M10*20 35CrMoA Slotted countersunk head screw Hex Socket Screw for steam turbine

 

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.

 

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

 

Related Products

Yoyik offers different types of spare parts for steam turbine and generators:

High temperature double head bolt 2"-8UN L=266 45Cr1MoV
DIAPHRAGM SEALING PRESS PLATE
SHAFT SLEEVE
Special high-temperature slotted nut M30 25Cr2MoVA
IP MSV ACTUATOR
Toothed oil retaining ring
Gland seal
Filling pad
HP casing inlet pipe toothed gasket
Turbine LP -Blade for stage no-4 (LH side)
Pre-inlet Valve
GLAND SEAL RING-2
screw M76*4 35CrMoVA
High and medium pressure cylinder gasket 45*35*3 1Cr18Ni9Ti
MSV valve disc
RING PACKING STEAM I/L
INTERNALS OF TURBINE MANUAL TRIP DEVICE
RSV valve disc
Oil resistant rubber plate gasket φ140*φ60*0.8
Second diaphragm seal
High temperature slotted nut 4"-8UN 45Cr1MoV
Carbon brush D172 25*32*64
Bearing accessories
REVERSE THRUST BEARING BLOCK




 

Packing and Shipping

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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. 

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- 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.

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Sorry we do not offer samples.

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Our company can accept all trading manners, eg. EXW, FOB, CIF etc

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We accept T/T.