AWS C3.6M pdf free download

AWS C3.6M pdf free download.Furnace Brazing.
3. Terms and Definitions
AWS A3.OMJA3.O, Standard Welding Terms and Definitions, Including Terns for Adhesive Bonding, Brazing, Soldering. Thermal Cutting, and Thermal Spraying, provides the basis for terminology used herein. however, (he following terms and definitions are included below to accommodate usage specific to this document.
braze joint. The total area, as defined by the engineering drawing. of the laying surfaces to be joined by brazing and the fillets that form at the edges of that area.
braze joint proper. The total area, as defined by the engineering drawing. of the laying surfaces to be joined by brazing. excluding any fillets that form at the edges of that area.
brazing procedure specification (BPS). A document specifying the required brazing variables for a specific application.
brazing symbol. The symbol on the engineering drawing designating the location, class, and configuration of the brazed joint. Such symbols shall be in accordance with AWS A2.4, Standard Symbols for Welding, Brazing, and Nondesiruclue’e Examination.
control sensor. A sensor connected to the furnace temperature controller, which may or may not he recording.
joint dimensions. The joint length is the greater of the two dimensions of the joint parallel to the laying surfaces. The joint width is the lesser of these two dimensions of the joint. The clearance between the faying surfaces is the third dimension to be considered.
lack of bond. A condition in a brazed joint where although brazing filler metal is present between the faying surfaces, the filler metal does not adhere or form a metallurgical bond with the base metal. It most commonly occurs when brazing filler metal is preplaced between contaminated faying surfaces.
load sensors. Sensors that arc attached to or in contact with prxiuction material, a representation of production material, or are buried in the load of production material and which supply temperature data of the production material to process instrumentation.
Organization Having Quality Responsibility. The organization responsible to the end user of the product for the quality of the product and its suitability for the intended use. This organization is usually the manufacturer and marketer of the final product in commercial business and the prime contractor in government procurement. Although such organizations may subcontract brazing and related operations to others, they cannot delegate the ultimate responsibility for the service suitability of the product to these subcontractors.
surface porosity. A roughened or spongy appearance or open pores on the surface of the brazed fillet. Such pores are not sharply linear or crack-like in shape. Surface porosity is confined to the fillet and does not progress into the braze joint proper.
4. Classification of Brazed Joints
4.1 Method of Classification. Furnace brazed joints are classified in this specification based on two criteria: the design requirements and the consequences of their failure. k is the responsibility of the Organization Having Quality Responsibility to evaluate these or other factors and assign the proper classification. This classification controls which inspection methods and limits arc required.
4.2 Class A Joints. Class A is typically chosen for joints subjected to high stresses, cyclic stresses, or both, the failure of which could result in significant risk to persons or property, or significant operational failure.
4.3 Class B Joints. Class B is typically chosen for joints subjected to low or moderate stresses, cyclic stresses, or both. the failure of which could result in significant risk to persons or property, or significant operational failure.
4.4 Class C Joints. Class C is typically chosen for joints subjected to low or moderate stresses, cyclic stresses, or both, the failure of which would have no risk to persons or property.AWS C3.6M pdf download.