Selection of equipment materials?
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Points to consider when selecting equipment and materials: (as stated in the book) 1: The properties, temperature, and pressure of the medium; 2: The type and structure of the equipment; 3: The requirements of the product; 4: The price and source of the materials; 5: The ease of manufacturing and processing. Personally, I think these are all the most fundamental conditions, and I’m interested in knowing more detailed requirements or conditions as well. This helps to gain a deeper understanding of a range of issues such as process parameters. First, I would like to thank Haiyou for their help. . .
It is recommended to consult HG20581-1998 \"Specifications for the Selection of Materials for Steel Chemical Storage Vessels\".
Materials are generally selected based on past design experience
These days, many media have complex compositions, and a single consideration is certainly not sufficient. Some components may be present in trace amounts, but they can still prove fatal to the entire device. For such devices, we rely mainly on practical experience on site; in other words, it’s all about practice.
This covers such a wide range of topics; generally, there are reference materials that indicate the relevant materials, and one should analyze and understand them by combining those points.
http://61.139.105.132/hgsbjxjc/course/chapters/ch1a.htm I’m not sure if it will be helpful to you.
General principles for selecting materials for chemical engineering equipment: 1. Comply with standards: GB150-1998 \"Steel Pressure Vessels\", \"Regulations for the Safety Inspection of Pressure Vessels\", HGJ15-89 \"Provisions for the Selection of Materials for Steel Chemical Vessels\". 2. When pressure vessels are made of ordinary low-carbon steel, Q235B and Q235C are commonly used. 3. Consider economic factors. 4. Other guiding principles: a) Carbon steel is used for low- and medium-pressure vessels where the medium has weak corrosivity, or for medium-pressure vessels with thin walls； b) Low-alloy steel, used for medium and high-pressure vessels with mild medium corrosion ； c) Stainless steel is used in applications with highly corrosive media ； d) Heat-resistant steels are used in high-temperature environments. e) Austenitic stainless steels cannot be used in environments prone to intergranular corrosion ； 5. The material selection for standard components (such as flanges, manholes, handholes, etc.) complies with **standards or industry standards. 6. Temperature at which the steel can be used. Last edited by 263525689 on 2009-3-11 19:04.]
Well, that’s good. I also need information in this area; further discussion is necessary. Thank you all – after all, the selection of materials is an important part of equipment design!