Browse Topic: Brazing

Items (340)
This specification covers a gold-palladium-nickel alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, chips, preforms, and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers an aluminum alloy in the form of clad sheet from 0.006 to 0.249 inches (0.15 to 6.32 mm), inclusive, in thickness (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers a copper alloy in the form of wire, rod, sheet, strip, foil, and powder and a viscous mixture (paste) of powder in a suitable binder (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet 0.010 to 0.249 inch (0.25 to 6.32 mm), inclusive, in nominal thickness, clad on two sides (see 8.5
AMS D Nonferrous Alloys Committee
This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
With the introduction of CAFÉ norms (Corporate Average Fuel Economy or Efficiency) in automobile industries, gasoline engines must improve their fuel economy by reducing overall CO2 footprints. To fulfil this demand many OEMs have adopted the use of exhaust gas circulation coolers (EGR) Most of the gasoline engines are having exhaust gas temperatures ranging from 650-850°C, these gases could also be highly corrosive in nature. It’s very important to select the right grade of stainless steel which should have high corrosion resistance and oxidation properties. It should also withstand high temperatures and should have low sensitization at high temperatures. Most of grades stainless steel offers high resistance against corrosion, high temperature properties. But good sensitization at high temperature is not always associated with all grades of steel. To compare corrosion resistivity, PREN number (Pitting Resistance Equivalent Number) plays important role. Highest the PREN number highest
Damle, PankajChawda, Tejesh
This specification covers requirements for producing brazed joints in parts fabricated from corrosion- and heat-resistant steels, carbon or low-alloy steels, or copper alloys, and the properties of such joints
AMS B Finishes Processes and Fluids Committee
This specification covers the engineering requirements for producing brazed joints in parts fabricated from steels, iron alloys, nickel alloys, cobalt alloys, and copper alloys by use of silver alloys, and the properties of such joints
AMS B Finishes Processes and Fluids Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips, and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
The rapid evolution of electric vehicles (EVs) has considerably forced the automotive industry to design compact and highly efficient heat exchangers due to low-temperature applications. The plate type heat exchanger (Also known as “Chiller” in automotive industry) is one of the most important components in EVs thermal management systems. It is a type of heat exchanger, which uses metallic plates arranged like a staggered sandwiched structure and brazed together to exchange heat between two working fluids. The heat transfer between the plates occurs due to highly compact structural design as compare to any conventional heat exchangers. The chiller is having very large surface area, which is exposed to the working fluids as the distribution happens all across the plates. The chillers are more suitable design for transferring heat between ranges of working fluids pressure varying from low to high. Various types of welded, semi-welded plate heat exchangers are available in the market
Suman, SaurabhKushwah, Yogendra SinghShukla, AnkitSingh, Shobhit Kumar
Open Circuit Potential (OCP) is the potential established between the working electrode (the metallic surface to be studied) and the environment, with respect to a reference electrode, which will be placed in the electrolyte close to the working electrode. It is very important to measure the electric potentials of various metallic materials in order to know their corrosion behavior in various environments. But perhaps if there is brazing joint involved, as in the case of aluminium heat exchanger components, there are some challenges involved in knowing the potential of the fillet part which includes the selective masking of the areas within the same sample for testing. Firstly, getting reliable & accurate data due to masking process is one concern. Secondly, about the aluminium heat exchanger sample, the variation in OCP values within a single sample are possible due to various factors i.e. presence of cladding on the surface of the materials, presence of sacrificial Zn coating on the
Shandily, Prem MohanGuruprasanna, PraveenKumar, RajSoni, Sunil
During the conventional brazing process of aluminium heat exchanger component (HEX), the temperature measurement of component in brazing furnace is a general requirement in order to control & achieve the required brazing temperature (around 590°C - 610°C) to ensure efficient brazing joints of the aluminium products. The temperature measurement & monitoring during brazing is usually done with the help of temperature sensors alongwith the data logging system, in fact this is currently a widely used method. However, there are many drawbacks in this type of method for which a suitable solution needs to be developed. In this study, a possible development of simulation tool on the basis of data from Al-Si phase diagram & Lever rule, predicting the temperature on the component during brazing using this tool & comparing w.r.t actual measured data are discussed in detail. As a part of further validation, the data from both the data-logger as well as the estimated temperature from the simulation
