Stamping welding elbow, it is the same material with the tube sheet metal stamping die with a half block ring bend, and then the two half ring elbow for welding. Because of various pipe welding standards are different, usually by the group on the fixed semi-finished products of the factory, on-site construction according to the pipe weld level of welding, therefore, also known as the two halves of the welding elbow.Pipe installation of a commonly used in connection with the pipe, connecting the two nominal diameter of the same or different tubes, so that the pipe to make a certain angle turn.
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Advantage
The stamping production efficiency is high, and the operation is convenient, easy to realize mechanization and automation, this is because the stamping die and stamping equipment is to rely on to complete the processing, ordinary press trips as per minute
Up to several tens of times, high-speed pressure to hundreds of times per minute or more, and every time the punch stroke may get a punch.
The stamping generally without cutting scrap generated, material consumption is less, and does not need to other heating equipment, so it is a kind of material saving, energy saving and processing, stamping parts of the cost is low.
The stamping process the size range is larger, more complex shape parts, such as a small clock stopwatch to auto longeron, covering parts, stamping cold material deformation hardening effect and punching strength and stiffness are higher.
The stamping die due to ensure the stamping part dimension and shape precision, and generally does not destroy the stamping parts of the surface quality, and die life is generally longer, so stamping quality stability and interchangeability good, has the characteristic of "identical".
The forming process of stamping elbow is complicated, and it needs to be welded according to different materials and uses, and is gradually formed under certain pressure. Stamping elbow molding need according to a certain process, strictly comply with the corresponding process, otherwise the production of stamping elbow will produce quality problems. According to the need, a circular ring shell can be cut into 90 6 degree elbow or 60 elbow or other specifications of the elbow, the process is applied to the
Any specification of large scale, with the diameter of the elbow and the diameter of the elbow is larger than that of the 1.5D, is an ideal method for the manufacture of large push bends.
This process molding method used in the production of different bends, in different areas to show good use value, so that the process in the production of different bends with good value reflected.
The advantages of the forming process of large stamping elbow are mainly shown in the following aspects:
Stamping elbow
One need not tube for raw materials, save the tube making equipment and the mold expense and can get arbitrary large diameter and wall thickness relatively thin push of elbow. The raw material of the punching elbow is special, and the raw material of the pipe blank is not needed to be added.
The stamping elbow blank is flat or developable surface, and thus a simple material, to ensure accuracy. Assembly welding is convenient, in the processing of easy control of raw materials, simple operation, no complicated process and welding and assembly is convenient.
Because of the above two reasons, can shorten the manufacturing cycle and the production cost is greatly reduced. Because no special equipment is needed, especially suitable for the field processing of large stamping elbow.
Material
Stamping elbow material is carbon steel, stainless steel, alloy steel and other materials. Carbon steel stamping elbow is cheap, the use of large. The alloy steel elbow is used in a special position on the.
Stainless steel stamping elbow is different from carbon steel elbow is the main material of different materials, the chemical composition will keep the elbow for a long time will not rust, is not easy to be corroded.
Stainless steel, stainless steel, corrosion resistance as the main characteristics, and the chromium content of at least 10.5%, the maximum carbon content of not more than 1.2% of the steel.
Carbon steel: A234 WPB ASTM/ASME, WPC
Alloy: A234 WP 1-WP 12-WP ASTM/ASME 11-WP 22-WP 5-WP 91-WP911 15Mo3, 15CrMoV, 35CrMoV
Stainless steel: A403 WP 304-304L-304H-304LN-304N ASTM/ASME
A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME
A403 WP 321-321H ASTM/ASME A403 WP 347-347H ASTM/ASME
Low temperature steel: A402 WPL3-WPL ASTM/ASME 6
High performance steel: A860 WPHY 42-46-52-60-65-70 ASTM/ASME
Cast steel, alloy steel, stainless steel, copper, Aluminum Alloy, plastics, PVC, argon Ge Lek, PPR, RFPP (reinforced polypropylene) etc..
Stamping elbow thickness standard
After the arrival of the scene of the stamping elbow, the thickness of the stamping elbow while improving the process, the average thickness of the thick wall of the stamping elbow to seriously exceed the standard, need to be calculated according to the actual measurement.
In the process of calculation conducted among, wall thickness of the general accounting process, general pipeline equipment, general interface thrust and the thrust is qualified of, of course, docking pipeline whether or not to set up a reasonable. For pipeline calculation of punching elbow should stress strengthen coefficient and flexible coefficient, of course, re accounting check when, the consistency of calculating stress strengthen coefficient of pipe wall thickness, this by the weight of the elbow were reduced wall thickness is stamping elbow along the center line were carried out straight, ensure stamping elbow straight weight and stamping elbow weight, stamping elbow for stamping elbow weight conversion of wall thickness.
