High grade hot- rolled strip
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Hot rolled strip, the English name of Hot - rolled strip, also known as Hot rolled steel belt, commonly known as is a Hot plate. Hot rolled strip width less than or equal to 600 mm, the thickness of 0.35-200 - mm steel plate and the thickness of 1.2-25 mm steel belt.
The relevant classification
The editor
Hot rolled steel plate is divided into structural steel, mild steel, welding steel, then according to the steel of various steel products to find what you need to check the specific density and composition of the steel. Hot rolled steel plate hardness is low, easy processing, good extensibility. Hot rolled strip steel products including steel belt (volume) and has its shear of steel plate. Steel belt (volume) can be divided into straight hair volume and finishing (volume classification, formation and slitting roll).
Hot rolled steel plate strength is relatively low, the surface quality almost (oxidation, low roughness), but the plasticity is good, generally for the medium plate, manufacture, high strength, high hardness, high surface finish, generally for sheet, can be used as a drawing board.
2 the difference between
The editor
Cold rolled steel sheet due to a certain degree of strain hardening, toughness is low, but can reach better showed, used for cold bending spring pieces and parts, at the same time due to the yield point is close to the tensile strength, so no foresight to danger, in use process in the load exceeds allowable load are prone to accidents.
1) cold plate using cold processing surface without scale, good quality. Hot rolled steel plate, surface of oxide skin are processed using the hot rolled plate thickness with the poor.
2) hot rolled steel toughness and surface smoothness is poor, the price is low, and the extension of manufacture and resilient, but the price is more expensive.
3) rolling is divided into cold rolled and hot rolled steel plate, distinguish between point for recrystallization temperature.
4) cold rolling: generally used in the production of strip cold rolling, the rolling speed is higher. The temperature of the hot rolled steel plate, the temperature of the hot rolled and forged close.
5) don't plating surface of hot rolled steel plate into dark brown, not plated cold plate surface is gray, from the smooth degree of surface after plating will distinguish, lengzha board smoothness is higher than that of hot rolled steel plate.
Data reference
标准及牌号 | 国家标准 | 相当国外标准 | 作用与用途 | ||
材料类别 | 执行标准 | 牌号 | 标准号 | 牌号 | 适应于制造冷成型加工的零件 |
低碳钢卷板 | Q/BQB302 | SPHC | JISG3131 | SPHC | |
SPHD | SPHD | ||||
SPHE | SPHE | ||||
SAE1006/SAE1008 | SAE1006/SAE1008 | ||||
XG180IF/200IF | XG180IF/200IF | ||||
一般结构用钢 | GB/T912-1989 | Q195 | JISG3101 | SS330 | 用于建筑、桥梁、船舶、车辆等一般构建 |
Q235B | SS400 | ||||
SS400 | SS490 | ||||
ASTMA36 | SS540 |
- Q: How are steel strips coated or treated for corrosion resistance?
- Steel strips are commonly coated or treated for corrosion resistance through processes such as galvanization, where a layer of zinc is applied to the surface of the steel to provide a protective barrier against corrosion. Additionally, steel strips can be treated with various types of coatings, such as organic or inorganic coatings, that create a barrier between the steel and corrosive elements in the environment. These coatings are often applied through methods like hot-dip coating, electroplating, or painting, depending on the specific requirements and desired level of corrosion resistance.
- Q: How are steel strips processed for electrical conductivity?
- Steel strips are typically processed for electrical conductivity through a combination of annealing, plating, and coating techniques. Annealing helps to reduce the steel's resistance by heating it and then slowly cooling it, which rearranges the crystal structure and aligns the grains. Plating with materials like tin or zinc enhances conductivity by providing a protective layer and reducing oxidation. Coating the steel strip with insulating materials, such as enamel or varnish, further improves electrical conductivity by preventing any short circuits or leakage.
- Q: What are the specifications for steel strips used in the production of door hinges?
- The specifications for steel strips used in the production of door hinges typically include requirements for the steel grade, dimensions (such as thickness and width), surface finish, and mechanical properties (such as tensile strength and hardness). These specifications ensure that the steel strips have the necessary strength, durability, and dimensional accuracy to function effectively in door hinges.
- Q: What is the length tolerance of steel strips?
- The length tolerance of steel strips can vary depending on the specific type and grade, but generally it is around ± 0.2% to ± 0.5% of the specified length.
- Q: What are the common yield strengths for steel strips?
- The yield strengths of steel strips can vary depending on the specific type of steel and its intended application. Generally, yield strengths for steel strips range from 210 to 550 megapascals (MPa). Mild steel, which is a type of low carbon steel, typically has a yield strength of around 210 MPa. On the other hand, spring steel, which is a higher carbon steel, can have yield strengths exceeding 550 MPa. It is worth noting that these values are approximate and can be influenced by factors such as the manufacturing process, heat treatment, and alloy composition. Therefore, it is always advisable to refer to the specific material specifications or industry standards for accurate and precise information regarding the yield strength of a particular steel strip.
- Q: What are the different cleaning methods for steel strips?
- There are several different cleaning methods for steel strips, including mechanical cleaning, chemical cleaning, and electrochemical cleaning. Mechanical cleaning involves using abrasive materials or brushes to physically remove dirt, debris, or scale from the surface of the steel strip. Chemical cleaning involves using various cleaning solutions or solvents to dissolve or loosen contaminants on the strip. Electrochemical cleaning utilizes an electric current to remove oxidation or other surface contaminants through the process of electrolysis. The choice of cleaning method depends on the specific requirements and condition of the steel strip.
- Q: How are steel strips used in the manufacturing of machinery?
- Steel strips are commonly used in the manufacturing of machinery as they serve multiple purposes. They are often used for making machine parts, such as gears, brackets, and frames, due to their high strength and durability. Additionally, steel strips can be formed and shaped into various components, allowing for precise customization and assembly of machinery.
- Q: What are the main factors affecting the fatigue strength of steel strips?
- The main factors affecting the fatigue strength of steel strips include the material composition and properties of the steel, the surface condition and quality of the strip, the presence of any manufacturing defects or stress concentrations, the applied load, and the frequency and duration of cyclic loading. Additionally, the temperature and environment in which the steel strips are used can also impact their fatigue strength.
- Q: Can steel strips be used in the manufacturing of appliances?
- Yes, steel strips can be used in the manufacturing of appliances. Steel strips are commonly used in various parts of appliances such as frames, panels, and internal components due to their strength, durability, and ability to withstand high temperatures.
- Q: Can steel strips be cut to custom sizes?
- Indeed, it is possible to cut steel strips into custom sizes. Steel strips find wide usage across industries and applications, with availability in diverse dimensions of width, thickness, and length. Based on the unique demands of a particular project or application, steel strips can be readily tailored to fit custom measurements. This can be achieved through a range of cutting techniques including shearing, sawing, or laser cutting. Such cutting methods enable meticulous and precise customization of steel strips in order to satisfy the desired specifications.
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High grade hot- rolled strip
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