E-mail Us: [email protected]
Dynaflex Boiler Tube Expanders are self-feeding, parallel rolling, three expanding rolls and three flaring rolls. Tools that roll and flare a tube in one operation. This type of expander is particularly suitable for rolling and flaring tubes in drums, super heaters and economiser header having small plug or hand hole openings. Dynaflex Boiler
Flaring tube expansion is a method of tube expansion that expands the end of a tube in a flared shape and is intended for reinforcement with respect to pulling force. This is mainly performed for expansion of tubes for boilers. In this case, the BK type of tube expander is …
Jun 06, 2020 · Boiler Tube Expanders – A Perfect Tool For Expanding And Facing Internal Diameter Of Boiler And Condenser Tubes. Posted on June 6, 2020 by ankitasharma11. boiler tube expander. Condensers, heat exchangers, and boilers or special machinery helps in converting to one state into another for providing heat and cooling effect. These are even used
Oct 07, 2016 · Reason for bank tube Failure. The main reason for bank tube failure is due to inadequate expansion. More than 1000 bank tubes will be there and its difficult to measure the tube thinning for all the tubes after expansion. tube thinning measurement is done randomly for 200 tubes after expanding all the tubes.the requires torque is applied using expander to all the tubes and its taken for
AF-3 Boiler Tube Expander. Available for 7/8" to 4.1/2" O.D. Self Feeding. 3 plain Rolls & flare rolls. Available for tube sheet 1/2" (12.7) to 2.5/8" (66.7) Overlapping flare rolls avoid ridging of tube. Use for parallel flaring expansion of boiler tubes of boiler tube in single operation. X - Denotes roller code for tube sheet thickness
3-Roll Boiler Tube Expander, Parallel Expanding, Single Flair Roll (Series 38) Wilson's Series 38 Expanders are designed for rolling and flaring in a single operation, provide excellent maneuverability, and convert to straight-roll expanders. They are suitable for water tube boilers, fire tube boilers, superheaters and economizers.
Lube-A-Tube is its own indicator serving to show the operator what tubes are still to be expanded, eliminating the possibility of missed tubes. Lube-A-Tube keeps the expanding tool cool and prolongs tool life. Equally effective for rolling condenser tubes, boiler tubes and heavy wall cracking still tubes in refining equipment. For expander
To achieve this you will need to know the tube OD, wall thickness of the tubes and the thickness of the tube sheet within the boiler. principles of tube expanding Tube Expanding is the art of reducing a tube wall by compressing the O.D. of the tube against a fixed container, such as rolling tubes into tube sheets, drums, ferrules or flanges.
Water-tube boilers differ from shell type boilers in that the water is circulated inside the tubes, with the heat source surrounding them. Referring back to the equation for hoop stress (Equation 3.2.1), it is easy to see that because the tube diameter is significantly smaller, much higher pressures can be …
Boiler Tubes, Expanders & Accessories. Tube Expanders Range. The 'E' type expander is a fixed rolling length general purpose tool, which may be power or hand driven. This tool by prior selection can be supplied to provide either parallel or a slightly tapered expansion. In either case the rotation of the tube expander tool will draw it into the
The tube rolling & expanding equipment is compact, powerful and reliable. The pneumatic powered rolling motors range from small 1,000 rpm models, for condenser tubes, up to larger units that produce 600 ft lbs (821.1 Nm) of torque, for high-pressure boiler tubes.
Tube Guides to pilot tubes through tubesheets Tube Insertion Tooling. Tube guides are inserted into the tubes to aid the insertion of the tube into the tubesheets and to pass through baffle sheets if installed. On the aluminum pointed nose a hole is drilled for a cord to be tied to help pull the tube into position.
IB&M's boiler retubing process includes: Inspection - IB&M visually inspects each boiler, and perform NDT testing as needed. We use dye penetrant testing to expose areas of boiler tube sheet cracking. Boiler Tube Extraction - old boiler tubes are removed along with the tube ends. Any minor tube sheet cracks are then repaired to the ASME code specifications.
Feb 10, 2017 · (how many 1000's of lbs would it take to blow a tube that way? in the steel heater the water is around the tubes like a boiler. Theres maybe 150lbs at most of pressure on these tubes, but it would likely take a couple thousand pounds to blow a small 1 1/2" tube apart.
