[BlindHandyMan] brazing
Hi, does any one know any thing about brazing?? So far I have got some MAP gas for my hand torch it's the same one that I have used for soldering. Also got some brazing rods now what I need to know do you more or less do the brazing the same as soldering??? THANKS ROB from Minnesota [Non-text portions of this message have been removed]
Re: [BlindHandyMan] brazing
e | Spot | Forge | Ultrasonic | Electron beam | Laser beam Equipment: Power supply | Electrode | Filler metal | Shielding gas | Robot | Helmet Related: Heat-affected zone | Weldability | Residual stress | Arc eye | Underwater welding See also: Brazing | Soldering | Metalworking | Fabrication | Casting | Machining | Metallurgy | Jewelry Retrieved from " http://en.wikipedia.org/wiki/Brazing"; Categories: Welding | Soldering Views List of 4 items . Article alt+c . Discussion alt+t . Edit this page alt+e . History alt+h list end Personal tools List of 1 items . Sign in / create account alt+o list end Visit the Main Page [alt-z] alt+z Visit the Main Page [alt-z] alt+z Navigation List of 5 items . Main page alt+z . Contents . Featured content . Current events . Random article alt+x list end interaction List of 7 items . About Wikipedia . Community portal . Recent changes alt+r . File upload wizard . Contact us . Make a donation . Help list end Search alt+f Go Search Toolbox List of 7 items . What links here alt+j . Related changes alt+k . Upload file alt+u . Special pages alt+q . Printable version alt+p . Permanent link . Cite this article list end In other languages List of 6 items . Dansk . Deutsch . Nederlands . Français . Italiano . ??? list end Powered by MediaWiki Wikimedia Foundation List of 5 items . This page was last modified 22:19, 27 June 2007. . All text is available under the terms of the GNU Free Documentation License. (See Copyrights for details.) Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a US-registered 501(c)(3) tax-deductible nonprofit charity. . Privacy policy . About Wikipedia . Disclaimers list end Dale Leavens, Cochrane Ontario Canada [EMAIL PROTECTED] Skype DaleLeavens Come and meet Aurora, Nakita and Nanook at our polar bear habitat. - Original Message - From: Rob Monitor To: blindhandyman@yahoogroups.com Sent: Wednesday, July 04, 2007 4:18 PM Subject: [BlindHandyMan] brazing Hi, does any one know any thing about brazing?? So far I have got some MAP gas for my hand torch it's the same one that I have used for soldering. Also got some brazing rods now what I need to know do you more or less do the brazing the same as soldering??? THANKS ROB from Minnesota [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [BlindHandyMan] brazing
Hi, Well from what I was told from a guy down the road is that the MAP gas burns a lot hotter then the regular propane gas... That's why I was told that I could use my torch... THANKS ROB from Minnesota - Original Message - From: Dale Leavens To: blindhandyman@yahoogroups.com Sent: Wednesday, July 04, 2007 4:21 PM Subject: Re: [BlindHandyMan] brazing Hello Rob, I lifted the below from Wikipedia. My guess is that you won't get anything like enough heat out of a soldering torch to do any significant brazing. I have never attempted brazing myself, I would like to be able to do a little welding, enough to tack angle iron and tubing but so far haven't had any opportunity to learn. Good luck and keep us informed. Hope this helps. Brazing - Wikipedia, the free encyclopedia Your continued donations keep Wikipedia running! Brazing From Wikipedia, the free encyclopedia Jump to: navigation, search This article is about the metal joining process. For the cooking technique, see braising. Brazing is a joining process whereby a non- ferrous filler metal or alloy is heated to melting temperature above 450 °C (842°F), or, by the traditional definition that has been used in the United States, above 800°F (425) °C and distributed between two or more close-fitting parts by capillary action. At its liquid temperature, the molten filler metal and flux interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. With certain metals, such as