Pressed Bend Bend Tube Without Flanges,Bend Fitting With Flanges,Bend Pipe Without Flanges,Pressed Bend With Flanges Unisite Group Ltd. , https://www.shipsparts.nl
Diaphragm valve and bellows valve in aseptic process equipment
Aseptic production process, the most commonly used cut-off valve is a diaphragm valve, usually referred to as the diaphragm valve. The reason why the diaphragm valve in the aseptic production process, first, because of its simple structure, and second, its low price, which makes it so far almost no "competitors." The only valve that can compete with a diaphragm valve is the so-called bellows globe valve, the so-called bellows valve. Due to its high price, this bellows globe valve, despite its superior technical advantages over diaphragm valves, remains difficult to contend with diaphragm valves as described herein. PTFE Bellows "The competition between bellows and diaphragm valves in the aseptic process industry has a long history. For a long time, the diaphragm valve with its simple structure, low cost and convenient cleaning and disinfection and occupy an advantage. Compared with the diaphragm valve, bellows valve in the market variety of specifications too little. Today, Tuchenhagen Vesta corrugated pipe valve is to fill this gap, the paper compares the diaphragm valve with bellows, the advantages and disadvantages of both valves more clearly. Emptying Performance When diaphragm valves are to be used in horizontal pipelines, it must be ensured that a diaphragm valve is installed in a horizontal pipe in accordance with the diaphragm valve manufacturer's instructions. Otherwise, the diaphragm valve will experience some problems during the operation of the process equipment and can not be completely Vent the body of media. However, different types of diaphragm valves, diaphragm valves manufactured by different manufacturers, different nominal flow rate of the diaphragm valve installation angle is different, and often to the design and manufacture of aseptic flow of process equipment has brought great trouble. In the T-type diaphragm valve, the problem of this empty body is more obvious. Vesta bellows valves do not suffer from this problem when compared to diaphragm valves. No matter what the body structure of the Vesta bellows valve, there is no "dead corner" during the no-load operation of the process equipment to ensure tightness To cut off the pipe. Moreover, it can be installed in a variety of installation methods in aseptic process piping systems. In the medical manufacturing industry, aseptic processing equipment consists of many horizontal and vertical pipes. In the design of pharmaceutical equipment, such bellows valves must be installed and used in specific locations due to pipe location and technical reasons. For example, if a diaphragm valve is installed in a vertical pipe, it must be connected by a 90 ° elbow in the same horizontal plane. The T-type structure of the diaphragm valve production costs and high, compared with the diaphragm structure of different Valve Body shape, the bellows valve in size and shape, with the pipe connection and installation more advantages. As the two types of globe valve structure of different types, therefore, in the initial design of aseptic flow process equipment, should choose the various parts should choose which type of globe valve. The output devices in the fields of medicine, food and biotechnology have a large number of valves that need to be sterilized. Large valves, such as the Stericom series, have little if any of these sterilization needs. Because, in these process equipment, the amount of media required to transport less and less, with less flow, almost indiscriminate selection of the diaphragm valve. The new bellows valve has a smaller volume, with different pipe diameter with, in this regard more advantages than the diaphragm valve. Equipment utilization comparison As a user of the equipment, use the equipment as much as possible throughout the life cycle of the equipment, meaning that equipment utilization should be as high as possible. The equipment maintenance means that the equipment must stop production, but also put some equipment maintenance costs. Bellows valves are generally worn; in the diaphragm valve, valve wear, after a certain period of time must be replaced diaphragm, diaphragm life depends on the length of the corresponding production process. On the one hand, the process equipment flow medium corrosion, pipe cleaning and disinfection temperature, process equipment working pressure and flow and other operating parameters will affect the life of the diaphragm; the other hand, the diaphragm-type valve on and off diaphragm deformation It is also an important factor that determines the diaphragm's service life. Vesta Bellows Shut-Off Valves with Pneumatic Actuators Most diaphragm valves are damaged not for use during production but rather for mechanical crushing. Although diaphragm diaphragms have different degrees of resilience, different coatings, and different PTFE shields, there is external invisible wear to all diaphragm valves (surface erosion and particle adhesion caused by internal media) . Therefore, in order to avoid the production of aseptic process being forced to stop due to the damage of the diaphragm valve, in practice, it is common practice to change the diaphragm before the specified service life. As a result, both the number of diaphragms forced to be replaced, resulting in maintenance costs, or equipment downtime is significantly greater than the PTFE bellows valve, and another advantage of the bellows valve: almost used for Process of production process. Core Components The key component of the Vesta bellows valve is the cut-off bellows made of TFM1705 PTFE. In addition to being resistant to corrosion by various chemical media, the TFM1705 material also meets FDA Code of Federal Regulations, §177.1550, "Perfluorocarbons Resin "requirements. Its smooth surface (Ra ≤ 0.8mm), reliable sealing, large switching distance and other characteristics of these characteristics, for the best CIP / SIP disinfection and cleaning are very beneficial. For more than three years, this patented bellows valve has succeeded in gaining a foothold in the market and is able to strictly isolate the inside of the pipe from the atmospheric environment outside the pipe in aseptic pipe.