Finned Tubes. While it is not necessary to tell engineers what finned tubes are, or that their use is mandatory in cases of gas-liquid heat exchange where the film coefficient ratio is above 2, it is essential to tell the engineers that FINNED TUBES are backed by not only engineering excellence of manufacture, but also by our zealously guarded reputation for the finest quality of all our products.
Sep 10, 2014 · 3300 Series Fig.11 For use in Fire and Water Tube Boilers, Air Coolers, Heaters and Re-Rolled Flared or Welded Tubes 19 20. Series 3300 Elliott tube expanders are recommended for any requirement for parallel rolling of tubes in tube sheets. These tube expanders have a ball bearing thrust collar which reduces friction to a minimum.
Caustic SCC where tube-to-drum seals leak and concentrate alkaline boiler water chemicals 15 Superheater Highest metal temperatures, but high p O 2 forms surface oxides Tolerable corrosion on CS tubes to 400°C (750°F): Fe 3 O 4
3.0" OD Straight Tube Expanders 10 BWG (0.134") to 13 BWG (0.095") 1.1/2" OD Flaring Expanders 10 BWG (0.134") to 13 BWG (0.095") Dynamic Descaler pump cart with pressure vessel cleaning equipment. We keep a large supply of of tube expanders available for rental. The standard sizes are 1.1/2", 2.0" 2.1/2" and 3.0" OD - 10 to 13 BWG.
Sep 07, 2008 · ASME Sections I, IV and VIII-1 all have brief specifications for tube expanding. Common is the 1/32" clearance between tube OD and tube-hole ID (see HG 360.2). This is the common .031" clearance we see in new construction. Rarely, during a repair do we find this hole size on firetube boilers. TEMA has slightly a different take on the clearance
passes around the tubes. There will be relative expansion between the tubes and the casing. To take care of this a metallic expansion joint is provided as shown in the figure 7. PIPING The expansion movement of piping is the greatest in the boiler. The piping is always between equipment, which are …
stress distribution) that are required to model how new candidate clad tubes will perform in service in a black liquor kraft recovery boiler. Sumitomo supplied two new alloys (HR11N and Super625) to be characterized in the form of 2.5" OD clad tubes and bar stock.
Tube Expanders For General Purpose, Boiler Manufacture and Repair 'E' Type. The 'E' type expander is a fixed rolling length, general purpose tool, which may be power or hand driven. This tool, by prior selection, can be supplied to provide either parallel or a slightly tapered expansion.
Boiler tube expanders, tube tools and Rolling motors
In the majority of cases boiler tubes are expanded, and then bell-mouthed into drums or headers. For large diameter tubes, such as downcomers, grooved seats are used to assist the expansion in forming a tight seal. Where high temperatures are involved, as with superheater tubes, welding may be used in place of expanding. Tubes Attachments
We provide all type of tools such as boiler tube expanders, condenser tube expanders, tube installation tools, tube removal tools, tube pulling machinery, hydraulic tube expansion machines & many more. Its Feature includes Economical Tool used for applications where Tubes are to be Expanded, Best 'Value for Money', Time Tested, Durable Design.
Nov 19, 2015 · This method is extensively used in boilers. • Hydraulic tube expansion: As the name suggests, in this type of expansion, the hydraulic force is used to exert force on the inside of the tube. • Elastic tube expansion system: An axial pressure is applied through the elastic tube. The compressive force will be distributed evenly.
mm) per inch OD of tube. • For tubes in headers for boiler design pressure less than 500 Psi (35 kg/cm2g): Diameter of tube hole minus OD of tube plus 0.015 inch (0.381mm) per inch OD of tube. • For tubes in headers for boiler design pressure over 500 Psi (35 kg/cm2g): Diameter of tube
e = Thickness Factor (0.04 for expanded tubes; 0 = for strength welded tubes); S = Maximum Allowable Stress According to ASME Section II. Example - Boiler Tube: Calculate the minimum required wall thickness of a water tube boiler 2.75 in O.D., strength welded (E, or, e = 0) into place in a boiler. The tube has an average wall temperature of 650°F.