Nitinol (Nickel Titanium) and Niobium, a low temperature eutectic can form. This leads to the bonding of the two metals at a point that can be substantially lower than their respective melting temperatures. The brazed joint becomes a sandwich of different layers, each metallurgically linked to the adjacent layers. Common brazements are about 1/3 as strong as the materials they join because the metals partially dissolve each other at the interface and usually the grain structure and joint alloy is uncontrolled. To create high-strength brazes, sometimes a brazement can be annealed, or cooled at a controlled rate, so that the joint's grain structure and alloying is controlled. It is also at 1/3 strength because the metal used to braze is usually weaker than the substrate metal because it melts at a lower temperature, ensuring the substrate does not melt. Contents [ hide] List of 8 items (contains 2 nested lists) . 1 Common Techniques List of 4 items nesting level 1 . 1.1 Silver brazing . 1.2 Braze welding . 1.3 Cast iron "welding" . 1.4 Vacuum brazing list end nesting level 1 . 2 Brazing Fundamentals List of 3 items nesting level 1 . 2.1 Flux . 2.2 Brazing strength/Joint geometry . 2.3 Filler materials list end nesting level 1 . 3 Advantages of brazing . 4 Possible problems . 5 Brazing processes . 6 Further reading . 7 See also . 8 External links list end [ edit] Common Techniques [ edit] Silver brazing If silver alloy is used, brazing can be referred to as 'silver brazing'. Colloquially, the inaccurate terms "silver soldering" or "hard soldering" are used, to distinguish from the process of low temperature soldering that is done with solder having a melting point below 450 °C (842 °F), or, as traditionally defined in the United States, having a melting point below 800°F or 425 °C. Silver brazing is similar to soldering but higher temperatures are used and the filler metal has a significantly different composition and higher melting point than solder. Likewise, silver brazing often requires the prior machining of parts to be joined to very close tolerances prior to joining them, to establish a joint gap distance of a few micrometres or mils for proper capillary action during joining of parts, whereas soldering does not require gap distances that are nearly this small for successful joining of parts. Silver brazing works especially well for joining tubular thick-walled metal pipes, provided the proper fit-up is done prior to joining the parts. [ edit] Braze welding In another similar usage, brazing is the use of a bronze or brass filler rod coated with flux together with an oxyacetylene torch, to join pieces of steel. The American Welding Society prefers to use the term Braze Welding for this process, as capillary attraction is not involved, unlike the prior silver brazing example. Braze welding takes place at the melting temperature of the filler (e.g., 870 °C to 980 °C or 1600 °F to 1800 °F for bronze alloys) which is often considerably lower than the melting point of the base material (e.g., 1600 °C (2900 °F) for mild steel). In Braze Welding or Fillet Brazing, a bead of filler material reinfor
Re: [BlindHandyMan] brazing
Hi Rob, It may be but you are going to have to get the steel you are joining up to over 800F all along the seam in order to get the brazing to flow and to get sucked into the joint. That is a load of heat. Still, it may be possible. Thin sheet metal is a likely candidate I would think, what is it you intend to braze? Dale Leavens, Cochrane Ontario Canada [EMAIL PROTECTED] Skype DaleLeavens Come and meet Aurora, Nakita and Nanook at our polar bear habitat. - Original Message - From: Rob Monitor To: blindhandyman@yahoogroups.com Sent: Wednesday, July 04, 2007 5:34 PM Subject: Re: [BlindHandyMan] brazing Hi, Well from what I was told from a guy down the road is that the MAP gas burns a lot hotter then the regular propane gas... That's why I was told that I could use my torch... THANKS ROB from Minnesota - Original Message - From: Dale Leavens To: blindhandyman@yahoogroups.com Sent: Wednesday, July 04, 2007 4:21 PM Subject: Re: [BlindHandyMan] brazing Hello Rob, I lifted the below from Wikipedia. My guess is that you won't get anything like enough heat out of a soldering torch to do any significant brazing. I have never attempted brazing myself, I would like to be able to do a little welding, enough to tack angle iron and tubing but so far haven't had any opportunity to learn. Good luck and keep us informed. Hope this helps. Brazing - Wikipedia, the free encyclopedia Your continued donations keep Wikipedia running! Brazing From Wikipedia, the free encyclopedia Jump to: navigation, search This article is about the metal joining process. For the cooking technique, see braising. Brazing is a joining process whereby a non- ferrous filler metal or alloy is heated to melting temperature above 450 °C (842°F), or, by the traditional definition that has been used in the United States, above 800°F (425) °C and distributed between two or more close-fitting parts by capillary action. At its liquid temperature, the molten filler metal and flux interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. With certain metals, such as Nitinol (Nickel Titanium) and Niobium, a low temperature eutectic can form. This leads to the bonding of the two metals at a point that can be substantially lower than their respective melting temperatures. The brazed joint becomes a sandwich of different layers, each metallurgically linked to the adjacent layers. Common brazements are about 1/3 as strong as the materials they join because the metals partially dissolve each other at the interface and usually the grain structure and joint alloy is uncontrolled. To create high-strength brazes, sometimes a brazement can be annealed, or cooled at a controlled rate, so that the joint's grain structure and alloying is controlled. It is also at 1/3 strength because the metal used to braze is usually weaker than the substrate metal because it melts at a lower temperature, ensuring the substrate does not melt. Contents [ hide] List of 8 items (contains 2 nested lists) . 1 Common Techniques List of 4 items nesting level 1 . 1.1 Silver brazing . 1.2 Braze welding . 1.3 Cast iron "welding" . 1.4 Vacuum brazing list end nesting level 1 . 2 Brazing Fundamentals List of 3 items nesting level 1 . 2.1 Flux . 2.2 Brazing strength/Joint geometry . 2.3 Filler materials list end nesting level 1 . 3 Advantages of brazing . 4 Possible problems . 5 Brazing processes . 6 Further reading . 7 See also . 8 External links list end [ edit] Common Techniques [ edit] Silver brazing If silver alloy is used, brazing can be referred to as 'silver brazing'. Colloquially, the inaccurate terms "silver soldering" or "hard soldering" are used, to distinguish from the process of low temperature soldering that is done with solder having a melting point below 450 °C (842 °F), or, as traditionally defined in the United States, having a melting point below 800°F or 425 °C. Silver brazing is similar to soldering but higher temperatures are used and the filler metal has a significantly different composition and higher melting point than solder. Likewise, silver brazing often requires the prior machining of parts to be joined to very close tolerances prior to joining them, to establish a joint gap distance of a few micrometres or mils for proper capillary action during joining of parts, whereas soldering does not require gap distances that are nearly this small for successful joining of parts. Silver brazing works especially well for joining tubular thick-walled metal pipes, provided the proper fit-up is done prior to joining the parts. [ edit] Braze welding In another similar usage, brazi
Re: [BlindHandyMan] brazing