Singh, Satyendra PratapGuruprasanna, PraveenKumar, RajSoni, Sunil
During thermal performance testing, achieving thermal balance between two fluid mediums of any heat exchanger is critical. Heat balance ratio (HBR) measures the heat transfer imbalance between two sides (source and sink) in a heat exchanger and also helps in ensuring accuracy of test data. There could be many factors which may lead to the imbalance in thermal performance of the sample under testing e.g. sensors accuracy, test operating range, sample orientation, hysteresis in the data acquisition systems etc. Therefore, a testing procedure needs to be established to achieve a better heat balance ratio as low as less than ±5%, which accounts for errors during instrumentation processes, flow losses & manual errors during testing. The current experimental study focuses on a typical coolant aluminium brazed heater core product which is used in automotive applications for passenger cabin heating during the cold climate conditions, windshield demisting and defrosting. In this study, three
Baro, NathuramGautam, PiyushKumar, AshwaniGuruprasanna, PraveenSoni, SunilKUMAR, Amit
The SAE J526 Standard covers electric-resistance welded single-wall low-carbon steel pressure tubing intended for general automotive, refrigeration, hydraulic, and other similar applications requiring tubing of a quality suitable for bending, flaring, beading, forming, and brazing. Material produced to this specification is not intended to be used for single flare applications due to the potential leak path that would be caused by the ID weld bead or scarfed region. Assumption of risks when using this material for single flare applications shall be defined by agreement between the producer and tube purchaser. The material produced to this specification is intended to service pressure applications where severe forming and bending is not required. As this material may exhibit mechanical properties that reduce some desired forming characteristics versus SAE J356, the severity of the forming requirements of the finished assembly should be considered when utilizing material produced to this
Metallic Tubing Committee
This specification covers the requirements for producing brazed joints on aluminum and aluminum alloys by torch or furnace brazing
AMS B Finishes Processes and Fluids Committee
This recommended practice covers design requirements for silver, copper and nickel brazed joints, primarily for tube connections, for aerospace propulsion systems. The environmental conditions stated herein, and those given in the applicable AMS specifications, provide the limitations of this ARP
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
This specification covers the requirements for producing brazed joints of aluminum and aluminum alloys by immersion in a molten flux bath
AMS B Finishes Processes and Fluids Committee
In recent years, there has been a rapid growing demand for laser brazing in the transportation industry for automotive-Body in White (BIW), steel sheet assembly. Implementation of laser brazing is aimed primarily to improve productivity, quality of joints and cost. Laser brazing works by filling the opening amongst two substrates by melting the filler wire with the help of laser beam (used as a heat source), whereas in conventional resistance spot welding, contacting metal surface points are joined by the heat obtained from resistance to electric current. BIW is essentially a welded metal structure which is meant to provide durability and crashworthiness to the vehicle and is conventionally assembled using resistance spot welding process. The BIW structure comprises of various steel grades having varying thicknesses, compositions, microstructures and mechanical properties. Laser brazing, as a joining method was introduced as an alternative to resistance spot welding for assembling
Kumar, AnimeshHatwalne, MrunalPonkshe, ShripadrajMisal, Swapnali
Arc brazing welding (ABW) is widely used in automotive vehicle body and chassis structure along with Arc welding - MIG (Metal Inert Gas) or TIG (Tungsten Inert Gas) and spot welds. MIG welding or ABW (Arc Brazing welding) fracture in vehicle development process is one of the critical phenomena in quasi static structural simulation, like Roof Strength, Seat/Belt Anchorage and Child Restraint Anchorage (CRS). MIG/ABW Fracture has an impact on structural performance. Advantages of ABW over MIG weld is made at relatively lower temperatures. Significant advantage is welding thin sheet metal, no melting of parent metal and retains significant physical properties. This characteristic of ABW enables selection of ABW against MIG welded joint on automotive thin sheet metals. Good ABW joint can be as strong or stronger than MIG welded joint. Joint efficiency (JE) is defined as the ratio between the fracture strength of the joint and the fracture strength of parent metal. A joint efficiency of 100
Lee, HwawonPolice, Parvath
