Cold Rolled Sheet Coil

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Hot Rolled Steel Coil GB Standard in High Quality

Product Name	Cold Rolled Sheet Coil
Material	SPCC/SPCD/SPCE/DC01/ST12/ ST14/SPCD/DC03/DC04 ect.
Grade Standard	JIS G3302, EN10142, ASTM653, ASTM95
Thickness	0.15-3.5mm
Width	600mm-1500mm
Coil ID	508-610mm
Coil OD	max 1500mm
Weight	3-10 Tons
Tolerance	Thickness tolerance:+/-0.02mm; Width tolerance:+/-5mm
Surface	No-skin passed or Skin passed, Tensile leveled
Surface Treatment	Chromate/Unchromate passivation, fingerprint resistant treatment, oiled/unoiled
Annual Output	350,000MT
Application	Construction, hardware, home applicances, interior decoration

General Application of Cold Rolled Steel Coil:

Classification	Designation	Characteristics	Main applications
Commercial quality	SPCC SPCCT	Commercial quality suitable for bending fabrication and simple forming; this is the type in greatest demand.	Refrigerators, cabinets, power distribution baords and drums.
Drawing quality	SPCD	Drawing quality second only to that of SPCEN. Excellent uniformity.	Automobile floor and roof panels.
Deep-drawing quality	SPCE SPCF	Deep-drawing quality.With metallurgically controlled grain size, it retains its beautiful finish even after being deep-drawn.	Automobile fenders and quarter panels
Extra deep-drawing quality	SPCG	Extra-low-carbon steel sheets with highest workability	Automobile internal panels and deep-drawn parts

Production Flow Chart

Specification

1. Thickness: 0.4-2.0mm

2. Width: 900-1250mm

3. Inner Diameter: 508 & 610mm

4. Weight of Steel Coil: 3-15MT

5. Heat Treatment: Annealed + Smoothed

6. Margin Status: EC & EM

7. Surface Quality: FC & FD

8. Surface Treatment: Oiling

9. Surface Status: Bright

Chemical Components

Grade	Chemical Components
Grade	C	Mn	P	S	Alt
St12	≤0.10	≤0.50	≤0.035	≤0.025	≥0.020
St13	≤0.08	≤0.45	≤0.030	≤0.025	≥0.020
St14	≤0.08	≤0.40	≤0.025	≤0.020	≥0.020

Mechanical Properties

1. Yield Strength: ≤320MPa

2. Tensile Strength: ≤370MPa

3. Elongation (L=50mm, b=25mm) When:

(1) Nominal Thickness <0.25mm: 30%

(2) Nominal Thickness 0.25mm-<0.40: 32%

(3) Nominal Thickness 0.40-<0.60mm: 34%

(4) Nominal Thickness 0.60-<1.0mm: 36%

(5) Nominal Thickness 1.0-<1.6mm: 37%

(6) Nominal Thickness >1.6mm: 38%

Q: How are steel coils processed for different levels of hardness?: Different levels of hardness can be attained in steel coils using a variety of methods. One common approach is heat treatment, in which the coils are heated to a specific temperature and then rapidly cooled to modify their microstructure and achieve the desired hardness. The heat treatment process can encompass quenching, tempering, or annealing, depending on the desired hardness level. Quenching involves quick cooling of the coils in a liquid medium like water or oil to achieve a high hardness level. On the other hand, tempering requires reheating the coils to a lower temperature and gradually cooling them to attain a desired balance between hardness and toughness. Annealing, on the other hand, involves heating the coils to a specific temperature followed by slow cooling to release internal stresses and obtain a softer and more malleable material. Additionally, mechanical processes like cold rolling or cold working can be employed to enhance the hardness of steel coils. These processes involve applying compressive forces to the coils, causing the material to deform and resulting in increased hardness. Overall, achieving different hardness levels in steel coils requires meticulous control of temperature, cooling rate, and mechanical forces to obtain the desired properties for specific applications.

Q: for instance Cr-Ni steeldoes this refer to plated steel or a uniform mixture: stainless steel is an alloy normally iron with additions of C, Mn, Ni, Cr, and Nb - amounts added depend on properties required. Corrosion resistance is due to a very thin but dense layer of chromium oxide which forms at the surface and prevents further attack. Ordinary steel on the other hand becomes coated with a porous layer of iron oxide(rust) through which the atmosphere can pass and cause further corrosion.

Q: Also, what is the top best slow cooker that is 100% stainless steel? Thank you!: My SS pans are Prestige.

Q: What are the dimensions of steel coils used in the metalworking tool industry?: The metalworking tool industry has a wide range of dimensions for steel coils, which can vary depending on the specific application and requirements of the tool. However, there are certain dimensions that are commonly observed in this industry. Steel coils used in metalworking tools typically come in different widths, ranging from 24 inches to 72 inches. The thickness of the coils can also vary, with common thicknesses ranging from 0.020 inches to 0.250 inches. Moreover, the length of the coils can vary significantly, with standard lengths usually falling between 100 feet and 2000 feet or even more. These dimensions are selected based on several factors, such as the type of metal being worked, the specific tool being used, and the desired outcome of the metalworking process. Additionally, other factors like the weight and handling capabilities of the tool, as well as the efficiency of the manufacturing process, may also influence the dimensions of the steel coils used. To ensure the appropriate dimensions for steel coils in the metalworking tool industry, it is essential to consult with manufacturers, suppliers, or industry experts. This is crucial because these dimensions can vary based on specific needs and preferences.

