Process Characteristics and Applications of Submerged Arc Wear-Resistant Composite Steel Plate

소개

Submerged arc cladding is a widely used method in the production of wear-resistant composite steel plates. 이 프로세스는 여러 가지 장점을 제공합니다., 대형 공작물의 내구성 있는 표면을 만드는 데 이상적입니다..

주요 특징

1. 높은 생산율: Submerged arc cladding uses large currents, typically between 300-500A and sometimes up to 900A. 이는 높은 증착 속도를 가능하게 합니다., increasing production efficiency.
2. Automation and Quality: 프로세스가 고도로 기계화되고 자동화되어 있습니다., resulting in a stable, aesthetically pleasing cladding layer with minimal defects like pores or slag inclusions. The skill level required for operators is relatively low, yet the wear resistance of the produced composite steel plate is excellent.
3. Safety and Cleanliness: Since the arc is fully covered by flux, there is no spatter, reducing the need for cleaning. 추가적으로, 아크 방사선이 없습니다, so operators do not require special protective measures.
4. 장비 제한: The equipment used in this process is large and not easily portable. The flux must be dried and stored properly before use, 현장 클래딩을 어렵게 만드는 것.
5. Heat Management: Submerged arc cladding transmits more heat to the workpiece than other arc welding methods, leading to a higher dilution rate. 일반적으로, 2-3 layers are needed to achieve the desired performance. The high thermal gradient can cause cracking, so preheating and slow cooling are often necessary. 하지만, if the preheating temperature exceeds 315°C, it can make slag removal difficult.
6. Positional Suitability: Due to the large molten pool, this method is best suited for horizontal position surfacing, particularly on cylindrical and large flat workpieces. It is not ideal for small parts.

응용

Submerged arc surfacing is primarily used for iron-based materials. It is commonly applied to:

• Surfacing corrosion-resistant layers on the inner walls of large-diameter containers.
• Adding wear-resistant layers to rolling mill rollers.

This method is also the main technique for manufacturing wear-resistant composite steel plates.

결론

Submerged arc cladding is an efficient and reliable process, especially for large-scale applications requiring wear resistance. Its high production rate, automation, and safety features make it a preferred choice, despite its equipment and heat management challenges.