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Stainless steel round steel
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Stainless steel round steel
日期:2020-10-03 人气:70

Stainless steel round steel belongs to a class of long material, but also belongs to a class of bar, the so-called stainless steel round steel refers to the cross section of uniform round long material, generally about four meters long.

It can be divided into light circles and black rods.

The so-called light circle, refers to the surface is smooth, after quasi-rolling treatment;

And the so-called black rod, refers to the surface of black coarse, direct hot rolled.


Introduction to the

Stainless steel round steel refers to a round section of solid strip steel.

Its specifications to the diameter of the number of millimeters, such as "50" said that the diameter of 50 millimeters of stainless steel round steel.

Common materials are 301, 304, 303, 316, 316L, 304L, 321, 2520, 201, 202, etc.

Specifications are expressed in diameter, such as "50" refers to the diameter of 50 mm round steel.

Round steel is divided into three types: hot rolled, forged and cold drawn.

Hot rolled round steel is 5.5-250 mm in size.

Stainless steel round steel has broad application prospects, and is widely used in hardware kitchenware, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace, building decoration, etc.

Seawater equipment, chemical, dyestuff, paper making, oxalic acid, fertilizer and other production equipment;

Photographs, food industry, coastal facilities, ropes, CD rods, bolts, nuts.


Types of features

Stainless steel round steel according to the production process can be divided into hot rolling, forging and cold drawing three kinds.

Hot rolled stainless steel round steel sizes are 5.5-250 mm.

Among them: 5.5-25 mm small stainless steel round steel is mostly supplied in straight bundles, commonly used for reinforcing bars, bolts and various mechanical parts;

Round steel of stainless steel greater than 25 mm, used chiefly in the manufacture of machine parts or for seamless steel tube billets.

According to the material points

1.310S stainless steel round steel

Features: 310S stainless steel is austenitic chromium-nickel stainless steel with good oxidation resistance and corrosion resistance, due to the higher percentage of chromium and nickel, 310S has much better creep strength, can continue to work at high temperatures, has good high temperature resistance.

2.316L stainless steel round steel

Features:

1) Cold rolled products have good gloss and beautiful appearance;

2) Due to the addition of Mo, the corrosion resistance, especially the excellent pitting resistance;

3) Excellent high temperature strength;

4) Excellent work hardening (weak magnetic properties after processing)

5) The solid solution state is non-magnetic;

3.316 stainless steel round steel

Characteristics: 316 stainless steel is the second most widely used steel after 304, mainly used in the food industry and surgical equipment, because of the addition of MO, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength is particularly good, can be used under harsh conditions;

Excellent work hardening (non magnetic).

Stainless steel round steel

Characteristics: 304 steel is added with Ti element to prevent grain boundary corrosion, suitable for use at 430℃-900℃ temperature.

In addition to the addition of titanium, which reduces the risk of weld corrosion, other properties are similar to 304

5.304L stainless steel round steel

Properties: 304L stainless steel round steel is a variant of 304 stainless steel with lower carbon content and is used for welding applications.

The lower carbon content minimizes the precipitation of carbides in the heat affected zone near the weld, which may lead to intergranular corrosion (welding erosion) of stainless steel in some environments.

6.304 stainless steel round steel

Characteristics: 304 stainless steel is one of the most widely used chromium - nickel stainless steel, with good corrosion resistance, heat resistance, low temperature strength and mechanical properties.

Corrosion resistance in the atmosphere, if it is an industrial atmosphere or heavily polluted areas, it is necessary to clean in time to avoid corrosion

corrosion

Dust particles attached to the surface can promote corrosion of stainless steel.

When there are dust particles on the surface, a gap is formed at the deposition of dust particles, which is easy to maintain the water film containing chloride ions, which impedes oxygen replenishment and leads to the destruction of the passivation film.

In addition, the solution zone and the passivation zone adjacent to the dust deposition will form an occluded battery and accelerate the formation and development of pitting pits.

Oxidation treatment

(1) Sand blasting (shot) method: mainly using the method of spraying micro-glass beads, remove the black oxide skin on the surface.

(2) Chemical method: the use of a pollution-free pickling passivation paste and normal temperature non-toxic with inorganic additives of the cleaning solution for dipping.

So as to achieve the stainless steel white color processing purpose.

After treatment, it basically looks like a dull color.

This method is more suitable for large, complex products.


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