only a portion of this specification's requirements as fits the needs of their work.
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AWS C2.18-1993 (R2001): Guide for the Protection of Steel with Thermal Sprayed Coatings of Aluminum and Zinc and their Alloys and Composites
| Size: 7.36 MB| Format:PDF| Quality:Scanner| Publisher: American Welding Society, Inc. (AWS) | Year: 1993 (R2001)| pages: 43
AWS C2.18, 1993 Edition, 1993 - Guide for the Protection of Steel with Thermal Sprayed Coatings of Aluminum and Zinc and their Alloys and Composites
This guide covers the application of thermal spray coatings (TSC) for the protection of steel with aluminum, zinc and their alloys, mixtures, and composites. This scope of this guide includes the major elements of an industrial process instruction covering job description, safety, consumable materials, surface-preparation and thermal spray equipment, quality control (QC) equipment, TSC operator training and qualification, a step-by-step surface preparation and thermal spraying application method with quality control checkpoints, maintenance and repair of thermal spray coatings, and a job control record. Nominal TSC feedstock spray rates and coverage information for a common planning base are presented for purchasers and contractors. A TSC selection guide for various service environments and the operator qualification requirements are presented in appendices. This guide is modelled on the thermal spray method of MIL-STD- 2138A(SH),Metal Sprayed Coating Systems for Corrosion Protection Aboard Naval Ships.1
1. Military specifications are available from Standardization Order Desk, 700 Robbins Avenue, Building #4, Section D, Philadelphia, PA 19111-5094.
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This guide contains recommendations for establishing, conducting, and maintaining a thermal spray operator qualification program. Such programs generally include training, knowledge and skill testing, and documentation requirements. The skill tests described in this guide relate to flame spraying, arc spraying, atmospheric plasma spraying, and high velocity oxygen fuel (HVOF) spraying.
While this guide does not preclude the possibility to establish a qualification program for operators of automatic thermal spray equipment, the examples in this guide assume the objective is to qualify operators who develop process parameters, apply the thermal spray process, and evaluate the effectiveness of the coating process.
This document is not to be used as a stand-alone document for operator qualification or certification. An operator would not be “qualified in accordance with AWS C2.16/C2.16M” as this document does not address relevant acceptance standards. However, a qualification program can state that it follows the guidelines of AWS C2.16/C2.16M.
Although this guide is not written with mandatory requirements, mandatory language, such as the use of “shall,” will be found in those portions of the document where failure to follow the instructions or procedures could produce inferior, misleading, or unsafe results.
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