Product Description
In the manufacturing and maintenance process of steam turbines, positioning screws are fasteners used to ensure the correct position and accuracy of each component. 35CRMO steel is an alloy structural steel with good mechanical properties and wear resistance, suitable for components that withstand high loads and temperatures.
In a steam turbine, positioning screws are usually used to secure the impeller, baffle, and other key components to maintain their correct position and clearance, ensuring the normal operation and efficiency of the turbine.
When machining positioning screws according to the drawings, it is necessary to accurately control the size, shape, and position of the screws to ensure the accuracy of fit with other components of the steam turbine. The processing involves processes such as heat treatment and surface treatment to improve the mechanical properties and service life of screws. In addition, due to the special working environment of the steam turbine, the positioning screws may require special anti-corrosion treatment to adapt to high temperature, high pressure, and corrosive media environments.
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.
| Technical Specification of High temperature set 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 set 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.
Detail Photos
Related Products
Yoyik offers different types of spare parts for steam turbine and generators:
Steam turbine generator sealing strip Q8A372.2970
HEXAGON HEAD SCREW OPEN TOP END CYLINDER
Concave washer
HIGH TEMP. STUD
LP cylinder cooling water nozzle
BEARING BODY
IP combined valve (left&Right
Oil resistant rubber plate gasket Ф230*Ф200*0.8
HIGH TEMPERATURE SPLINED NUT
Sealing ring gasket
SCREW
packing sheet
Seals and Pistons
MS CONTROL VALVE COVER ASSY
Special Washer
Rectangular spring sheet
OIL PIPE
GLAND SEAL RING-1
Steam Strainer
BLOCK
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.
- OUR ADVANTAGE -
- TECHNICAL PATENTS -
- COOPERATIVE INDUSTRIES -
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.
Audited Supplier 
){kind=link}
){kind=link}