Plain Round Bar
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Specifications of High Quality Round Bar
1. Grade: GB, JIS, ASTM, EN
2. Grade: Q235, SS400, A36, S235JR
3. Diameter and mass: As below
Diameter | Mass | Diameter | Mass | Diameter | Mass |
(mm) | (kg/m) | (mm) | (kg/m) | (mm) | (kg/m) |
6 | 0.22 | 22 | 2.98 | 53 | 17.30 |
7 | 0.30 | 24 | 3.55 | 56 | 19.30 |
8 | 0.40 | 25 | 3.85 | 60 | 22.20 |
9 | 0.50 | 26 | 4.17 | 63 | 24.50 |
10 | 0.62 | 28 | 4.83 | 65 | 26.00 |
11 | 0.75 | 30 | 5.55 | 70 | 30.20 |
12 | 0.89 | 32 | 6.31 | 75 | 34.70 |
13 | 1.04 | 34 | 7.13 | 80 | 39.50 |
14 | 1.21 | 36 | 7.99 | 85 | 44.50 |
15 | 1.39 | 38 | 8.90 | 90 | 49.90 |
16 | 1.58 | 40 | 9.86 | 95 | 55.60 |
17 | 1.78 | 42 | 10.90 | 100 | 61.70 |
18 | 2.00 | 45 | 12.50 | 120 | 88.85 |
19 | 2.23 | 48 | 14.20 | 140 | 120.93 |
20 | 2.47 | 50 | 15.40 | 150 | 138.82 |
4. Material: Mild Steel
5. Heat treatment of high quality steel:
Fire: Isothermal annealing temperature is 800 ~ 880 °C, with 10 ~ 20 °C, the furnace cooling to about 600 °C, hardness above HB269.
Preheat temperature: 730-730 °C
Quenching temperature: 1190-1210 °C
Tempering temperature: 540-595 °C
Cold drawn, hardness 285 HBS
Cold drawn after annealing condition, hardness 277 HBS
Quenching methods: oil quenching, air cooling or salt bath quenching
Usage and Applications of High Quality Round Bar
1) Suitable for making various strong cutting tool abrasion resistance, impact resistance.
2) Used to produce all kinds of high hard and super hard saw blade, drill, tap, broach, gear hob and various kinds of milling cutter.
3) Used for advanced punching die, screw die, and the toughness and complicated shape of the punch, etc.
4) Is used for cold forging die and drawing mode, etc.
5) Recommended watchcase factory, screw factory and other cold stamping products industry use.
Packaging & Delivery of High Quality Round Bar
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 45 days
Trade terms: FOB, CFR, CIF
MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
Production Flow of High Quality Round Bar
The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process. The main measures process is high temperature solution and refinement cycle. High temperature solution can improve the carbide morphology and particle size. The aim is to make the loop refinement ultrafine austenite grains.
- Q:Can steel round bars be coated or painted?
- Yes, steel round bars can be coated or painted. Coating or painting steel round bars serves several purposes, such as preventing corrosion, enhancing aesthetics, and providing additional protection against environmental factors. Coatings and paints can be applied to steel round bars using various methods, including powder coating, electroplating, or wet paint application. These processes involve preparing the surface of the steel round bar by removing any existing rust or contaminants, followed by the application of the chosen coating or paint. The type of coating or paint used will depend on the specific requirements of the steel round bars, such as the intended use, environmental conditions, and desired appearance. Coating or painting steel round bars can significantly extend their lifespan, improve their visual appeal, and ensure their durability in various applications.
- Q:What are the applications of steel round bars in the aerospace industry?
- Steel round bars are widely used in the aerospace industry due to their exceptional strength, durability, and versatility. These bars are utilized in various applications, including: 1. Structural Components: Steel round bars are commonly used in the production of structural components in the aerospace industry. They are used for manufacturing aircraft frames, landing gear, wing spars, and other critical structural elements. The high tensile strength of steel ensures the structural integrity and safety of the aircraft. 2. Fasteners: Steel round bars are also used to produce fasteners such as bolts, screws, and pins. These fasteners play a crucial role in holding different parts of the aircraft together. Steel's strength and resistance to fatigue make it an ideal material for these critical connections. 3. Engine Components: Steel round bars find application in the production of various engine components. They are used to manufacture shafts, crankshafts, connecting rods, and turbine blades. These components need to withstand high temperatures, pressure, and mechanical stress, and steel's heat resistance and strength make it suitable for these demanding conditions. 4. Landing Gear: The landing gear of an aircraft is subjected to immense stress during takeoff, landing, and taxiing. Steel round bars are used in the construction of landing gear components such as axles and struts. The high strength and toughness of steel ensure the landing gear's ability to withstand the forces encountered during landing operations. 5. Tooling and Fixtures: Steel round bars are used to manufacture tooling and fixtures necessary for the production and maintenance of aircraft. These tools and fixtures are employed in various processes, including machining, assembly, and inspection. Steel's hardness and machinability make it an ideal material for these applications. In summary, steel round bars have numerous applications in the aerospace industry, ranging from structural components to fasteners, engine parts, landing gear, and tooling. The unique combination of strength, durability, and versatility offered by steel makes it an essential material in ensuring the performance, safety, and reliability of aerospace systems.
- Q:Is steel bar round wire? What's the difference? What are the main applications of wire rod?
- Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of them: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets.
- Q:What are the different surface treatments available for stainless steel round bars?
- There are several surface treatments available for stainless steel round bars to enhance their appearance, improve corrosion resistance, and provide added protection. Some of the common surface treatments for stainless steel round bars include: 1. Pickling: This process involves removing any surface impurities or oxides by immersing the stainless steel bar in an acid solution. Pickling helps to restore the stainless steel's natural corrosion resistance and creates a smooth and clean surface. 2. Passivation: Passivation is a chemical treatment that forms a thin, protective layer on the surface of stainless steel. By removing free iron and other contaminants, passivation helps to enhance the stainless steel's resistance to corrosion. 3. Electropolishing: This treatment involves applying an electric current to the stainless steel round bar while immersed in an electrolyte solution. Electropolishing removes a thin layer of material from the surface, resulting in a smooth, shiny, and corrosion-resistant finish. 4. Grinding and Polishing: Grinding and polishing are mechanical processes used to improve the surface finish of stainless steel round bars. Grinding involves removing any imperfections or roughness, while polishing creates a smooth and reflective surface. 5. Coating: Coating stainless steel round bars with a protective layer can provide additional corrosion resistance. Common coatings include electroplating with zinc or nickel, as well as applying organic coatings like paints or powder coatings. 6. Shot blasting: This treatment involves bombarding the stainless steel round bar's surface with small metallic or non-metallic particles at high velocity. Shot blasting removes any surface contaminants, scales, or oxides, resulting in a clean and textured surface. It is important to note that the choice of surface treatment depends on the desired end-use application, as well as the specific requirements for appearance and corrosion resistance. Consulting with a professional or manufacturer can help determine the most suitable surface treatment for stainless steel round bars.
- Q:What are the different types of steel round bar surface finishes for corrosion resistance?
- There are several types of steel round bar surface finishes that provide corrosion resistance. Some common options include polished, brushed, satin, and electropolished finishes. Additionally, coatings such as galvanized, black oxide, and powder coating can also be applied to steel round bars to enhance their corrosion resistance.
- Q:How are steel round bars manufactured?
- Steel round bars are manufactured through a process known as hot rolling. This process starts with heating a large steel billet in a furnace until it becomes soft and malleable. The billet is then passed through a series of rollers which compress and shape it into a round bar. The first step in hot rolling is the roughing mill, where the billet is passed through multiple sets of rollers to reduce its thickness and increase its length. This process also helps to ensure that the steel maintains a consistent temperature throughout. After the roughing mill, the bar enters the finishing mill, where it is further reduced in size and given its final shape. The finishing mill typically consists of several sets of rollers that gradually decrease the diameter of the bar while increasing its length. This process is repeated until the desired dimensions are achieved. During the rolling process, the steel round bar is constantly monitored for quality control. Any imperfections or defects that may arise are detected and corrected to ensure the final product meets the required specifications. Once the bar reaches its final dimensions, it is cooled and cut to the desired length. The cooling process can be done using air, water, or a combination of both. After cooling, the bar is inspected for any surface defects and undergoes further processing if necessary. In some cases, additional treatments such as heat treatment or surface finishing may be applied to enhance the properties and appearance of the steel round bar. Overall, the manufacturing of steel round bars involves a combination of heating, rolling, cooling, and cutting processes to produce a high-quality product that meets the specific requirements of various industries.
- Q:Are steel round bars magnetic?
- Yes, steel round bars can be magnetic. The magnetic properties of steel depend on its composition and processing. Most commonly used steel alloys, such as carbon steel or stainless steel, contain iron as the main component. Iron is a ferromagnetic material, which means it can be magnetized. Therefore, steel round bars made from these alloys will exhibit magnetic properties. However, it is important to note that the strength of the magnetism can vary depending on the specific composition of the steel. Some stainless steel alloys, for example, have a lower magnetic permeability and may exhibit weaker magnetic properties compared to carbon steel.
- Q:What is the maximum nitrogen content allowed for steel round bars?
- The maximum nitrogen content allowed for steel round bars varies depending on the specific steel grade and application requirements. However, in general, the nitrogen content is typically limited to around 0.025-0.035% to maintain the desired mechanical properties and avoid detrimental effects on the material's performance.
- Q:What is the difference between a centerless ground and a polished steel round bar?
- A centerless ground steel round bar is a type of steel bar that has been ground to achieve precise dimensions and a smooth surface finish. The grinding process involves removing material from the outer diameter of the bar, resulting in a consistent diameter and improved dimensional accuracy. On the other hand, a polished steel round bar is a steel bar that has been subjected to a polishing process to enhance its appearance and provide a reflective, shiny surface. While both processes improve the surface finish, centerless grinding focuses more on dimensional accuracy and consistency, while polishing emphasizes aesthetics and visual appeal.
- Q:Can steel round bars be annealed?
- Steel round bars can indeed undergo annealing, a heat treatment process in which the steel is heated to a specific temperature and gradually cooled. This procedure serves to alleviate internal stresses, enhance ductility, and improve the steel's machinability. Annealing can be employed on various steel products, including round bars, to render them more pliable, easier to work with, and minimize the likelihood of cracking or failure in subsequent manufacturing procedures.
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Plain Round Bar
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
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OKorder Financial Service
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