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DIN2391 High Precision Cold Drawn Bright Precision Seamless Steel Tube
DIN2391 High Precision Cold Drawn Bright Precision Seamless Steel Tube
DIN2391 high precision cold drawn bright precision seamless steel tube is a specialized steel tube for hydraulic systems and the automotive industry.
DIN2391 is a standard specification for seamless precision steel tubes for mechanical and automotive engineering purposes. These tubes are typically cold drawn and have precise tolerances in terms of dimensions and surface quality. The "bright" finish refers to the surface finish of the tube, indicating a smooth and shiny appearance.
These tubes are widely used in various industries where precision and reliability are crucial, such as automotive components, hydraulic systems, and instrumentation. The cold drawing process ensures tight dimensional tolerances and enhances the mechanical properties of the steel, making it suitable for high-performance applications.
How to the process of DIN2391 high precision cold drawn bright precision seamless steel tube:
High-quality carbon steel, precision drawn, bright heat treatment without oxidation (NBK state), non-destructive testing, the inner wall of the steel tube is brushed with special equipment and subjected to high-pressure washing, rust preventive oil is applied to the outer surface of the steel tube as anti-rust treatment, and both ends are sealed for dust prevention.
The process of manufacturing DIN2391 high precision cold drawn bright precision seamless steel tubes typically involves several steps:
1. Selection of Raw Material:
High-quality steel billets or hollow tubes are selected as raw materials. These materials should have the desired chemical composition and mechanical properties suitable for the intended application.
2. Cold Drawing:
The selected raw material undergoes cold drawing, which is a process of reducing the diameter and wall thickness of the tube while improving its surface finish and dimensional accuracy. The material is pulled through a series of dies at room temperature, gradually reducing its size.
3. Annealing:
After cold drawing, the tubes are often subjected to annealing. Annealing involves heating the steel to a specific temperature and then gradually cooling it, which helps relieve internal stresses and improve the materials mechanical properties and machinability.
4. Surface Treatment:
The tubes may undergo surface treatment processes to achieve the desired finish. This could involve processes such as pickling, passivation, or polishing to remove any surface imperfections and contaminants, leaving a smooth and shiny surface finish.
5. Quality Control:
Throughout the manufacturing process, quality control measures are implemented to ensure that the tubes meet the required specifications and standards. This includes dimensional inspection, surface quality assessment, and mechanical property testing.
6. Cutting and Finishing:
Once the tubes pass quality control checks, they are cut to the required lengths and undergo any additional finishing processes if necessary, such as deburring or chamfering.
7. Packaging and Shipping:
Finally, the finished tubes are carefully packaged to protect them during transportation and storage. They are then shipped to customers or distributors for use in various applications.
The process of manufacturing DIN2391 high precision cold drawn bright precision seamless steel tubes involves careful control of various parameters to ensure the final product meets the required standards for dimensional accuracy, surface finish, and mechanical properties.
Main features of DIN2391 high precision cold drawn bright precision seamless steel tube:
High accuracy, good surface finish, no oxidation layer on the inner and outer walls of the steel tube after heat treatment, good cleanliness of the inner wall, the steel tube can withstand high pressure, no deformation during cold bending, no cracks after expanding and flattening, suitable for various complex deformations and mechanical processing. Steel tube color: Light gray with white.
Main applications of DIN2391 high precision cold drawn bright precision seamless steel tube:
Steel tube for hydraulic systems, steel tube for automotive applications, for customers with high requirements on tube accuracy, surface finish, cleanliness, and mechanical performance, hydraulic steel tube for non-standard mechanical hydraulic systems, hydraulic steel tube for automotive test equipment hydraulic systems, seamless steel tube for sanitation vehicle hydraulic systems, precision steel tube for high-altitude operation equipment hydraulic systems, precision hydraulic seamless steel tube for tunnel boring machine hydraulic systems.
The main features of DIN2391 high precision cold drawn bright precision seamless steel tubes include:
1. High Precision:
These tubes are manufactured with tight dimensional tolerances, ensuring precise outer diameter, inner diameter, and wall thickness specifications. This precision is essential for applications where accuracy is critical, such as in hydraulic systems or automotive components.
2. Smooth Surface Finish:
The "bright" finish of these tubes signifies a smooth and shiny surface, which is achieved through careful cold drawing and surface treatment processes. The smooth surface finish reduces friction and wear, making them suitable for applications where fluid flow or sliding mechanisms are involved.
3. Excellent Mechanical Properties:
Cold drawing and subsequent annealing processes enhance the mechanical properties of the steel, including high tensile strength, good ductility, and uniformity in material structure. This ensures the tubes can withstand high pressures, stresses, and mechanical loads without deformation or failure.
4. Uniformity and Consistency:
DIN2391 standards ensure consistent quality and uniformity across batches of tubes. This reliability is crucial for industries where consistent performance and interchangeability of components are essential, such as in manufacturing and machinery.
5. Corrosion Resistance:
Depending on the material composition and surface treatment, DIN2391 high precision cold drawn bright precision seamless steel tubes can exhibit good corrosion resistance, making them suitable for use in environments with exposure to moisture, chemicals, or corrosive substances.
6. Wide Range of Sizes and Grades:
These tubes are available in a wide range of sizes, dimensions, and grades to suit various applications and requirements. Whether its small diameter tubes for precision instruments or larger tubes for hydraulic systems, DIN2391 standards offer versatility and flexibility.
7. Cost-Effectiveness:
Despite their high precision and quality, DIN2391 high precision cold drawn bright precision seamless steel tubes can be cost-effective compared to other precision tubing options. Their efficient manufacturing process and durability contribute to their overall cost-effectiveness in various industrial applications.
High Precision Cold Drawn Bright Precision Seamless Steel Tube Specifications:
- DIN2391 high precision cold drawn bright precision seamless steel tube main specifications:
Outer diameter: 4-76mm, wall thickness: 0.5-6.0mm
- High precision cold drawn bright precision seamless steel tube standards:
DIN2391/EN10305-1/4, SAEJ524/JISG3445
- Materials of DIN2391 high precision cold drawn bright precision seamless steel tube:
ST35, ST37.4, ST37, ST45, ST52, ST52.4, E235, E255, E355, SAE1010, SAE1020
- Delivery condition of DIN2391 high precision cold drawn bright precision seamless steel tube:
NBK (bright annealed without oxygen normalizing)
- Length of DIN2391 high precision cold drawn bright precision seamless steel tube:
5800mm, 6000mm.
- Packaging of DIN2391 high precision cold drawn bright precision seamless steel tube:
Bundle packaging or wooden box packaging.
- Surface rust prevention treatment of DIN2391 high precision cold drawn bright precision seamless steel tube:
Rust preventive oil is applied to the inner and outer surfaces.
- Surface quality of DIN2391 high precision cold drawn bright precision seamless steel tube:
High accuracy, good surface finish, no oxidation layer, no cracks, folds, rolling folds, scars, delamination, wrinkles, and other defects.
- Surface cleanliness:
Clean without iron chips, dust, extending the service life of hydraulic systems.
- Mechanical properties of DIN2391 high precision cold drawn bright precision seamless steel tube:
Better elongation and strength performance, no deformation after cold bending, no cracks after expanding and flattening.
- Testing of DIN2391 high precision cold drawn bright precision seamless steel tube:
Tensile strength test, expansion and flattening test, hardness test, chemical composition test.
High Precision Cold Drawn Tube
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