Hi, What I'm going to be brazing is some plumbing parts to a old oil drum. Hoping that this MAP gas is going to be hot enough. ROB from Minnesota- Original Message - From: Dale Leavens To: blindhandyman@yahoogroups.com Sent: Wednesday, July 04, 2007 4:56 PM Subject: Re: [BlindHandyMan] brazing Hi Rob, It may be but you are going to have to get the steel you are joining up to over 800F all along the seam in order to get the brazing to flow and to get sucked into the joint. That is a load of heat. Still, it may be possible. Thin sheet metal is a likely candidate I would think, what is it you intend to braze? Dale Leavens, Cochrane Ontario Canada [EMAIL PROTECTED] Skype DaleLeavens Come and meet Aurora, Nakita and Nanook at our polar bear habitat. - Original Message - From: Rob Monitor To: blindhandyman@yahoogroups.com Sent: Wednesday, July 04, 2007 5:34 PM Subject: Re: [BlindHandyMan] brazing Hi, Well from what I was told from a guy down the road is that the MAP gas burns a lot hotter then the regular propane gas... That's why I was told that I could use my torch... THANKS ROB from Minnesota - Original Message - From: Dale Leavens To: blindhandyman@yahoogroups.com Sent: Wednesday, July 04, 2007 4:21 PM Subject: Re: [BlindHandyMan] brazing Hello Rob, I lifted the below from Wikipedia. My guess is that you won't get anything like enough heat out of a soldering torch to do any significant brazing. I have never attempted brazing myself, I would like to be able to do a little welding, enough to tack angle iron and tubing but so far haven't had any opportunity to learn. Good luck and keep us informed. Hope this helps. Brazing - Wikipedia, the free encyclopedia Your continued donations keep Wikipedia running! Brazing From Wikipedia, the free encyclopedia Jump to: navigation, search This article is about the metal joining process. For the cooking technique, see braising. Brazing is a joining process whereby a non- ferrous filler metal or alloy is heated to melting temperature above 450 °C (842°F), or, by the traditional definition that has been used in the United States, above 800°F (425) °C and distributed between two or more close-fitting parts by capillary action. At its liquid temperature, the molten filler metal and flux interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. With certain metals, such as Nitinol (Nickel Titanium) and Niobium, a low temperature eutectic can form. This leads to the bonding of the two metals at a point that can be substantially lower than their respective melting temperatures. The brazed joint becomes a sandwich of different layers, each metallurgically linked to the adjacent layers. Common brazements are about 1/3 as strong as the materials they join because the metals partially dissolve each other at the interface and usually the grain structure and joint alloy is uncontrolled. To create high-strength brazes, sometimes a brazement can be annealed, or cooled at a controlled rate, so that the joint's grain structure and alloying is controlled. It is also at 1/3 strength because the metal used to braze is usually weaker than the substrate metal because it melts at a lower temperature, ensuring the substrate does not melt. Contents [ hide] List of 8 items (contains 2 nested lists) . 1 Common Techniques List of 4 items nesting level 1 . 1.1 Silver brazing . 1.2 Braze welding . 1.3 Cast iron "welding" . 1.4 Vacuum brazing list end nesting level 1 . 2 Brazing Fundamentals List of 3 items nesting level 1 . 2.1 Flux . 2.2 Brazing strength/Joint geometry . 2.3 Filler materials list end nesting level 1 . 3 Advantages of brazing . 4 Possible problems . 5 Brazing processes . 6 Further reading . 7 See also . 8 External links list end [ edit] Common Techniques [ edit] Silver brazing If silver alloy is used, brazing can be referred to as 'silver brazing'. Colloquially, the inaccurate terms "silver soldering" or "hard soldering" are used, to distinguish from the process of low temperature soldering that is done with solder having a melting point below 450 °C (842 °F), or, as traditionally defined in the United States, having a melting point below 800°F or 425 °C. Silver brazing is similar to soldering but higher temperatures are used and the filler metal has a significantly different composition and higher melting point than solder. Likewise, silver brazing often requires the prior machining of parts to be joined to very close tolerances prior to joining them, to establish a joint gap distance of a few micrometres or mils for proper capillary action during jo
[BlindHandyMan] Brazing Explained.