This SAE Standard covers normalized electric-resistance welded flash-controlled single-wall, low-carbon steel pressure tubing intended for use as pressure lines and in other applications requiring tubing of a quality suitable for bending, double flaring, beading, forming, and brazing. Material produced to this specification is not intended to be used for single flare applications, due to the potential leak path caused by the Inside Diameter (ID) weld bead or scarfed region. Assumption of risks when using this material for single flare applications shall be defined by agreement between the producer and purchaser. This specification also covers SAE J356 Type-A tubing. The mechanical properties and performance requirements of SAE J356 and SAE J356 Type-A are the same. The SAE J356 or SAE J356 Type-A designation define unique manufacturing differences between coiled and straight material. Nominal reference working pressures for this tubing are listed in ISO 10763 for metric tubing, and SAE
Metallic Tubing Committee
As environmental problems such as global warming are emerging, regulations on automobile exhaust gas are strengthened and various exhaust gas reduction technologies are being developed in various countries in order to satisfy exhaust emission regulations. Exhaust gas recirculation (EGR) technology is a very effective way to reduce nitrogen oxides (NOx) at high combustion temperatures by using EGR coolers to lower the combustion temperature. This EGR cooler has been mass-produced in stainless steel, but it is expensive and heavy. Recently, high efficiency and compactness are required for the EGR cooler to meet the new emission regulation. If aluminum material is applied to the EGR cooler, heat transfer efficiency and light weight can be improved due to high heat transfer coefficient of aluminum compared to conventional stainless steel, but durability is insufficient. Therefore, the aluminum EGR cooler has been developed to enhance performance and durability. Test results showed that the
Lee, Dong YoungHa, Seok
This specification covers the requirements for producing brazed joints on aluminum and aluminum alloys by torch or furnace brazing
AMS B Finishes Processes and Fluids Committee
This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers sub-critically annealed or normalized electric resistance welded and cold-drawn single-wall high strength steel tubing intended for use in hydraulic pressure lines and in other applications requiring tubing of a quality suitable for bending, flaring, cold forming, welding and brazing. Nominal reference working pressures for this tubing are listed in ISO 10763 for metric tubing and SAE J1065 for inch tubing. This specification also covers SAE J2614 Type-A tubing. The mechanical properties and performance requirements of standard SAE J2614 and SAE J2614 Type-A are the same. The designated differences of Type-A tubing do not imply that Type-A tubing is in anyway inferior to standard SAE J2614. The Type-A designation is meant to address unique manufacturing differences between sub-critically annealed and normalized tubing. Tube assembly configurations made to specific geometry and components requiring thermal attachment methods in association with the sub
Metallic Tubing Committee
This SAE Standard covers brazed double wall low-carbon steel tubing intended for general automotive, refrigeration, hydraulic, and other similar applications requiring tubing of a suitable quality for bending, flaring, beading, forming, and brazing
Metallic Tubing Committee
This SAE Standard covers sub-critically annealed or normalized electric resistance welded flash controlled single-wall high strength steel tubing intended for use in hydraulic pressure lines and in other applications requiring tubing of a quality suitable for bending, double flaring, cold forming, welding and brazing. Material produced to this specification is not intended to be used for single flare applications due to the potential leak path caused by the ID weld bead. Nominal reference working pressures for this tubing are listed in ISO 10763 for metric tubing and SAE J1065 for inch tubing. This specification also covers SAE J2613 Type-A tubing. The mechanical properties and performance requirements of standard SAE J2613 and SAE J2613 Type-A are the same. The designated differences of Type-A tubing do not imply that Type-A tubing is in anyway inferior to standard SAE J2613. The Type-A disignation is meant to address the unique manufacturing differences between sub-critically
Metallic Tubing Committee
In order to research the effect of process parameters (laser power, welding speed, wire-feed speed, spot diameter) on mechanical properties of Zn-coated Steel Laser Brazing Lap Joint for vehicle, the influence of welding parameters on energy input of brazing seam cross section was theoretically analyzed, and then a great number of laser brazing experiments of 0.7mm galvanized steel was carried out. After that, the tensile strength and micro-hardness tests were also done for well-formed joints of galvanized steel formed in the laser brazing. The results show that joints with good mechanical properties and surface morphology can be formed when laser power is in the range of 2500-3200W and the other parameters keep in a specified range. Joint performance significantly reduces when the value of wire-feed speed exceeds 3.0m/min for that a wider brazing seam cross section can’t be formed. And tensile strength of the joint drops steeply when welding speed exceeds 50mm/s, because the solid
Liu, H.J.Zhang, X.D.
