hot rolled steel strip

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Product Description:

Spring Steel:

Spring steel is divided into two types, one is alloy spring steel, and other one is carbon spring steel.

Alloy spring steel is a type that is used for manufacturing springs and other elastic parts. Spring steel should have high ratio of yield strength and tensile strength and elastic limit to make sure that the springs obtain enough power of elastic deformation and can bear much load.

Types of alloy spring steel: Si-Mn spring steel, Si-Cr spring steel, Cr-Mn Spring steel, Cr-V spring steel and so on.

Specification of Spring Strip Steel:

-Material: 30W4Cr2VA

-Standard: GB/T 1222-2007

-Type: Spring Steel

Chemical Composition:

C	Si	Mn	S
0.26~0.34	0.17~0.37	≤0.40	≤0.030
P	Cr	Ni	Cu
≤0.030	2.00~2.50	≤0.35	≤0.25
V	W
0.50~0.80	4.00~4.50

Mechanical Properties:

-Yield Strength σs (MPa): ≥1470 (150)

-Elongation δ10(%):≥7

-Hardness:

1, Hot rolled + Heat treatment, ≤321HB

2, Cold drawn + Heat treatment: ≤321HB

-Impact Power: ≥40

Norm of heat treatment:

1, Quenching: 1050℃~1100℃.

2, Cooled by oil.

3, Tempering: 600℃±50℃.

Usage/Applications of Spring Strip Steel:

-Due to the elements W, Cr and V, this type of spring steel obtain pretty high hardenability and nice mechanical properties under room temperature and high temperature. The tempering stability and hot workability are good.

-Being used under the state of quenching and high temperature tempering. It’s usually used as heat-resisting springs with working temperature below 500℃, like main secure valve spring of furnace and turbine steam seal leaf springs.

Packaging & Delivery of Spring Strip Steel:

-Packing Detail: The products will be well packed.

-Marks: there are two types of marks.

1, Tag marks. To show customers the specifications of products, company name and logo and other information required by customers.

2, Color marks. It’s easy for customers to distinguish them from other products at destination port.

-Delivery Detail: 30~45 working days after receive buyer’s T.T. or L/C.

Transportation:

1, The products can be delivered by bulk vessel or by container.

2, The maximum quantity of loading of container is 25 tons.

3, The products usually are transported to the nearest port from the production place.

Payment:

-Theoretical weight/Actual weight.

-FOB, CFR or CIF.

-Terms of payment: T.T. or L/C at sight.

Photos of Spring Strip Steel:

Spring Strip Steel

Q:How do steel strips compare to steel sheets?: Steel strips are narrower and thinner than steel sheets. They are typically used for applications that require flexibility, such as in the manufacturing of automotive components, appliances, and electrical equipment. Steel sheets, on the other hand, are larger and thicker, making them suitable for structural applications such as construction, shipbuilding, and manufacturing of heavy machinery. While both steel strips and steel sheets are made of the same material, their dimensions and intended uses differ significantly.

Q:How do steel strips contribute to the strength of structures?: Steel strips contribute to the strength of structures by providing structural support and reinforcement. They are often used in construction to increase the load-bearing capacity of beams, columns, and other structural elements. The high tensile strength and durability of steel make it an ideal material for withstanding heavy loads and resisting bending or warping. Additionally, steel strips can be strategically placed in specific areas of a structure to enhance its overall stability and prevent failure under stress or extreme conditions.

Q:Can steel strips be used in the production of watch cases?: Watch cases can indeed be made using steel strips. The durability, strength, and corrosion resistance of steel make it a popular choice for watch cases. Steel strips can be effortlessly molded and shaped to achieve various designs, enabling a wide array of styles and sizes. Moreover, steel watch cases have a timeless and elegant appearance that is greatly sought after by numerous watch enthusiasts. In conclusion, steel strips are a suitable and frequently employed material for crafting watch cases.

Q:How are steel strips transported from the manufacturing facility to the end-user?: Steel strips are typically transported from the manufacturing facility to the end-user through various modes of transportation such as trucks, trains, or ships, depending on the distance and logistics involved. They are packaged securely, often in bundles or coils, and loaded onto these transportation vehicles for safe delivery.