Hi Everyone Brazing is a joining process whereby a non- ferrous filler metal or alloy is heated to melting temperature above 450 °C (842°F), or, by the traditional definition that has been used in the United States, above 800°F (425) °C and distributed between two or more close-fitting parts by capillary action. At its liquid temperature, the molten filler metal and flux interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. With certain metals, such as Nitinol (Nickel Titanium) and Niobium, a low temperature eutectic can form. This leads to the bonding of the two metals at a point that can be substantially lower than their respective melting temperatures. The brazed joint becomes a sandwich of different layers, each metallurgically linked to the adjacent layers. Common brazements are about 1/3 as strong as the materials they join because the metals partially dissolve each other at the interface and usually the grain structure and joint alloy is uncontrolled. To create high-strength brazes, sometimes a brazement can be annealed, or cooled at a controlled rate, so that the joint's grain structure and alloying is controlled. It is also at 1/3 strength because the metal used to braze is usually weaker than the substrate metal because it melts at a lower temperature, ensuring the substrate does not melt. Common Techniques Silver brazing If silver alloy is used, brazing can be referred to as 'silver brazing'. Colloquially, the inaccurate terms "silver soldering" or "hard soldering" are used, to distinguish from the process of low temperature soldering that is done with solder having a melting point below 450 °C (842 °F), or, as traditionally defined in the United States, having a melting point below 800°F or 425 °C. Silver brazing is similar to soldering but higher temperatures are used and the filler metal has a significantly different composition and higher melting point than solder. Likewise, silver brazing often requires the prior machining of parts to be joined to very close tolerances prior to joining them, to establish a joint gap distance of a few micrometres or mils for proper capillary action during joining of parts, whereas soldering does not require gap distances that are nearly this small for successful joining of parts. Silver brazing works especially well for joining tubular thick-walled metal pipes, provided the proper fit-up is done prior to joining the parts. Braze welding In another similar usage, brazing is the use of a bronze or brass filler rod coated with flux together with an oxyacetylene torch, to join pieces of steel. The American Welding Society prefers to use the term Braze Welding for this process, as capillary attraction is not involved, unlike the prior silver brazing example. Braze welding takes place at the melting temperature of the filler (e.g., 870 °C to 980 °C or 1600 °F to 1800 °F for bronze alloys) which is often considerably lower than the melting point of the base material (e.g., 1600 °C (2900 °F) for mild steel). In Braze Welding or Fillet Brazing, a bead of filler material reinforces the joint. A braze-welded tee joint is shown here. In Braze Welding or Fillet Brazing, a bead of filler material reinforces the joint. A braze-welded tee joint is shown here. Cast iron "welding" The "welding" of cast iron is usually a brazing operation, with a filler rod made chiefly of nickel being used although true welding with cast iron rods is also available. Vacuum brazing Vacuum brazing is another materials joining technique, one that offers extremely clean, superior, flux-free braze joints while providing high integrity and strength. The process can be expensive because it is performed inside a vacuum chamber vessel; however, the advantages are significant. For example, furnace operating temperatures, when using specialized vacuum vessels, can reach temperatures of 2400 °C. Other high temperature vacuum furnaces are available ranging from 1500 °C and up at a much lesser cost. Temperature uniformity is maintained on the work piece when heating in a vacuum, greatly reducing residual stresses because of slow heating and cooling cycles. This, in turn, can have a significant impact on the thermal and mechanical properties of the material, thus providing unique heat treatment capabilities. One such capability is heat treating or age hardening the work piece while performing a metal-joining process, all in a single furnace thermal cycle. Brazing Fundamentals In order to work properly, parts must be closely fitted and the base metals must be exceptionally clean and free of oxides for achieving the highest strengths for brazed joints. For capillary action to be effective, joint clearances of 50 to 150 µm (0.002 to 0.006 inch) are recommended. In braze-welding, where a thick bead is deposited, tolerances may be relaxed to 0.5 mm (0.020 inch). Cleaning of
Re: [SPAM] [BlindHandyMan] brazing
Rob, now that I know what you are trying to braze. You will need a lot of heat produced for what the steel can will draw away. You will need brazing flux or welding rods with flux already on them to over come the oxidation, and probably a lot larger torch. The flux that I use doesn't flow till about 1200 degrees and the brazing flows at 1400 degrees. There is a very nice brazing made by Harris that contains phosphorous and copper that melts and flows below 800 degrees that does not require flux. Since you are doing copper to steel, a flux that handles that kind of temp would be suggested. It needs to keep the metal clean and not burn and will have a high acid content and will need to be done with plenty of ventilationbob [Non-text portions of this message have been removed]
Re: [BlindHandyMan] Brazing Explained.
