| Processing Object: | Metal |
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| Molding Style: | Forging |
| Molding Technics: | Open-Die Forging |
| Application: | Machinery Parts |
| Material: | a 182 F304 |
| Heat Treatment: | Normalizing |
| Samples: |
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| Customization: |
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Tube sheet, English name Tube Sheet or Tube Plate, is to drill a hole slightly larger than the outer diameter of the tube on the circular steel plate. It is a round steel that fixes the tube and seals the medium in the heat exchanger. A fitting that inserts and welds the pipe to fix it. The accuracy of tube sheet processing, especially the tube hole spacing and tube diameter tolerance, verticality, and smoothness greatly affect the assembly and performance of the chemical equipment listed above.
U-shaped expansion joints are commonly used in fixed tube sheet heat exchangers, which have the advantages of compact and simple structure, good compensation, and low price.
With the enlargement of chemical equipment and power stations, the diameter of the tube sheet becomes larger and larger, and the tube sheet with a diameter of 4m-5m is very common. Large-scale tube sheets are characterized by a large number of tube holes, dense, small aperture, deep, and high requirements for precision and finish.
Tube sheets are widely used in tubular heat exchangers, boilers, pressure vessels, steam turbines, large central air conditioners and other industries.
Mainly used in chemical vessels, such as tubular heat exchangers, pressure vessels, boilers, condensers, central air conditioners, evaporators, and seawater desalination, to support and fix the tubular. Rigid and has great thermal conductivity.
According to different environments, different materials are used. Generally, Q345R container plates are used, such as primary and secondary pressure vessels, without corrosive medium circulation, and carbon steel composite plates can be used. When encountering strong acid, high pressure and high temperature, nuclear energy and other environments, corrosion-resistant materials such as stainless steel, 16 manganese, and titanium alloys are required. The application of new synthetic materials brings new vitality to tube sheet products. The main forging materials of Shanxi Donghuang DHDZ company are: carbon steel, stainless steel, alloy steel, duplex stainless steel, etc.~~
The tube sheets used for the third and fourth types of pressure vessels require relatively high precision. The traditional hole processing method is the fitter scribing and the rocker drilling hole. With the large-scale chemical container, the diameter of the tube sheet is also increasing, and the thickness is also gradually thickening. The processing of the tube sheet also introduces numerical control technology, and the numerical control drilling machine is generally used for hole drilling and radial drilling for hole processing. The use of machining centers for high-efficiency and high-precision hole processing has gradually been accepted by some large enterprises. The demand for large and heavy tube sheets in the fields of nuclear power, seawater desalination, and central air-conditioning heat exchangers is showing an increasing trend.
In the inspection process of the tube sheet, the main inspection indicators are the hole position, the hole diameter tolerance, the smoothness in the hole, the presence or absence of burrs, the position of the groove, etc. For the double tube sheet, more attention is paid to the hole position during the inspection process. Hole fit is very important. Generally, it can be guaranteed with a CNC drilling machine. Compared with thick plates, the verticality of holes above 300mm is very important. These thick plates with large diameters require more precise tools and equipment, and the application of special gantry machining centers will become more and more common.
Common materials: Stainless steel: ASTM, A182, F304/304L, F316/316L, F316H, F310, F321, JB4728-2000, OCR18Ni10Ti, JB4728-2000, OCR17NI12Mo2, 2205, 2507, 2103, 904L, 254SMD, 604LN, 314SMD , 1CR13, 2cr13, 3cr13, 4cr13, 321, 302, W1813N, W2014N, W2018N, W2020N, P550, Cr18Mn18N and other forgings. Heat-resistant steel: 12CrlMoVG, P11, P22, P91, P92, F92, InconeI740H, CCA617, Sanicro25 alloy and other forgings Bearing steel: G20CrNiMoA, G2CrNi2MoA, G20Cr2Ni4, GCr15, GCr15SiMn, GCr15SiMo, GCr18Mo, M50, M50NiL, CSS-F42L, Cronidur30 Forgings gear steel: 42CrMo, 20CrNi2Mo, 34CrNi3Mo, 40CrNiMo, 20CrMnMo, 35CrMo, 18CrNiMo7-6 and other forgings.
| Name: | Disc |
| Raw material: | carbon/stainless/alloy steel |
| Min size: | Ø90x20mm |
| Max size: | Ø3500x100mm |
| Min weight: | 0.50kg |
| Max weight: | 10000kg |
| Heat treatment: | Normalize/Quench/tempering |
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