Q:Can steel strips be used for fencing?: Yes, steel strips can be used for fencing. Steel strips are commonly used as a durable and secure material for constructing fences. They offer strength, resistance to weathering, and provide a high level of security, making them suitable for various fencing applications.

Q:How are steel strips sawed or cut with a bandsaw?: Steel strips can be sawed or cut with a bandsaw using a few simple steps. First, the steel strip is securely clamped to a workbench or a suitable cutting surface. The bandsaw machine is then set up with the appropriate blade for cutting through steel. The blade tension and speed are adjusted according to the thickness and type of steel being cut. Next, the operator carefully guides the steel strip along the marked cutting line, ensuring a steady and controlled feed rate. The bandsaw blade, with its continuous loop of teeth, moves in a vertical or horizontal motion to cut through the steel strip. The teeth of the blade create a chip or kerf as they remove material, resulting in a clean and precise cut. It is important to maintain a steady feed rate and avoid forcing the steel strip through the blade, as this can cause the blade to bind or break. Additionally, using cutting fluid or lubricant can help to reduce friction and heat generated during the cutting process, prolonging the life of the blade and improving the overall cut quality. After the cut is complete, the steel strip is carefully removed from the bandsaw, taking care to avoid any sharp edges. Any remaining burrs or rough edges can be removed through grinding or deburring to achieve the desired finish. Overall, using a bandsaw to saw or cut steel strips provides a versatile and efficient method for achieving precise and clean cuts in various thicknesses and types of steel.

Q:How are steel strips protected against impact?: Steel strips are typically protected against impact through the application of various protective coatings or by packaging them with materials that provide cushioning and shock absorption.

Q:How are steel strips processed for surface welding?: Steel strips are processed for surface welding through a series of steps that involve cleaning the surface, preheating the strips, applying a flux or filler material, and finally welding the strips together using a suitable welding technique.

Q:What are the standard dimensions for steel strips?: The standard dimensions for steel strips can vary depending on the specific application and industry requirements. However, there are commonly used dimensions that are widely accepted in the manufacturing and construction sectors. Steel strips are typically available in various widths ranging from 1/2 inch to 12 inches, with the most common widths being 1 inch, 2 inches, and 4 inches. The thickness or gauge of steel strips can also vary, and it is usually denoted by a numerical value. Common thicknesses include 16 gauge (0.0598 inches), 18 gauge (0.0478 inches), and 20 gauge (0.0359 inches). Additionally, the length of steel strips can be customized to suit specific project requirements, with standard lengths typically ranging from 8 feet to 12 feet. It is important to note that these dimensions are not exhaustive and may vary based on regional standards and specific industry needs.

Q:What are the different types of corrosion that affect steel strips?: Steel strips can be affected by various forms of corrosion, each with its own characteristics and causes. These include: 1. General corrosion: The most common type, where the entire surface of the steel strip gradually corrodes due to exposure to oxygen and moisture. This results in the formation of rust (iron oxide). 2. Pitting corrosion: This localized corrosion creates small holes or pits on the surface of the steel strip. It occurs when the protective oxide layer is compromised, allowing corrosion in specific areas. Pitting corrosion is often caused by exposure to chlorides, like saltwater or de-icing salts. 3. Crevice corrosion: Tight spaces or gaps between overlapping steel strips can trap oxygen and moisture, leading to crevice corrosion. This form of corrosion is localized and can be accelerated by the presence of chlorides or other corrosive substances. 4. Galvanic corrosion: When dissimilar metals, such as steel and aluminum or copper, come into contact in the presence of an electrolyte like water or saltwater, galvanic corrosion occurs. The more reactive metal (anode) corrodes more rapidly, while the less reactive metal (cathode) remains protected. 5. Stress corrosion cracking: Under the combined action of tensile stress and a corrosive environment, stress corrosion cracking can occur. This leads to the formation of cracks in the steel strip, which can ultimately cause structural failure. Certain chemicals like chlorides or sulfides in the environment can trigger this type of corrosion. Considering the specific environment and conditions in which the steel strips are exposed is crucial, as different types of corrosion may be more prevalent or severe in certain situations. Employing appropriate corrosion prevention measures, such as protective coatings or regular maintenance, can effectively mitigate the detrimental effects of corrosion on steel strips.

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