HI, Thanks Ray for this good information on brazing... This helps me out a lot. Now maybe I can try some brazing and hope it will work.. THANKS ROB from Minnesota- Original Message - From: Ray Boyce To: blindhandyman@yahoogroups.com Sent: Tuesday, July 10, 2007 5:24 PM Subject: [BlindHandyMan] Brazing Explained. Hi Everyone Brazing is a joining process whereby a non- ferrous filler metal or alloy is heated to melting temperature above 450 °C (842°F), or, by the traditional definition that has been used in the United States, above 800°F (425) °C and distributed between two or more close-fitting parts by capillary action. At its liquid temperature, the molten filler metal and flux interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. With certain metals, such as Nitinol (Nickel Titanium) and Niobium, a low temperature eutectic can form. This leads to the bonding of the two metals at a point that can be substantially lower than their respective melting temperatures. The brazed joint becomes a sandwich of different layers, each metallurgically linked to the adjacent layers. Common brazements are about 1/3 as strong as the materials they join because the metals partially dissolve each other at the interface and usually the grain structure and joint alloy is uncontrolled. To create high-strength brazes, sometimes a brazement can be annealed, or cooled at a controlled rate, so that the joint's grain structure and alloying is controlled. It is also at 1/3 strength because the metal used to braze is usually weaker than the substrate metal because it melts at a lower temperature, ensuring the substrate does not melt. Common Techniques Silver brazing If silver alloy is used, brazing can be referred to as 'silver brazing'. Colloquially, the inaccurate terms "silver soldering" or "hard soldering" are used, to distinguish from the process of low temperature soldering that is done with solder having a melting point below 450 °C (842 °F), or, as traditionally defined in the United States, having a melting point below 800°F or 425 °C. Silver brazing is similar to soldering but higher temperatures are used and the filler metal has a significantly different composition and higher melting point than solder. Likewise, silver brazing often requires the prior machining of parts to be joined to very close tolerances prior to joining them, to establish a joint gap distance of a few micrometres or mils for proper capillary action during joining of parts, whereas soldering does not require gap distances that are nearly this small for successful joining of parts. Silver brazing works especially well for joining tubular thick-walled metal pipes, provided the proper fit-up is done prior to joining the parts. Braze welding In another similar usage, brazing is the use of a bronze or brass filler rod coated with flux together with an oxyacetylene torch, to join pieces of steel. The American Welding Society prefers to use the term Braze Welding for this process, as capillary attraction is not involved, unlike the prior silver brazing example. Braze welding takes place at the melting temperature of the filler (e.g., 870 °C to 980 °C or 1600 °F to 1800 °F for bronze alloys) which is often considerably lower than the melting point of the base material (e.g., 1600 °C (2900 °F) for mild steel). In Braze Welding or Fillet Brazing, a bead of filler material reinforces the joint. A braze-welded tee joint is shown here. In Braze Welding or Fillet Brazing, a bead of filler material reinforces the joint. A braze-welded tee joint is shown here. Cast iron "welding" The "welding" of cast iron is usually a brazing operation, with a filler rod made chiefly of nickel being used although true welding with cast iron rods is also available. Vacuum brazing Vacuum brazing is another materials joining technique, one that offers extremely clean, superior, flux-free braze joints while providing high integrity and strength. The process can be expensive because it is performed inside a vacuum chamber vessel; however, the advantages are significant. For example, furnace operating temperatures, when using specialized vacuum vessels, can reach temperatures of 2400 °C. Other high temperature vacuum furnaces are available ranging from 1500 °C and up at a much lesser cost. Temperature uniformity is maintained on the work piece when heating in a vacuum, greatly reducing residual stresses because of slow heating and cooling cycles. This, in turn, can have a significant impact on the thermal and mechanical properties of the material, thus providing uni
Re: [SPAM] Re: [BlindHandyMan] brazing
You should be able to use the same tip for brazing as soldering if your torch is designed to go that hot. Solder can go from 150 degrees and less to about 450 degrees F. Brazing temps range from 525 or so to 1800 degrees Fahrenheit. ...bob [Non-text portions of this message have been removed]
