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:
No, steel strips cannot be used for making coins. Coins are typically made from metals such as copper, nickel, or zinc, which have desirable characteristics like durability, malleability, and resistance to corrosion. Steel, on the other hand, is primarily an alloy of iron and carbon and is not commonly used for coin production due to its hardness and susceptibility to rusting. Additionally, coins made from steel strips would not possess the necessary weight and feel typically associated with coins, making them less desirable for everyday use.
Q:
Steel strips are typically processed for surface cleaning through methods such as shot blasting or pickling. Shot blasting involves propelling abrasive particles at high velocities to remove contaminants and create a clean surface. Pickling, on the other hand, involves immersing the steel strips in an acid solution to dissolve any oxides or scale present on the surface. Both methods effectively clean the steel strips and prepare them for further processing or coating.
Q:
Steel strips are commonly used in the packaging industry as a strong and durable material for securing and bundling various products. They are often used to reinforce and secure cardboard boxes, pallets, and other packaging materials, providing stability and strength during transportation and storage. Steel strips are also used to create strapping for heavy-duty packaging, such as securing heavy machinery or industrial equipment, ensuring the safe transport and handling of goods.
Q:
There are several different types of protective coatings that can be applied to steel strips to enhance their durability and prevent corrosion. These coatings are designed to create a barrier between the steel and the external environment, thereby minimizing the risk of damage and extending the lifespan of the steel strips. Some of the most common types of protective coatings for steel strips include: 1. Paint coatings: These coatings consist of a layer of paint that is applied to the surface of the steel strips. Paint coatings provide a protective barrier against moisture and other corrosive elements, preventing direct contact between the steel and the environment. 2. Galvanized coatings: Galvanizing is a popular method of protecting steel strips from corrosion. This process involves immersing the steel strips in molten zinc, which forms a protective layer of zinc on the surface. Galvanized coatings provide excellent resistance against rust and can withstand harsh environmental conditions. 3. Powder coatings: Powder coatings are applied as a dry powder and then heated to create a protective layer on the steel strips. This type of coating is known for its durability, resistance to chemicals, and excellent adhesion. Powder coatings also offer a wide range of colors and finishes, making them a popular choice for decorative purposes. 4. Epoxy coatings: Epoxy coatings are a type of protective coating that is formed by mixing epoxy resin and a hardening agent. These coatings provide excellent adhesion, chemical resistance, and durability. They are often used in industrial applications where steel strips are exposed to harsh conditions, such as chemical plants or offshore structures. 5. Polyurethane coatings: Polyurethane coatings offer a high level of protection against abrasion, impact, and chemicals. They are commonly used in applications that require a flexible and durable coating, such as automotive parts or machinery components. 6. Ceramic coatings: Ceramic coatings are known for their exceptional resistance to high temperatures and chemical corrosion. These coatings are often used in industries such as aerospace and automotive, where steel strips may be exposed to extreme conditions. It is important to choose the right type of protective coating for steel strips based on the specific requirements and environmental conditions. Factors such as the intended use, exposure to moisture or chemicals, and temperature variations should be considered when selecting the appropriate coating. Consulting with a coatings expert or manufacturer can help determine the best protective coating for the desired application.
Q:
Some common defects found in steel strips include surface scratches, rust or corrosion, uneven thickness, edge cracks, and waviness.
Q:
Steel strips can be hardened for enhanced strength through a process called heat treatment. This process involves subjecting the steel strips to extreme temperatures followed by rapid cooling. There are two main methods used for hardening steel strips: quenching and tempering. Quenching is the initial step in the heat treatment process, where the steel strips are heated to a high temperature and then rapidly cooled by immersing them in a quenching medium such as oil or water. This rapid cooling causes the steel to undergo a phase transformation, resulting in a hardened structure. The severity of the quenching process determines the hardness achieved, with faster cooling rates leading to greater hardness. Quenching also helps in achieving a fine-grained microstructure, which further enhances the strength of the steel strips. However, the steel strips obtained through quenching are extremely brittle and may be prone to cracking. To overcome this, tempering is performed. Tempering involves reheating the hardened steel strips to a lower temperature, typically below the critical temperature, and then cooling them slowly. This process relieves the internal stresses in the steel and increases its toughness and ductility, while maintaining a certain level of hardness. The combination of quenching and tempering allows for the desired strength and hardness while retaining some degree of toughness in the steel strips. This process is widely used in various industries, such as automotive, construction, and manufacturing, where high-strength steel is required for applications such as springs, blades, or structural components.
Q:
Some common surface finishing techniques for steel strips include galvanization, electroplating, painting, and powder coating. These techniques are used to enhance the appearance, durability, and corrosion resistance of the steel strips.
Q:
Yes, steel strips can be used in the production of medical instruments. Steel is a durable and versatile material that can be easily sterilized, making it suitable for manufacturing surgical tools, implants, and other medical equipment.
Q:
The thickness tolerance of steel strips can vary depending on the specific grade and manufacturing process. In general, the industry standard for steel strip thickness tolerance is typically +/- 10% of the specified thickness. However, it is important to note that different applications may have more stringent tolerance requirements. For instance, industries such as automotive or aerospace might require tighter thickness tolerances to ensure precise fit and performance. Therefore, it is crucial to consult the relevant industry standards or specifications to determine the specific thickness tolerance requirements for a particular steel strip application.
Q:
Some alternatives to steel strips in specific applications include aluminum strips, composite strips, and plastic strips. These alternatives offer different properties such as lighter weight, corrosion resistance, and flexibility, making them suitable for various specific applications where steel may not be the ideal choice.

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