エントリー - WLDステンレス

ステンレス鋼板の厚さの許容誤差

8月 6, 2021 カテゴリ: /作成者:

We usually call the thickness of 4-25.0 mm stainless steel plate in the middle plate, the thickness of 25.0-100.0mm stainless steel thick plate, thickness of more than 100.0mm is extra thick plate.When looking for a suitable stainless steel plate, there are several different grades available based on the strength of the metal and its chemical composition. There is a high grade that is made from Cr-Ni alloys which are generally used in commercial applications such as Pressure vessels, boiler shells, bridges, automobiles, shipbuilding, construction and other industrial purposes. It is important to note what type of use the stainless steel plate is going to have in any given industrial application. […]

Is 318LN a type duplex stainless steel grades?

8月 6, 2021 カテゴリ: /作成者:

318LN is Nitrogen-enhanced stainless steel commonly used to address corrosion failures in 300 series stainless steel. The structure of 318LN stainless steel is composed of Austenite surrounded by continuous Ferrite phases. 318LN contains about 40-50% Ferrite in the annealed state and can be considered duplex stainless steel. The duplex structure combines ferrite alloys (stress corrosion cracking resistance and high strength) with the superior qualities of Austenitic alloys (ease of manufacture and corrosion resistance). The 318LN is resistant to H2S uniform corrosion, sulfide stress cracking, hydrogen embrittability and pitting, and reducing media corrosion. It is commonly used to manufacture sulfur-resistant wellheads, valves, stems, and fasteners for use in mining environments where […]

High strength stainless steel used in aircraft applications

8月 4, 2021 カテゴリ: /作成者:

We usually call tensile strength higher than 800MPa, yield strength higher than 500MPa stainless steel is high strength stainless steel, yield strength higher than 1380MPa stainless steel is called ultra high strength stainless steel. The development of the aviation industry has proved that the improvement of aircraft and aero-engine performance largely depends on metal materials. Due to the high strength, high toughness, high stress corrosion cracking resistance and good impact resistance of steel, some key structural components of aircraft such as landing gear, girder, high stress joints, fasteners and other high strength stainless steel are still used. High strength stainless steel mainly includes Martensite precipitation hardening stainless steel and semi […]

Advantages Of Stainless Steel elbow fitting

8月 4, 2021 カテゴリ: /作成者:

Stainless steel pipe fittings, especially tee, elbow and the reducer is more and more common in pipeline engineering use because of their good shaping, corrosion resistance, high temperature and high-pressure resistance, welding, and other characteristics. Compared with the carbon steel pipe fittings, stainless steel pipe fittings has been often used in drinking water transportation, petrochemical and other pipelines with high requirements for the environment. To make things easy for those who don’t know much about them, this article is meant to enlighten you about this product line and its various features. What’s more, we would also discuss the benefits that you can expect from using them. By the time you’ve […]

地上配管の腐食防止

7月 30, 2021 カテゴリ: /作成者:

The corrosion of above-ground pipelines is caused by the combined action of corrosive ions (Cl-, S2-), CO2, bacteria and dissolved oxygen. Dissolved oxygen is a strong oxidant, it is easy to oxidize iron ions to form precipitation, and the relationship between dissolved oxygen and corrosion rate is linear. Sulfate-reducing bacteria will the existence of the sulfate-reducing hydrogen sulphide in the water, may lead to pipe hydrogen induced cracking and stress corrosion cracking, corrosion products generated ferrous sulfide and adhere on the surface of the steel is poor, easy to fall off, is potential, as the cathode constitute an active micro battery and steel matrix, and continue to produce corrosion to […]

なぜデュプレックスステンレス鋼が原子力発電所の冷却水システムに使用されているのですか？

2021年7月29日 カテゴリ: /作成者:

As a clean energy source, nuclear power is a major contributor to reducing carbon emissions worldwide. The cooling water piping system is the key to the safe operation of a nuclear power plant. It consists of thousands of feet of pipes of various diameters and sizes. It provides a reliable water supply for the cooling of plant equipment. The non-safety piping system must provide enough cooling water to cool the plant, while the safety system must provide enough cooling water to bring the reactor under control and safely shut it down in case of an emergency. These pipe materials must be resistant to cooling water corrosion throughout the service life […]