PROFESSIONAL FACTORY SALE spring steel strip

PROFESSIONAL FACTORY SALE spring steel strip System 1

PROFESSIONAL FACTORY SALE spring steel strip

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Quick Details

Standard:AISI, ASTM, DIN, GB, JIS
Steel Grade:Q235B
Thickness:0.15-10mm, 0.15-4.00mm
Place of Origin:Hebei, China (Mainland)
Technique:Cold Rolled
Surface Treatment:Polished
Application:roller shutter door
Model Number:Spring Steel Strip
Brand Name:Dinghe
Width:8.0-300mm
Length:in coil
steel grade:CK45,CK50,CK55,CK67, CK75
surface treatment:Polished,Polish,tempered blue, yellow, green
edge:rounded,slit,sloped
heat treated:Hardened tempered,Annealed
hardness:H&T:40-55HRC
property:wear resistant

Packaging & Delivery

Packaging Details:	Each bundle with anti-rust paper and light oil then wrapped in plastic film and put in 20ft container for standard sea worthy
Delivery Detail:	30 days after the order confirmed

Specifications

CK67 Mn high carbon steel strip rolling shutter spring
1.Grade:CK45,CK50,CK55,CK60,CK67
2.Hardness:Annealed<19HRC,H&T:40-55H

Hardened and Tempered spring steel strip

Grade: ck60,ck67,ck75(SAE 1065, SAE 1070, SAE 1075) , 60Si2Mn, 50CrV4, stainless 420, 430

Size:0.15-2.5mm*8-300mm

Hardness: 32-55hrc

Surface: gray blue, polished blue, bright, bright polished...

Edge: rounded, slit, both rounded

Coil weight: as your requirement

Standard of surface: No flaw, burr, rust.

Yield Strees(Strength): 370-1175 N/mm2

Tensile Strength: 540-1275 N/mm2

Packing:

1 Each coil is closely covered by plastic film.

2 Outer is compound paper packing.

3 Delivered in iron pallets.

Applications: spring for roller shutter,hand tools,construction tools, metal parts, auto parts....etc

Q: How are steel coils inspected for surface quality?: To ensure that steel coils meet the required standards and are defect-free, a meticulous inspection process is carried out using various methods and technologies. The following steps are involved in inspecting the surface quality of steel coils: 1. Visual Inspection: Trained personnel visually examine the entire surface of the coils to detect any visible defects such as scratches, dents, or irregularities. This step allows for the identification of obvious issues through visual observation. 2. Magnetic Particle Inspection: This non-destructive testing method involves applying a magnetic field to the surface of the steel coil and then adding a magnetic particle solution. Any surface cracks or defects cause the magnetic particles to cluster, making them visible under appropriate lighting. This technique effectively detects surface cracks and abnormalities. 3. Eddy Current Testing: Electromagnetic induction is used in this inspection method to identify surface defects. An eddy current probe is moved over the surface of the steel coil, and any variations in the electrical current induced by the magnetic field are detected. This technique is especially useful for detecting surface cracks, pits, or corrosion. 4. Ultrasonic Testing: Ultrasonic waves are employed to inspect the surface of the steel coil for hidden defects like subsurface cracks or inclusions. High-frequency sound waves are transmitted into the material, and any changes in the reflected sound wave pattern indicate the presence of defects. Ultrasonic testing is highly reliable and can detect even the smallest defects within the steel coil. 5. Surface Roughness Measurement: Specialized equipment is used to measure the surface roughness of the steel coil. This measurement helps determine if the surface meets the required smoothness standards. The equipment scans the surface and provides detailed information about the roughness, allowing the inspector to ensure it falls within an acceptable range. In summary, the inspection of steel coils for surface quality involves a comprehensive process that combines visual examination with advanced testing methods such as magnetic particle inspection, eddy current testing, ultrasonic testing, and surface roughness measurement. These inspection techniques effectively identify and evaluate potential defects or surface irregularities, ensuring that the steel coils meet the necessary surface quality standards.

Q: Measures to prevent cold rolling of packaged cold rolled steel coils? Who can give some professional opinions oh?: In order to prevent rusting in the process of storage or transportation of steel roll, steel mills generally take the following packing: inner gas antirust paper wrapped with tape wrapped in plastic film sealing, intermediate, involute cardboard seal lining, cardboard corner, with iron and steel outer package corner protector, strapping fixed. If the inner package seal, so the steel coil is sank into the water, will not rust out.

