Titanium for Pressure Vessels: Properties, Welding and Processing

Titanium for Pressure Vessels: Properties, Welding and Processing

Titanium is a good material for manufacturing pressure vessels. Titanium stands out for its exceptional properties, including a low specific gravity (4.5), remarkable strength, and impressive resistance to extreme temperatures, crack formation, and corrosion, particularly in wet chlorine gas environments. The mechanical attributes and welding characteristics of titanium are intricately tied to its purity, with higher purity levels enhancing overall performance. Conversely, lower purity levels may...

Material Selections for Cryogenic Pressure Vessel Design (Part Three)

Material Selections for Cryogenic Pressure Vessel Design (Part Three)

6. Cold Deformation: Affecting Steel Toughness   Cold deformation adversely affects the toughness of steel, leading to a reduction in low-temperature toughness due to strain aging and an elevation in the brittle transition temperature. Notch toughness becomes paramount for large pressure vessels during utilization, considering potential embrittlement from processes such as cold deformation, cold pressing, and welding deformation. Additionally, the implementation of low-temperature annealing...

Material Selections for Cryogenic Pressure Vessel Design (Part Two)

Material Selections for Cryogenic Pressure Vessel Design (Part Two)

2. Chemical Composition   In the realm of cryogenic pressure vessels, adjusting the carbon content plays a crucial role in influencing material brittleness and the brittle transition temperature of the pressure vessel. To enhance low-temperature steel resilience, it is recommended to keep the carbon content below 0.2%. A contemporary trend favors the utilization of low carbon (< 0.15%) or micro carbon (< 0.06%) steel for improved performance.   Manganese acts as a pivotal element,...

Material Selections for Cryogenic Pressure Vessel Design (Part One)

Material Selections for Cryogenic Pressure Vessel Design (Part One)

The intricate process of designing cryogenic pressure vessels revolves around the meticulous selection of materials, leading to a set of corresponding constraints in the realms of manufacturing and construction. Specifically, the steel designated for the pressure components of cryogenic pressure vessels must meet the criterion of being killed steel. The evaluation of material performance involves considering the allowable stress at normal temperatures, specifically at 20 °C, and adhering to...

Advancements and Challenges in China Pressure Vessel Industry (Part Two)

Advancements and Challenges in China Pressure Vessel Industry (Part Two)

2. Deformation Challenges   Deformation in pressure vessels poses significant threats to their reliability and operational safety. The meticulous formulation and strict adherence to manufacturing processes and standards are paramount to ensuring that the quality of pressure vessels aligns with national regulations and various industry standards. The occurrence of deformation during the manufacturing process can be attributed to errors in the size of the blank, issues in the assembly process,...

Advancements and Challenges in China Pressure Vessel Industry (Part One)

Advancements and Challenges in China Pressure Vessel Industry (Part One)

  With the rapid growth of China's economy and technological advancements, the landscape of pressure vessel manufacturing within the country has undergone significant transformations. From design to manufacturing and maintenance, pressure vessels produced in China have witnessed notable improvements, propelling them to the forefront of global standards. Over the past decade, China has demonstrated a commitment to excellence by establishing and refining a comprehensive set of laws, regulations,...

Pressure Vessel Failure Modes: Design and Risk Insights

Pressure Vessel Failure Modes: Design and Risk Insights

The occurrence of pressure vessel failure signifies a critical state wherein damage has reached a level where the strength, rigidity, or functional capacity of the vessel can no longer meet the stipulated usage requirements. The unraveling of the factors contributing to this failure involves understanding it as a gradual process influenced by external forces, such as mechanical stress, environmental conditions, and thermal effects. The manifestation of damage is characterized by the degradation...

Mastering Stainless Steel Welding Materials for Pressure Vessel

Mastering Stainless Steel Welding Materials for Pressure Vessel

Choosing the right welding materials for stainless steel is a crucial task, with each type – austenitic, ferritic, and martensitic – having its unique considerations. In this exploration, we'll break down the essential principles guiding this selection process. Our goal is to understand how to create welds that not only match but often outperform the base metal in terms of corrosion resistance and mechanical strength. Join us in unraveling the specifics of welding material choices...

Unveiling Categories and Challenges of Stainless Steel for Pressure Vessel

Unveiling Categories and Challenges of Stainless Steel for Pressure Vessel

The term "stainless steel" encompasses a fascinating realm of metallurgy, where the addition of a specific quantity of chromium transforms steel into a passivated state, rendering it impervious to rust. The alchemy of achieving this feat involves ensuring that the chromium content surpasses the pivotal threshold of 12%.   Beyond this foundational chromium infusion, the enhancement of steel passivation often involves a symphony of alloying elements, with nickel and molybdenum taking...