This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
Engine air induction systems hydrocarbon trap (HC trap) designs to limit evaporative fuel emissions, have evolved over time. This paper discusses a range of HC traps that have evolved in engine air induction systems. (AIS) The early zeolite flow through HC trap utilized an exhaust catalyst technology internal stainless steel furnace brazed substrate coated with zeolite media. This HC trap was installed in the AIS clean air tube. This design was heavy, complicated, and expensive but met the urgency of the implementation of the new evaporative emissions regulation. The latest Ford Motor Company HC trap is a simple plastic tray containing activated carbon with breathable non-woven polyester cover. This design has been made common across multiple vehicle lines with planned production annual volume in the millions. The cost of the latest HC trap bypass design is approximately 5% of the original stainless steel zeolite flow through HC trap. There have been a variety of HC trap designs
Moyer, DavidKhami, RogerBellis, AndrewLuley, Thomas
This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder
AMS F Corrosion and Heat Resistant Alloys Committee
The SAE J526 Standard covers electric-resistance welded single-wall low-carbon steel pressure tubing intended for general automotive, refrigeration, hydraulic, and other similar applications requiring tubing of a quality suitable for bending, flaring, beading, forming, and brazing. Material produced to this specification is not intended to be used for single flare applications due to the potential leak path that would be caused by the ID weld bead or scarfed region. Assumption of risks when using this material for single flare applications shall be defined by agreement between the producer and tube purchaser. The material produced to this specification is intended to service pressure applications where severe forming and bending is not required. As this material may exhibit mechanical properties that reduce some desired forming characteristics versus SAE J356, the severity of the forming requirements of the finished assembly should be considered when utilizing material produced to this
Metallic Tubing Committee
This SAE Standard covers normalized electric-resistance welded, cold-drawn, single-wall, low-carbon steel pressure tubing intended for use as pressure lines and in other applications requiring tubing of a quality suitable for bending, flaring, forming, and brazing. In an effort to standardize within a global marketplace and ensuring that companies can remain competitive in an international market it is the intent to convert to metric tube sizes which will: Lead to one global system Guide users to preferred system Reduce complexity Eliminate inventory duplications
Metallic Tubing Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips, and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
The SAE Standard covers normalized electric-resistance welded flash-controlled single-wall, low-carbon steel pressure tubing intended for use as pressure lines and in other applications requiring tubing of a quality suitable for bending, double flaring, beading, forming, and brazing. Material produced to this specification is not intended to be used for single flare applications due to the potential leak path that would be caused by the ID weld bead or scarfed region. Assumption of risks when using this material for single flare applications to be defined by agreement between the producer and tube purchaser. This specification also covers SAE J356 Type-A tubing. The mechanical properties and performance requirements of standard SAE J356 and SAE J356 Type-A are the same. Therefore, the designated differences of Type-A tubing are not meant to imply that Type-A tubing is in anyway inferior to standard SAE J356. The Type-A designation is only meant to address the unique manufacturing
Metallic Tubing Committee
This SAE Standard covers brazed double wall low-carbon steel tubing intended for general automotive, refrigeration, hydraulic, and other similar applications requiring tubing of a suitable quality for bending, flaring, beading, forming, and brazing
Metallic Tubing Committee
To assess the ability of a material to create filler metal flow and fill the brazing joint areas during the brazing process, we adapted a method which is called aluminum Flow Factor test. The target is to take benefit of this test in order to reach an optimum level of heat exchanger performance from project development steps. This paper studies similar aluminum clad material compositions coming from different suppliers. After brazing process, significant differences were noticed in the filler metal flow results. This study highlighted the impact of brazing peak temperature to create more or less flow of filler metal. The Flow Factor is promoted by the increase of brazing peak temperature. It also showed that regardless the material gage, at a low peak temperature of 591°C, Flow Factor are quite similar around 0,18. Even if the silicon particle size was not especially studied, compared to others papers, this study didn't show a main impact on Flow Factor results compared to other
Pasquet, LaurentBergès, DamienDA SILVA, PhilippeDemarcq, Claire
As greater emphasis is placed on the development of small fuel-efficient cars, there is a growing need to reduce the size of the inverter used in hybrid vehicles (HVs). However, semiconductor devices and other components are generating larger amounts of heat and the parts used to cool these components are becoming thinner. One issue resulting from these trends is perforations that propagate from coolant paths. This development secured corrosion resistance by controlling sacrificial corrosion protection performance, optimizing the use of Mn and Si materials to reduce susceptibility to grain-boundary corrosion, and taking a microstructural approach to the flow of the brazing filler metal. The developed material was applied to the inverter cooler of a small HV released at the end of 2011
Ohno, KazutakaTomita, YoshikiYagi, EisukeNakano, Hirofumi
This recommended practice covers design requirements for silver, copper and nickel brazed joints, primarily for tube connections, for aerospace propulsion systems. The environmental conditions stated herein, and those given in the applicable AMS specifications, provide the limitations of this ARP
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
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