Q: What are the challenges in the production of steel coils?: The production of steel coils faces several challenges. Firstly, one of the major challenges is ensuring consistent quality throughout the production process. Steel coils need to have uniform thickness, width, and flatness. Achieving this consistently can be challenging due to variations in raw materials, equipment, and operating conditions. Another challenge is managing the high temperatures involved in the production process. Steel coils are produced by heating steel slabs or billets to extremely high temperatures and then rolling them into coils. Maintaining the required temperatures and ensuring proper cooling can be a complex task, as any deviations can lead to inconsistencies in the final product. Furthermore, the production of steel coils requires a significant amount of energy. The steel industry is one of the largest energy consumers globally. Reducing energy consumption while maintaining production efficiency is a constant challenge. Implementing energy-efficient technologies and optimizing processes are necessary to address this challenge. Moreover, the production of steel coils generates a considerable amount of waste and emissions. Steel manufacturing involves various chemical reactions and releases pollutants such as carbon dioxide, sulfur dioxide, and particulate matter. Managing and minimizing these emissions to comply with environmental regulations is a significant challenge for the industry. Additionally, steel coils are often produced in large quantities, requiring efficient logistics and transportation systems. Ensuring timely delivery and minimizing damage during transportation can be a challenge due to the weight and size of the coils. Lastly, the steel industry faces market challenges, including fluctuating prices of raw materials, competition from other materials, and global economic conditions. Adapting to market demands and maintaining competitiveness is crucial for the sustainable production of steel coils. Overall, the challenges in the production of steel coils include maintaining consistent quality, managing high temperatures, reducing energy consumption and emissions, optimizing logistics and transportation, and adapting to market dynamics. Addressing these challenges requires continuous innovation, technological advancements, and a focus on sustainability.

Q: What are the pros with stainless steel? You don't have to oil them as much or you don't have to oil them at all?Is the rifling in the barrel typically stainless steel as well? if so, is this better accuracy or does the rifling last longer then conventional?are they worth the extra money?Thanks for any info you can provide!: stainless steel is a alloyed steel that resist rust and corrosion. show it enough salt (sea spray or sweat) and it will pit Stainless steel goes all the way through ...it's not a coating like nickle-plate. the inside of a stainless barrel is stainless and they hold up just as well as carbon steel barrels. Extra money? Stainless is pretty popular in new production and the price is not that much different than comparable guns in blue. Oil OK... they do hold up better to salt and sweat than bluing...and there is not coating or plating that can wear off. Down side... the reflect light. Some can be a bit to shiny for some situations.

Q: How are steel coils used in the production of steel bolts?: Steel coils are used in the production of steel bolts by being unwound and fed into a machine that cuts and shapes them into the desired bolt size and shape. The coils provide a continuous and uniform supply of steel, ensuring consistent quality and efficiency in bolt production.

Q: What are the challenges in coil blanking for high-strength steel?: Coil blanking for high-strength steel presents several hurdles due to the unique properties of this material. One of the main obstacles lies in the steel's high tensile strength, which makes cutting and blanking more difficult when compared to traditional steel grades. High-strength steel is typically harder and less malleable, resulting in heightened tool wear and greater cutting forces. Therefore, specialized cutting tools capable of enduring these extreme conditions are necessary. Additionally, the augmented cutting forces can cause increased vibrations, potentially impacting the accuracy and quality of the blanks. Another challenge arises from the spring-back effect displayed by high-strength steel after it is cut. This means that the material tends to return to its original shape, creating difficulties in achieving precise dimensions and tolerances in the blanks. Consequently, careful consideration and adjustment of the cutting parameters are required to minimize the spring-back effect. Furthermore, high-strength steel often contains a higher carbon content, leading to increased work hardening during the blanking process. As a result, the material becomes even harder and more brittle, making it more susceptible to cracks and fractures. To overcome this challenge, proper lubrication and cooling techniques are crucial in reducing heat buildup and minimizing the risk of cracking. Additionally, the heightened strength of the steel can also impact overall production efficiency. The increased cutting forces and tool wear may necessitate a reduction in cutting speeds, resulting in longer processing times. This can affect the productivity and throughput of the coil blanking process, requiring meticulous optimization and planning. In conclusion, the challenges involved in coil blanking for high-strength steel encompass increased cutting forces, tool wear, the spring-back effect, work hardening, and reduced production efficiency. Overcoming these challenges necessitates the use of specialized cutting tools, precise cutting parameters, proper lubrication and cooling techniques, and meticulous optimization of the production process.

Q: What is the minimum diameter of a steel coil?: The minimum diameter of a steel coil depends on various factors such as the thickness of the steel, the type of coil, and the intended use. However, it is generally recommended to have a minimum diameter of around 3 times the thickness of the steel for optimal performance and to prevent damage to the coil during handling and transportation.

Q: How are steel coils inspected for surface defects after processing?: Steel coils are inspected for surface defects after processing using various methods such as visual inspection, magnetic particle inspection, dye penetrant inspection, and ultrasonic testing. These techniques help identify any irregularities or defects on the surface of the coils, ensuring the quality and integrity of the final product.

Q: y does 1095 steel on a katana weight about a pound less for the same amount than 1045? the 1095 is better right? but then why is 1045 steel more comenly used for practical use than 1095, even though i no its cheaper to use 1045 for tami mats. so is 1095 steel the better investment for buying and minor tami mat use?: 1045 is a medium carbon steel is used when greater strength and hardness is desired than in the as rolled condition. Extreme size accuracy, straightness and concentricity combine to minimize wear in high speed applications. 1095 is a high carbon steel, but does not hold as sharp an edge. 1095 high carbon steel is harder and more durable than 440C stainless steel, but will rust much more easily. Stainless steel is more brittle than both 5160 and 1095 carbon steel, but is still very useful due to its resistance to rust and corrosion.

Q: What are the common applications of hot-rolled steel coils?: Hot-rolled steel coils are commonly used in various applications such as construction, automotive manufacturing, pipe and tube manufacturing, shipbuilding, and general engineering purposes. They are particularly suitable for projects that require strong and durable materials, as well as those that involve shaping and forming processes.

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