hot rolled steel strip

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Product Description:

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

Spring Strip Steel

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Q:What's the difference between hot rolled strip and cold rolled strip? What's the difference between hot rolled coil and cold rolled coil?
Hot rolled coil is above the recrystallization temperature of rolling, cold-rolled plate refers to the recrystallization temperature following rolling, popular point that is in the hot strip rolling red hot state, while cold rolled hot-rolled is under normal temperature rolling. Hot plate often said refers to the hot rolled plate, cold plate refers to the cold rolled plate, hot rolled, cold rolled and hot rolled coil is said and cold rolled coil.
Q:What's the difference between cold rolled strip and cold rolled strip?
The term "steel coil" is strip steel, whose width is less than 600mm. It is called "narrow band", so cold rolled coil is called cold-rolled strip
Q:What is the difference between cold plate and strip steel?
Strip steel is a kind of narrow and long steel plate produced by various rolling mills to meet the needs of industrial production of various metal or mechanical products in different industrial sectors. Strip steel, also known as steel strip, is within 1300mm in width, and the length varies slightly according to the size of each roll.
Q:What is the difference between steel strip and strip steel?
In some less strict people, it is easy to confuse these two names, but also on the Internet with the same strip of steel.
Q:What's the meaning of "double light" in strip cold rolling?
Strip strip coiling: general supply, with high dimensional accuracy, good surface quality, easy processing, material saving and other advantages. With the same steel plate, strip by strip material is divided into ordinary and high quality strip two; according to the processing method of cold rolled strip steel hot strip, two.
Q:What's the cutting edge of cold rolling strip?
Cold rolled materials are generally cut edges. The hot rolled material is partly rough. Cutting edges and burrs can be viewed straight. The two sides of a strip of steel, similar to those of waves. The two sides of the trimming are straight.
Q:What are the high speed steel strips and material specifications?
High precision (H) and wide and high thickness accuracy (KH) four kinds of strip steel. According to the material condition, two kinds of strip can be divided into chilled and annealed, the former has higher strength and the latter has good plasticity and toughness.
Q:The relation between hot rolled strip and cold rolled coil, hot rolled strip and cold rolled strip
Cold rolled coil (annealed): hot rolled coil obtained by pickling, cold rolling, batch annealing, flattening, and finishingThat is, the biggest difference between hot rolled coil and cold rolled coil is that the heat treatment process is different. (annealing process)Compared to the specific heat roll, the cold-rolled roll has a bright surface and a high degree of finish, but it produces more internal stress and is often annealed after cold rolling.
Q:Where is the lining board made of polyurethane lining? Please contact immediately
I don't know where to use it,Wear resistant lining board is based on the use of the environment and requirements for the product design, the earliest silo chute used in wear-resisting lining board is made of PE material fabrication and installation, but in use, PE liner wear, service life, leading to the use of units often change, very inconvenient, but also affect the normal purchase and shipment. PE material hardness is very high, food and other food raw materials in the process of loading and unloading, and PU lining plate contact parts, food will be a large number of broken, seriously affecting the quality of grain. Therefore, polyurethane wear-resistant lining board arises at the historic moment. Polyurethane wear-resistant lining board, as an elastomer product, has very high abrasion resistance and resilient cushioning performance.
Q:What is the difference between steel strip and coil?
What do you think of rolling mills, not money ah, rolling strip is a small rolling opportunities, can be cheaper than rolling coil, and this cost should be spread to each product above, there are other what, like the cost of sharing ah.

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