Questions and analyses of pressure vessel manufacture (part one)
As the economy and technology level of China has grown rapidly, from design to manufacturing and maintenance, pressure vessels made in China have been improved and even stepped into the frontier of the world. In recent ten years, China had established and refined related laws, regulations and standard systems of pressure vessels, standardizing the equipment from end to end. And in order to achieve the national sustainable development strategy, China has started to advocate and implement the eco-friendly design of pressure vessels, and gradually formed a modern pressure vessel manufacturing model. Although China has realized the independent development of pressure vessels in terms of materials, design and manufacturing, there are still some problems and challenges in these three aspects.
Pressure Vessel Manufacturing Features
A pressure vessel is a kind of special equipment used in petrochemical industry, agriculture, national defense, and other fields. It can be divided into four categories: storage tanks, reaction vessels, heat exchangers and separators. Since most of the pressure vessels are used in harsh environments such as high temperature and high pressure conditions, the safety of the pressure vessel must be ensured and the material requirements for the manufacture of pressure vessels are very strict. In actual operation, the manufacture techniques of pressure vessels are very difficult and complicated, and it requires the cooperation of various professions. For pressure vessel designers, in addition to the expertise of pressure vessels, they also need to have the expertise of the industry they are in, and strictly design pressure vessels in accordance with standards and specifications to ensure equipment safety.
Frequently Asked Questions and Analysis in the Manufacturing Process of Pressure Vessels
With the continuous development of the pressure vessel manufacturing processes, some problems in the processes are gradually exposed, requiring us to find problems in time, avoid risks, and improve the safety of pressure vessels. These problems include material problem, deformation problem, weld problem, stress corrosion problem, and hydrogen embrittlement problem.
1. Material problem
The problems in the manufacturing process of pressure vessels mainly include the problem of material substitution. The situation of using poor and thin materials is not uncommon in the actual production process. The control of material quality is a prerequisite for the safe use of pressure vessels, so there should be strict quality control of materials from design, procurement, acceptance, storage, distribution, and use. National standards and specifications must be strictly enforced in the selection of materials. When purchasing materials, it must be ensured that the materials produced by the material manufacturer comply with relevant standards and specifications. Materials need to be accepted before entering the site, and the first step is to verify the qualification of the material supplier. If the main pressure components of the pressure vessel are substituted by poorer ones, they need to be filed with the original unit. The marking inspection is an effective method to prevent the mixing and mistaking of materials, and establish a complete material labeling management. Firstly, the procedure ensures the traceability of the pressure-bearing components from the process of storage, distribution, cutting and production circulation. Secondly, the parameters of the raw materials are inspected and the acceptance is strictly in accordance with relevant standards and specifications. The management of welding materials must be carried out in accordance with special specifications to avoid potential safety hazards.
Pressure Vessel Manufacturing Features
A pressure vessel is a kind of special equipment used in petrochemical industry, agriculture, national defense, and other fields. It can be divided into four categories: storage tanks, reaction vessels, heat exchangers and separators. Since most of the pressure vessels are used in harsh environments such as high temperature and high pressure conditions, the safety of the pressure vessel must be ensured and the material requirements for the manufacture of pressure vessels are very strict. In actual operation, the manufacture techniques of pressure vessels are very difficult and complicated, and it requires the cooperation of various professions. For pressure vessel designers, in addition to the expertise of pressure vessels, they also need to have the expertise of the industry they are in, and strictly design pressure vessels in accordance with standards and specifications to ensure equipment safety.
Frequently Asked Questions and Analysis in the Manufacturing Process of Pressure Vessels
With the continuous development of the pressure vessel manufacturing processes, some problems in the processes are gradually exposed, requiring us to find problems in time, avoid risks, and improve the safety of pressure vessels. These problems include material problem, deformation problem, weld problem, stress corrosion problem, and hydrogen embrittlement problem.
1. Material problem
The problems in the manufacturing process of pressure vessels mainly include the problem of material substitution. The situation of using poor and thin materials is not uncommon in the actual production process. The control of material quality is a prerequisite for the safe use of pressure vessels, so there should be strict quality control of materials from design, procurement, acceptance, storage, distribution, and use. National standards and specifications must be strictly enforced in the selection of materials. When purchasing materials, it must be ensured that the materials produced by the material manufacturer comply with relevant standards and specifications. Materials need to be accepted before entering the site, and the first step is to verify the qualification of the material supplier. If the main pressure components of the pressure vessel are substituted by poorer ones, they need to be filed with the original unit. The marking inspection is an effective method to prevent the mixing and mistaking of materials, and establish a complete material labeling management. Firstly, the procedure ensures the traceability of the pressure-bearing components from the process of storage, distribution, cutting and production circulation. Secondly, the parameters of the raw materials are inspected and the acceptance is strictly in accordance with relevant standards and specifications. The management of welding materials must be carried out in accordance with special specifications to avoid potential safety hazards.
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