Q: What are the different types of steel coil cutting machines?: There are several different types of steel coil cutting machines available in the market, each designed to cater to specific needs and requirements. Some of the commonly used types include: 1. Slitting Machines: Slitting machines are used to cut steel coils into narrower strips. They have multiple circular blades that make precise cuts along the length of the coil, allowing for the production of narrower coils or strips. 2. Cut-to-Length Machines: Cut-to-length machines are designed to cut steel coils into specific lengths. These machines can accurately measure and cut the coil to the desired length, ensuring uniformity and precision. 3. Rotary Shears: Rotary shears are heavy-duty cutting machines that can handle thicker and larger steel coils. They use a rotating blade to cut through the coil, making it suitable for cutting thicker gauge materials. 4. Multi-Blanking Machines: Multi-blanking machines are designed to cut steel coils into multiple smaller blanks simultaneously. These machines can cut the coil into various shapes and sizes, making them ideal for producing multiple parts from a single coil. 5. Slit and Cut-to-Length Combination Machines: These machines combine the functionalities of slitting and cut-to-length machines, allowing for both narrow strip cutting and length cutting in a single process. They are versatile and efficient, saving time and increasing productivity. Each type of steel coil cutting machine has its own advantages and is suitable for specific applications. The choice of machine depends on factors such as coil thickness, desired strip width, required length accuracy, and production volume.

Q: How are steel coils used in the manufacturing of power transmission towers?: Steel coils are used in the manufacturing of power transmission towers as they are shaped and formed into the required structural components, such as beams and brackets. These coils are processed through rolling mills to obtain the desired thickness and shape, ensuring the strength and durability of the towers. The steel coils provide the necessary strength and structural integrity to support the weight of the transmission lines, withstand environmental conditions, and ensure reliable power transmission.

Q: I have a set of Stainless steel pots and pans. Everything is sticks to them. What must I do so things don't stick?: First, they must be absolutely shiny, clean. Use a scouring pad in circular motions to make them as smooth as possible, then use Non-stick spray, but read the label, some oil sprays contain water and they will stick every time. Spray with canola or pour canola in the pan and warm it up before putting in the food. For flavor you can mix the canola with some olive oil or butter, but don't overheat or they will smoke and burn. For frying pancakes or eggs, the best choice is a teflon coated pan, use an oil spray and medium heat only.

Q: I am planning to buy a Walther P22. I have liked the Pistol's performance-superb.The only confusion that I have is about the Polymer Frame.Just for this I may shift to someother manufacturer.Are Polymer Frames better than Steel in durability and lifespan.Walther says YES.Any comments on this...Practical users...Thanks in advance: All polymer frames are cast around steel 'skeleton' inserts, which bear the stress and wear between receiver slide, as well as other wear points. The great advantage to polymer frames is the lower weight over the polymer composite compared to an all-steel or other metal alloy receiver frame. As all wear contact points are 'steel-to-steel', the service life expectancy of a polymer-frame weapon will be the same as an all-steel frame design. NO polymer-frame design I know of has ANY stress or load contact points between metal and polymer-only surfaces. My polymer-frame H-K USP and my Glocks are constructed this way.

Q: How are steel coils used in the production of electrical transformers?: Steel coils are an essential component in the production of electrical transformers as they provide the core structure that allows for efficient magnetic coupling and energy transfer within the transformer. The steel coils are wound tightly to create the primary and secondary windings, which are responsible for stepping up or stepping down the voltage levels in the transformer. This allows for the safe and efficient distribution of electrical energy.

Q: What are the challenges in coil leveling for high-strength steel?: Coil leveling for high-strength steel poses several challenges that need to be addressed in order to achieve optimal results. One of the main challenges is the inherent hardness and strength of the steel itself. High-strength steel is specifically designed to have enhanced mechanical properties, such as tensile strength and hardness, which make it more difficult to deform and shape. The high-strength nature of the steel requires specialized leveling equipment that can apply sufficient force to overcome its resistance to deformation. This may involve using stronger and more durable leveling rollers or increasing the pressure exerted during the leveling process. Failure to apply the appropriate force can result in incomplete leveling, leading to residual stress and potential dimensional inaccuracies in the final product. Another challenge in coil leveling for high-strength steel is the potential for springback. Springback refers to the tendency of the material to revert to its original shape after being deformed. High-strength steel is particularly prone to springback due to its higher elastic modulus. This can result in uneven leveling and dimensional variations in the coil. To mitigate springback, advanced leveling techniques may be employed, such as overbending or pre-bending the steel. Overbending involves bending the steel beyond the desired level, allowing it to spring back to the desired shape. Pre-bending, on the other hand, involves intentionally bending the steel in the opposite direction before leveling it, counteracting the effects of springback. These techniques require precise control and expertise to ensure accurate leveling. Additionally, high-strength steel often has a more pronounced yield point, which is the stress level at which permanent deformation occurs. This can make it more challenging to achieve consistent and uniform leveling throughout the coil. Proper adjustment of the leveling equipment and careful monitoring of the leveling process are necessary to address this challenge effectively. Furthermore, high-strength steel coils are often thinner and more sensitive to surface imperfections. The leveling process must be carefully regulated to avoid causing damage to the steel surface, such as scratches or indentations. This may involve utilizing softer leveling rollers or implementing protective measures, such as cushioning materials or coatings, to prevent surface defects. In summary, the challenges in coil leveling for high-strength steel revolve around its inherent hardness, springback tendencies, yield point behavior, and sensitivity to surface imperfections. Overcoming these challenges requires specialized equipment, advanced leveling techniques, precise control, and expertise to ensure accurate and high-quality leveling results.

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