According to GB 18248, 34CrMo4 cylinder tubes are mainly used for the manufacture of high-pressure cylinders, which are usually used to store and transport gases (such as oxygen, nitrogen, natural gas, etc.). GB 18248 specifies the requirements for cylinder tubes, covering the materials, dimensions, tolerances, mechanical properties, inspection methods, etc. of cylinder tubes. For 34CrMo4 cylinder tubes, a series of process flows need to be followed during production, and strict quality inspections need to be carried out to ensure that they can be used safely and reliably in high-pressure environments.
The outer diameter, wall thickness, length and other dimensions of the gas cylinder tube are precisely measured to ensure that they meet the tolerance requirements of GB 18248. Dimensional accuracy is usually achieved using precision measuring tools such as micrometers, laser measuring instruments, etc.
Accurate dimensions and wall thickness are achieved by controlling the cold drawing or cold rolling process.
Qualified gas cylinder tubes need to be marked with production batch number, material, dimensions and other information on the tube body to ensure traceability. The identification includes production date, manufacturer name, pipe grade, etc.
Anti-rust oil is usually used for protection during packaging, and appropriate packaging is performed according to different transportation requirements to prevent damage during transportation.
Gas cylinder tubes made of 34CrMo4 material need to pass multiple quality inspections during the production process to ensure that they meet the GB 18248 standard and safety requirements. The main inspection items include the following:
1. Chemical composition inspection
2. Mechanical property inspection
3. Dimension inspection
4. Surface defect inspection
5. Non-destructive inspection
6. Compression and pressure test
7. Traceability and identification
Gas cylinder tubes made of 34CrMo4 material must undergo strict production process control and quality inspection processes during the production process to ensure their safety and reliability under high pressure environments. The production process includes steps such as raw material preparation, perforation forming, hot rolling, cold rolling, heat treatment, and surface treatment, and each step requires strict quality control. In terms of inspection, in addition to chemical composition analysis and mechanical property testing, dimensional inspection, surface inspection, non-destructive inspection, and pressure testing are also required to ensure that the gas cylinder tubes meet the GB 18248 standard and can meet high safety requirements in actual use.
Post time: Dec-19-2024