A fire-tube boiler is a type of boiler in which hot gases pass from a fire through one or more tubes running through a sealed container of water. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam.. The fire-tube boiler developed as the third of the four major historical types of boilers: low-pressure tank
boiler tube expanders All Boiler Tube Expanders are available in many of the different series from straight configuration to flared. The majority of common expanders are kept in stock from 1.1/2", 2.0", 2.1/2" and 3.0"OD in stock ready to ship the continent North America usually within 24/48hrs using UPS as our major carrier.
Feb 10, 2004 · Basic Principles of Tube Expanding Tube Expanding is the art of reducing a tube wall by compressing the O.D. of the tube against a fixed container . . . such as rolling tubes into tube sheets, drums, ferrules or flanges. To assure a proper tube joint, the tube wall must be reduced by a predetermined percentage.
By increasing the outside surface area of the tube, the overall heat transfer rate is increased, thereby reducing the total number of tubes required for a given application. This reduces the overall equipment size and the cost of the project. In many cases, one finned tube replaces six or more bare tubes at less than 1/3 the cost and ¼ the volume.
The tubes shall be expanded and flared to an outside diameter of at least 1/8" greater than the diameter of the tube hole or they may be flared, rolled and welded except as provided in pwt 11.2; or rolled and seal welded without flaring provided the throat of the seal weld is not more than 3/8" and tubes are re-expanded after welding.
HELICAL COIL BOILERS. There are specific applications in which helical coil heat exchangers are advantageous over straight tube ones. The foremost of these is for high temperature applications where long straight tubes may pose severe mechanical problems due to thermal expansion, which can be minimized in coiled tubes.
Aug 16, 2013 · 16 Aug 13 10:39. We are fabricating a steam generator for WHB.In client spec for tube expansion, they specified to expand 1/8inch beyond the tubesheet thickness (to the backside of the tubesheet). The tubes are to be strength welded and expanded to 3-8%. We used to expand as per TEMA i.e.tubesheet thickness minus 1/8in.
Figure 2-11.Expanding a tube. steam will be discharged up the stack. For this reason, tubes l-inch-outside diameter (OD) up to and including 2 inches OD are expanded by "boilerman's feet" as only a small amount of expansion is required to hold the tubes firmly in place. With tubes 3 inches OD and larger and all external downcomers, special
and/or Tube End Enhancement Method of Fixing Tubes in Position Method of Removing Weld Droop Setback from Front Tubesheet Face Before Start of Expanding Tube Pitch Maximum Tube to Hole Clearance Before Expanding Minimum Ratio Drilling Pitch/Tube Diameter Minimum % Wall Reduction Maximum Permissible % of Holes that Deviate Minimum Ratio
The Right Angled Rolling Drives are specifically designed for rolling and expanding boiler tubes in mud and steam drums, fire tube and any other boiler where limited access is available. These pneumatic machines will expand up to 4.0" OD tubes and are the ideal machine for using with the Combination Beading Expander.
FLOOR TUBES AND LOWER WATERWALL TUBES (2) 400 600 800 1000 1500 Operating Press, psig 0 1 2 400 450 500 550 600 650 Temperature, F Metal Loss, MM/Y Boilers operating at > about 900 psi produce unacceptably high corrosion rates on CS TO REDUCE CORROSION RATES OF CARBON STEEL TUBES (1) Reduce tube surface temperatures by anchoring an
Tube backspacing in bank may be tangent or spaced Rear wall tubes bent out of plane to form opening for gas to flow through Single-drum boiler Gas flow parallel to boiler bank tubes parallel tubes cause different amounts of expansion . 13 Peripheral Equipment
Sep 29, 2000 · I claim as my invention: 1. An expansion tool assembly for co-operation with a boiler tube end segment during the installation of that boiler tube end segment in a steam boiler drum wall grooved boiler tube end segment bore, and comprising: an actuator subassembly actuated by pressurized primary incompressible fluid, and having an actuator subassembly cylinder, an actuator subassembly piston
KRAIS is the original tube tool company – since the very beginning, we offer a wide range of tube expanders. We manufacture them for many applications including condensers, chillers, heat exchangers, firetube and water-tube boilers, and sugar vacuum pans.KRAIS tube expanders are perfect tools for expanding and installing new tubes and re-rolling leaky and damaged tubes.