Product Description
As a key component of the connection and support structure,
screws play a crucial role in ensuring the normal operation and efficient performance of steam turbines. screws are mainly used in high-temperature parts of steam turbines, such as high-temperature blades, high-temperature cylinder bodies, etc., to maintain the stability of key parts of the turbine and ensure the normal operation of the system.
The high-temperature screws used for steam turbines are made of special high-temperature alloy materials, which have excellent high-temperature strength, anti loosening, corrosion resistance, and oxidation resistance.
The commonly used special high-temperature alloys for steam turbines include 15CrMoA, 35CRMOA, 40CrMoV-5, 45Cr1MoV, 0Cr18Ni9, 1Cr11Co3W3NiMoVNbNB, 1Cr18Ni9Ti, 20Cr1Mo1VNbTiB, 20Cr1Mo1VTiB, 25Cr2MoVA, 2Cr11Mo1NiWVNbN, and 2Cr12NiMo1W.
The manufacturing of high-temperature screws requires precise process control to ensure their precise dimensions and meet high quality standards. Quality control is crucial throughout the entire manufacturing process. By using various inspection techniques such as size measurement, metallographic microscopy, ultrasonic testing, etc., ensure that each screw meets the specification requirements.
| Technical Specification of High temperature screws |
| Product size |
Customizable to drawings or samples |
| Optional Materials |
15CrMoA |
| 20Cr1Mo1VNbTiB |
| 25Cr2Mo1VA |
| 25Cr2MoVA |
| 35CrMoVA |
| 40CrNiMoA |
| 45Cr1MoV |
| 2Cr11Mo1NiWVNbN |
| 2Cr12NiMo1W1V |
| 1Cr11Co3W3NiMoVNbNB |
| 1Cr18Ni9Ti |
| Strength |
Above level 12.9 |
| Heat treatment |
According to the drawing requirements |
| Surface treatment |
Nitriding, galvanizing, etc |
| Accuracy |
0.02mm |
| Special processes |
According to the drawing requirements |
| Quality inspection |
Non destructive testing |
Product Features of High-temperature screws
1. It has excellent high-temperature resistance and can work stably for a long time in high-temperature environments.
2. High strength, able to withstand high pressure and high temperature force loads during turbine operation.
3. It has good anti loosening performance and can maintain stable fastening force in vibration environments.
Wide Application of High-temperature screws
High temperature hex nuts are widely used in various key parts of steam turbines, including the following aspects:
1. Used to fix the blades and ensure reliable connection between the blades and the rotor.
2. Used to fix the cylinder head to ensure sealing and structural stability.
3. Used to link the pipelines of various steam turbine systems to ensure the safe operation and sealing performance of the pipeline system.
4. Used for installing accessories such as pumps and valves in the steam turbine to ensure a secure connection with the turbine body.
Detail Photos
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sixth stage moving blade
Special double head studs M30*120 25Cr2MovA
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Faceted hexagon socket bolt in medium pressure partition
SLEEVE
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PERFORATED ADJUSTING SHIM
Packing and Shipping
Standard & solid packaging ensures your goods safety.
Various professional packages at your choice.
Multiple choice of reliable and cost-effective shipping methods available.
Company Profile
Dongfang Yoyik Engineering Co., Ltd is located in Deyang, Sichuan, China's heavy equipment base, was founded in 2004. The company is a professional power plant spare parts manufacturer and supplier. Our products are applicable for many thermal power plants, hydropower plants, metallurgic industrial power plant, cement plant power house, aluminum plant power house, and coal mill power plants.
From advanced precision electric elements and components to highly-customized metal items, you can find all the needed for a power plant from Yoyik.
Yoyik is the
Exclusive Agent of W.M. Nugent CO Inc for selling Nugent filter elements and filtration system products in China. The company also has great advantages in of many hydraulic products, including pumps, valves, sealing materials, etc. the brands include Eaton, Vickers, Moog, star, copaltite, temp-tite, 707, etc.
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FAQ
- ORDER NOTES -
√ Model Selection
Before purchasing, please ensure that the model specifications you provide are complete or that the drawings have been drawn so that you can provide timely and accurate quotations.
√ Quality Assurance
We promise to provide high-quality products and after-sales service. If there are any quality issues, please contact us promptly.
√ Secure Transactions
We sell on MIC, provide a secure and reliable trading environment, and accept multiple payment methods to facilitate your purchase.
- FAQ -
- Are you trading company or manufacturer?
We are factory located in Deyang, China.
- How long is your delivery time?
Generally it is 2-5 days if the goods are in stock. Or it is 7-21 days if the goods are not in stock, it is according to quantity.
- Do you provide samples? Is it free or extra?
Sorry we do not offer samples.
- What price terms do you accept?
Our company can accept all trading manners, eg. EXW, FOB, CIF etc
- What payment terms do you accept?
We accept T/T.
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